With decent care and reading up on the 6.5 care and feeding, they will go a, long time. Nice seeing the 6.5 getting attention. We have the Diamond Eye on our truck along with the 2.5 crossover. We may fit an intercooler on her sometime in the future. Thanks for posting. On another subject folks, Bullwinke will not be making his guest appearance on the show tonight!
Howdy, Thanks for sharing. Liked and subscribed. I have a 88 Chevy p32 step van (former USPS) with the 6.2 j code diesel. I was wondering if the heads on these are like the pickup trucks or different angle like the HMMWV and Chevy and GMC passenger vans? Id like fo furbo it, and im thinking a side mount setup might not clear. Any advice is much appreciated. Keep up the excellent videos. 👍 👍
If i recall correct n/a and turbo side mount cylinder heads have the same angle for manifolds and you could always make your own manifolds its not that hard if you got the tools and know how
@@dieselnation555 Thanks, Yeah, that sounds right to me too. I have the upper and lower turbo intake from pickup truck setup that I was originally going to use on my m1008 CUCV which I'm in the process of selling due to moving. I'll likely do some measuring and figuring for now until my more permanent move. I'm looking forward to the weather in the deep South for a bit longer and warmer all year round working on stuff outside type thing. Many years ago, I was also thinking of using a Garrett or KKK turbo from a Mercedes om617 I-5 3.0 liter turbo diesel, one for each bank. That was many years before owning my first 6.2 diesel. I think I was maybe 13 or 14, then I later realized a couple or few years later, someone went that route on a square body Chevy or GMC. I'm trying to remember what magazine I saw it in. Yeah, there's always a way. I'll be sure to take plenty of pics and video of the build. It's great seeing others like yourself sharing knowledge and advice on what's worked and the different setups. Thanks again and keep up the great job y'all do on these engines. I definitely look forward to them, and nice to see someone showing the potential these engines have when done right. I personally think they've gotten a bad rap, but it goes to show, with the right mods and maintenance that they can be reliable and put out good power. I love the simplicity of these and other pre emissions diesels. I suppose I'm a bit old fashioned/old school as I'm also a fanatic of the 2 Stroke Detroit Diesels. 👍 👍
Thats what i like to hear lol I got another top 10 upgrade list coming soon and same thing with other topics along the same lines too Im just trying to compile the info in a way that is less time consuming for everyone
iv always wondered y we put anything bigger than 3 inch on if were limited by the 3" outlet at the turbo.. id like to see numbers n see if it makes a difference ..i guess if nothin else it does make it sound better.. id like to find n hx series turbo to run maybe itll have somethin more substantial 3" is probably enough for that little thing
Also the longer a pipe gets the more restrictive it gets. So if it was 3 inch straight off the turbo yea no restriction. But shoot the pipe to the back and you suddenly need bigger because of drag on the pipe
That's a good list of upgrades there I think! What about injector pre-cups though? May not be critical, but if you're taking off the heads anyway, might as well change them out to something that plays nicer with the turbos and injectors. Nice to see a twin turbo config too! I'm definitely interested in doing something like that. Even cooler would be to get rid of the crossover pipe and go full dual exhaust! Don't forget the harmonic balancer upgrade so you don't eventually break your stock *cast* crankshaft (instead of forged like Detroit specified). And take a look at upgrading the oil hosing and water pump and the radiator & fan. You need that reliability before you can safely do power upgrades without something failing catastrophically down the line. Also an upgraded main belt pulley may do a lot of good so the belt (which runs some critical components) runs smoother and doesn't wear out as quick. Maybe consider timing gears instead of chain, for precision and longevity.
Can't put everything in one video gotta save some for a part 2 list lol but yes precups are a Performance upgrade. I do have the cross over deleted and my truck is a true dual configuration for the exhaust it's much handier than single pipe because you can find out engine malfunctions super fast. As for the harmonic balancer and crank shaft that's a bullet proofing upgrade it won't get you more horsepower but it'll let you make more power reliably. Stock water pump are fine and fan and radiator upgrade are a waste of money I've tried everything except the radiator and none of it works there's 2 simple cooling upgrades that cost approximately 100 bucks combined and it works worlds better than anything quadstar or any other site sells. Other wise the timing gears isn't worth the money for its extra "reliability" if it didn't cost a arm and a leg I'd include it in the lists to come but honestly it's far to expensive for the reliability you gain
@@dieselnation555Oh, so you do run dual exhaust. Sweet! So you're basically saying that installing an intercooler is the best thing you can do for better thermals? But is that the only things that makes a difference? I just find it hard to believe that an engine that is prone to overheating from factory only benefits from adding an intercooler and nothing else needs improvement. At least others on YT have reported improvements with upgrading radiator and water pump. Maybe the pump only makes sense if you also upgrade the radiator. Or maybe their stock pump was just going bad. I'm curious, how does running a twin turbo/exhaust setup affect thermals for you? Is there any difference?
@Arexodius yessir and intercooler is pretty good but combine it with methanol injection and you get power and even lower iat and egt's. But no you can't buy a intercooler set up for less than 100 bucks lol I'm talking about the reducer fitting for the water pump from the coolant crossover pipe and making a rear coolant cross over pipe those 2 upgrades alone will keep your 6.5 cooler than it actually needs to be 100% and combined those 2 upgrades are less than 100 bucks. I've used the water pump and fan and clutch upgrade the truck couldn't haul itself up hill without over heating lol I never tried the radiator but I know people from the Facebook groups who've done all the quadstar upgrades and still have over heating issues so they spent over 1000 bucks for basically no good reason. And I've ran single turbo trucks with stock turbos and after marker turbos both of those trucks would get up to 1200°c super fast the twin turbo set up has only seen 750°c at wide open throttle going 190kmh giving her all she had to offer. Performance wise twin turbos are the best set up you can currently make yourself. Also the turbos only do half the work for the same amount of performance only thing is with mine having large turbos it suffers on the lower end power until it builds boost that is lol
@@dieselnation555Thanks for the advice! I'll have to look into that. I saw a video with www.youtube.com/@shawnsgarage where he explains how he routed cooling lines to the back of the engine. Seemed like a neat setup. Cortland from GSC also suggested doing that. When it comes to water meth I'm a bit apprehensive. I get how it helps a lot on several fronts, but I'm also hearing about increased risk of corrosion on the inside of the engine, the last place you want corrosion. If there is any truth to that whatsoever, I'm not sure it's something I'd wanna invest in despite the advantages. Unless these kits allow you to postpone any injection until everything is a bit warmer and then shut off the injection at least a couple of seconds before engine shut down to keep any residual moisture out of the internals, since steel and moisture in normal outside temps is a perfect recipe for corrosion. IDK. Someone said the nozzle placement played a role in how much corrosion you may or may not see. Seems like a great idea if it weren't for that whole deal. No engine lasts forever, but I'd sure like to come as close as possible.
It wont over fuel the engine it changes the spray pattern and the pressure it takes to make the injectors "pop" making the fuel burn better on top of that and yes it will improve starting and better throttle response, more so if your injectors are wore out an with other upgrades like a tune fore example
@@dieselnation555 the Marine injectors for a 6.5 turbo diesel is a freaking waste of money!! Actually it cost you money the only thing they do is rob your fuel mileage and not paying off with throttle response! The marine fuel injectors is a complete scam and I highly suggest you really check into them!
Are the 6.5 reliable? I heard they suck and the pmd problems looking to build one but not sure if cost and reliability vs a gas swap or another diesel swap . What's the cost and hp/torque numbers?
They're not to bad. Naturally other newer engines are more reliable but with a few simple upgrades you can make them dependable. As for performance bigger turbo and a tune youll feel happy with her look up quadstar tuning and a hx40 on ebay all simple installs and mods relocate the pmd
Would it be wise to just buy HX35 or HX40 as cores, and pay a rebuilder to rebuild them? Perhaps also buy a billet wheel for the process? Maybe that would cost less, yet have more support than the Super 54 or Super 60.
@@dieselnation555 I am not sure if it turns out cheaper. However, there are a huge number of 6.5 parts that are made to make an HX35 or HX40 installation quick and easy. The rebuild Holset HX might not save money, but the installation kit and support might.
@@dieselnation555 it’s a 1998. 2door Tahoe 4x4 with 6.5 turbo diesel and 4L80E transmission. Leroy diesel tow upgrade to the computer, vacuum pump delete, KBD upper intake. New batteries new alternator new pmd relocate kit. Stranded on side the hwy, changed Carter lift pump with a stock shelf autozone pump….made it 2 miles and stalled again. No crank but fuel is getting to the air bleed off valve on top of filter under hood. Injector pump jacket has a bad oil leak there and i can move the injector pump side to side. I need to get the multi point socket to fit the bolts tho.
I just got my cross over pipe fixed! New Mechanic told me he did a 6.5 a few years back and the client also has a 6.6 duramax and after he installed the aftermarket oversized injectors the farmer told him the 6.5 was out pulling the 6.6 he has so I told him to find them for me, and he said they were around 160.00 a piece, cheap
@jeffdelorey1981 "over sized" injectors don't exist. It's basically just different pop pressure these diesels aren't like the cummins powerstroke or duramax
With decent care and reading up on the 6.5 care and feeding, they will go a, long time. Nice seeing the 6.5 getting attention. We have the Diamond Eye on our truck along with the 2.5 crossover. We may fit an intercooler on her sometime in the future. Thanks for posting. On another subject folks, Bullwinke will not be making his guest appearance on the show tonight!
Great list of mods
Howdy,
Thanks for sharing. Liked and subscribed.
I have a 88 Chevy p32 step van (former USPS) with the 6.2 j code diesel.
I was wondering if the heads on these are like the pickup trucks or different angle like the HMMWV and Chevy and GMC passenger vans?
Id like fo furbo it, and im thinking a side mount setup might not clear.
Any advice is much appreciated.
Keep up the excellent videos. 👍 👍
If i recall correct n/a and turbo side mount cylinder heads have the same angle for manifolds and you could always make your own manifolds its not that hard if you got the tools and know how
@@dieselnation555 Thanks,
Yeah, that sounds right to me too.
I have the upper and lower turbo intake from pickup truck setup that I was originally going to use on my m1008 CUCV which I'm in the process of selling due to moving. I'll likely do some measuring and figuring for now until my more permanent move. I'm looking forward to the weather in the deep South for a bit longer and warmer all year round working on stuff outside type thing.
Many years ago, I was also thinking of using a Garrett or KKK turbo from a Mercedes om617 I-5 3.0 liter turbo diesel, one for each bank.
That was many years before owning my first 6.2 diesel. I think I was maybe 13 or 14, then I later realized a couple or few years later, someone went that route on a square body Chevy or GMC.
I'm trying to remember what magazine I saw it in.
Yeah, there's always a way. I'll be sure to take plenty of pics and video of the build. It's great seeing others like yourself sharing knowledge and advice on what's worked and the different setups.
Thanks again and keep up the great job y'all do on these engines.
I definitely look forward to them, and nice to see someone showing the potential these engines have when done right.
I personally think they've gotten a bad rap, but it goes to show, with the right mods and maintenance that they can be reliable and put out good power.
I love the simplicity of these and other pre emissions diesels.
I suppose I'm a bit old fashioned/old school as I'm also a fanatic of the 2 Stroke Detroit Diesels. 👍 👍
Thanks for this I've been in need of this
Thats what i like to hear lol
I got another top 10 upgrade list coming soon and same thing with other topics along the same lines too
Im just trying to compile the info in a way that is less time consuming for everyone
@@dieselnation555 dh a r g
I love this video but I’m no mechanic, I have a 96 with a 6.5, anyone know a good mechanic in the Tulsa OK area?
iv always wondered y we put anything bigger than 3 inch on if were limited by the 3" outlet at the turbo.. id like to see numbers n see if it makes a difference ..i guess if nothin else it does make it sound better.. id like to find n hx series turbo to run maybe itll have somethin more substantial 3" is probably enough for that little thing
With bends in the pipe it creates some restriction so by upsizing the pipe it allows better flow and you can get hx40s with 4" outlets
Also the longer a pipe gets the more restrictive it gets. So if it was 3 inch straight off the turbo yea no restriction. But shoot the pipe to the back and you suddenly need bigger because of drag on the pipe
That's a good list of upgrades there I think! What about injector pre-cups though? May not be critical, but if you're taking off the heads anyway, might as well change them out to something that plays nicer with the turbos and injectors. Nice to see a twin turbo config too! I'm definitely interested in doing something like that. Even cooler would be to get rid of the crossover pipe and go full dual exhaust! Don't forget the harmonic balancer upgrade so you don't eventually break your stock *cast* crankshaft (instead of forged like Detroit specified). And take a look at upgrading the oil hosing and water pump and the radiator & fan. You need that reliability before you can safely do power upgrades without something failing catastrophically down the line. Also an upgraded main belt pulley may do a lot of good so the belt (which runs some critical components) runs smoother and doesn't wear out as quick. Maybe consider timing gears instead of chain, for precision and longevity.
Can't put everything in one video gotta save some for a part 2 list lol but yes precups are a Performance upgrade. I do have the cross over deleted and my truck is a true dual configuration for the exhaust it's much handier than single pipe because you can find out engine malfunctions super fast. As for the harmonic balancer and crank shaft that's a bullet proofing upgrade it won't get you more horsepower but it'll let you make more power reliably. Stock water pump are fine and fan and radiator upgrade are a waste of money I've tried everything except the radiator and none of it works there's 2 simple cooling upgrades that cost approximately 100 bucks combined and it works worlds better than anything quadstar or any other site sells. Other wise the timing gears isn't worth the money for its extra "reliability" if it didn't cost a arm and a leg I'd include it in the lists to come but honestly it's far to expensive for the reliability you gain
@@dieselnation555Oh, so you do run dual exhaust. Sweet! So you're basically saying that installing an intercooler is the best thing you can do for better thermals? But is that the only things that makes a difference? I just find it hard to believe that an engine that is prone to overheating from factory only benefits from adding an intercooler and nothing else needs improvement. At least others on YT have reported improvements with upgrading radiator and water pump. Maybe the pump only makes sense if you also upgrade the radiator. Or maybe their stock pump was just going bad. I'm curious, how does running a twin turbo/exhaust setup affect thermals for you? Is there any difference?
@Arexodius yessir and intercooler is pretty good but combine it with methanol injection and you get power and even lower iat and egt's. But no you can't buy a intercooler set up for less than 100 bucks lol I'm talking about the reducer fitting for the water pump from the coolant crossover pipe and making a rear coolant cross over pipe those 2 upgrades alone will keep your 6.5 cooler than it actually needs to be 100% and combined those 2 upgrades are less than 100 bucks. I've used the water pump and fan and clutch upgrade the truck couldn't haul itself up hill without over heating lol I never tried the radiator but I know people from the Facebook groups who've done all the quadstar upgrades and still have over heating issues so they spent over 1000 bucks for basically no good reason. And I've ran single turbo trucks with stock turbos and after marker turbos both of those trucks would get up to 1200°c super fast the twin turbo set up has only seen 750°c at wide open throttle going 190kmh giving her all she had to offer. Performance wise twin turbos are the best set up you can currently make yourself. Also the turbos only do half the work for the same amount of performance only thing is with mine having large turbos it suffers on the lower end power until it builds boost that is lol
@@dieselnation555Thanks for the advice! I'll have to look into that. I saw a video with www.youtube.com/@shawnsgarage where he explains how he routed cooling lines to the back of the engine. Seemed like a neat setup. Cortland from GSC also suggested doing that. When it comes to water meth I'm a bit apprehensive. I get how it helps a lot on several fronts, but I'm also hearing about increased risk of corrosion on the inside of the engine, the last place you want corrosion. If there is any truth to that whatsoever, I'm not sure it's something I'd wanna invest in despite the advantages. Unless these kits allow you to postpone any injection until everything is a bit warmer and then shut off the injection at least a couple of seconds before engine shut down to keep any residual moisture out of the internals, since steel and moisture in normal outside temps is a perfect recipe for corrosion. IDK. Someone said the nozzle placement played a role in how much corrosion you may or may not see. Seems like a great idea if it weren't for that whole deal. No engine lasts forever, but I'd sure like to come as close as possible.
Will the Marine injectors improve the performance f 6.5 if your engine is completely stock or will it over fuel the engine?
It wont over fuel the engine it changes the spray pattern and the pressure it takes to make the injectors "pop" making the fuel burn better on top of that and yes it will improve starting and better throttle response, more so if your injectors are wore out an with other upgrades like a tune fore example
@@dieselnation555 the Marine injectors for a 6.5 turbo diesel is a freaking waste of money!! Actually it cost you money the only thing they do is rob your fuel mileage and not paying off with throttle response! The marine fuel injectors is a complete scam and I highly suggest you really check into them!
Excellent to know 👍👍
Are the 6.5 reliable? I heard they suck and the pmd problems looking to build one but not sure if cost and reliability vs a gas swap or another diesel swap . What's the cost and hp/torque numbers?
They're not to bad. Naturally other newer engines are more reliable but with a few simple upgrades you can make them dependable. As for performance bigger turbo and a tune youll feel happy with her look up quadstar tuning and a hx40 on ebay all simple installs and mods relocate the pmd
And make sure your exhaust system is up to par! Just replaced my cross over and no leaks what a difference
What head bolts an studs should I use for max boost
Anything from quadstar
Would it be wise to just buy HX35 or HX40 as cores, and pay a rebuilder to rebuild them? Perhaps also buy a billet wheel for the process? Maybe that would cost less, yet have more support than the Super 54 or Super 60.
That's not a bad idea if it is cheaper atleast
@@dieselnation555 I am not sure if it turns out cheaper. However, there are a huge number of 6.5 parts that are made to make an HX35 or HX40 installation quick and easy. The rebuild Holset HX might not save money, but the installation kit and support might.
@@skylinefever yes that's possible for sure
Do I need the specific turbo for the 6.5?
Hx40 and give her
“He told me the dimensions, I forgot the word” relatable
Must be from Canada. Likss saying ooot not out
Bahahahaha yeah i also say ouse instead of house an orse for horse lmfao
Fuel at filter No fuel at injector? How to text injector pump?
Electronic or mechanic injection
@@dieselnation555 mechanical I think? How do I tell?
@@briancifreo3214 how long did you crank her for with a injector line loosened?
@@briancifreo3214 is your truck 94 or newer? Can you rev the engine by the pump or only the fuel peddle? Does it have a throttle cable?
@@dieselnation555 it’s a 1998. 2door Tahoe 4x4 with 6.5 turbo diesel and 4L80E transmission. Leroy diesel tow upgrade to the computer, vacuum pump delete, KBD upper intake. New batteries new alternator new pmd relocate kit. Stranded on side the hwy, changed Carter lift pump with a stock shelf autozone pump….made it 2 miles and stalled again. No crank but fuel is getting to the air bleed off valve on top of filter under hood. Injector pump jacket has a bad oil leak there and i can move the injector pump side to side. I need to get the multi point socket to fit the bolts tho.
wow nice video.... with any money you can make anything better.... lol
Man, you got killer eyebrows.
I'll take that as a compliment lolol
Larger injectors
Pretty much no such thing for 6.5s only different nozzle pressure
I just got my cross over pipe fixed! New
Mechanic told me he did a 6.5 a few years back and the client also has a 6.6 duramax and after he installed the aftermarket oversized injectors the farmer told him the 6.5 was out pulling the 6.6 he has so I told him to find them for me, and he said they were around 160.00 a piece, cheap
@jeffdelorey1981 "over sized" injectors don't exist. It's basically just different pop pressure these diesels aren't like the cummins powerstroke or duramax
I watched guys mechanics that it you use marine injectors it'll create 25 extra horses not alot but better for sure!!
Heath diesel makes all the parts for a good price
Yessir
Yo your profile pic did u make your cowl induction hood?
@@dieselnation555 yes I did 6 inch cowl with air induction
@@nicholasdrabek5521 it looks beast af ill definitly be making one for my truck
@@dieselnation555 where u live at I could help u make one we could do a video on making cowl hoods
@@nicholasdrabek5521 I might not live very close lol im in newfoundland Canada
Best upgrade, drive it to the dump, and pick up a Corolla which is definitely faster.
Jokes on you i have 4 6.5s and 1 toyota Corolla already.