AndyT Posted July 3, 2008 Share Posted July 3, 2008 ah i am sorry but I didnt pass english at school so i am very bad with my punctuation and grammers. Please help. Red. This is correct. Grammar is singular. didnt = did not so should be didn't. Actually the more you browse around here the more you english will improve. So, even better. 344 is pretty darn good too. Stock is 320 ish. A full service by a garage who know the Supra. Cure the misfire, take the cats out and fit a 1.0 bar restrictor. If you're jspec 1.2 bar will be at the highest achievable but will probably be lean at full revs. That means high exhaust temps and possible damage. Curing that means bigger injectors and preferably a new ecu and mapping. Do a check for Cheekymonkeys recent thread. All the best Quote Link to comment Share on other sites More sharing options...
Guest ckuky2k Posted July 3, 2008 Share Posted July 3, 2008 Thanks Andy. the guys at Dyno Demon said if it didnt have the misfire it would have close to 355 360bhp i so am going to get the misfire sorted and do a fullservice and stick it on for a re-run and see what i get. i have read about bpu so i am thinking of taking it to Camco to increase the boost and fit the restrictor ring to increase boost to 1.1bar and see how much increase i can gain. anything close to 400bhp i would be very happy. ;-p is my grammer skill improving??? Quote Link to comment Share on other sites More sharing options...
AndyT Posted July 4, 2008 Share Posted July 4, 2008 (edited) Thanks Andy. the guys at Dyno Demon said if it didnt have the misfire it would have close to 355 360bhp i so am going to get the misfire sorted and do a fullservice and stick it on for a re-run and see what i get. i have read about bpu so i am thinking of taking it to Camco to increase the boost and fit the restrictor ring to increase boost to 1.1bar and see how much increase i can gain. anything close to 400bhp i would be very happy. ;-p is my grammer skill improving??? Loads better. I'm a little dubious of the 355 figure on a stock car mate. At least you're doing it right and reading up on the literature. Do it right and you won't incur those extra costs. ie damage. Keep us updated. Edit. The definitive rolling road guide. Link Edited July 4, 2008 by AndyT (see edit history) Quote Link to comment Share on other sites More sharing options...
letmeshowyou Posted July 4, 2008 Share Posted July 4, 2008 I'd suggest getting the cats out before increasing boost by too much (if they're still in at the mo) Quote Link to comment Share on other sites More sharing options...
Guest ckuky2k Posted July 4, 2008 Share Posted July 4, 2008 Does.t your boost goes up if u decat it? Andy i have a front mounted intercooler, induction kit and a full stainless steel exhaust added so that should have gain abit more power. I got the spark plugs today NGK platinum try to put it in but who ever had the car previously have shedded one bolt so i leave it to the garage to do it now, so i will not know if the misfire is cure until late monday. Fingers cross it will. Also going to Camco in Warrington to see the speciallist to see what he can do about BPU and the cost involves. Quote Link to comment Share on other sites More sharing options...
bodilx6 Posted July 7, 2008 Share Posted July 7, 2008 Let me give you this info: My J-spec did 354 bhp with 2nd decat, and full 3" exchaust, 1st cat still in. With the 1st cat removed and hitting 1.2 bar it did 390 @ 20 degrees celsius. Everything else stock (except for a walbro pump for safety and gapping the plugs) including the IC. Change that and I would guess crossing the 400 mark especially on cold days would be no problems. Quote Link to comment Share on other sites More sharing options...
j80leo Posted July 7, 2008 Share Posted July 7, 2008 mine did 435bhp @ the flywheel and 365@ the wheels have a look in my garage for mods i have also got a uk engine with the uk cams;) Quote Link to comment Share on other sites More sharing options...
Thorin Posted July 7, 2008 Share Posted July 7, 2008 BPU stock is 0.9bar so you have a boost leak my friend, my advice to you is to get a full and comprehensive service including all fluids, check over all turbo hoses to get your boost upto 0.9 again and get that missfire sorted before you even look for more power I've seen this posted a couple of times recently. Stock boost is not 0.9 bar... but yes BPU is the way to go. Quote Link to comment Share on other sites More sharing options...
letmeshowyou Posted July 7, 2008 Share Posted July 7, 2008 mine did 435bhp @ the flywheel and 365@ the wheels have a look in my garage for mods i have also got a uk engine with the uk cams any times from the drag strip? Quote Link to comment Share on other sites More sharing options...
Axle Posted July 7, 2008 Share Posted July 7, 2008 So is the general concensus that 256/264 cams are not worth it and make little difference unless your putting out over 500 BHP? Quote Link to comment Share on other sites More sharing options...
j80leo Posted July 7, 2008 Share Posted July 7, 2008 any times from the drag strip? sorry not been tested yet might try it this summer;) Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted July 7, 2008 Share Posted July 7, 2008 So is the general concensus that 256/264 cams are not worth it and make little difference unless your putting out over 500 BHP? The cams become strangled above around 450bhp iirc. Quote Link to comment Share on other sites More sharing options...
Axle Posted July 7, 2008 Share Posted July 7, 2008 Sorry for my ignorance Gaz, but can you describe what you mean by strangled? I thought they were supposed to add a good 15 BHP? Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted July 7, 2008 Share Posted July 7, 2008 Sorry for my ignorance Gaz, but can you describe what you mean by strangled? I thought they were supposed to add a good 15 BHP? I meant the stock J spec ones. They begin to run out of puff at higher rev ranges at around the 450bhp mark. Adding new cams might add some more power but it depends what else you have done as to how much. Adding cams for me would be more about the power band than the extra few horses though. Quote Link to comment Share on other sites More sharing options...
Axle Posted July 7, 2008 Share Posted July 7, 2008 Oh right yeh i see what you mean Gaz. Thanks for clearing. Would you says its worth it with a BPU Supra which is Emanaged for instance? Sorry for thread Hijack btw. Quote Link to comment Share on other sites More sharing options...
supra_aero Posted July 7, 2008 Share Posted July 7, 2008 I meant the stock J spec ones. They begin to run out of puff at higher rev ranges at around the 450bhp mark. Adding new cams might add some more power but it depends what else you have done as to how much. Adding cams for me would be more about the power band than the extra few horses though. interesting thread. Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted July 7, 2008 Share Posted July 7, 2008 Oh right yeh i see what you mean Gaz. Thanks for clearing. Would you says its worth it with a BPU Supra which is Emanaged for instance? Sorry for thread Hijack btw. It depends what you're ultimate aim for the car is TBH. A lot of people have had good results at BPU with cams but I've heard others say it's not worth the hassle for the minimal gains. If however you would be looking at a small single in the future then the cams would be a fantastic idea to make the most of it. When you get to 500bhp levels the cams really come into their own. Then again, if you're going for a big single, built engine etc then you'll require very different profile cams again and they wouldn't work too well drivability-wise at BPU levels. As always, it's a compromise to an extent. Quote Link to comment Share on other sites More sharing options...
Axle Posted July 7, 2008 Share Posted July 7, 2008 Cheers Gaz, very informative. Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted July 7, 2008 Share Posted July 7, 2008 NP - I can be helpful from time to time Quote Link to comment Share on other sites More sharing options...
Guest ckuky2k Posted July 7, 2008 Share Posted July 7, 2008 thanks bodil... Now that i have sorted out my misfire and it rrunning like a beauty so that is very good news. Replace the original spark plug with NGK Platitnum tip which cost £12 each but it money well spent for the extra power. I will be taking my car to camco in Warrington to get the bpu sorted out and try to up it to 1.1 or 1.2 which ever is safer and put it on dyno again to see what figure can be achieve. you guys have been a great help thank you to you all very very much. hehehe Quote Link to comment Share on other sites More sharing options...
Guest ckuky2k Posted July 7, 2008 Share Posted July 7, 2008 ah yeah i forgot about someone saying the standard boost is 0.9 bar. it is 0.76 on the j-spec so i show gain quite a few bhp when the BPU is done. very happy hahaha Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted July 7, 2008 Share Posted July 7, 2008 Appologies if I have caused any confusion with the 0.9bar comment, this is what mine hit at stock levels Quote Link to comment Share on other sites More sharing options...
Guest ckuky2k Posted July 7, 2008 Share Posted July 7, 2008 i have check with my local garage and they check it up and say it 0.76bar at standard. What spec is your car mikey??? it is uk? Quote Link to comment Share on other sites More sharing options...
Homer Posted July 7, 2008 Share Posted July 7, 2008 I meant the stock J spec ones. They begin to run out of puff at higher rev ranges at around the 450bhp mark. Adding new cams might add some more power but it depends what else you have done as to how much. Adding cams for me would be more about the power band than the extra few horses though. Yep. Just as a comparison, my T67 made 545fwhp on stock cams. Ian C's car dyno'd a few minutes later which had exactly the same spec, except a pair of 264 cams, made 565fwhp. So even with a lot of extra mods the difference isn't all that great Quote Link to comment Share on other sites More sharing options...
supra_aero Posted July 7, 2008 Share Posted July 7, 2008 Yep. Just as a comparison, my T67 made 545fwhp on stock cams. Ian C's car dyno'd a few minutes later which had exactly the same spec, except a pair of 264 cams, made 565fwhp. So even with a lot of extra mods the difference isn't all that great interesting... Is it safe to run with standard cams with that much hp? Quote Link to comment Share on other sites More sharing options...
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