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    1. 11-09-2006 06:17 PM #26
      Quote, originally posted by stealth GTi »
      no, you can't.... im not exactly sure but 20 psi on a stock rebuilt motor even with a headspacer will result in nasty things

      negative, sir...you can run 20psi on your stock internal VR6 w/ a headspacer. 8.5:1 would be ideal but I've done it on my 9:1 headspacer. It's pretty much for the dyno only but a highway run on 20psi isn't out of the question.
      I would NOT daily drive 20psi straight up though...so that part of ervlydeux's statement isn't wise....you can if you want, though.
      My Black Box | Kenwood X792 | Soundstream STL1.600D & 2.560 | CDT CL61a | RE SRX15 | Streetwires | TechFlex | PowerWerx

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    3. 11-09-2006 10:01 PM #27
      Quote, originally posted by KVR6turbo »
      I bet 3.2 24v will hit close to 1200 whp if someone actually does it to the level that some of the 12v guys have done.

      Exactly what i feel.. Supra's heads are sick and the closest thing we have to that is our 24v's.. A sick R32 fully built stroker motor to a 3.5-3.6L should be nasty... Supras go from 3.0L to 3.3-3.4L and make 1100-1500whp

    4. 11-09-2006 10:58 PM #28

      this is a 12v vr6 that runs 9.60's in the quarter. notice my car in the background, ( red gti )

    5. 11-09-2006 11:28 PM #29
      ^That was the one I was thinking of.
      Quote Originally Posted by mhjett View Post
      I'm convinced you commuted through a salt mine.
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      Bariman82 is the king of rust patching...He is the guy you want to talk to.
      My take on fixing a rotten mk3.

    6. Member mk2vrooom's Avatar
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      11-10-2006 08:30 AM #30
      Quote, originally posted by erevlydeux »
      I never said you couldn't, only scoffed at the notion you could daily 20 psi without a built motor.

      actually...you can daily drive with 20 psi...why not? dont crack on it and you wont hit boost...crack on it sometimes partial throttle partial boost and you will be fine...slam on it sometimes n you are fine too...its all in how you drive...and how well your car is tuned

    7. Member Scurvy Bandit's Avatar
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      11-10-2006 01:55 PM #31
      I know that a VR will never compare to the power output of a Supra. Plus a Supra is a supercar!!
      so there is no solution for the head flow? Just wondering how much better the BVH head flows that the OEM head?
      Anyhow back on topic. I was in a friends 695 whp supra with a single turbo conversion and old engine management stuff and well... I think I am .1257 of an inch shorter than before I was in this car. I couldnt even imagine what 800 feels like. holy hell....
      I used to rollerblade, I think Im going to give it a go again.

    8. 11-11-2006 02:53 AM #32
      its very simple...the main thing holding a VR6 back is the head design...1 cylinder head and 6 cylinders just doesnt work well
      thats pretty much why they went to the 24v VR6's....look at what the 3.6 is putting down 280hp in the new passats which isnt far from the Nissan 3.5 which is at 300...so the vr6 does not have an issue with strength or anything like that...its just the crap head design of the 12v....you wanna make big power....go get a 24v

    9. Member CDJetta's Avatar
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      11-11-2006 04:18 AM #33
      the 3.6 heads might be different from the 3.2 heads. Not sure. I think on the 3.6's they had to change the degree at which the cylinders are to somewhere near 10degrees i think.
      '78 Mercedes 450 SLC, '87 Scirocco 16v, '97 Audi A4, '98 Jetta TDI, '08 Toyota Tundra

    10. 11-12-2006 01:38 AM #34
      The piston's in the earlier vr's were at a 15 degree angle from one another, but to get 3.6 liters out of that style engine they went to a 10.5 degree angle, so says motor trend, automobile, etc.
      As for the power output, it's all in the head design like everyone said. Look at the 5 cylinder 20 valve engines. You can beef up internals all day long(like in the dahlback car, that's far from stock) but without a head design that allows enough smooth flow, you're limited to what you can get [IMG]http://*****************.com/smile/emthdown.gif[/IMG]

    11. Member BumblebVR6's Avatar
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      11-12-2006 03:08 AM #35
      Quote, originally posted by IHateSpeedBumps »
      As for the supras i have owned one and they are easy as hell to get over 650whp outof

      Really? What did you do w/ it? MK3 or 4? T or N/A?

    12. Member BumblebVR6's Avatar
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      11-12-2006 03:29 AM #36
      Quote, originally posted by GreenGolflll »
      Keep in mind power to weight ratio...
      a 1200hp supra will run 9s/10s

      9s are easily achieved w/ 600whp. Here is my friend Duy's for example making a little over 600 from what I remember at the time of the run:
      http://www.boostlogic.com/videos/duy9.9.mpg

      And here is his 240 w/ a 2JZ motor making over 1000whp(dyno graph stopped at 1000) running an 8.60
      http://media.putfile.com/DUY-240-2JZ-POWERED



      Modified by BumblebVR6 at 1:34 AM 11-12-2006

    13. 11-12-2006 10:35 AM #37

      holy ****
      was the supra auto ??? i herd the different gears but i didnt see the car move at all.
      the 8 second run was crazy that thing was ****in moving

    14. Member BumblebVR6's Avatar
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      11-12-2006 01:30 PM #38
      Quote, originally posted by shortshiften »

      holy ****
      was the supra auto ??? i herd the different gears but i didnt see the car move at all.
      the 8 second run was crazy that thing was ****in moving

      Yes, the purple car has an auto, built by Level 10. I can't remember what tranny is in the 240 but I believe its a domestic chevy auto trans and rear end from the last time I saw it.

    15. Member danzig20v's Avatar
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      11-15-2006 01:14 AM #39
      mmm supra
      ive rode shotgun in a 955whp MK4....
      and yeah...couldnt get the smile off my face for a good week it seemed haha

    16. 11-15-2006 10:07 AM #40
      955whp mk4 ya i would like to say bullsh*t

    17. 11-15-2006 11:32 AM #41
      Quote, originally posted by ShaggyVR6 »
      955whp mk4 ya i would like to say bullsh*t

      He's talking about a MKIV Supra not a MKIV VW.

    18. Member Soupuh's Avatar
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      11-15-2006 12:00 PM #42
      Hondas for DAYS...

    19. Member ThaCorradoKid's Avatar
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      11-15-2006 12:20 PM #43
      when you have more space to work with, you have the ability to design things for optimum flow. when you have limited space, things must be sacrificed. try putting a supra motor in a mk1. the motors were designed for entirely different purposes, and the fact that this thread even exists is a testament to the design of the vr6.

    20. 12-25-2006 05:48 AM #44
      Im curious as to how so many Supra posts got chucked in here . I think VR owners dont want to go that 1 step further in extracting the most out of the 12V VR6 . The head is the weakest link which everyone agrees . My theory :
      If you cant flow the head then raise the boost . Make it run 40 psi + .
      To strengthen the remainder of the engine nitride the crank , run a nice set of strong rods , forged pistons , low comp . The cylinder head will be the key . Lighten the whole valvetrain , run a solid lifter head conversion , a beefy set of cams and make the sucker rev . I dont think you will have too many issues with the bottom end , pistons speeds will be great but do-able , Valve springs , valves , collets etc can all be titanium . If budget permits let the rods be titanium . I dont think anyone has ever really pushed a 12V anywhere near the true limit .
      Ive got a nice big fat GT45R and 60mm HKS Wastegate at the shop , car goes up to the fabricator in about 2 weeks . Lets see if my theory sinks or swims

    21. 12-27-2006 07:18 AM #45
      Quote, originally posted by mk2vrooom »
      actually...you can daily drive with 20 psi...why not? dont crack on it and you wont hit boost...crack on it sometimes partial throttle partial boost and you will be fine...slam on it sometimes n you are fine too...its all in how you drive...and how well your car is tuned


      I ran 30psi with head spacer without any problems.
      Its been turboed since 2001 and is driven to work all day every day

    22. Member lil8v's Avatar
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      03 20th ann..retired 97 gti that was a lil bit of everything
      12-28-2006 05:17 PM #46
      there are two locals in union new jersey who have made over 8** horsepower on a dynojet dyno on 12valves
      2003 mk4 20th anniversary 10.30 at 151
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    23. 12-28-2006 05:57 PM #47
      damm I just rode in a Raddo runnin a little under 5XXwhp and that thing was spinnin into 5th. Do they drive them on the street with that kinda tune?

    24. 02-14-2020 04:54 AM #48
      Hi gents...

      My name is Ray,
      I am from South Africa
      I am new to the platform for the last 6 years been building a golf 2 12v 2.9L turbo
      I was wondering if you guys can help me and advise me correctly.
      I have done the head work, bored the block and installed forge internals. 1000cc injectors .Have done the crank finally I put garret GTX35. Now all that I have to do is a proper Dyno tune

      My goal is to see if I can build the fastest street legal FWD in S.A and what is the max power I can get out the VR6 12v 2.9l

      please tel me what you guys think and what I can do to improve it

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