Crack between valves

[67westy]

I believe it's fairly common but are these too cracked? Time to replace?

Worst one:

Not so bad:

 

[ozziedog]

Repairs are possible but hard to get perfect, but I think you is looking for new heads as they is not too spesh like that and can only get wider when warmed up, I`d start looking if it was me.

Ozziedog,,,,,,,,,,,,,, Then you`ll go superfast :mrgreen:

 

[67westy]

I've quickly progressed from new heads, to new heads barrells and pistons and now I'm looking at new engines :roll: Expensive lark this......

 

[robjarman]

are you still running lpg? hope not connected to this cracking...

cheers
Rob

 

[67westy]

Yup but heads were cracked before the LPG was installed. They have got a bit worse but I don't think it's due to the LPG.

 

[pkrboo]

I would go for new heads at least.

 

[robjarman]

glad it's not the lpg - did not think it should be...but it could have been...

good luck
Rob

 

[67westy]

Cheers for the info everyone. I bit the bullet and ordered a heritage engine in the end, been thinking about it for a while so seemed like a good opportunity as the engine was out. The engine was running well before this, only took the heads off for fixing an oil leak! The cracks seem to have got mixed opinions and I can't remember whether they have got worse since the head was last off a couple of years ago. Just need to decide what to do with the old one now....

 

[pkrboo]

Cheers for the info everyone. I bit the bullet and ordered a heritage engine in the end, been thinking about it for a while so seemed like a good opportunity as the engine was out. The engine was running well before this, only took the heads off for fixing an oil leak! The cracks seem to have got mixed opinions and I can't remember whether they have got worse since the head was last off a couple of years ago. Just need to decide what to do with the old one now....

Rebuild it into a monster engine

 

[67westy]

One option need to check the end float on it but I believe it is good. Problem is if I build a monster one I would have to take my shiny new one out to fit it. Dunno how my drum brakes would cope either :lol:

 

[pkrboo]

I see a disk brake upgrade in your future.....

 

[67westy]

I see a disk brake upgrade in your future.....

I think I need to sell this engine before I spend a fortune.......