- Aug 10, 2013
- 15
- 0
- 2
Hey Kiddies, I'm new here and have a question.First the setup. I have a 1989 lx 5.0.. Last year I had an engine rebuild. I had a kb 2.2 on my basically stock motor with 9 lb pulley and it worked pretty well. the changes- I had trickflow 170 heads installed, 90 mm lightning maf,anderson power pipe, .accufab 75 mm tb, fast 42lb, injectors,aeromotive 1000 fuel pump,MSD digi box,Powermaster 140 amp alt. had the kb rebuilt by Jon Bond Perf, with 13lb boost capacitywith bypass. compcams 284HR cam, compcam gold roller rockers,aluminum rad,blackmagic fan,high cap water pump. UPR K-member coil overs.3550 tremec tranny. I had the car on the road for about 200 miles and was getting it ready for the predetor dyno tune when my tuner, not my builder heard a noise from my motor(now after my rebuild my oil pump failed,this motor had about 50 miles on it). The guy who built it pulled the motor and had block checked ,crank turned, and I paid additional $1100.00. My new melling oil pump was free. $25.00. Wowee!. So back to getting motor dynoed. He heard a motor noise. Won't dyno it until cause is found. Got back to my builder, "No waurnty on performance engines"... So my dyno guy did a compression leakdown test on it. All cylinders were around 150 ish except for one which showed 110. On leakdown you could hear air escaping through the crankcase. So he says.. take the sc off of it and put some 21 lb injectors on it that he gave me( had chucked my 19s when the build was done). Leave sc cam 90mm maf, power pipe, tb..etc and run the crap out of it and see if the problem is just a ring that did not seat. Drive it for the summer and in sept, we will put in a 2003 4.6 turbo cobra motor he will sell me and install for $6500.00.. However, I have had trouble with the stock upper and lower intake mating, bolt problems etc, so the other day I ordered a trickflow track heat setup.. So should have it this coming Tues Wed... Long storie. My question is, does any one here think instead of using the 21 lb injectors, could I use my fast 42 lb injectors. This will be with ..again.. (90mm lightning maf..andersonpower pipe..75 mm accufabTB.. trickflow trackheat upper/lower intake..trickflow 170 heads..aeromotive 1000 fuelpump,bbk shory equal lenth header, bassani catbacks.