TalkRotary

Ok, I just installed an 88 13BT into my 87 TII and it runs ok and idles around 730. My main concern is the emissions block off plate that goes to the acv. What I did was I stuffed the hole of the acv with magnum steel (JB weld) and allowed it to harden before I put on the rtv and block off plate and bolts. I have the infamous stutter at 3800 rpm and I was wondering if the stuffed acv port would be harming my motor? The reason I stuffed jb weld into the manifold where the acv goes is because The blown motor I pulled out was also stuffed this way but died do to a severe coolant leak and not because of the jb weld. I'm wondering if this is restricting air because My boost gauge is only reading 5psi and I have an S5 turbo w/ ported wastegate, 3" turbo back exhaust, 3" custom TID, FD fuel pump, FCD, no emissions. I KNOW for a fact that I should be boosting more than 5psi!!! It feels as though I am boosting about 8psi up to 4k rpms, but I can't get it any hire than that without hesitation. What could be wrong? Is my air passage screwed because of the jb weld? REMEMBER, I didn't put jb weld into the intake manifold, only where the acv goes. Any help?

chris_stampe

no that wont affect it. I would check your ecu grounds...especially the one for the boost sensor (all black wire off the 4 wire clip for the boost sensor) ground that, and search for the 3800 rpm hesitation and see some other probable causes.

TalkRotary

Well, I grounded out the boost sensor and it no longer buckles down, but it does feel like it's leaning out just a bit at 4k rpms. My problem is I am still not boosting over 5psi on my boost gauge (autometer). I can't take the car past 5k rpms right now because the coolant line on the turbo that goes to the motor just below the acv leaks coolant when I try to drive it hard. I used rubber fiber gasket and some thermostat type water resistant rtv to fix the broblem and let it sit, but it still leaks above 5k rpms. I don't know if I'm not seeing more than 5psi of boost because I can't take the car past 5k? or should I be seeing more than 5psi before 5k?

TalkRotary

If I had a vaccuum leak would boost drop off? Would the car not boost correctly with a vaccuum leak? I'm going to be doing the bare block mod or should I just say removing all the unneeded vaccuum lines and stuff. I hope this will get rid of the problem with the boost because I truly believe the car isn't boosting correctly hopefully do to a vaccuum leak.

TalkRotary

bump