Turbo1dr
9 Sec Wanna-Be
- Joined
- May 25, 2001
- Messages
- 2,418
What kind of line pressures are needed for a 200-4R at idle, part throttle & WOT?
I'm asking this because it's like the trans slips during part throttle while the boost is 15 to 18psi. When it happens the engine will sometimes rev (as the engines torque increases) like it partially comes out of gear. Of course, when that happens I just let off the throttle. I can datalog the rpm and tire speed so I can confirm that it's not tire spin. I think it just don't have enough pressure at part throttle to hold the engines torque. The engine is a 249" stroker 109, GN1-R's, 70GTQ.
Here is what I have on a fully warmed up trans.
120psi at idle
190psi at part throttle
210psi at wide open throttle
I'm asking this because it's like the trans slips during part throttle while the boost is 15 to 18psi. When it happens the engine will sometimes rev (as the engines torque increases) like it partially comes out of gear. Of course, when that happens I just let off the throttle. I can datalog the rpm and tire speed so I can confirm that it's not tire spin. I think it just don't have enough pressure at part throttle to hold the engines torque. The engine is a 249" stroker 109, GN1-R's, 70GTQ.
Here is what I have on a fully warmed up trans.
120psi at idle
190psi at part throttle
210psi at wide open throttle