25-05-2012, 04:13 AM
Regarding head bolts, head gasket and skimming pistons...
The plan is to keep to under 30psi with my 'bigger' turbo. But even so i am wanting to take precautions to keep some sort of reliability (don't laugh
) at around 200bhp by lopping off some compression and using hdi rods.
Which gasket should i use with the skimmed pistons? - The thickest gasket available?
I remember reading about some uprated cheaper stud/nut combo head fastners (think Ruan may have mentioned it) as an alternative to ARP stuff. Is anyone able to shed some light on that please? While the engine is apart, i might as well splash out now and sort things to stop the head lifting/gasket going again in future.
Finally, any advice on the amount of material to skim off the pistons - 5mm? Or atleast a target compression ratio that i can work towards would be kl.
The plan is to keep to under 30psi with my 'bigger' turbo. But even so i am wanting to take precautions to keep some sort of reliability (don't laugh
) at around 200bhp by lopping off some compression and using hdi rods.Which gasket should i use with the skimmed pistons? - The thickest gasket available?
I remember reading about some uprated cheaper stud/nut combo head fastners (think Ruan may have mentioned it) as an alternative to ARP stuff. Is anyone able to shed some light on that please? While the engine is apart, i might as well splash out now and sort things to stop the head lifting/gasket going again in future.
Finally, any advice on the amount of material to skim off the pistons - 5mm? Or atleast a target compression ratio that i can work towards would be kl.
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Dturbo GT2259s build thread;
http://306oc.co.uk/forum/thread-3692.html
Daily driver; 330d Msport (doesn't blow up!)