242Bleek
k-jet groupie
- Joined
- Jul 18, 2005
- Location
- Brooksville/Tampa, FL
Hi all, im making this post because im at wits end with this car. Its a 1983 245ti, b21ft with kjet. Car has had virtually every single k jet component replaced, new cpr, fuel distributor rebuilt by cis flowtech, bosch gold injectors, new pumps and 255plh in tank, new engine harness, new o2 sensor, new everything base fuel pressure is at 95psi, control pressure is at 40psi hot.
As far as mods, care has a smallish precision t3/t4 with .63 ar turbine and stage 3 wheel internal gate. Ported 90+, b21f intake, all new piping. Basically stock engine with an m47 and clutchnet red clutch.
The car runs great but simply refuses to make more than 7-8 psi in boost. I have literally devoted months trying to figure out why, been through 3 intercoolers thinking there were leaking at the tanks, did smoke test. Pulled turbo to check if wastegate flap was seated and it very much is, all new manifold gaskets so no pre turbo leaks. No sign what so ever of it leaking boost and the boost stays rock solid on 7 psi and doesn't creep or move, its pretty much self regulating even with the wg line pulled. I will add that I have a stock exhaust with no cat and Ive also ran it open dp and made no difference. I have a dual port actuator on the wastegate with only the one line in use which ive read is fine.
At this point I just really don't know what else it could be, if a boost leak were that major k-jet will surely let you know about it by running like garbage, but the car runs just like a 7 psi car should. Can someone shed some light please? You think the intake track to the fuel distributor doesn't like this bigger turbo? Thanks in advance
As far as mods, care has a smallish precision t3/t4 with .63 ar turbine and stage 3 wheel internal gate. Ported 90+, b21f intake, all new piping. Basically stock engine with an m47 and clutchnet red clutch.
The car runs great but simply refuses to make more than 7-8 psi in boost. I have literally devoted months trying to figure out why, been through 3 intercoolers thinking there were leaking at the tanks, did smoke test. Pulled turbo to check if wastegate flap was seated and it very much is, all new manifold gaskets so no pre turbo leaks. No sign what so ever of it leaking boost and the boost stays rock solid on 7 psi and doesn't creep or move, its pretty much self regulating even with the wg line pulled. I will add that I have a stock exhaust with no cat and Ive also ran it open dp and made no difference. I have a dual port actuator on the wastegate with only the one line in use which ive read is fine.
At this point I just really don't know what else it could be, if a boost leak were that major k-jet will surely let you know about it by running like garbage, but the car runs just like a 7 psi car should. Can someone shed some light please? You think the intake track to the fuel distributor doesn't like this bigger turbo? Thanks in advance