Dyno Proven D16z6 / D15b P08 SOHC VTEC Head Porting Development
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- Опубліковано 8 лют 2023
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Here we port a P08 D16z6 Head and we share dyno sheets of a stock head
vs our ported head and then some... We discuss the certain approach we do
and as well as the certain grits we use for shaping and then the final finishing touches
oh and btw all 3 runs, there was no cam change done, I realize there are some there that do some tests but secretly change cams to show better numbers
look at the dyno sheets all 3 u can tell the same cam was maintained as the shape of the graph is consistent
We also talk about our use of Dykem and Marker ink on helping view the pattern and also for port matching needs and many more
a video that would help compliment is this port matching video here
Liking and sharing this video helps get it to a wider audience as it favors those who are wishing to understand and learn about these things
we covered a Pr3 b16 head, a crv p75 head and even a d16y8 sohc vtec head so this P08 is right in time
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2024 updated version of a z6 ported head is here! Check it out
ua-cam.com/video/zZTJxNE2QuA/v-deo.htmlsi=EHzj6sfhYJ4-VGOY
A 97whp increase from just a ported head is absolutely insane 😳, goes to show how efficient that port was, motor breathe much better, great job on that!
I agree! The reason for the result as observed, is mainly it got to a point that the stock head has become the limiting factor hence once the Ported head was installed it let it breath as it wanted and needed to
@@SRDmotorsports makes perfect sense
prolly scary to drive too! Lol
@@SRDmotorsports I could imagine because that's a lot of power lol
@@StraightOutThaGudda4U then a small hatch scary
Heads can make a world of difference, I have a Jeep 258, Dyno'ed old stock head (low intake and 90° turn into valve) and then switched to a newer 4.0 7120 Head (Intake is raised up and allows more flow). No other changes, didn't port or match or ANYTHING, just slapped on a newer design with better flow but still factory crap, lol.
Dyno'ed yesterday with new 4.0 head.
Previous 258 Head: 103.7 HP 188.6 TQ
Current 258 with 7120 4.0 Head: 127.3 HP 211.2 TQ
Overall gain: + 23.6 HP + 22.7 TQ
That's huge with no tooling work done, plus my RPM limit raised about another 750!!
Next is the Aluminum Edelbrock head, this is when things will get FUN. But I post to say, yeah, they are often overlooked by many.
Oh maaaan! That’s a decent chunk of gains 23.6hp and 22.7 tq on just change of heads alone…
I can see that NOW the fun begins! With the earlier talk we had on the other video about torque n response…now add the “playing” with the 7120 4.0 head maaaaan 😎
New project here! D16zc skunk2 cam build with P29 pistons
ua-cam.com/video/6cPHWKFCPkI/v-deo.html
And Hopefully this is being watched with sensibility and common sense :) a lot can be picked up in this one that can be advantageous to your own project
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ua-cam.com/channels/hrn75HL4m9C0OMiLzBQl1g.htmljoin
Thanks my dream is build a d16z6 all motor in a future
That’s a good project!
D16y8 porting video version is here
ua-cam.com/video/ECaeIUrTVvw/v-deo.html
Great info! 👍🏽 👏🏽🙌🏾
Glad it’s giving good ideas for future projects! I hope hehe
oh nice! thanks SRDMotorsports 🙂 another project
Oh thanks for checking this out boss!
A more aggresive camshaft, racing springs, and a head port are all you need to make 40+ hp.
Yep!
I did a port job for a buddy many years ago on his d16 and he dynoed 148whp. And im not a professional but have done a fair bit of porting before. You explain all the details very well.
That’s some good work and very nice results props to you man!
@@SRDmotorsports thank you. Just found you and subbed. Will check out some of your other videos.
@@epjettaoh thank you man! I used to be a forumer when the forums were still active and luckily that was the time when I was starting out so learned quite a few and so part of the reason of the channel is that… to sort of return what we all got from the forum days, info sharing
Granted it advertises my shop either way 😂
good job 👍
Thanks man!
10/10 🔥
Thank you brother! Glad u liked it
For the 92-95 EG on D15b7 and CRX’s with a D16a6! A pm3 head porting vid
ua-cam.com/video/J57v3iA5zhc/v-deo.html
Very nice Sir!! why not shape a little around the intake valve bosses, loose velocity or not necessary in this application just curious about that particular area always intrigue me!! 👍💪
Cool question! Yeah we could do that and sometimes it’s needed yeah but on “my” way slimming that out also adds “port volume” or increases it,
That’s the story why when some use those kinds of head? And don’t reach their goal? Those involved would say “needs more comp” or “needs more cam” or “needs more rpm”
Which all says “too much” port volume
On that project for Austria (the ones dynoed) run GT35 and good ecu so we know power is expected from boost and the head can be street/mild and still do good? Heck they made 400whp on stock head :)
@@SRDmotorsports Yeah that's what i though ,more area need more cam ,more comp and all of that jazz .Thank you sir for the fast answer and keep em coming !! love the series specialy the D series engines stuff.
@@Rodman8500 thank you man glad it’s enjoyable and we will try to improve some more
No real gain to grinding those way down. They help pull heat out of the valve strem which is way higher boosted
Sick
to inspire for sure!
Free jewels being dropped
the wise will definitely pick up some goods 😎
Love honda guys because they are usually the only people that are doing more than slapping a turbo on and cranking up the boost to make power..They actually build the engine. Why i was on honda forums to build a mitsubishi because NO ONE builds a 6g72 all-motor so the only knowledge base to do a max-effort all-motor build for one is honda guys. And welp i have a 3.0l v6 that runs like a honda motor lol. Not much torque down low and everything up top and it goes 9k rpms+.
Wow 9+ k rpms!!! That prolly does sound real good!!
and maaaan I see we both did find the old Honda Forums real good and fun 😎
@@SRDmotorsports Its got a really weird engine tone. Being 13:1 cr with a built bottom end bc625 rods and ross 12.5:cr pistons with a resurfaced head that was ported,polished,brass valve guides, Bc springs and retainers, Ferrea +1mm valves, 272 cams, GSC dsm lifters, 3sxcam gears, Block was bored from 91.5mm-92mm, entire bottom end was re-balanced and its got an aluminum flywheel on it. Even polished the combustionc hambers on it..And completely gutted the car so 1 seat with an 8-point cage, no abs,A/C power steering and its on solid engine mounts with a built trans using a quaife qdh7b Lsd. Also has a holley Ls intake and adapter from breton performance in puerto rico from their 9sec all-motor 6g75 mirages with a 95mm Gm throttle body. So its all top end. My data logs are hilarious it can go from 53cfm of airflow at 2% throttle to 274cfm airflow at 7% throttle lol right off the graph. lol.
Maaaaaaan now that’s an engine right there!
oh if F1 did an NA v6 today 😎
@@SRDmotorsports Biggest problem i keep running into is no tuner wants to touch it in my area and a lot of parts were 1-offs. Tuners dont wanna touch it because its like 1 of 2 all-motor 6g72's in the country the other is technically a 6g74 built in n.c still using the stock intake manifold. So wound up having to teach myself how to tune it through ecuflash. The irony of having to learn how to tune a car because the pros wont touch it is not lost on me. Im really trying to describe the engine sound..Its more like a yamaha R1 with the cross-plane crank in it. Definintly sounds more motorcycle than car.
I understand that part where no tuner wants to touch it… and no hate to the tuners a lot out there are really good and good people
But most aren’t builders…so for safety they avoid it but as a builder + tuner I understand why… it’s also why I don’t throw hate like most tuners 😎 cuz I’m a builder first…
And that’s good u getting to tune ur stuff u got an advantage cuz Ilu understand the motor well as per your design…
And oh yes!!!! Now I can imagine the sound since u mentioned m1 maaaaaaaan that sounds tough!!! 😎
So you didnt know this was going to be a turbo engine? This is how you port one of these heads in general? Are there specific changes you aim for with NA vs Turbo porting?
I knew it was for a turbo
What's the difference between a D16Z6 VTEC head and a d15b VTech Head from what I heard they are basically the same I'm trying to figure out I want to put a d15 on a d16 z6 built bottom half with with h beam rods YCP pistons but I am planning on rebuilding the head with some BC valve springs Ferrara valves and a street Savage cam from speed factory I originally bought all the parts for a d16 head wondering can I still use the parts and put it in a d15 b head I'm assuming I can what's your opinion
Same casting actually
This while you are in there attitude porting makes a big difference to almost any engine 1 ltr or ,7ltr self ported two mgb carburettored cars huge power gains on original heads , economy and acceleration,from factory can be bad even BMW's can be improved as manufactured with minimum engineering your free time makes all the difference ,port from air filter to outlet manifold removing the rough cast to speed the flow.
That’s so true
Where can I buy those sanding rolls?? I cannot find any that is like these you have.
I just cut them and roll them off a bigger roll hence I put masking tape at the base to hold it together
ported p08 manifold and head + b16 throttle how much gain for stock p08 bottom end
Really depends could be 5hp could be 20hp but it will have gains for sure
sorry if this is a stupid question, if i have the same engine but with full bolts on do u think this u will improve engine performance?
Actually after “bolt ons” that’s the next step including tuning Ofcourse so definitely improvements can be had
@@SRDmotorsports thanks alot , what do u think its better an d16z6 head or d16y8 ?
Both are more than okay… I mean
Unless you are building an all out racer
Then I’d prolly choose the z6 then
how do youu clean the head between shaping?
Just water and liquid soap
Do you think porting the head on a stock engine with bolt ons would merit decent horsepower?
On a d16? Yeah it could merit a decent gain… on a b16 maybe a little less… mainly due to port volume of the b16 head and it’s displacement now if it was a b20vtec it’s a diff story
@@SRDmotorsports okay thanks I recently put a skunk2 pro intake manifold and 66mm throttle body and was looking for some more ways to free up some horsepower
@@SeriouslyLarge oh definitely it be worth it for u
DIdnt see a valve job or short turn work? WHat was your bef and after volume?
We always do a valve job after… and short turn work on other vids u can see em… the rest is on the notes
@@SRDmotorsportswhat’s up bro, I have a project going on and you seem to have an extreme amount of knowledge on this subject. I’m sure you’ll get a laugh at what im thinking about doing but here goes. I have an ‘09 Tacoma base model with a 2TRFE 4cyl motor, im at 265k and I know im going to need to either rebuild or better yet a 1GR v6 swap or if I hit the lottery a 2URGSE 5.0 swap but realistically funds are limited here. These little 2.7 couldn’t be any more under powered , any slower and I’m in reverse. There is the option for running a SC from URD but that’s also almost 5k for just the set up not including the labor to install and tune. So here’s my question and sry for the long background, have you ever done a Toyota 2TRFE head and would it be worth it if it would be possible to do? I know it sounds crazy but I would love to have more power in my little tacoma. Thanks in advance.
I havnt tried a 2Yrfe but I’m sure a slight port clean up and a decent valve job could def help breathability
Bro what you think about a d15b2 block with a d16z6 head a 272 cam but with out the VTEC will be a nice set up all motor including the y8 head gasket compression probably 10.1-5 reason the VTEC really start to pull in higher rpm compare to no VTEC what you think plus less expensive with computer crap
That sounds interesting yes indeed
@@SRDmotorsports the reason I ask is because I'm going to try it myself I think by putting the d16z6 vetc head on a d15b2 block is the best combo mini me because raices compression to 10.1 and probably 10.5 with the y8 head gasket and above all with a 272 Delta cam regrind I think the d15b2 block with become a beast with higher compression and higher rpm and lighter flywheel gd clutch kit gd air filter should be nice more bulky in response plus I don't like short transmission gears that mostly for races I'm talking more like to play around cities and highways the short gear will come down shifting from 5 gear to 3 gear jjjjj 😁 what you think bro
@@SRDmotorsports plus the d16z6 head flow nice with a header and 2 1/4 free flow exhaust system should be nice combination with the d15b2 block and compression 10.1-5 and the 272 Delta camshaft and 10 pound flywheel should do for a snickey rascal voodoo child CRX jjj 😁 it should work what you think with you experience in d series engines imagen with you bore out intake manifold more air more better and a bigger Honda Accord tb should fly and be real gd on gas in my opinion
@@salrivera7578 yeah and it’s easy to make the z6 head to flow well
That’s true
can i use this method to the R18A SOHC engine cylinder head?
could work but the exhaust port of the r18 is one for all and must check how it flows or where it lacks too
Dear Sir ! let me ask 2 vale ports are you using the 89% formula, and the large gate is calculated how the formula. thank you sir
Yes 89% formula on the intake
The exhaust I just clean up
The large gate is only enlarged a little bit maybe not more than 5% as it’s already enough
@@SRDmotorsports yes I understood, thank you for sharing useful knowledge!
No problem my friend :) thank you for checking the video Ofcourse hehe
I ave a d16z6 to put on my d15b bottom half. What do u think about it?
Well that would be real close or the same as a JDM d15b which is a good n stout geometry that’s good!
will this porting work on a non vtec head as well?
U port the head by improving where or what it needs to improve so on non vtec heads try to improve it not by replicating what works for another platform
what does it cost to do a head for someone from uSA?
the shop page has a pricelist pinned though local currency the exchange rate favors the USA 🤣 but depending on core sometimes getting a core here may be cheaper than sending the head from there to here then port then send back
Saves one way shipping brother.
And then u have the Legendary Phong port.
Oh I haven’t tried that one 😎
What all heads do you port ?
most we can study and what they need
We done dam 4g63t, a couple of sr20 for the pro driver Mark Bernardo, a handful of black top 4age some of which were turbo
My hobby is my vw so ofcourse my dads and brothers vw like mine has ported heads
We did a 1967 Alfa Romeo heads (three of them) for someone in Australia
@@SRDmotorsports where are you guys located at?
Philippines
Were stock cams used or aftermarket cams?
I believe this was either stock or compcam 59300
So yes, it was either stock or aftermarket!!! ROFLMFAO!!!
@@Anarchy-Is-Liberty when I reread it now 😂
How much do u charge for a k20 head ?
For porting $370-455
Where you guys located how can i send my head out to you
Philippines
Where are you guys located
Philippines
What turbo?
Gt35 I believe
Bro used gooder and concentric in the same sentence
Hey… we try to be “concentric” sometimes 😂🤣😂🙏🙏
97 whp out of pnp heheh my entire d16y8 is 97 whp😂😂😂
it’s mainly cuz their set up with the proper turbo and manifold, made the “stock” head the extreme limiting factor that’s why hehe
@@SRDmotorsports got it brother
But def more than a night and day difference like whoa hehe
@@SRDmotorsports for these reasons i want to send my y8's head to your place on Philippines,i know you working on it would be a worth it thing but unfortunately it will be too expensive,back and forth,right?
where are you from again? Prob is we don’t get the d16y8 here just the d16y5 I think that is, the one with the same head but with roller cam
On a d16?!?! Wtf…
they changed shop name… that’s why I didn’t mention it but in Austria they held the 1mile record for years (until now I think) with this street engine
What die grinder do you use and is it variable speed
Not variable speed just a Makita die grinder