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Unread 01-10-2013, 04:03 PM   #1
Lunchbox70
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1984 CJ7 
 
Join Date: Sep 2010
Location: Las Vegas
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Serp belt to v belt?

You read that correct, i am wondering if anyone has info on this. long story short, junked original 258 and picked up a 1990 258 and want to convert it to v belt.

main question, will the crank pulley from an older 258 ( v belt ) bolt right on to replace my serp pulley?

just want to keep things simple, only running water pump and alt.
no power steering, no ac, no smog pump and i plan to keep it this way for a while. so in my mind its would just be a hassle to have a serp belt.

thanks guys.

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Unread 01-10-2013, 07:05 PM   #2
Matt1981CJ7
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Location: Elbert, CO
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Lunch,

A quick Google search turned up mixed information, for me.

But, the consensus was the serp 258's crank nose is shorter than the v-belt version, and that v-belts will not work on the serp crank.

Also, I believe the serp 258's water pump was a reverse direction, no? I'm not sure how that would work with the v-belt setup.

Hope this helps, or at least bumps your question to someone who knows for sure.

Matt
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Unread 01-10-2013, 07:11 PM   #3
fourbtgait
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Quote:
Originally Posted by Matt1981CJ7
Lunch,

A quick Google search turned up mixed information, for me.

But, the consensus was the serp 258's crank nose is shorter than the v-belt version, and that v-belts will not work on the serp crank.

Also, I believe the serp 258's water pump was a reverse direction, no? I'm not sure how that would work with the v-belt setup.

Hope this helps, or at least bumps your question to someone who knows for sure.

Matt
Matt,

You are correct about the water pump, would need to buy opposite direction flow for a fact.
Not sure about crank nose, though I can see it.

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Unread 01-10-2013, 07:40 PM   #4
5-90
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1988 XJ Cherokee 
 
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Quote:
Originally Posted by Lunchbox70 View Post
You read that correct, i am wondering if anyone has info on this. long story short, junked original 258 and picked up a 1990 258 and want to convert it to v belt.

main question, will the crank pulley from an older 258 ( v belt ) bolt right on to replace my serp pulley?

just want to keep things simple, only running water pump and alt.
no power steering, no ac, no smog pump and i plan to keep it this way for a while. so in my mind its would just be a hassle to have a serp belt.

thanks guys.
1) There's nothing wrong with a snake belt - it usually lasts a bit longer anyhow.

2) Don't forget to change your water pump - you'll be spinning it the other way, if you change.

There may or may not be a difference in length for the crank snout between the two - so watch out. It's probably not anything that can't be handled easily, but it is a potential pitfall...
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