b13TD wrote:I really like the direction this build is heading, and look forward to the developments. I also wonder what head bolts or studs you are going to use. Themadscientist, why must you use M12 capscrew bolts?
Tommey, what is the length of the stock CD20 head bolts?
I actually came upon this thread whilst searching for head studs to use on a superturbo CD20T engine. I found ARP 202-4702 may or may not be the right part number, and that at least for CA18 engines, the stock head bolts are not stretch to yield types. Are the ARP head studs any good for high power CA18 engines? I am not having any issues with the head gasket, but want to "clamp down" on any future problems when the boost and fuel are increased, so the studs may be worthwhile for me.
Tommey, when you do get the engine running, I can attest that the full counterweight crank may indeed be quite smooth at higher rpms. At least in the CD20T, even at 6k+ rpms, I am amazed how smooth this engine feels, especially for a diesel, and even for a petrol engine. The engine almost feels balance shaft equipped.
I dont know the length of the CD20 headbolts, i must buy some and see if i can use them on the CA head.
The CD bolts are m12 vs the CA`s m10, and i dont use ARP headstuds on any of my engines and i do not recomend them to others either.
The ARP`s are not bad, but i would stick to the stock bolts if i were you.
Thanks for compliments on my project!