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post #1 of (permalink) Old 07-20-2003, 12:58 PM Thread Starter
 
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4.0 Swap Help : 258 starter and fan clearance

I'll will finish my never ending 4.0 swap in my 1983 cj7...

As the 4.0 starter is trashed, I'd like to use the 258 sarter : is it possible ? do I need to shim it ?

I put the stock 258 radiator back in and it seems that there is not enough clearance between the radiator and the 4.0 fan. What did you guys used for a fan when performing this swap ?

Thanks for your help !
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post #2 of (permalink) Old 07-20-2003, 05:39 PM Thread Starter
 
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Re: 4.0 Swap Help : 258 starter and fan clearance

anyone ?
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post #3 of (permalink) Old 07-20-2003, 06:02 PM
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Re: 4.0 Swap Help : 258 starter and fan clearance

Is your 4.0L from a wrangler or cherokee? My 4.0L from a wrangler cleared fine with the stock 258 radiator.

I used the 258 starter on my 258 - but I also kept the 258 flexplate. so if you are using the 4.0L flexplate, you might need a 4.0L starter. I really like the 258 starter setup with the solenoid on the fender. very simple setup, and the starters are cheap ($30) to replace.

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post #4 of (permalink) Old 07-20-2003, 06:13 PM Thread Starter
 
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Re: 4.0 Swap Help : 258 starter and fan clearance

Thanks sloop
My 4.0 L is out of a 98 TJ. I don't know if the fan itself is different on a YJ...
Would do you have a picture of your set up ?

As I swaped the engine and tranny at the same time I'm using a 4.0 L flexplate..and when you look at both starters they look quite different..
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post #5 of (permalink) Old 07-21-2003, 10:36 AM
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Re: 4.0 Swap Help : 258 starter and fan clearance

I used the 4.0 starter. I tried the 258 starter, but it bound up, I think because it needs to be shimmed like you mentioned. I reused my 258 radiator and my 4.0 fan clears it with about an inch to spare. My 4.0 came out of a Cherokee.
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post #6 of (permalink) Old 07-21-2003, 10:44 AM
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Re: 4.0 Swap Help : 258 starter and fan clearance

here is the only picture of it that I have.

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File Type: jpg 1151699-4.0SWAP1.JPG (67.1 KB, 1 views)
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post #7 of (permalink) Old 07-21-2003, 11:01 AM Thread Starter
 
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Re: 4.0 Swap Help : 258 starter and fan clearance

Thanks for the pic Rick.
I can't believe the clearance you've got ! When everything is installed, I have something 1/4 of an inch between the fan clutch and my radiator.
I use the same radiator as you do, 3 core from 258 so I think it can only come from a difference in the fan thickness.
My fan out of a 98 TJ is a viscous clutch fan and is 4 3/4 thick if you measure it from the belt up.

Could you measure yours ?
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post #8 of (permalink) Old 07-21-2003, 03:01 PM
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Re: 4.0 Swap Help : 258 starter and fan clearance

I ended up having very little clearance (4.0 in a CJ) so I welded in some expanded steel just inside the radiator. Now there is no way for the fan to hit the radiator and it doesn't limit air flow at all.
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post #9 of (permalink) Old 07-21-2003, 03:45 PM
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Re: 4.0 Swap Help : 258 starter and fan clearance

The best that I can measure, it looks like from the belt to the radiator is 4-1/2 inches, from the belt to the radiator end of the fan is 3-1/2 inches. I have 1 inch clearance between the fan and radiator.

Also if you can notice from the picture, the Cherokee has its fan offset to the lower passenger side of the radiator. I think that the waterpumps are different from a YJ or TJ to a Cherokee.
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post #10 of (permalink) Old 07-21-2003, 04:51 PM Thread Starter
 
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Re: 4.0 Swap Help : 258 starter and fan clearance

Rick, Thanks for the measurment. Now I know that I have the correct clearance between my engine and the radiator but that my fan out of the TJ is too long.
I can either go electric or find a fan without clutch that would be shorter.

Raymo,
I don' get what you did exactly...did you move your radiator forward ? Could explain a little bit more ? I'm really trying hard but I can't figure what you did !

Thanks
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