I made a change the other day when I relaized the wastegate solenoid should be vented on the other side and not capped (DUH! on me). Since I removed the cap, the old fcty turbo (yes, the one that's slowly leaking) has been able to spool quite nicely . So much so that it was spiking to 20lbs and creating knock. Removing that cap has changed a few things.
So I turned the boost down 4 complete turns and it's strange. If I ease into the boost, it won't knock (audible to my ear) until I get far into the throttle. If I jump on it (make it downshift) from crusing speed (like 45mph), it will knock like a baby rattle. Of course, when I hear it I let off. I have not been able to get my eyesight over to the boost gauge fast enough to see where my max boost it set at before I have to let off due to knock. Should be 16lbs.
I am thinking my fuel system isn't up to par and it's running out of gas. Now, I have a Bosch adj FPR (set @ 42psi static) and a Red Armstrong FP. They have been installed since the early 90's. The FP has never been hot wired. Until now, I have not had a problem with knock.
I am planning on hot wiring, but here is the question...
Do you think my adj FPR and FP that I have are still good enough to keep up once it's hot wired?
Lots of miles on them, probably well over 100k.
Fuel sock and filter were changed at 145k.
I'm asking ahead of time because if fresh parts are in order I'll do it all at once.
I'm open to opinions and suggestions.
Z
So I turned the boost down 4 complete turns and it's strange. If I ease into the boost, it won't knock (audible to my ear) until I get far into the throttle. If I jump on it (make it downshift) from crusing speed (like 45mph), it will knock like a baby rattle. Of course, when I hear it I let off. I have not been able to get my eyesight over to the boost gauge fast enough to see where my max boost it set at before I have to let off due to knock. Should be 16lbs.
I am thinking my fuel system isn't up to par and it's running out of gas. Now, I have a Bosch adj FPR (set @ 42psi static) and a Red Armstrong FP. They have been installed since the early 90's. The FP has never been hot wired. Until now, I have not had a problem with knock.
I am planning on hot wiring, but here is the question...
Do you think my adj FPR and FP that I have are still good enough to keep up once it's hot wired?
Lots of miles on them, probably well over 100k.
Fuel sock and filter were changed at 145k.
I'm asking ahead of time because if fresh parts are in order I'll do it all at once.
I'm open to opinions and suggestions.
Z