muhahahaha Jud.... better get back to the track 108MPH trap!!!!

[dbtk2]

108 mph traps are very impressive!   :icon_eek:  With some sticky tires thats almost a 12 second pass assuming the driveline would hold up.  Get that 60' down to a 1.85 and theoretically you would be running around a 13.0 instead of 13.6.  Very impressive and thats what I was hoping to eventually see out of that beautiful car when I saw it 1.5 years ago, that car is very nice and congrats on everything you've done so far! 

If you don't mind me asking, what are you running for boost levels now, and thats with 29lb. fuel injectors and stock fuel pressure?  Are you still running the stock intercooler or do you have a front mount?  Also, around what RPM are you seeing full boost?


Axles seem to start to be a problem at around this power level.  I was having axle issues when I first did my topend swap right before my tranny issues began when I was running a manual boost controller (for the very short time that I did).  Since my tranny issues I haven't really had any axle issues yet, but the car isn't making as much power (I'm running less boost and no mbc so I have a boost ramp now) and my tranny is slipping.  We need to find a better solution for axles because with the torque some of us are making, and you especially, the stock ones are not a solution. 

[kuntzie]

TGPilot,

ya the axles sit in fine, but as ive said on w-body, the axles were old/ ised, i got a new one in there now and it seems to be fine (yet no track time yet), no more burnouts for me ill see if that helps as well

Jud,
ya i know its ugly lol, green goop, didnt make it to pleasent to work on as it doesnt clean up easily.

i dont understand what you mean y rear struts blocked, i have the birchmount in the rear which keeps the rear of the car really stiff, so no ass sag or whatever through shifts

you got a # for hayes? that will be my last resort calling them, as i also put neww tires on that might help me out too.


dbtk2,

thanks man, i realize the 108 is a good trap, and might even hit 110 on a good run, i think the driveline, minus the axles is fine, i cant wait to hit a 13.3 even , nevermind a 12.

as for boost, 12 psi -15 psi 12 when i hit the 13.6. yes im running the 29# injectors with stock fuel pressure, unless skalor put a walbro 255 in there and did some other stuff im unaware of.


yes i agree torque is on of my big issues, ill get it dynoed soon enough to get the exact #s but its gotta be over 400 at the wheels.

[TurboGTU]

Congrats! Thiese guys are right..with that trap speed..your looking at a mid-high 12 pass to a flat 13 sec pass with your weight.

Cain't wait till one of you goes into the low 12s.

Wow..im surprised...first axles give instead of pistons.

[dbtk2]

Congrats! Thiese guys are right..with that trap speed..your looking at a mid-high 12 pass to a flat 13 sec pass with your weight.

Cain't wait till one of you goes into the low 12s.

Wow..im surprised...first axles give instead of pistons.

I'm not suprised the axles are going first.  The bottom end of these things are pretty strong, and the tranny part of the drivetrain is not, I would expect axles to go first.  In 90*+ outside temps, I was running 14psi boost on my STE, with 820 02's (way leaner than I'd like to see it), from a 60ish roll all the way up to 125 repeatedly to try to get some tuning done.  The bottom end just screamed give me more.  I honestly see no reason why 11's would be an issue with the stock bottom end.

[kuntzie]

Congrats! Thiese guys are right..with that trap speed..your looking at a mid-high 12 pass to a flat 13 sec pass with your weight.

Cain't wait till one of you goes into the low 12s.

Wow..im surprised...first axles give instead of pistons.

I'm not suprised the axles are going first.  The bottom end of these things are pretty strong, and the tranny part of the drivetrain is not, I would expect axles to go first.  In 90*+ outside temps, I was running 14psi boost on my STE, with 820 02's (way leaner than I'd like to see it), from a 60ish roll all the way up to 125 repeatedly to try to get some tuning done.  The bottom end just screamed give me more.  I honestly see no reason why 11's would be an issue with the stock bottom end.

agreed, i think the motor it self can take everything fine, as long as the car is properly tuned and has sufficient gas supply.    DARKNES on w-body was proof that a tgp can hit 260k?? miles  no problem on original engine and tranny as well as turbo and x-over.    matienence is key,

i check my fluids every couple of days, only takes a second, mnd as well.... and do oil changes (oil & filter) about every 1800-2500 miles, mainly becasue i beat on it on the track and such.

i know i am capable of 12s safely on the basicly stock motor. once i get the FMIC in i should be good for it.


also for comaparison... all on street tires

stock turbo - 14.3 @ 101 (best of 30+ passes) - gutted cat, 1.6 rockers 11 psi

gt2871 @ 5 psi - 14.030 @ 93 - bad clutch... maybe 5 passes, exhaust leak, magnaflow cat, stock mufflers

gt-2871 @ 12 psi - 13.6006@108 - stage 3 clutch, magnaflow and cherry bomb, no stock mufflers... only 1 succcessful pass, 1st pas usually the worst run.... hoping to get some in this weekend

[TGPilot]

Ok Kuntzie,

I had a friend of mine who has been racing for more years than a many on here have been alive take a look at your pictures. He said the same thing I did before I said anything. Your Yokes are slidding off the output shaft and twisting in half! If you look at your pictures of the yoke...you will see a shiney ring in the splines. That is know as a torque witness mark. Your yoke is twisting sideways at the point of fracture on the output shaft and with your wheel hop you are twisting the yoke in half on the output shaft.

Either your ring clip on the output shaft is worn out or missing. Could also be the clip seat in the yoke is worn out also allowing it to yoke to slide off the output shaft.

But when he said the same thing as my initial thought...I knew it... ;)

[kuntzie]

kenny,

when i replaced the alxe the last time, i put a new clip on the tranny, as well as a new axle seal, along with the BRAND NEW axle.

well snappty snap, it broke today.

the end was still completely in the tranny and had a hard time comming out even though a piece was cracked off like usual.

ill get pics of this one up soon.  i took it out pf the car right on the outside of the track so the car maybe was moved 15 feet this time, compared to the usual ~1/2 mile

No burnout- no dumping the clutch- no harsh start off the line....... just snapped..... got 1 run in again, 13.6192 @ 109.66 < higher trap than before with a 2.67 60'<< .52 seconds lnonger then my 13.6006 run, so theroicly with the 2.15 60' on my run today i would have hit a a 13.0 something..... like i said i was babying it

[TGPilot]

How much play is in the output shaft? I severely doubt the yokes are breaking from torque. The tranny will let go first. I have seen our yokes and shortened axles used on a 600+ HP Kharma Ghia. Something else is wrong there bud.  :thinking: I mean it is a great ego booster to think you are putting down that much torque to be breaking things like that...but I doubt it severely. ;)

[TurboGTU]

You running C-16 in that thing? Its getting better.
I just hate it when a guy is doing good then things start breaking. I hope you don't throw the towel in.

Check the trans, I'm not fimiliar with the Getrags, but if there's a axle stablelizer (behind the seal) or bearing where the outside edge of the axle rides on, it might already seen its better days. If it's removable...try pulling it out and take it to a trans parts store..they might be able to find something that fits with a little pursuation. On my SHO 5 spd...the axle support was ON the differential. If yours is like this..check the differential by pulling the adapter piece off(it comes off?) and check for roundout. It would let the axle move pendicular to the pinoin pin. My cure for this, belive it or not is welding and filing the diff. You could also try taking it apart and having the diff holes honed and install jurnal bearings. No replacement parts for this tranny..only one off stuff.

Check A-arm bushings, spindle, strut, rack-n-pinion, ex-girfriend, underware.... :willy_nilly: :smilielol:

[kuntzie]

will do TurboGTU..... but im gunna try this first...


well i talked to an axle company thats semi close to me, sent them the pictures and told him what was going on, he saw the pics and was like ya those are pretty broken.

I told him that the axles are breaking but still stay in the tranny, and i got to hit them out ect, so i know there not just slipping of the output shaft. (2 of the times it stayed in the tranny)

oddly enough at the track uesterday, he was there and remembered my car. didnt know it was an axle i broke or he would have came and talked to me.

we talked to a bit and he said, if the passenger one is holding up fine, then he will just make me a driver side one, i actually got the # for this guy from a buddy on another car forum, whos got an 12.0 second grand prix, had problems with axles, about one every 4 or 5 passes, got some of these an never had a problem since, (with Slicks too)

one axle, 300 bucks (canadian)  so basicly 200 for the upgrade,  said It will not be broken , and carries a life time warranty, i have it for next wekend to test it out.

[TGPilot]

I will keep him in mind for future use if I need it.

On the other hand...I have $20 USD that says with the new axles you will rip out the output shaft of the tranny or a component directly associated with the output shaft within 5 HARD runs! ;)

[kuntzie]

I will keep him in mind for future use if I need it.

On the other hand...I have $20 USD that says with the new axles you will rip out the output shaft of the tranny or a component directly associated with the output shaft within 5 HARD runs! ;)

i wouldnt doubt it

[futuretgp'er]

thats ok if you have the money though...your chasing out the week points!  if you have the bankroll you'll save some guys who go the 5speed route alot of money!  if you choose to share the secrets/week spots this tranny has.....


on a side note: anyone know why we get strories of stock (nearly at least) TGP's ripping up  getrag 282's   but guys in 400ft/lb tourqe fieros run em and they survive??

[Invasion1]

Choice of junkyard trannys.....IMO

most people that wanna do it right will ether have the Getrag rebuilt and KEEP fluid levels in it and it will survive fine.

cheap out or take it for granted your screwed.

Kuntzie has a 284 the "more HD" version of the Getrag's so says the "Pro's" here and there

i have no problem with my 282 that was rebuilt and im pretty hard on it at times.

[TGPilot]

The heaviest stock Fiero weighs 2700 lbs. Our TGP's are upwards to 3600 lbs. You force the tranny to move the weight...it will feel it alot more than if it is in a light car. ;)