07 800 r bad crank??

ski doo valmont · Jan 8, 2010

My o7 800r summit went blewwy today got it apart the rod bearing on recoil side burnt up is this from there wonderful crank or could it be were the oil line squirts in oil in not working ? pistons did not score but it all happened at about 15 miles per hour would like to know where should I send the crank to get rebuilt I am in Wisconsin.

gman086 · Jan 9, 2010

If you don't have the updated case with the "R" stamp then that was bound to happen sooner or later as BRP had improper bearing races at the beginning of '07. Big John at Sled Heads Racing in MN is my recommendation for you. He'll correct the case and make things right.

Have FUN!

G MAN

NEWDUCK · Jan 9, 2010

sorry to steal the thread but where would the R be stamped at if I had one?

ski doo valmont · Jan 9, 2010

gman086 said:
If you don't have the updated case with the "R" stamp then that was bound to happen sooner or later as BRP had improper bearing races at the beginning of '07. Big John at Sled Heads Racing in MN is my recommendation for you. He'll correct the case and make things right.

Have FUN!

G MAN

Just had a long talk with northern crankshaft in min sounds like my cases need work done also I will check with the guy that you said, thanks , also would like to know where the R stamp is??

Dootimes2 · Jan 9, 2010

Should be on the case next to where the torque stop is.

gman086 · Jan 10, 2010

Dootimes2 said:
Should be on the case next to where the torque stop is.

Correct, there is a circular area near the stop that would have the R stamp.

Have FUN!

G MAN

evandaigneault · Jan 10, 2010

you can get a remanufactured crank from ski doo with a 1 year warranty too, rather than having the one you have be rebuilt.

There is also the short block route. $1200 or so depending on where you get it.

Evan

sledsrock · Jan 10, 2010

Hmmmm.......not seeing the connection between the rod bearing problem and the case issue? "R' or no "R"............what am I missing?

ski doo valmont · Jan 10, 2010

Summit670 said:
Hmmmm.......not seeing the connection between the rod bearing problem and the case issue? "R' or no "R"............what am I missing?

Me neither other than my inner crank bearings are rough also. Still having a hard time finding a crank. Would like to get a used one and dump it to the dealer I bought it from!!!!!!!!!

gman086 · Jan 10, 2010

Summit670 said:
Hmmmm.......not seeing the connection between the rod bearing problem and the case issue? "R' or no "R"............what am I missing?

The bearing races in the "R" stamped cases are larger to allow for bearing expansion and to prevent seizing. The bearing races were too tight on the initial run of '07's. The R simply identifies the updated case.

Have FUN!

G MAN

sledsrock · Jan 11, 2010

gman086 said:
The bearing races in the "R" stamped cases are larger to allow for bearing expansion and to prevent seizing. The bearing races were too tight on the initial run of '07's. The R simply identifies the updated case.

Have FUN!

G MAN

That's all good, I knew that. How does the cases affect the rod bearings?

gman086 · Jan 11, 2010

Ah, All I saw was crank and bad bearing so my bad! Rod bearings don't usually fail tho unless something is wrong with the crank or rod itself.

Have FUN!

G MAN

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07 800 r bad crank??

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