4age hybrid ARP headstud issues

[bluemaumau]

specs:

20v silvertop block
smallport 16v head
ARP head studs
TRD 0.8mm metal HG
4AGZE CAS

ive run into this issue im hoping some knowledgable people may be able to help me with.

as i slide the CAS into its port it is just fouling on the head stud below it.

here are some pictures:








sorry about the image size i cant get the resize thingy to work

the head is torqued down to 60ft/lbs and i have used the ARP moly lube.

ive sort of run out of ideas, so any help or suggestions to why this is occuring would be greatly received.

hopefully its something simple

cheers

[ChaosAD]

There was a thread about this not long ago. Forget how they fixed it but a search should bring it up

[QikStarlie]

yeh. the bolts were upside down in last thread i think. but look to be right way in those pics.

i'd say the bolts have not been wound down into the block enough, before you put head on and torqued up.

[bluemaumau]

yea wrong way last time.

im sure they are right down. i put a ruler on top of them and all 4 exhaust studs are level, and the "problem" stud was atleast 6-8mm lower.

so im guessing it is supposed to be sitting lower than the other 4.

[QikStarlie]

dont remember mine being lower, but could have been. if it can't go down futher, you'l just have to pull the stud out and trim the end off.

[4agtepwr]

mine was exactly the same, I shortend the cas shaft so it would clear

[Trls250s]

off topic a bit, but are you runing 20v pistons with 16 head? If so tell me how that goes as i was thinking of doing the same.

[IH8TEC]

this is weird, cause i never had a problem

[Lloyd]

You can always grind something off somewhere

[bluemaumau]

what to grind? CAS or stud?

nope ae101 oversize gze pistons.

[TRD_ZERO]

ID say grind the cas as 4agtepwr said i wouldnt want to hinder the structural integrity of the stud.

[bluemaumau]

yea i understandd that, but CAS's are expensive and spinning pretty fast, wouldnt want to unbalance it

[slighty_sykotic]

I really doubt you would, just grind it flat across, then you can't hurt it.


They are only spinning at up to half engine rpm aswell?

[bluemaumau]

true, wouldnt be too bad if i just cut a angled fillet of the stud tho would it?

thanks for everyones help btw

[slighty_sykotic]

Not until you tried to undone it in a years time, after it has seized in place...


And the stud cracks across where u weakened it.

[bluemaumau]

true that,

come here CAS!