4 replies to this topic

[Hell34]

Hi all,
 
I've had a search through the forums but I can't find anything related to this. Apologies if this is a duplicate thread.
 
What diameter roll pin is used to pin the rocker post in Yella Terra head on a Holden 186? I've got a cylinder head that hasn't been pinned as yet.
 
Thanks all in advance,
 
 
Russell.

1/8"

[madtoranajzedded]

go 3/8 screw in studs bud if can afford .that would be the way to go.will fix the studs propper.

[Bernie]

Russell ,If you are running any sort of valve spring tension I definitely wouldn't go for pins .Get the head machined to take screw in studs .The 3/8 pin is prone to breaking where the roll pin is inserted .It weekens it considerably .Got the money for roller rockers? Best to  save a bit more and do it right so you dont drop a rocker at 6500 rpm and it all goes south from there .