-URGENT- small cracks in the head

**A80Avant** · 11 March 2009, 18:21

those seem to go all the way to the seat valve.Either find someone that can service that head or get a head without cracks.

i ended up with 3 cyl.heads before i found this one i use now that doesnt have any cracks.However one aan that i have i will have it fixed at some point.

**SteveH** · 11 March 2009, 18:33

There is an acceptable level for cracks in the head. The 3B erWin manual has the definition of what's ok. I think it mentions the depth of the cracks and how many plug threads they run through. Lemmi see if I can find it, if not, I'm sure others will advise you. If your going for more than standard power it may be wise to look for a decent 7A head and have it machined. I think Spink on the forum has done a few of these.

**valjo** · 11 March 2009, 18:41

as long cracks arent between valves dont worry. i saw many s2/s4 cracked heads but cars run great .....

**aelred** · 11 March 2009, 18:53

If you are going to pump big BHP forget it, go for a good head to start with, will be cheaper on the long run. Small cracks might be alright on a standard engine but not on uprated one.

**Rocco** · 12 March 2009, 13:33

thank you friends for all replies

today Peter kowaksch after saw my e mail + head pictures said me that i will can drive in theory perfectly for 20000kms or more ( i think that these 20000kms are going hard with the turbo

) BUT in the next future/chance try to buy an other head

(7A,3B,ABY,AAN,ADU...) because weld the head it´s not a good option here

my actuals cracks between spark/ valve seat are not to huge...Peter´s said

i am more happy now just after bought my custom metal head gasket for compression drop.. 8´8:1... the hight compression levels kills the head

,for the next future.... a stroker project

i´ve bought a AAN ebgine block with 220000kms in very good condition for 300€¡¡

SEE YOU

-URGENT- small cracks in the head

-URGENT- small cracks in the head

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