300ZX Alternator belt, lengths... lesson learnt

Russ

Russ

Club Member
Thought I'd share this incase it saves someone else from doing the same.

My alternator belt has been a bit tired since I bought the car, so I bought three belts, change them all, from the local motor factors (I was in a hurry and £15ish all in). I finally got around to fitting them this morning, bit of a pig of a job even on the ramp. Note your air con pump, alt, fan etc all only have one adjuster/pinch bolts so don't spend ages looking for others.

I fitted all three, went to adjust the alternator last of all, and the belt was way too long. I read the numbers, I bough a 1038 (mm I presume) long belt, and the old one is 1010. I have bought a UK alternator belt, and the Japanese imports have a smaller alternator pulley and require a shorter belt :) By then it was too late to change back so had to drive home with an alternator belt that squeeled a bit at the lights :rolleyes: I'll fit the correct length next weekend :) D'oh.
 
You may well have bought the wrong belt(s) but I have found that with our Zx's it doesn't pay to buy from a factor. Always buy the correct Nissan ones. The factors ones always seem to be slightly different.
 
I measured them up and they seem the same, and the numbers match up etc. I'll let you know if I have a problem :)
 
Wait till you have a lighter pulley which is quite a bit smaller, then none of the standard sizes work. I spent a long time with some one in a car parts shop trying to Guess right sizes.
 
The Jap water pump pulley is significantly smaller than the Uk version, affecting belt size (and the speed at which the water pump spins).
 
Ah hah, is the jap waterpump faster then? Which is better?

Fitted a 1013 today, much better :)
 
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