Safe Rev Limit

scum · Post by **scum** » Mon Jun 12, 2006 5:47 am

speaking of limited 'gettin giggy wid it' rotational.... stuff. the widebody cuts out at 5k. (2.6L astron) why lower than 2L? i heard a few times (i dont plan on trying it) the Americans, balance shaft equipped, taking them to high 7k almost 8 on a regular basis without causing a piston or 2 from fileing for divorce against its con rod once it realised it 'swings both ways' with the fat crank shaft in the office downstairs?

i think i need sleep ?

DD Phil · Post by **DD Phil** » Mon Jun 12, 2006 8:34 am

OLD FART wrote:35-70 70-35 with 305 lift at lobe .Powerpulls from 3800.Turbo has 1.902 6blade compressor wheel BMW M3CSL with computer chip could not catch me down back straight at Q raceway .Havent stopped smiling yet :D :D

That's such a great feeling. :)

Phil

mrb1 · Post by **mrb1** » Mon Jun 12, 2006 7:35 pm

scum wrote:speaking of limited 'gettin giggy wid it' rotational.... stuff. the widebody cuts out at 5k. (2.6L astron) why lower than 2L? i heard a few times (i dont plan on trying it) the Americans, balance shaft equipped, taking them to high 7k almost 8 on a regular basis without causing a piston or 2 from fileing for divorce against its con rod once it realised it 'swings both ways' with the fat crank shaft in the office downstairs?

i think i need sleep ?

Scum,
what turbo do you have on it? If it's the stock TD05 that's a big part of your problem too much back pressure. Put on a high flowed TC06 it will go heaps better. The 2.6 has the extra cubes to spin it up real nice.
My widebody revs to 6500 RPM no problem at all (with the stock TBI) still making good power as well.

scum · Post by **scum** » Mon Jun 12, 2006 9:42 pm

mine might too, but the computer turns the ign off. both of my widebodys do this at 5000rpm. the ign cuts and you get a disturbing puff of black fuel smoke from the exhaust. they both do it very consistently, one had 3 different turbos on it and it was in the same spot every time. I haven’t checked the ign power from the ecu, actually, I haven’t checked anything. it is so consistent with both cars I would find it hard to believe its anything other than a rev cut. bet it has something to with both having homosexually inclined auto trannies.

i hate those things so much. :x

TD05 · Post by **TD05** » Fri Jun 16, 2006 5:06 pm

Starion VR4 wrote:yea the cam is a limiting factor, engine will REV to 8000RPM safely but not produce usable power, the STD Cam is good to about 5500RPM, depending on what inlet manifold U have. :beer

8k? that's higher than the SR20DET are you sure??

NXTIME · Post by **NXTIME** » Sat Jun 17, 2006 1:49 pm

Richie, put the manual box in there and fit a TC/TD06. The only thing those auto's are good for is boat anchors.

Or tricked up and used in drag racing applications ;)

crshbndct · Post by **crshbndct** » Sat Jun 17, 2006 6:19 pm

i am doing a dyno of before and after with the manual gearbox.

i cant wait till its in.

TD05 · Post by **TD05** » Sat Jun 17, 2006 6:24 pm

my jb had a tc06 and it didn't matter if it rev past 5000 it didnt pull any harder anyway, so I rarely went past 4500

OLD FART · Post by **OLD FART** » Sun Jun 18, 2006 6:35 am

4500 ?? thats just a little bit above a fast idle :D :D :D

NXTIME · Post by **NXTIME** » Sun Jun 18, 2006 2:45 pm

Power usually drops off using a standard cam at around 4500.

TD05 · Post by **TD05** » Sun Jun 18, 2006 3:36 pm

thanks NXTIME, it always felt flat after 4500

Austarion

Safe Rev Limit

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