FINALLY took the TGP to the track

[TGP Nick]

What the heck is a "pegleg burnout"?

[cobracmdr]

pegleg burnout is when one wheel spins alone or faster than the other wheel.  This is due to the different lengths of the cv joints on the auto 4t60.  The 282 and 284 have a midshaft so the cv's are equal lengths, this does not eliminate pegleg burnouts but it does minimize them as long as you take off with both wheels straight.  The unequal length cv's also cause torque steer.  Hope that helps. 

My buddy bought something for his 4t60-E which helped with the peglegs.  I cannot remember where he got it, but it was called phamton grip.  It works like an lsd diff but without the clutches.

Ken

[GOT2B GM]

Thanks for the great advice guys. Too bad I'll have to wait till next spring to try out your tips and tricks.

[GOT2B GM]

Pics:

On the way there:

































VIDEOS!!!!

My best run: 14.8 @ 91







One of Jamies (GTPmunky from w-body) runs










A turbo L67 GTP that was there running 11.8xxx



running slicks on xlaces







Jamie putting his subs back in after racing





Fellow GM nuts that were there with an S10 and an L36 Regal




the gp's under a tree

[mfewtrail]

10-11psi, I thought Kenny's chip would have you pushing slightly more than that?. Your times seem VERY much like a topgun chipped car to me. Don't get me wrong, your times are good, but I think your car should run a LOT faster and be trapping a great deal higher than it did.

My car ran 14.705@91.94mph w/ a 2.148 60ft time the first time I ever ran it(topgun 160 chip, slightly modded exhaust, and the intake pictured in the link below that had the filter placed over the exhaust manifold area). My transaxle was shifting at an indicated 5500rpms at the time of those runs, I know because I recorded a speedometer video around that same time. The tach in my car is high by about 250rpms last time I checked.

http://i2.photobucket.com/albums/y33/mfewtrail/1990%20TGP/TGPenginebay.jpg

Also, here's my timeslip for comparisons sake. My car also felt great the first 1/8th and then felt slow past that. http://home.alltel.net/mfewtrail/tgpslips/mfewtrail.jpg



EDIT: 1/4 mile page has been updated with your time Matt. I borrowed one of those nice pictures of your car to use on the page, hope ya' don't mind. ;) I put a tag on it with your screenname so everyone will know who's car it is . If you want me to take it down, let me know and I'll remove it ASAP. http://home.alltel.net/mfewtrail/

[cobracmdr]

what are 5 speed guys running with kenny's chip?  How much power are they typically making?

Ken

[GOT2B GM]

10-11psi, I thought Kenny's chip would have you pushing slightly more than that?. Your times seem VERY much like a topgun chipped car to me. Don't get me wrong, your times are good, but I think your car should run a LOT faster and be trapping a great deal higher than it did.

My car ran 14.705@91.94mph w/ a 2.148 60ft time the first time I ever ran it(topgun 160 chip, slightly modded exhaust, and the intake pictured in the link below that had the filter placed over the exhaust manifold area). My transaxle was shifting at an indicated 5500rpms at the time of those runs, I know because I recorded a speedometer video around that same time. The tach in my car is high by about 250rpms last time I checked.

http://i2.photobucket.com/albums/y33/mfewtrail/1990%20TGP/TGPenginebay.jpg

Also, here's my timeslip for comparisons sake. My car also felt great the first 1/8th and then felt slow past that. http://home.alltel.net/mfewtrail/tgpslips/mfewtrail.jpg



EDIT: 1/4 mile page has been updated with your time Matt. I borrowed one of those nice pictures of your car to use on the page, hope ya' don't mind. ;) I put a tag on it with your screenname so everyone will know who's car it is . If you want me to take it down, let me know and I'll remove it ASAP. http://home.alltel.net/mfewtrail/

Website looks great Matt.

No worries about the picture.

Yeah, I was hoping to run closer to 14.5 @ 95 but I guess I'll have to try a couple different approaches on launching, and/or mod her a little more to get the times down to where I want them.

I too, thought that it should have ran quicker but it is what it is.

From what Kenny told me, my understanding is that the Hot tune doesnt push more boost than the top gun. But what it does do, is use more aggressive ignition timing, leans out the fuel mixture a bit to make more power, while still providing enough fuel for combustion chamber cooling, and provides faster boost ramping.

Kenny, please correct me if I'm wrong in that statement.

I was wondering,
Did you notice any gains from going mufflerless?

[GutlessSupreme]

cobracmdr - the 282 does not have equal length halfshafts. Compared to the 4T60, the driver's side is the same and the passenger side is only ~1" shorter.

those are also called one-wheel-wonders  :icon_cool:

Matt - what the hell is that carpet thing on your dashboard? :Yikes_anim: the side profile highway pics look sweet btw

[GOT2B GM]

It's a used dashmat that I bought off of ebay last year for $4.

It keeps the dash from getting sunbaked when it sits outside.

[mfewtrail]

I was wondering,
Did you notice any gains from going mufflerless?

I don't really know to be honest. The car had a high flow cat and a resonator on it when I bought it, so I never got to drive it with mufflers. I doubt removing the mufflers really makes any difference as several people have put down plenty of power through the stock exhaust system w/ the cat removed.

[TGPilot]

Yes Matt you are right.

These T25s are not efficient above 11 or 12 psi_g and in effect over-run the intercooler and you become a firebreathing turbo. Hot air in means piss poor performance.

My question to you Matt...do you feel a difference in the HOT tune chip compared to the TG chip?

As we discussed in previous posts you need to get your driving technique down and you will be in the 13's pretty easily. Hell if I can run a 14.2 at 5800' above sea-level you guys at sea-level should be mid-13 cars pretty easily.

As far as a 5-speed time. I do not think anyone has taken one of my chips to the track with a good clutch. I ran a 15.1 in the 5-speed at 5800' and the clutch was useless from the top of 2nd through the top of 3rd.

[GOT2B GM]

Down low, off the line, there is a huge difference between the TG and the Hot tune. Up in the higher Rpms 4k+ there isnt much of a noticable difference.

It seems to me like the Hot tune doesn't push as much boost, but boosts harder, due to the cooler air charge. Like you said above.


It would be easier with a 5spd that you could shift where you want and keep it in the torque range. I'll have to play with some throttle feathering come next year.

[TurboGTU]

Thats good for first time out.

I would think a worn tire would perform better due to the more contact patch. Under inflating them would hurt them though since they would "CUP" from the contact patch.  Sounds like alot of wind that day. Try avoiding the watter box on those tires. No burnouts either. Just do a slight burn out to Clean the tire.

[GOT2B GM]

Thanks. I had avoided the waterbox for all of the runs. No burnout either though. It was fairly windy that day. I ran half the runs at 35 psi in the tires and the other half at 25 psi with no noticable difference.

[kuntzie]

i ran around there when i had the car matt. IIRC 14.8 @ 92 or 93 MPH, i have the slip here somewhere