Hey everyone,
Thanks for all the info.
So, it seems that pre-1967.5 motors were SAE, and post 1967.5 were
metric. Funny thing is, this engine is in a 1966.
Ok, so the next question is this:
Can a METRIC head be used on an SAE block? Or were the blocks all the
same? (except of course the R-16/ H20 differences)
If I can use the head, I'll save it. Otherwise, I'll get it cleaned up
to make sure it's good and then I'll sell it.
Eddie
Eddie wrote:
> Hi guys,
>
> Found something that strikes me as weird, and wanted to know what the
> deal is.
>
> I've got 3 engine heads for a 1600 Datsun Roadster. (Have one car, a
> parts car, and part of a 3rd parts car)
>
> 1 is a cast iron head, (my roadster had a forklift motor in it when I
> bought it. Yup, with the forklift cam, oil pan, everything...some
> bonehead literally dropped a forklift motor in the car without making
> ANY changes at all to it. Duh.)
>
> 2 are Aluminum heads.
>
> The cast iron head uses 5/16 x 18 studs for the exhaust/intake manifolds
>
> ONE of my aluminum heads uses the same size English bolts.
>
> my OTHER aluminum head takes 8mm x 1.25 studs.
>
> Is this normal? Were some of these metric while others were English?
>
> Also, I took the water pump off of my spare car, and found a 1" thick
> aluminum "spacer block/plate" between the pump and the engine. My
> other 2 motors did NOT have that, and the book doesn't show one.
>
> What's the story on that?
>
> My questions are more out of curiosity than anything else, but I would
> like to know what's up with this stuff...
>
> Thanks.
>
> Eddie
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