The studs on my cylinder have small cracks around the back of flange

[vwblooded]

It's where the head gasket bolts to there only around where the top bolt goes and the top left I couldn't get them torqued to 25 only about 20-22 ft lbs is this alright I replaced all the gaskets any help would be great thanks

 

[Wheels]

Post some pics. Why can't you torque them fully?

 

[vwblooded]

Cause. I'm scared there going t

 

[vwblooded]

Cause I'm scared there goin to crack more and the studs will come out I can't take a pic cause I have the head on and it was a new gasket and it's set should I go ahead and keep torquing?

 

[vwblooded]

They feel like there no building up pressure it feels like there threading on easy

 

[Blaaster]

It's where the head gasket bolts to there only around where the top bolt goes and the top left I couldn't get them torqued to 25 only about 20-22 ft lbs is this alright I replaced all the gaskets any help would be great thanks

Where did you get the figure of 25, the head bolts should be tensioned to 20 ft lbs.

 

[vwblooded]

I watched Ken oconnor engine assembly vids on YouTube he torqued them to 25

 

[vwblooded]

I'm just goin to order new studs and bolts washers I just wanna ride

 

[Blaaster]

I differ from Ken, I always advise what the Yamaha service manual calls for, and they state 20 ft lbs for head and 18 for the cylinder.

 

[York Racing]

There is no way I would run cracked studs. They have to be able to stand up to extreme heat and pressure. If they don't, POW. New top end time! So yes, replace the studs.

 

[Blaaster]

Did you oil the studs,?

Nuts and bolts should be tensioned clean and dry, unless otherwise specified.

 

[JBRoc01blaster]

Are you sure they are cracked and not just being pulled out of the cylinder when being tightened ? If they do in fact show any sign of cracking or fatigue then you should buy new studs and don't start your motor until the old ones are replaced !

 

[Wheels]

It sounds like the damage is with the threads in the jug. I don't understand what this guy is trying to tell us and no pics.