Are 92-97 crank pulley assemblies the same?
Can anybody confirm this? I can't remember... :dunno:
thx! |
Yes but no.... the 1.6 long nose can have a 1.8 crank pulley bolt to it. However, one of the local guys with a 1.8 transplant was trying to install a 6-rib SC, and the sc pulleys didn't fit into the crank pulley. Turns out the 1.8 had a 1.6 long nose pulley on it, which are different dimensions than the 1.8s.
However, you have to remember the alt belt on a 1.8 is a flat rib style, vs. the v-belt on the 1.6. So that's the bigger problem. That said, supposedly a escort crank pulley is the same dimensions as the 1.8, but includes the v-belt... So I believe that was the solution to his issue. If you are talkin' about the pulley boss (crank bolt goes through) then logic would say yes, given the above information, but I haven't tried that combo..... Dave, |
Turns out the 1.8 had a 1.6 long nose pulley on it, which are different dimensions than the 1.8s. However, you have to remember the alt belt on a 1.8 is a flat rib style, vs. the v-belt on the 1.6. So that's the bigger problem. That said, supposedly a escort crank pulley is the same dimensions as the 1.8, but includes the v-belt... So I believe that was the solution to his issue. If you are talkin' about the pulley boss (crank bolt goes through) then logic would say yes, given the above information, but I haven't tried that combo..... |
Originally Posted by m2cupcar
(Post 425361)
meaning the width of the belt track on the pulley?
Just dug around the parts stored in the shed and found three alternators - two vbelts and one ribbed. Lucky me. probably won't find one of those before the weekend I need the entire assembly. I have a bad small nose 1.6 in the car and a good big nose 1.6 w/o the pulley assembly (gear only) to go in. Dave, |
I got a schooling from a local miata mechanic on all this, but forgot the details. ;) Basically, all the late 91+ crank pulleys will bolt up to the to all the 91+ cranks. Once the change went to ribbed accessories, you then have to contend with the axial (fore/aft) offset of the pulleys. So one is best off grabbing the entire pulley set from the same year crank pulley. I ended up with a 94 set, same as 95... and that offset changed in 96, same as 97.
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Originally Posted by steelrat
(Post 426012)
If you are going to run with the 1.8 ribbed... check the connections on the alt, they were supposedly different between the 1.6/1.8. |
the truth
So I got around to putting my 94 pulley on my 90 Vpulley alternator and didn't work. Why? Because the Vpulley alternators have a thinner shorter shaft - which means the 94 ribbed pulley has excessive tolerance at the bore, and the pulley shaft threads aren't exposed. That sounds so softcore. :giggle:
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Originally Posted by nicacus
(Post 426050)
The connections are the same I've got a 1995 alternator in my 92
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