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5spd

I have a 1987 supra with a 7m-gte with intake, full 3" exhaust, and mbc@ 9 psi. I went to the track about 8 months ago and i was not happy with my times. My best was a 15.1. So last week i went back and got a 14.8. 60'-2.169 330-6.181 1/8-9.543 mph-73.50 1000-12.425 1/4-14.849 mph-93.39...

I am starting to think its the gaskets. The nuts on the manifold where it connects to the head have come loose multiple times

Would the car be running bad if it was the turbo? I noticed these holes in the manifold the other day when i was looking over the car. Could this be the problem?

Their is no way to tell if the gasket is bad without taking the turbo off right? I guess i might have to take the turbo off :dunno:

thanks for the help. The bolts werent too loose. I turned the wrench less than 1 full 360 degree turn on each bolt. You think the gasket would be bad?

yes i recirculated the bpv. its a bosch bpv. I just put the stock one back on and that wasnt the problem. Any other ideas?

Maybe i should put the stock bpv back on and try that

I just found this video on youtube and my turbo sounds just like this one. http://www.youtube.com/watch?v=W5rUiBQFCs0&feature=related

I looked over the car today and i think their is a little more shaft play than their was last time i checked. Should their be any shaft play? I also checked the exhaust manifold, ic pipes, and made sure the downpipe was tight on the turbo. Their were a few loose nuts on the exhaust manifold but...

Now it is starting to make the noise at 3500 rpm's. Im just too damn busy to look at it. Hopefully i will have time this weekend.

thenks for the help guys. This weekend i will spend some time searching for the problem. The only obvious place i could think of a leak is the on the accordion hose where it connects to the turbo the clamp is bad and i can't tighten it all the way. The first thing i will do is replace that when...

i have not checked for boost leaks. The turbo had some side to side shaft play last time i checked. I will check again soon. Car also blows some black smoke at WOT

My car is making a weird screetching type of high pitch noise past 4500 rpms. Im not sure what it is. I just got a new mbc and now im at 9 psi and it is making this noise only while boosting. Any ideas? My mods are: intake, full 3" exhaust, joe p mbc at 9 psi, and bosch bpv. Any ideas would be...

Repaint the brakes and exhaust black. The blue looks like shit.

beautiful car. Waiting for video!

nice. Yea i think the issue is my boost controller. Have you heard of any good mbc's?

Thanks. yea it has been doing it for a while now. I didn't plan on dynoing the car that day, i just went to watch but then ended up wanting to know what i would make so i did it. I will try to fix the issue this week

It was my first time and i am somewhat disapointed with my numbers but the car was having boost issues.I have an intake, Turbo back 3" exhaust with highflow cat, and a mbc set at 9 psi. The boost would spike to 9 then drop to 6 at higher rpm's :3d_frown:. Im not sure if its my mbc or a boost...