🚙 Building a fast car? Get $400 OFF the all-inclusive VIP online course package deal: hpcdmy.co/offery197 🦵Kickstart your EFI Tuning knowledge. Get 50% OFF your first online course: hpcdmy.co/offery197 There is a LOT going on in this interview! Great to catch up with Rob again and you can just feel the passion dripping off this guy for what he is up to here, it's awesome. Hope you guys enjoy it 😎 - Taz. ------------------------------------ TIME STAMPS: 0:00 - FD RX7 AWD Tube Frame 4 Rotor 0:24 - Even More Hands On Since Last Chat 1:38 - Style Props 1:48 - Put Your Mind To It, Dive In 2:01 - Theory Vs Reality: Intercooler Example 3:15 - Injector Data & Placement (For 16 Injectors) 3:58 - 4 Rotor Engine Development 5:05 - Machining Demands 6:29 - Billet Rotary Irons 7:42 - Clarification on Coatings & Metal Combinations 8:16 - X-Raying For Metal Composition & Data 8:59 - Cooling - Cast Vs Aluminium Testing 10:20 - No OEM 4 Rotor Parts 10:37 - Eccentric Shaft Support & Improvements 12:20 - 8,000rpm and 1240hp, Things Bend/Flex 12:46 - Rotary Reliability Testing: Ridigity 13:38 - 39psi Vs Ken Block Dowel Example 14:40 - Torsional Forces At Launch 15:04 - Porting: 4 Rotor Setup 16:06 - Peripheral & Semi-Peripheral Port Explanation 16:50 - Apex Seals Vs Porting 17:42 - Apex Seal Purpose & Options 18:38 - Apex Seal Scanning & Heat Treating 19:40 - Best Apex Seal.....For What? 20:40 - Stock Seals & More Torque Than An LS V8 21:38 - Electronics: Haltech R5 Nexus 23:12 - R32 GTR ATTESA Based Traction Control System 24:00 - Torque Split Explanation 24:20 - Launching Strategy 25:41 - Haltech R5 Thoughts and Logging 27:26 - PDM - Power Distribution Module 28:16 - Ignition System 28:53 - Spreading Electrical Load 29:34 - Rotary Problems Come From Auxiliary Problems 30:10 - Rotary Engine Reputation 30:59 - Thanks Rob 31:32 - Do What Rob Did And Work On Your Own Project, Big Or Small, It Doesn't Matter
Taz with the timestamps being the MVP of HPA, as always. 😎👍 Prayers for our brothers and sisters up around the Coromandel. Cyclone Gabrielle was already huge when she passed by my neck of the woods 2 weeks ago so I knew how bad it was gonna get down there. 🙏
Rob's openness about the rotary engine and it's intricacies is exactly what the community needed to help it grow. A lot of the information he provides is hush hush and he's changed that for the better. It seems HP Academy helping him grow has had an even deeper impact then you might have thought. Cheers.
There is a lot behind this but humans as a whole have repeatedly withheld knowledge from others to benefit themselves for a millennia. I believe in sharing all the knowledge I know in hopes others around me will share theirs.😜
That's awesome! Rob has promoted us a lot (which we really appreciate!). We were stoked to see him in the tee although it threw Andre for a second as usually he's talking to Ben or one of us staff here when that logo is on someone's chest haha I hope you used Rob's affiliate link as well! Anyone reading this, if he or anyone else with an HPA link sends you our way make sure you use it as it helps them out too 😎 - Taz.
He's one of the inspirations for me working on my own car. He started with zero to little knowledge on cars and hit the books. Now, look at him! I think my favorite thing about him is he's not afraid to fail and share why. I've seen his engines go through havoc on his vlogs and stuff and man. His heartache normalizes my heartache so i don't get so down on myself.
I've followed Rob's incredible journey almost since the start of his channel. I love how he is transparent with his followers and we see his mistakes - and I also learned how to tune my engines because of HPA. Rob did a 1500bhp 4 Rotor, tubular frame RX7. I did a 1994 Celica GT-Four with a new turbo! Differences and goals. GREAT, GREAT INTERVIEW
Andy is one of the smartest guys in the industry, and also a really nice guy. Hope you're enjoying your R5, we haven't had a chance to fit ours yet. There's an R3 on the way now too, Andy and the Haltech team are busy 😎 - Taz.
Incredible interview. I could honestly listen to him all day. The passion, the knowledge and transparency are what the rotary community needed. What an ambassador he is.
I love Rob but he throws so much information at you so quickly in his videos that at times its easy to miss things. This interview was extremely well done and helped keep the topics a little more focused. In doing so you guys helped me learn more about the 4 rotor despite the fact that I've seen every one of his videos! Great work and thank you very much!
Love this video! Been following Rob and HPA for a long time and I love seeing two people who support each other so much finally come together. Like 2 peas in a pod!
Reckon he's got 8 on so he's prepared to un-layer for any occasion? Christmas jumper from nan, one from Andre, a few Valvoline ones then something flashly for dinner parties all ready to go at the drop of an awkward arm jiggle and belly flash? Wish I was that prepared, I swear remembering undies is hard enough some days 😎 - Taz.
What an awesome guy. I love to see the thought and love he’s put into that car. He’s a sponge for taking in information then deciphering it and making it work for him.
Rob is one of the main guys that motivated me into doing my own tuning and doing the HP Academy courses. Purchased a couple of courses not too long ago and that gave me the confidence to rescale my MAF on my own. Been using EcuTek and I'm super happy I've started learning to do my own EFI tuning. Next steps are fuel and timing tables.
It's been quite a journey watching him hoon, break, re-engineer and hoon again. So much drama with this project its nearly a soap opera. We've laughed, we've cried And he's here to tell the tale Topps up HP
Cheers Noah, appreciate the support from you guys, and also from guests like Rob. The time people take out from busy events like SEMA to talk to us is amazing. We have about 40 interviews to come yet (another one with Rob too that is even longer!), we've just been a bit short-staffed to get them out sooner for you, but better late than never 😎 - Taz
As a Electronic engineer nerd, listening to one nerd interviewing another nerd.... The part that finally made me gasp was...... 80A on the IGN circuit...................... Brought tears to my eyes....
Great video as always guys been waiting for this a while, and thank you HP academy for the free stuff you put out really helps getting a deeper understanding in tuning!
Best Rob interview yet. Thank you for this. Been very interested in the progression of is 4 rotor and a huge fan so you hit a lot of questions that helped in the understanding of it. Are you as impressed with it as I am?
Fantastic interview, thanks. Big fan of Dahm's content but he has been doing it so long you don't really get that high-level overview anymore unless you go back and re-watch old content. Great guided discussion.
Excellent interview. I've seen everything on this car so I expected to not finish this 30 minute interview, but I was wrong. Watched the whole thing. Might watch it again. Lol
I know Rob but i really like how the interviewer is able to break down topics to be easily consumable. Makes me believe that the HPA is really effective
Anyone else LOL at the guy at approx. 27:45? He starts picking his nose. Realizes they're filming and slowly backs out of frame. Effing legend! Exit stage left. Poor bastard has been immortalized. May the clipping begin.
That car is insane. Always loved rotary engines since my 85 Gsl I bought when I was a freshman in high school. I'd like to build a naturally aspirated 4 rotor in a tube chassis with a 3rd gen body some day.
@@fullsendmarinedarwin7244 I think the only thing I'd have to really look into would be the adapter plate to the trans, clutch spacing and all that. Rverything else would be regular swap stuff. Plenty of room in the engine bay for activities lol
Who knew that Rob was an excellent interview! I always feel his channel was tough to watch because of his stream of consciousness style. It's totally different with a moderator
What's the bet? A bag of pineapple lumps? 😂 It's off to a great start and there are a ton of really engaging topics so I wouldn't bet against you myself 😎 View numbers aren't super important vs the type of person that is watching, but it's always nice to know a lot of interesting content has reached a lot of people who can learn from it, use it, or just enjoy it. Win, win, win - Taz.
This thing has to prove itself. Once I see gridlife lap times, fl2k 1/4 mile times, 1/2 mile top speeds then I'll buy the hype. On paper it looks sick, but It's about time we see the reality.
There are some links to free lessons in the description and a ton of content on UA-cam for you guys and the site is www.hpacademy.com Next course due out is one on CAD design, hopefully live today 😎 - Taz.
LOVE THIS CHANNEL AND ROBS BUILD..I SUB'D TO HIM BEFORE HE BUILT THE 4 ROTOR SO IM NOT BEING A HATER BUT YOU ASK ROB ABOUT THE RELIABILITY OF THIS 4 ROTOR AND IM CURIOUS HOW MANY MILES THE CAR EVEN HAS ON IT? ID DOUBT IF IT HAS 1000 MILES OF ROAD USE BUT HOURS OF OPERATION IM CURIOUS ABOUT..ROB IF YOUR OUT THERE ?? THAT BALL BEARING E SHAFT IS A SUPER IMPRESSIVE PIECE !!! LOVE HOW ROBS TIRELESSLY ATTEMPTING TO FIND WAYS TO MAKE IT RELIABLE.
I don't think Rob would say it is much either, he was just stating it'd been more than he was promised to expect. He probably won't see all the comments on here but he might see the same question regarding miles on his own channel or an IG post, he seems pretty active on there - Taz.
Love the insight and the excitement given off when speaking about his car. Shows the difference between, when you build it yourself and when you have someone do it for you.
Love the high level deep dive into research and development. Edit: Great interview with both men being able to riff accurately and effortlessly. Easy watch 🙏🏼
![4 Rotor AWD FD RX7 | Rob Dahms 1000HP+ Quad Rotor Build [TECH TALK]](/img/n.gif)
🚙 Building a fast car? Get $400 OFF the all-inclusive VIP online course package deal: hpcdmy.co/offery197
🦵Kickstart your EFI Tuning knowledge. Get 50% OFF your first online course: hpcdmy.co/offery197
There is a LOT going on in this interview! Great to catch up with Rob again and you can just feel the passion dripping off this guy for what he is up to here, it's awesome. Hope you guys enjoy it 😎 - Taz.
------------------------------------
TIME STAMPS:
0:00 - FD RX7 AWD Tube Frame 4 Rotor
0:24 - Even More Hands On Since Last Chat
1:38 - Style Props
1:48 - Put Your Mind To It, Dive In
2:01 - Theory Vs Reality: Intercooler Example
3:15 - Injector Data & Placement (For 16 Injectors)
3:58 - 4 Rotor Engine Development
5:05 - Machining Demands
6:29 - Billet Rotary Irons
7:42 - Clarification on Coatings & Metal Combinations
8:16 - X-Raying For Metal Composition & Data
8:59 - Cooling - Cast Vs Aluminium Testing
10:20 - No OEM 4 Rotor Parts
10:37 - Eccentric Shaft Support & Improvements
12:20 - 8,000rpm and 1240hp, Things Bend/Flex
12:46 - Rotary Reliability Testing: Ridigity
13:38 - 39psi Vs Ken Block Dowel Example
14:40 - Torsional Forces At Launch
15:04 - Porting: 4 Rotor Setup
16:06 - Peripheral & Semi-Peripheral Port Explanation
16:50 - Apex Seals Vs Porting
17:42 - Apex Seal Purpose & Options
18:38 - Apex Seal Scanning & Heat Treating
19:40 - Best Apex Seal.....For What?
20:40 - Stock Seals & More Torque Than An LS V8
21:38 - Electronics: Haltech R5 Nexus
23:12 - R32 GTR ATTESA Based Traction Control System
24:00 - Torque Split Explanation
24:20 - Launching Strategy
25:41 - Haltech R5 Thoughts and Logging
27:26 - PDM - Power Distribution Module
28:16 - Ignition System
28:53 - Spreading Electrical Load
29:34 - Rotary Problems Come From Auxiliary Problems
30:10 - Rotary Engine Reputation
30:59 - Thanks Rob
31:32 - Do What Rob Did And Work On Your Own Project, Big Or Small, It Doesn't Matter
Taz with the timestamps being the MVP of HPA, as always. 😎👍 Prayers for our brothers and sisters up around the Coromandel. Cyclone Gabrielle was already huge when she passed by my neck of the woods 2 weeks ago so I knew how bad it was gonna get down there. 🙏
Rob's openness about the rotary engine and it's intricacies is exactly what the community needed to help it grow. A lot of the information he provides is hush hush and he's changed that for the better. It seems HP Academy helping him grow has had an even deeper impact then you might have thought. Cheers.
There is a lot behind this but humans as a whole have repeatedly withheld knowledge from others to benefit themselves for a millennia. I believe in sharing all the knowledge I know in hopes others around me will share theirs.😜
Rob is a mad scientist
That car is literally junk I just watched it race on hoonigan
@@ryanshiver9044 do better then.
@@gregroles69 I just watched it fail in a 2nd hoonigan race 2 days ago, it's shit like all rotary
I've been waiting for this episode. Rob is the one who turned me to HP academy, and the reason why I became a VIP
That's awesome! Rob has promoted us a lot (which we really appreciate!). We were stoked to see him in the tee although it threw Andre for a second as usually he's talking to Ben or one of us staff here when that logo is on someone's chest haha
I hope you used Rob's affiliate link as well! Anyone reading this, if he or anyone else with an HPA link sends you our way make sure you use it as it helps them out too 😎 - Taz.
Reason why i bought one of their online courses too!
He's one of the inspirations for me working on my own car. He started with zero to little knowledge on cars and hit the books. Now, look at him! I think my favorite thing about him is he's not afraid to fail and share why. I've seen his engines go through havoc on his vlogs and stuff and man. His heartache normalizes my heartache so i don't get so down on myself.
It's insane how 6 years of development by 3 dudes in a shed can do, they literally had (basically) 0 knowledge
@@RENO_K mfw they all put in enough time to get a degree in auto tech
I've followed Rob's incredible journey almost since the start of his channel. I love how he is transparent with his followers and we see his mistakes - and I also learned how to tune my engines because of HPA.
Rob did a 1500bhp 4 Rotor, tubular frame RX7. I did a 1994 Celica GT-Four with a new turbo! Differences and goals.
GREAT, GREAT INTERVIEW
28:25 the reaction when he casually drops 80A of load running just spark lol
Once Rob starts rattling about details he just KEEPS going and going. Passion in it's purest form.
Rob is our stateside RE Amemiya ! always innovating and never afraid to try new things.
Andre, you finally interviewed a guy you can talk more than you. Love you guys!
The interview Yall did with Andy and his enthusiasm helped convince me to order an R5.
Andy is one of the smartest guys in the industry, and also a really nice guy. Hope you're enjoying your R5, we haven't had a chance to fit ours yet. There's an R3 on the way now too, Andy and the Haltech team are busy 😎 - Taz.
Incredible interview. I could honestly listen to him all day. The passion, the knowledge and transparency are what the rotary community needed. What an ambassador he is.
I love Rob but he throws so much information at you so quickly in his videos that at times its easy to miss things. This interview was extremely well done and helped keep the topics a little more focused. In doing so you guys helped me learn more about the 4 rotor despite the fact that I've seen every one of his videos!
Great work and thank you very much!
_Rob has phenomenal knowledge, and a fantastic ability to clearly convey it all. Thank you for this interview._
Love this video! Been following Rob and HPA for a long time and I love seeing two people who support each other so much finally come together. Like 2 peas in a pod!
This Channel just keeps reminding me why I love cars.
rotor daddy is here!
gonna be a great year for Rob with this car !
These two guys have been so helpful in supporting the rotary enthusiast community!
I wonder if Rob switched t-shirts when he knew Andre was coming with the camera, or if he had that shirt on all day. I could see it going either way.
Reckon he's got 8 on so he's prepared to un-layer for any occasion? Christmas jumper from nan, one from Andre, a few Valvoline ones then something flashly for dinner parties all ready to go at the drop of an awkward arm jiggle and belly flash?
Wish I was that prepared, I swear remembering undies is hard enough some days 😎 - Taz.
He wears that shirt fairly regularly lol.
What an awesome guy. I love to see the thought and love he’s put into that car. He’s a sponge for taking in information then deciphering it and making it work for him.
Rob is one of the main guys that motivated me into doing my own tuning and doing the HP Academy courses. Purchased a couple of courses not too long ago and that gave me the confidence to rescale my MAF on my own. Been using EcuTek and I'm super happy I've started learning to do my own EFI tuning. Next steps are fuel and timing tables.
Good luck dude!
My favourite performance interviewer interviewing one of my favourite builders, love it
Cheers for the support! - Taz.
This was such a chill and engaging interview. Rob really bringing his enthusiasm to it.
Loved it!
It's been quite a journey watching him hoon, break, re-engineer and hoon again. So much drama with this project its nearly a soap opera. We've laughed, we've cried
And he's here to tell the tale
Topps up HP
Fantastic video guys! Thank you for continually putting out such quality content!!
Cheers Noah, appreciate the support from you guys, and also from guests like Rob. The time people take out from busy events like SEMA to talk to us is amazing. We have about 40 interviews to come yet (another one with Rob too that is even longer!), we've just been a bit short-staffed to get them out sooner for you, but better late than never 😎 - Taz
@@hpa101Alright I’m super glad to hear that!! Looking forward to every minute of it mate 😎
As a Electronic engineer nerd, listening to one nerd interviewing another nerd.... The part that finally made me gasp was......
80A on the IGN circuit...................... Brought tears to my eyes....
Gotta love Rob, he really displays what a bit of curiosity could do.. man had no idea what he was doing at ALL when he started. Big props.
Just discovered this channel. WHERE HAVE YOU GUYS BEEN FOR THE LAST 4 YEARS OF MY ENTHUSIASM. Will be purchasing your courses for sure!!
That moment when the interviewer is a fan of the interviewee is a fan of the interviewer
Awesome!!!
An EXCELLENT interview! Thank you, thank you, thank you!
Great video as always guys been waiting for this a while, and thank you HP academy for the free stuff you put out really helps getting a deeper understanding in tuning!
Best Rob interview yet. Thank you for this. Been very interested in the progression of is 4 rotor and a huge fan so you hit a lot of questions that helped in the understanding of it. Are you as impressed with it as I am?
That KEEPS is really working on Rob’s hair LOL
Love watching Robs content and with his rotor connection to NZ and our long love with the motor...
Wow! That was such a thorough, deep-dive into the kind of consideration that goes into running a four-rotor.
Excellent work from both Rob and Andre :)
13:38 Rip Ken Block
A massive loss 😢 - Taz.
Crazy been watching both channels, so cool to see this video. Love the videos!!
Fantastic interview, thanks. Big fan of Dahm's content but he has been doing it so long you don't really get that high-level overview anymore unless you go back and re-watch old content. Great guided discussion.
Quality content fellas , love a good in depth yarn like this about the triangle.
Sweet video. Loved the details. I don’t even own a rotary. But I needed this information
Excellent interview. I've seen everything on this car so I expected to not finish this 30 minute interview, but I was wrong. Watched the whole thing. Might watch it again. Lol
Wow great interview, lots of information to take in here. Great work guys.
Pretty awesome to see Rob being able to nerd out about his build. Very entertaining and informative. 👍 loved the video
I know Rob but i really like how the interviewer is able to break down topics to be easily consumable. Makes me believe that the HPA is really effective
Two great minds, that's what happens when two technical gurus collaborate
brilliant people to deal with very high intelligence level. great work
Rob is such a legend, and one of the coolest cars in the world. Great interview!
Great dude and great car....thanks HPAcademy 👍🏽
Andrew Simon walking Legend. Still remember travelling from Kaikohe to the drags when you unveiled Docile was a good weekend in the 2000s.
We need a rotary engine building course from HPA!
Yes!!
Just review all of Robs work, very detailed and comprehensive
What a great interview
I've been watching R^HB build this for the last 3 years
Rob is a legend! And what a great interview. Very enjoyable and thanks for all the info.
Anyone else LOL at the guy at approx. 27:45? He starts picking his nose. Realizes they're filming and slowly backs out of frame. Effing legend! Exit stage left. Poor bastard has been immortalized. May the clipping begin.
Great interview.
Cheers Dan, glad you enjoyed it - Taz,
Great info.
🏁😎👍👍
Glad you enjoyed it!
Protect Rob at all costs
rob is the king 🔥🔥🔥
That car is insane.
Always loved rotary engines since my 85 Gsl I bought when I was a freshman in high school.
I'd like to build a naturally aspirated 4 rotor in a tube chassis with a 3rd gen body some day.
I would happily watch an endless feed of these two talking cars.
Good stuff
Rob is such a nerd, and I LOVE IT !
lmao @ 19:53 "its maam!"
Great episode 🤘
I want to do a turbo 2 rotor AWD swap in my 95' Honda Civic, I think that would be pretty snazzy.
Edit: Because of Rob lol
AWD with CRV running gear would be cool 😎
@@fullsendmarinedarwin7244 I think the only thing I'd have to really look into would be the adapter plate to the trans, clutch spacing and all that. Rverything else would be regular swap stuff. Plenty of room in the engine bay for activities lol
@ 23:30 some guy takes a pic of the VIN on Robs car. Anyone have a clue as to why? Just seems a bit odd unless you are a cop or repo man.
Come a long way…props
Honestly the sickest 4 rotor Fd rx-7 build I’ve ever seen, another good example is Mazzei’s formula 7 4 rotor turbo rx-7
So much knowledge
I could hear those two all day
23:30 VIN photo?
The man who ripped the veil of the rotary world, I’ve always hated on people who has the knowledge and don’t share their impressions on a topic
Everybody forgets 1978 the s1 rx7 came out it had a factory 300k warrenty..as long as warm up and cool down was observed and servicing they did it
I've always wanted to do a rotary Mr2 buid
Who knew that Rob was an excellent interview! I always feel his channel was tough to watch because of his stream of consciousness style. It's totally different with a moderator
I predict this will be your most viewed video to date.
What's the bet? A bag of pineapple lumps? 😂
It's off to a great start and there are a ton of really engaging topics so I wouldn't bet against you myself 😎 View numbers aren't super important vs the type of person that is watching, but it's always nice to know a lot of interesting content has reached a lot of people who can learn from it, use it, or just enjoy it. Win, win, win - Taz.
Epic!
This thing has to prove itself. Once I see gridlife lap times, fl2k 1/4 mile times, 1/2 mile top speeds then I'll buy the hype.
On paper it looks sick, but It's about time we see the reality.
Rob! If it's finished, GET SOME SLEEP!
Weird!? Andre you just got the best plug that ever could be. Look what you guys have helped create
Is it just me or did the guy at 23:25 take a picture of the vin?
Why is everyone obsessed with Rob's rx-7? It is amazing, no doubt. But Mazzei's Formula 7 Rx-7 was hands down the best ever made...
What's the link to To your website to pick up some classes. 😍🤩
There are some links to free lessons in the description and a ton of content on UA-cam for you guys and the site is www.hpacademy.com
Next course due out is one on CAD design, hopefully live today 😎 - Taz.
You guys really are the best at what you do though. No one goes in depth an explains things in a way for anyone to understand the way you guys do.
LOVE THIS CHANNEL AND ROBS BUILD..I SUB'D TO HIM BEFORE HE BUILT THE 4 ROTOR SO IM NOT BEING A HATER BUT YOU ASK ROB ABOUT THE RELIABILITY OF THIS 4 ROTOR AND IM CURIOUS HOW MANY MILES THE CAR EVEN HAS ON IT? ID DOUBT IF IT HAS 1000 MILES OF ROAD USE BUT HOURS OF OPERATION IM CURIOUS ABOUT..ROB IF YOUR OUT THERE ?? THAT BALL BEARING E SHAFT IS A SUPER IMPRESSIVE PIECE !!! LOVE HOW ROBS TIRELESSLY ATTEMPTING TO FIND WAYS TO MAKE IT RELIABLE.
I don't think Rob would say it is much either, he was just stating it'd been more than he was promised to expect. He probably won't see all the comments on here but he might see the same question regarding miles on his own channel or an IG post, he seems pretty active on there - Taz.
These two guys could be brothers almost
Wow the cars finished lolololol well done rob,
Love the insight and the excitement given off when speaking about his car. Shows the difference between, when you build it yourself and when you have someone do it for you.
Love these explanations, very fascinating. RIP Ken Block.
Looks like someone took to that bonnet with sandpaper 😮
23:25 guy takes picture of VIN
0:00 “Uff yerra rohyteray finehtik”
Ahhh, I was wondering what he said. Thanks for that - Taz.
@@hpa101 😂 I love the accent lol
Has Rob ever stated who he bought his wrap material from?
17:38 everyone faces seeing the absolute mastodon of a turbo in this car for the first time
Here for daddy Dahm
It's definitely the most impressive AWD 4 rotor ever. Is there even another?
Agreed, but I don't know every car hidden away out there so played it safe 😂 - Taz
Amazing interview! So much knowledge! Is this how science groupies feel listening to astrophysicists! 🤣
Love the high level deep dive into research and development. Edit: Great interview with both men being able to riff accurately and effortlessly. Easy watch 🙏🏼
I'm seriously puzzled why nobody has ever adapted the 13b to direct injection before.
Second most impressive 4 rotor. Number one goes to mazzei formula’s old 4 rotor build. He sold it to someone who builds monster quarter mile gtr’s.