Re: Old skool - holden 186 and push rods/rocker Q's
Mon, 06 December 2004 22:24
Most of us old Holden types went the other way - put the older heads on the newer motors to gain the adjustable rockers The other way is to just chuck the nonadjustable rockers and use the 186 ones, but you will need to put studs in the head where the bolts used to be - a relatively trivial task.
To adjust, I was taught to turn the crank so as to set the cam to 'closed' for the relevant valve (and you can do them in pairs, so there is only 3 crank positions needed). You then spin the push-rod with your fingers while tightening the rocker nut, until it just starts to get tight, but before it starts to push the top of the lifter in (assuming hydraulic lifters). You then tighten a further 3/4 of a turn and lock it off.
It your case, I guess if you have to turn the bolt more than 1 turn after it hits the lifter (for a valve that is meant to be closed) to get it tight, then you need shorter push-rods. Getting ones the exact right length might prove practically impossible; I'd be going the adjustable route if I were you ...
Mon, 06 December 2004 22:24
The other way is to just chuck the nonadjustable rockers and use the 186 ones, but you will need to put studs in the head where the bolts used to be - a relatively trivial task.
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