break in for new top ends (91 RXL)

602 Views 5 Replies 6 Participants Last post by vmaxyam, Jan 19, 2002

snorider35

Discussion Starter · Jan 17, 2002

OK,

I finally got it back together. I was wondering if anybody knows how I should go about breaking in the new pistons and wrings. They are wisecoes and I have heard that they are a sesative to being broke in properly.

Thanks

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91 RXL/SKS 650
91 Exciter II 570

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picklekx100

· #2 · Jan 18, 2002

your pistons should of come with a little yellow paper it will tell you on there for brek in time, if i doesnt i would take it easy for about and hour (dont keep it woulnd for more then 5 seconds) then slowly start pushing it a little more.

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erick

· #3 · Jan 18, 2002

Rule of thumb is usually about one tank of gas. I never really go for that though. If it is just pistons - 15 to 20 miles is fine.

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Polaris-Man

· #4 · Jan 18, 2002

I'd run 1 tank of fuel with oil mixed in.

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TriumphoverU

· #5 · Jan 18, 2002

Im gonna go out on a limb here and say do exactly like the book says when the sled was new. Run one complete tank of pre-mix gasoline (50:1 mix) through the motor before adding any more gas to the tank. Now alot of people dont agree with this or think it is unnecessary, but i believe that if taking it easy for the first tank does me ANY GOOD AT ALL, it is worth it. So i would take it easy for the first tank and then see how things go.

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vmaxyam

· #6 · Jan 19, 2002

for those pistons I would follow there instuctions to the tee. wiescos tend to swell extremely under heat expesially when there new.

Vmaxyam

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