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anyone ever had this problem?

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boostmaster

Active Member
Joined
Aug 20, 2001
Messages
1,339
anyone ever had this problem? (Long)

just recently got my car back on the road after making some upgrades. My combo is, ta49, 009's, poston headers, atr stainless up/down & crossover, and lunati 200-200 cam, also 8" cone filter. Anyway when i first started running my combo, exactly the same, except w/30lbers and a 93 jl chip also w/ a low budget 2800 stall convertor this thing would rip the tires, but i started to notice over the past few months that the car has been feeling sluggish. Even after tuning the car to 18psi on 93 octane w/1-2 kr and 02's in the 790-820 range this car pulls hard on the top, but is just a dog on the bottom end. My question is could there be a possiblity of a bad convertor hurting my low end performance. like i said this car pulled hard from a dead stop, now it's just a dog. It has a stock long block that I just rebuilt last year, at first i thought that maybe i had excessive blow by and was'nt receiving the full benifit of the turbo, but I ran a compression test today and got these readings. 1-140, 3-135, 5-140/ 2-140, 4-135, 6-140 and this was after I had ran the vehicle for about 45 minutes the manual says I should check it cold. Anyway I know it's a long post but I just had to cover all the info. Oh yeah as you can see I did'nt mention a intercooler, thats right it's a hot air. But don't come with the jokes please. besides 8.10@ 78mph is no slug.:mad:
 
Have you haven't owned or driven the car in the heat of summer before???
If not that will be some of your problem. Hot air cars HATE HOT summers. You may have other problems as well but summers in GA are known to be HOT.

Try adding or running some 100 unleaded race gas and see if that helps. Heck you can run leaded it will just take out your o2 sensor.

Gary
 
not the heat, I have had the car for 2 years and just started noticing this problem about 6mo's ago it's been a gradual decline in performance on the bottom end. And as I said the car is a monster on the top, I'm running 009,s with static fuel pressure of 40# and wot 02's in the 780-820 range with a JL 93street chip.
 
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