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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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Old 12-04-2013, 08:41 AM
forgiven forgiven is offline
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Default Top end rebuild

What have you guys been going with? I see a new S3 kit with LONG LASTING rings.

It has been 3 years and about 250ish hours. I can feel a little is missing off the bottom. I reckon it is time.


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Old 12-04-2013, 08:45 AM
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I did the s3 kit, it wasn't a bad deal and seemed quality!
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Old 12-04-2013, 04:02 PM
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I think you'll be surprised how much you've lost over that time. Check the bore well. As the rings and piston wear you get more slap/rocking which then increases the load on the nikasil. Stock pistons are S3/rebadged cast vertex, I've always replaced with forged Wossners, but more to do with price than anything else. No issues with the stock gear.
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Old 12-04-2013, 07:40 PM
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Your best bet is to order a complete top-end kit from North Tahoe Motorsports.

Their kits include a Woosner piston kit, all gaskets and a top-end bearing. Doesn't get any easier. Call them if their Ebay store doesn't list what you need. Dealt with these guys before and they are first-rate.

Here's an example of a listing:

http://www.ebay.ca/itm/TOP-END-GASKE...item1c388c5aa9
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Old 12-04-2013, 10:20 PM
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Quote:
Originally Posted by JP4 View Post
Your best bet is to order a complete top-end kit from North Tahoe Motorsports.

Their kits include a Woosner piston kit, all gaskets and a top-end bearing. Doesn't get any easier. Call them if their Ebay store doesn't list what you need. Dealt with these guys before and they are first-rate.

Here's an example of a listing:

http://www.ebay.ca/itm/TOP-END-GASKE...item1c388c5aa9
I second that. Bob Piper is very straight-up and a great help, and he has stuff in stock.
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Old 12-04-2013, 10:58 PM
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We've got the Wossners in stock as well, with all the requisite gaskets ...
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Old 12-05-2013, 05:29 AM
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Mine is all stripped cleaned and polished ready for rebuilding! I have the day off work tomorrow, I thought I would use my last day of holiday constructively. I have polished the head and exhaust port, I'm using a Wossner piston with a top end gasket set from the Motocross Center. Just waiting on the small end bearing, the postman has been today and nothing!!!! If it doesn't arrive in the morning then I suppose it will be a wasted day of beer, polishing bits and more beer!

Still not sure about the base gaskets though. 2 gaskets and a plastic one!!! whats that all about? How do they go?
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Old 12-05-2013, 07:35 AM
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Default Plastic

You have a plastic base gasket? Never seen one . I'd think maybe to be sandwiched between 2 papers??????? How thick is it?
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Old 12-05-2013, 07:39 AM
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That is weird I've never seen one either. Can you take a pic of it?
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Old 12-05-2013, 11:01 AM
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Quote:
Originally Posted by Pepperami View Post
... Still not sure about the base gaskets though. 2 gaskets and a plastic one!!! whats that all about? How do they go?
I got the same thing in a gasket kit I bought from Motocross Center too.

The whole stack was thinner than the stock stack, but I didn't have anything else, so I bolted it up anyways. I wrote down the thickness of the stock base gaskets and the thickness of the new stack, but I don't have the numbers at hand.

I put the plastic one between the two papers and it worked out fine - no leaks.

With the thinner stack I had to fatten up the jetting a little - went from a 40 to a 42 PJ, and from clip position 2 to 3 on JD blue needle.
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