UPDATE: Did I hit 11's tonight??????

[KEVINS]

Nope
I made 5 runs tonight and the best was 12.21 @108.8 mph 60' 1.61.
1/8 mile time: 7.70 @ 87.1 mph.

To refresh your memory I Changed my Maxeffort chip timing from 28* to 32*, Running C16, Removed my airfilter and put on a 3" pipe to hold the MAT sensor, tried locking the converter and I just installed a Power Plate.

NOTHING HELPED! I could not get ANY friggen MPH no matter what I did.

#1: 12.49 @ 107 60' 1.69 (No KR)
#2: 12.33 @ 106 60' 1.64 (No KR)
#3: 12.21 @ 108.7 60' 1.61 (2-3* KR in areas of the run)

RA107 chip was installed for the last runs but it is NOT programmed for a stock turbo. I was hoping to find some MPH and I wanted to see what timing the chip was programmed with.

#4: 12.26 @ 108.0 60' 1.65
#5: 12.30 @107.2 60' 1.66 (hot lapped from last run)

I don't know why this car won't mph. It did not seem to like the new timing @ 32* so I will prolly have Steve reprogram it back to 28*. I also tried locking the converter at different times in the runs but nothing made much difference. I was REALLY hoping to run 112mph tonight..

The good news is that it made the 1.2 hr drive up and back w/o a hitch so that is ALWAYS a good thing!

ks

 

[TURBOV6]

How much boost? Valve springs needs replacement?

 

[tim87tr]

I ran tonight also

We've got the same goals for the stock setup. I've just been on your launching a drag car website and I'm going to have to do something along those lines.

One thing I could mention is I ran your exact eighth mph last weekend through the exhaust, and gained 0.8 mph uncapping the dump on the last two runs, no other changes. Although I have just went with a 3" homemade dp and test pipe/dump, along with a ported exhaust elbow.

The other thing is of course the weight. There was a recent thread: TR on a Diet
I removed about 75 lbs from last year (sway bar, jack, and rear seat sound mat), and realized a noticeable gain from that BTW, I am running a Thrasher 100, and see my website for other mods.

 

[John Larkin]

It's odd that from reading your page you are only running 20lbs of boost. Is that that what he recommends with so much timing (it does seem prudent)? I just sent my chip back to him and he recommends 23° for me + lots of boost.

 

[KEVINS]

I don't have ported heads. They have never been off the car.
Boost was set at 22 but it did very from run to run. I couldn't see the gage at all times since it was dark. I do know it varies more than I like (i'll try and fix that) but I tried to keep an eye on it through the traps and it was 22 most of the times I looked going through the traps. I was simply looking for mph tonight and never found it.

Vspring are good (4000 miles)
My runs are with the dump open.

I am not going to gut the car to save weight. I remove excess jack and tools but that's it. It has the standard GN options nothing "extra" so I guess the weight is around 3600..

I don't have EGT's. I was leaning the ME16pos out the first 3 runs and that's when I got a few degrees of KR on the 3 run in 3rd gear only for a few frames. I was hoping the O2 sensor was still good enough to get me some readings but it wasn't. I don't know if it was rich or not but I have my doubts simply b/c I got KR with C16 @ 22psi of boost. I only had 1 more thumbwheel setting I could go to for the race timing and I didn't feel that I could pick up 4 mph by doing that so I used the RA107 chip for giggles which has 25* of timing - stil went 108mph???
No brake drag. We checked b4 we put the slicks on and after we took them off.

This car has never had any MPH (109 w/o locking the 'verter) and it's frustrating. Everything I did tuning wise was to try and gain MPH and nothing worked. It went slower and it may be the chip timing tonight. It doesn't have the bottom end power that it use to which I think is the chip timing also. I was launching at 17psi in order to get the 60's that I was getting which is the most I EVER had to launch with, usually 14-15 would get me low 1.6's..

I am seeing the 108mph very consistantly (too consistantly?) no matter what I do so there must be a restriction somewhere! It could be the stock head castings that are restricting it and that is what I am almost leaning towards.

ks

 

[KEVINS]

Bone stock IC but I bellmouthed it a little and I'd like to keep it that way.

 

[tim87tr]

I bet the Dut neck and ported exhaust elbow might help some. For weight, do you have alum bumper inserts, removed the sway bar and sound mat behind and below the rear seats? My sway bar removal didn't hardly change my 60's at all, but that's 26 lb off the front. I have noticed a few hundreds ET difference (same mph so I know) even with minor weight reduction.

 

[KEVINS]

I got rid of the stock dp and I'm running a 3" dp..
The first year I went racing I removed the sway bar on one run and it didn't make any difference. It actually slowed down just a bit. So now I just leave it on and connected.
I leave all street gear on the car and intact, sway bars, front wheels, sound deadning material, etc. I don't think removing these "little" things is going to cost me 4 mph so I leave them on. Plus I don't like stripping the car down "just" to get an ET then having to put it all back on. This is raced as close to street trim as possible and the car is beautiful and original so I don't like to remove the stock stuff.

I may find a IC with a Dutt neck next year for testing only but I still don't like the idea of "needing" the neck to get there. Others have done it with the stock neck so it is "possible".

ks

 

[tim87tr]

Originally posted by KEVINS
I leave all street gear on the car and intact, sway bars, front wheels, sound deadning material, etc. I don't think removing these "little" things is going to cost me 4 mph so I leave them on. ks

Everyones goals are different, but I am tweaking the car within reason to reach my goal. I don't like to hack on my car, and hated doing the fender lip roll on the ps. I just figured with the mostly stock parts, I have a hp limit, and the weight reduction would be my easiest method to get a better ET at that same hp. My car is still about 3400 lb without me in it.

I figure at this ET level with a stock turbo, you have more limited areas of improvement, the Dut neck being one of those tweaks to make it easier.

 

[KEVINS]

I agree about the Dutt neck but I have 2 friends that have run 11's @ 113 and 114 with stock turbo, stock IC BUT home ported heads. Ones a 30K mile Gn the other a 24k mile T.
I know the air flow is prolly hurting me. I also believe that IF I can get things to work in harmony then I can get that 11. After seeing how the car launches I can launch with more boost to get the 60's down a bit more and my ET's have always been very dependant on the 60's.
I can only think of one thing to try at this time and that is to go back to the old chip timing of 28 (or less) when it ran 12.1's @ 109 but lock the converter.

I'll see if Steve Y has any tricks that he has learned. I hope to make it one more time this year..

Thanks guys!
ks

 

[Nocooler]

Kevin - I wish you luck man, 11's is my goal too.

I did rip about 125lbs out of my car this week - broke my heart doing it! A/C - Sound deading behind the seat, rear seat belts, chopped the front bumper support. These are all things I can put back.

I wish my car would 60's like yours - 1.6 is where I'd like to be.

Good Luck
Jeremy

 

[KEVINS]

Get a jumper valve to hold the rear brake pressure. You should be able to launch with more boost then and get those 1.6's or better.

ks

 

[Nocooler]

I don't have a probelm building or holding boost - I just go up in smoke when I let it go! I get my 1.7's on 1psi @ most, if not "0" Vacuum.

Gotta love good old open rears!

Do you have a link for the jumper valve your talking about - it sounds neat, and I'd like to read up on it.

 

[KEVINS]

Geezz, you don't have posi yet?? ..lol..

Sorry no link on the Jvalve but you should be able to do a search for it in the drag racing section.

ks

 

[Nocooler]

It's on the list........

Besides - alot of people told me I'd never make it this far with a pegleg.



I'll do the search on the jvavle.

Jeremy

 

[Reggie West]

Kev the most I ever run for timing in a stock block is 26 and that is if I feel the A/F ratios are dead on.

If you are using the stock cam what you are doing kind of makes sense. There seems to be a wall there at 120 mph or so.

 

[TURBOV6]

I don't see you having a scantool. I would check you MAF and IAC reading at WOT. You restriction might be there.

 

[KEVINS]

I use DS to record the runs and the Maxeffort chip locks the MAF at 255.
I have the IAC set at 20 but I don't know what this had to do with racing. I thought this was for Idle.

The weirdest thing is that when I used the RA107 chip on the last 2 runs, it is programmed for use with a TE44 @28psi of boost and it has 25* of timing. My O2's are 0 to 90 (not a typo) and I just left my fuel psi where it was for the ME chip and it STILL went 12.2 @ 108..

ks

 

[KEVINS]

Hey Guy's, what RPM do you think your engine is done by?

Mine is done at 5000rpm. I found this out b/c on my last run I manually shifted the 2/3 shift hoping to raise the shift point above the auto function at 5000rpm and I shifted when I felt it nose over a bit. When I reviewed the DS file the shift just happened to occure at 5000rpm anyway.
I am also crossing the finish line at 5000rpm which may explain the lack of mph since the engine is all done by 5k.

any ideas besides taller tires at this point?

 

[TURBOV6]

Originally posted by KEVINS
I have the IAC set at 20 but I don't know what this had to do with racing. I thought this was for Idle.

I don't what it is uses for racing but was told to check make shure you see 255 at WOT, I guess it show maximun air flow into the TB.

At the finish line my rpm's tops off at 5200-5300. A stock set up turbo buick or slightly modified you should easily see traps over 110. Maybe you should do a compression check.