C4 vs C5 Powersteering pump?
Thread Starter
Racer
Joined: Dec 2000
Posts: 276
Likes: 7
From: L.A., CA.
C4 vs C5 Powersteering pump?
What are the differences between the C4 and C5 powersteering pumps?
The C5 dosn't seem to have the high rpm problems that the C4 has.
Can the C5 pump be used on the C4?
The C5 dosn't seem to have the high rpm problems that the C4 has.
Can the C5 pump be used on the C4?
Pro
Joined: Oct 2002
Posts: 515
Likes: 0
From: Everett WA
Re: C4 vs C5 Powersteering pump? (Zpeedstr)
high rpm problems? like what?
btw, i dont know the answer to your question, but am intrested in the outcome.
i would think that it could, but i dont know if it would bolt right up.
btw, i dont know the answer to your question, but am intrested in the outcome.
i would think that it could, but i dont know if it would bolt right up.
Thread Starter
Racer
Joined: Dec 2000
Posts: 276
Likes: 7
From: L.A., CA.
Pump fix
After analysis, the loss of power steering at high rpm is probably attributable to cavitation or overheating. I sent the pump to Lee Mfg for a reduction of flow by installing a smaller rotor (the next size down about 75%). There is no noticable loss of assist at low RPM. Also went with Lee fluid. Haven't been to the track yet for a real test, but so far so good.
Note that the LT4 pump is reverse rotation and requires special reassembly.
Note that the LT4 pump is reverse rotation and requires special reassembly.
