It's really not hard to pop the rockers out and put them back in. Probably
easier than turning the cam on the workbench with all the spring tension on
it. Just run the adjusters all the way down into the head and you can pop
the rockers out very easily.
When you are calculating the combustion chamber volume, remember to include
the small volume for the head gasket (compressed thickness is about .040").
If you don't it will overstate your compression ratio. Technically you
should also check the deck height of the pistons, but that is usually so
small that it is negligible on a roadster.
Gordon Glasgow
Renton, WA
> -----Original Message-----
> From: Daniel Neuman [mailto:neuman@RadOnc17.UCSF.Edu]
> Sent: Thursday, November 10, 2005 4:35 PM
> To: 'Gordon Glasgow'; datsun-roadsters@autox.team.net
> Subject: RE: CC'ing a head
>
>
> Gordon, Ronnie,
> I think that the less stuff I remove from the head the less there is
> a chance of me screwing something up. I just have to decide if I'm less
> likely to screw up if I just remove the rocker arms or if I turn the crank
> by hand.
> I do want to actually CC the head because I am curious what the CR
> is and if its different for each cylinder and I really want to
> try to get my
> CR down to about 8-1.
> Irene has 'authorized' some funds for the roadster fix up so I want
> to get on it before she spends everything we have on the wedding......
>
> Daniel Neuman
> Oakland CA
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