Replacing base gaskets on an XCR800 and.... - HCS Snowmobile Forums

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Old 11-24-2007, 08:46 PM   #1 (permalink)
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Pushed out thte base gasket last year. These look like the stock ones? What's the best replacement?


Looks like a small piece went through the engine.



Sled is supposed to have 1100 miles on it(ya right) but pistons and bores look good. Has the stock jetting and all three piston tops look like this.



Replaced the carb slids last year.

Debating on the water pump seeing as its this far down. What's needed?

Any other suggestions?



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Old 11-24-2007, 09:35 PM   #2 (permalink)
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for the wp you would need several gaskets and 1 seal and you can get the 2 bearings from napa pm me if you need the numbers and I will find them for you. The base gasket ranks right up there on the weird shit-o-meter.
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Old 11-24-2007, 09:40 PM   #3 (permalink)
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seen lots of paper base gaskets pop out. get ahold of cometic or I can look up the number if you want. I only run aluminum, rubber coated, never blow out like paper, about the same cost but also reusable.
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Old 11-24-2007, 10:07 PM   #4 (permalink)
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Quote:
for the wp you would need several gaskets and 1 seal and you can get the 2 bearings from napa pm me if you need the numbers and I will find them for you. The base gasket ranks right up there on the weird shit-o-meter.[/b]
Just need the bearing part numbers if you have them. I have a Winderosa gasket kit on hand I could use for the pump.


Quote:
seen lots of paper base gaskets pop out. get ahold of cometic or I can look up the number if you want. I only run aluminum, rubber coated, never blow out like paper, about the same cost but also reusable.[/b]
Cometic do the aluminum coated ones? I bought the Winderosa set just to get some spares on hand but they are just paper gaskets...
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Old 11-25-2007, 12:12 AM   #5 (permalink)
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The paper ones don't seem to hold up. Go with the rubber coated aluminum.
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Old 11-25-2007, 12:13 AM   #6 (permalink)
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I wouldn't put a winderosa base gasket on ANYTHING ! You'll be doing it again if you do. learned my lesson on using them on XLT's and won't use them on anything more.
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Old 11-25-2007, 12:54 AM   #7 (permalink)
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Can one of you point me to a source for the alum gaskets? Did that torn gasket in the pic look like a Polaris part or somethng else? Thanks
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Old 11-25-2007, 09:16 AM   #8 (permalink)
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just look up cometic.com and send them an email for stock gaskets but in aluminum rubber coated.

on a side note. if you look at your cylinder picture, on the top and bottom are your transfer ports, there is a bridge that makes it two passages, sharpen that to a knife edge, you will only gain a hp or two but you will have a lot cleaner idle and more crisp throttle response.
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Old 11-25-2007, 11:18 AM   #9 (permalink)
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Doug Flannery also keeps them in stock. That does look like the stock gasket in your pic.
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Old 11-25-2007, 12:00 PM   #10 (permalink)
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Are such base gaskets available for the small block twins?
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