Pulley Alignment
Thread Starter
Instructor
Joined: Apr 2017
Posts: 205
Likes: 4
Pulley Alignment
75 Coupe
Original motor NLA - current motor 1980 Z28 - very similar motor.
Anyway, the crank pulley and the water pump pulley don't seem to line up as much as I'd like. See photo.
As it is, I'm having to shim out the AC compressor and it's still a bit off.
Generator seems to be closest to true.
Power steering is the worst.
It looks to me that the pulley on the water pump is just wrong????
Anyway, curious if anyone has any ideas.
Thanks,
Len
Original motor NLA - current motor 1980 Z28 - very similar motor.
Anyway, the crank pulley and the water pump pulley don't seem to line up as much as I'd like. See photo.
As it is, I'm having to shim out the AC compressor and it's still a bit off.
Generator seems to be closest to true.
Power steering is the worst.
It looks to me that the pulley on the water pump is just wrong????
Anyway, curious if anyone has any ideas.
Thanks,
Len
Le Mans Master
Joined: Jan 2001
Posts: 6,743
Likes: 1,385
Post some pulley numbers for the pulleys you have installed. Then we can try to assist. Is that the original water pump that you are using? OR, did you get something new?
Do you have power steering? Take a picture of that view also.
You may have to modify the a/c compressor mounting since it looks aftermarket.... I had to modify mine.
Anyway, get those pulley part numbers for the crank, water pump, and alternator and post those.
Do you have power steering? Take a picture of that view also.
You may have to modify the a/c compressor mounting since it looks aftermarket.... I had to modify mine.
Anyway, get those pulley part numbers for the crank, water pump, and alternator and post those.
Last edited by carriljc; Sep 29, 2017 at 11:00 AM.
Pro
Joined: Sep 2017
Posts: 516
Likes: 72
From: Modesto California
Pulley alignment problems are often caused by the positioning of the flange on the water pump shaft. I have seen the position of the flanges vary by plus or minus 1/8" depending on who makes the water pump. But v-belts have no problem dealing with misalignment's so it's not a problem. If it really bothers you you can press your flange on another 1/8" or so but you'll have to take the cover plate off and support the end of the shaft on the impeller end before doing any pressing.
