14.7 @ 92mph, Rev Limiter or Tranny?

[89Turbo]

ok so i made about 7 passes tonight at PIR and the best i got was a 14.7, the thing is coming out of first(auto in D) it goes all the way til redline and just bounces off of it and will not shift until i let off, this is killing my times, when i manually do it, it is a bit better, but still does it some, is this my rev limiter or is it my new tranny. I just had the tranny rebuilt and it has shift kit in it, and im starting to think they made 1st gear go to long?????

[suprra_girl]

that's what mine does too... for me it's the tranny starting to die... i certainly hope that's not your case since you just got it built

[89Turbo]

bahhhhhhhhhhhhhhhh

[88supraFAST1]

is it your tq converter or maybe the shift kit is to agressive.

[Doward]

Double check your fluid level, engine/tranny totally warmed up, idling in P.

[cadman]

ok so i made about 7 passes tonight at PIR and the best i got was a 14.7, the thing is coming out of first(auto in D) it goes all the way til redline and just bounces off of it and will not shift until i let off, this is killing my times, when i manually do it, it is a bit better, but still does it some, is this my rev limiter or is it my new tranny. I just had the tranny rebuilt and it has shift kit in it, and im starting to think they made 1st gear go to long?????

Hey, I saw you down there, White Auto with no rear interior right? Thanks for coming up and saying hey. It was nice to see other Supras out there.

[89Turbo]

Double check your fluid level, engine/tranny totally warmed up, idling in P.

will do

[89Turbo]

ok so i checked it today all warmed up, and idling, i think i may have found the problem, it is overfilled, its a good inch past the HOT mark everytime i check it. Could this be causing my shifting problem? best bet is to probably drain it, change the filter, and refill with the correct amount.

[xarewhyayen]

ok so i checked it today all warmed up, and idling, i think i may have found the problem, it is overfilled, its a good inch past the HOT mark everytime i check it. Could this be causing my shifting problem? best bet is to probably drain it, change the filter, and refill with the correct amount.

Probably a good idea, but im not so sure its nessecary to change the filter right away, though it wouldnt really hurt. just take some out and check the level.. but if you do drain it fully, make sure when you refill it, you run it through the gears a few times before you check the level... and that it makes it up to operating temp.

[dbsupra90]

when you check the tranny level:

drive it for about 15-20 min. then while it is still running take it out of park and shift to R. wait about 3 sec. shift to N. wait about 3 sec. shift to D, etc then put it back in park. then check the level. while you are checking it make sure it doesnt look or smell burnt.

after that, be sure your line pressure cable is adjusted correctly. hold the throttle wide open (w/ the car off obv) and make sure the crimp on the cable comes to where the red arrow is. if not, loosen the lock nuts and adjust it til it does.

http://www.mk3.us/dave/tech/wotmorangecover0inm.jpg

lastly, make sure you have a real tranny cooler on there. drag racing will really make it boil if not.

good luck

[89Turbo]

when you check the tranny level:

drive it for about 15-20 min. then while it is still running take it out of park and shift to R. wait about 3 sec. shift to N. wait about 3 sec. shift to D, etc then put it back in park. then check the level. while you are checking it make sure it doesnt look or smell burnt.

after that, be sure your line pressure cable is adjusted correctly. hold the throttle wide open (w/ the car off obv) and make sure the crimp on the cable comes to where the red arrow is. if not, loosen the lock nuts and adjust it til it does.

http://www.mk3.us/dave/tech/wotmorangecover0inm.jpg

lastly, make sure you have a real tranny cooler on there. drag racing will really make it boil if not.

good luck

thats some in depth shit man thanks. the little metal crimp thing you are referring to comes out about a half an inch past the end of the boot, so that means i need to adjust it right?

[dbsupra90]

the further it is out the higher the line pressure. i had thought maybe you didnt have yours adjusted out far enough, but doesnt sound like thats the case. it shouldnt cause an issue being a little higher, but you could back it down a bit and see if that helps anything.

[89Turbo]

somebody who was at the track today said it sounded to him that i was running lean also, he said he heard a popping noise in every gear from 5k-6k, somehow meaning it was lean. I got to thinking also, maybe it only did that in first gear because i was running at the track with very little fuel and the pump could not get enough to the injectors at 6500rpm????

BTW- others say they didnt hear it or it was just my rev limiter, but none of these people have Supras......

[91T breezen']

If you have a vfpr, you should be okay with fuel, if you are not trying to boost too much. You probably are hitting the rev limiter, and you could have a spark issue as well. Cheap plug that works well, but should be changed at every oil change interval is the Autolite copper, gapped to .029 (or thereabouts) Those times are just about right though. My son ran a 14.4 @ 99mph with just a Megan dp and 3" catless Blitz, and mbc @ 12psi.

[89Turbo]

If you have a vfpr, you should be okay with fuel, if you are not trying to boost too much. You probably are hitting the rev limiter, and you could have a spark issue as well. Cheap plug that works well, but should be changed at every oil change interval is the Autolite copper, gapped to .029 (or thereabouts) Those times are just about right though. My son ran a 14.4 @ 99mph with just a Megan dp and 3" catless Blitz, and mbc @ 12psi.


thanks for the info Tom and the TorqueFreaks certificate, anybody else?

BTW what am i supposed to do about this rev limiter problem, its obviously hindering my performance because i have to let off at the end of first.

[kwnate]

You're welcome for the tourqefreaks cert.

Hope you figure out the problem, and no more drifting.

[Jspec7m88]

Hey, that picture of the throttle adjuster nuts thingie, that's my thumb. :-p

*Note to self* Dave saves my pictures, so don't send any more naughty pics.

:runaway: LOL J/K.

I know you said that you had a shift kit...and I'm not sure if you still have the "NORMAL/POWER" button, but if you do, when you are taking off and going from 1st to 2nd, make sure it's on NORMAL.

When I used to always leave it in POWER mode...When launching, it would go all the way to like 6275rpms and would occaisionally bounce...which was definately an issue to me.
Putting it on NORMAL allows its to go just a few hundred RPM's away from Redline and shift smoothly AND quickly. :)

It's become 2nd nature now that once I've got into 2nd gear, I put it back into POWER mode because I never bounce in 2,3 or 4th and it goes all the way through the powerband. Not sure if you even have this anymore, but if you do, try that! :)

Jeff

[89Turbo]

You're welcome for the tourqefreaks cert.

Hope you figure out the problem, and no more drifting.


lol thats right you gave it to him that gave it to me, thanks Nate, yeah im done drifting, learned that lesson

i've realized there are some very good people in the Supra community it was friggin sweet to finally meet up with some fellow Supra owners at that meet even if my car is slow and ugly i still love it. Cant wait to compete in the Supraman Challenge next year wherever the event may be.

[89Turbo]

Hey, that picture of the throttle adjuster nuts thingie, that's my thumb. :-p

*Note to self* Dave saves my pictures, so don't send any more naughty pics.

:runaway: LOL J/K.

I know you said that you had a shift kit...and I'm not sure if you still have the "NORMAL/POWER" button, but if you do, when you are taking off and going from 1st to 2nd, make sure it's on NORMAL.

When I used to always leave it in POWER mode...When launching, it would go all the way to like 6275rpms and would occaisionally bounce...which was definately an issue to me.
Putting it on NORMAL allows its to go just a few hundred RPM's away from Redline and shift smoothly AND quickly. :)

It's become 2nd nature now that once I've got into 2nd gear, I put it back into POWER mode because I never bounce in 2,3 or 4th and it goes all the way through the powerband. Not sure if you even have this anymore, but if you do, try that! :)

Jeff

SWEET, im going again this weekend i'll give that a shot along with everyone elses tips.

[Jspec7m88]

89Turbo:
So you DID have it on POWER? If you did, I will almost bet my car that it will work when you put it on NORMAL! :) Just find an open stretch of road long enough for you to go through 1st gear and the start of 2nd, just make sure you switch it back over to POWER once you've gotten into 2nd gear so that your other RPMs will go all the way through the RPMs. :)

Jeff

[89Turbo]

89Turbo:
So you DID have it on POWER? If you did, I will almost bet my car that it will work when you put it on NORMAL! :) Just find an open stretch of road long enough for you to go through 1st gear and the start of 2nd, just make sure you switch it back over to POWER once you've gotten into 2nd gear so that your other RPMs will go all the way through the RPMs. :)

Jeff


will do, but i have to more careful than most i have a speedracing ticket from a few weeks ago. may just have to find out at the track.

[pimptrizkit]

ouch a speed racin ticket eh?

you going down friday night or sat night?

i might take the drive down to go watch, , would love to race you but dam car is getting hot.. and it wouldn't be worht paing 22 bucks for a one run bhg..

ive always seemed to get alot of attention down at pir when i bring my car..

at least with toyota friendly people! lol

[Jspec7m88]

^^^

"But Occifer, My pedal got stuck to the floor!" ;);)

[89Turbo]

ouch a speed racin ticket eh?

you going down friday night or sat night?

i might take the drive down to go watch, , would love to race you but dam car is getting hot.. and it wouldn't be worht paing 22 bucks for a one run bhg..

ive always seemed to get alot of attention down at pir when i bring my car..

at least with toyota friendly people! lol


was thinkin Sat. but its gunn be in the 90's which obviously is bad for racing, so maybe Friday night now....

[americanjebus]

was thinkin Sat. but its gunn be in the 90's which obviously is bad for racing, so maybe Friday night now....

Did you readjust you line pressure?

how well did that work? I dont remember if you have one or not but seriously dude get a decent sized oil cooler for your tranny. It generates an incredible amount of heat and i need to relocate mine because i didnt realize how hot the oil cooler could get, it bassicaly blows hot air into my IC now.

drop me a pm next time you head up to PIR i'd like to meet up and do some runs myself now that i put an end to my fuel cut issue.

you still on 8psi?

[Jspec7m88]

I mounted my Transmission Cooler in place of where my Driverside Foglight would normally sit. Putting it in place has DEFINATELY saved my ass.
If any of you Auto guys have not gotten a cooler yet, DO IT.
You can find them for pretty cheap and it's a simple mod that will help out the life of your transmission. After all, statistics say that 90% of transmission failures are a result of overheating.

...DOODA DAMNED THANG! ;)

[89Turbo]

I mounted my Transmission Cooler in place of where my Driverside Foglight would normally sit. Putting it in place has DEFINATELY saved my ass.
If any of you Auto guys have not gotten a cooler yet, DO IT.
You can find them for pretty cheap and it's a simple mod that will help out the life of your transmission. After all, statistics say that 90% of transmission failures are a result of overheating.

...DOODA DAMNED THANG! ;)

puttin mine in a couple hours before i go on Friday....

[pimptrizkit]

i work friday night , but i'll jam out there and com watch and hang out

if you go to les schwab you can get 2 doallors off entry fee.... coupons of course!

[89Turbo]

i work friday night , but i'll jam out there and com watch and hang out

if you go to les schwab you can get 2 doallors off entry fee.... coupons of course!

sweeeet didnt know that, im so broke im takin back change and pop cans......

[89Turbo]

well, went to the track, its part rev limiter and part tranny, the shift kit that was installed in my transmission is to agressive in first gear, is this an easy fix for them or no?

ran a 14.6 @ 93mph

[Jspec7m88]

Well...Looks like you got .1 second quicker and 1mph faster.

THAT'S IMPROVEMENT! :D

[89Turbo]

Well...Looks like you got .1 second quicker and 1mph faster.

THAT'S IMPROVEMENT! :D


lol, i babied it in first until it shifted then got on it, mostly everyone is down talkin me and everything but im still havin fun.(and a little bit of anger that it will be down for repair)

[pimptrizkit]

so did trign what i siad help any out there?

it should be an easy fix for them, and realisticly they should be able to fix it with the tranny in the car, drop the tranny pan, and adjust the first gear accuminlator or remove some shimms, or what every they did..

but do what ever it taks not to pay any more money! it was there mistake, make them eat it. im sure it wouldn't be a problem if you redlined at 8k.. but at 6.5k it's a problem..

any ways i would have loved to race yeah, or atleast let yeah ride in my car, but since ive been losing coolent, it's not worth pushing her.

hope this problem gets fixed, i see a 14 second flat run in your near future!