missing an engine bolt

[Vets07]

So cleaning my clutch getting ready for the season and when i removed primary i found that the engine mounting bolt below my secondary is not there. It is a 2012 etec. My question is does anyone know how long this bolt is? It appears to have spun out as i can see threads but without pulling secondary off i cant see if it is sheared or not. I stuck a feeler wire into the hole and the hole is approximatly an inch deep.
Any thoughts?
Im hoping to just put a new bolt in with some locktight call it good?

 

[SUMMIT TREE]

thought1: I suspect the female threads are part of the rubber mount and that the bolt just come out. I would just order the right bolt for that right from BRP.
thought 2: don't forget to retorque your clutch to 88 lbs/ft after running the sled on a track stand and slamming the brakes 3 times (or going for a short ride works too) It WILL get loose so this is very important and re torque again after 10 hrs.
thought 3: Maybe its a funny angle of the picture but something looks off about your crank seal to me. I dunno what but it looks like that piece at the top is coming out of the seal.
Thought 4: just an FYI the clutch is timed to the crank shaft on an E-tec for balancing reasons.

Hope this helps some

 

[pistonbroke800]

I had that mount bolt shear off on mine. Im waiting for my new crank now.....Might wanna check your run out too.

 

[Vets07]

thought1: I suspect the female threads are part of the rubber mount and that the bolt just come out. I would just order the right bolt for that right from BRP.
thought 2: don't forget to retorque your clutch to 88 lbs/ft after running the sled on a track stand and slamming the brakes 3 times (or going for a short ride works too) It WILL get loose so this is very important and re torque again after 10 hrs.
thought 3: Maybe its a funny angle of the picture but something looks off about your crank seal to me. I dunno what but it looks like that piece at the top is coming out of the seal.
Thought 4: just an FYI the clutch is timed to the crank shaft on an E-tec for balancing reasons.

Hope this helps some

Thanks summit tree the funny looking seal is just left over water from the removal of the primary. It appears fine.


I'm going to have to check the runout. Thanks for that pistonbroke.



You say that the primary is timed to the crank? I thought just the outer and inner clutch sheaves were balanced together that's all I've marked on any other sleds I didn't think to mark them to the shaft. Does it really matter were it goes back on the tapered crank? I did refer to the service manual befor and it didn't say anything about matching back up with crank after.

 

[d mills]

I had that mount bolt shear off on mine. Im waiting for my new crank now.....Might wanna check your run out too.

Just cleaned my clutches. Gonna double check. Run out same spec as 800r?

 

[Vets07]

Service manual says max centre crankshaft deflection is .0016" on both 800 ptec and etec for 2012.

 

[d mills]

Service manual says max centre crankshaft deflection is .0016" on both 800 ptec and exec for 2012.

Just rebuilt my bros 07. Was 0.0004. Got the gauge here. Worth a check.

 

[teeroy]

Just rebuilt my bros 07. Was 0.0004. Got the gauge here. Worth a check.

when mine blowed up my dealer had a brand new '08 shortblock in stock, made him measure the runout before I left the place and it was .0003, he said he has seen new out of the box measure as much as .0015 on the 800R....like wow. Ralph at Split Second also told me he has seen brand new cranks that he ordered from 'doo out of spec. said he has been able to true a few of them, but some are beyond saving and had to be returned. that's scary

 

[d mills]

when mine blowed up my dealer had a brand new '08 shortblock in stock, made him measure the runout before I left the place and it was .0003, he said he has seen new out of the box measure as much as .0015 on the 800R....like wow. Ralph at Split Second also told me he has seen brand new cranks that he ordered from 'doo out of spec. said he has been able to true a few of them, but some are beyond saving and had to be returned. that's scary

He bought the god damned thing while I was gone. Even after my "fun" with my 07. Motor is solid top to bottom now but you still can never really seem to trust it. And your pretty much married. Can't give the fawkers away. Lol

 

[d mills]

Oh......and after 1 season it was 65 psi mag....120 pto. This is after purchase and then 400 k.

 

[teeroy]

He bought the god damned thing while I was gone. Even after my "fun" with my 07. Motor is solid top to bottom now but you still can never really seem to trust it. And your pretty much married. Can't give the fawkers away. Lol

i have a friend that has an '07 and it hasn't ever had a crank or engine problem. I tease him that he has to keep it, no one's ever going to buy that sled with the original motor in it. he got cursed with a good one...lol

 

[d mills]

Yeah....no doubt. Just glad mine blew on warranty. And sold before the next. Although I sunk enough into the clutching on that thing for a down payment on a new one. Haha. Fawk.

 

[Vets07]

just measured crank runout 1/8" away from end of pto shaft and deflection was .0014 to .0016" (crappy mounting system for my gauge) anyway referenced service manual says spec is .0024 on pto side .0016 at center and .002 on mag side. So the runout shouldn't of played a factor.


Thanks for the advice guys. ive been coming on this site for a couple years now and reading countless hrs of valuable information from everyone.

 

[SUMMIT TREE]

yes, on E-tec models only there is a small circle and a large circle stamped in the sliding sheave.all the timing marks on the fixed and sliding sheaves are timed to the smaller circle. the larger circle is timed to a notch stamped in the end of the crank shaft. I don't know how much this affects balance but thats how it should be.I think i can actually see the notch painted white in your picture.

 

[Vets07]

yes, on E-tec models only there is a small circle and a large circle stamped in the sliding sheave.all the timing marks on the fixed and sliding sheaves are timed to the smaller circle. the larger circle is timed to a notch stamped in the end of the crank shaft. I don't know how much this affects balance but thats how it should be.I think i can actually see the notch painted white in your picture.

yes the white mark is a notch in the crank. Thanks ill have to line it up with the larger circle.