just got a 200 block and can see cracks across one of the head bolt holes going either side to the water jacket openings its only on the second from, front

 

If it's cracked, it's scrap mate.

 

not really.

Depending what one you can get it welded up and then machined to take long studs.

These pass through the normal holes and screw into the new holes further down in the block.

the new long studs don't touch the old hole so there is no pressure on the welded bit.

 

that may be the best news iv'e had today
it's the second one from front on the left of the engine looking from the front
who would be able to do this and more impotanly how much

 

has it cracked just between the water jacket.

Can you get some pics.

 

oh sorry,

Ishould think that any good machine shpo would be able to do the work on it.

 

yup it's just between the water jackets
also how much power would this take or am i better getting a new one

 

i thought that where the headbolts are, these are also pressurised oil galleries to take oil to the head

 

Will be ok when all welded up as its only in the water galleries.

The welded up bit stops the water getting passed into the gasket.

When the block gets machined they make the old hole bigger so the new long studs can pass through and screw down into the new threads further down inside the block,therefore no pressure on the weled up area of the cracked bit.

Paul,

there are oil galleries but there at the side of these holes and are nothing to do with the bolt holes.

 

im sure that it cracks between the oil on one side and the water onthe other side, caused by water in the headbolt hole

thats why a make of mine broke his MINT cossie

might be a better idea to find another block and trasfer it all over

 

what are the advantages of longstudding a block and how much is it

 

to save you getting a new block,lol.

No....

long studding is done to have more clamping force on the head when running higher boost.

The studs are not strech bolts and these can be re-used too.



Ginge,

All depends where it cracks.His has cracked between the water gallery so this will be ok to get fixed.

i have a spare engine in my shed with damage like this too and i qwill be keeping that as a back up block.

 

how much to long stud one then ????

 

in PJ m/sport advert.....

Group A long head stud conversion inc. studs and machining....Ł350.

there are different options of stainless studs....

and 10 stud conversions.

 

Think you could get it done cheaper if you ring around.

 

Ł132 for the stud and nut kit from PJ's.

 

worth the risk then imo

 

it is if the block is a good one.