95 500efi to carb - HCS Snowmobile Forums

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Old 01-25-2006, 12:52 PM   #1 (permalink)
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Hello;

My name is Adam and I just found this site while searching for info. I am in the process of trying to convert my 95 Indy 500efi to carbs because the computer decided to pack it in. I have a set of 38mm carbs and I also have a 98 500 carb which I am using as a jetting guideline. My problem is that the bolt pattern for the boots is different on the efi cylinders than my 98 carb. I was wondering if anyone has every done this before or if there are boots available for this conversion. Any insight would be greatly appreciated.

btw, I did try searching first but only found info on RXL conversions.

Thanks

Adam
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Old 01-25-2006, 02:07 PM   #2 (permalink)
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Hey Adam-

Doing the same thing to my 95" RXL and you'll need to find some smaller diameter carb boots to fit the 38mm carbs but they need to have the same ctr/ctr mount hole distance.
The distance on the mount holes on the 500EFI cylinders should be 74.6mm I believe.
The cylinders from a carbed 500 and a 500 fuelie are different, the intake ports are bigger on the fuelie cylinders.

I might have the boots should you need a set.
Just double check the hole size (8mm?) and ctr/ctr distance. :div20:

Drew
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Old 01-25-2006, 04:32 PM   #3 (permalink)
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Hey man;

Thanks for the info, I actually found a set of universal boots by Kimpex locally. They carry the same part # as the Cat ones from the mid 90's. Thanks for the offer though.

Adam
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Old 01-26-2006, 05:25 PM   #4 (permalink)
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Quote:
Originally posted by jalopy51@Jan 25 2006, 04:32 PM
Hey man;

* Thanks for the info, I actually found a set of universal boots by Kimpex locally.* They carry the same part # as the Cat ones from the mid 90's.* Thanks for the offer though.

Adam
<div align="right">
[/quote]

If you can't be smart yourself, have smart friends...

One of my smart friends has told me that

The '91-92 Indy 650 with 38mm carb, used the RXL cylinders (with wider intake boot mounting bolt spacing, to allow for the large intake opening).

so...

converting a 500 EFI or a 650 RXL to 38mm carburetors, just use the above intake boot:

3084228 carb adapter $45US
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