Good points. This is my first roadster project and there have been the usual
surprises. I've done a few 240z's and was thinking, being another Datsun,
would make it easier. Obviously not.
So, I shouldn't have said "of course" as I'm guessing a lot along the way.
Honestly, the header was in better shape so I went that route.
Linda gave me a link to a good source for a shorty h20 and it's on its way.
Thanks again Linda, and all.
-bill
On Feb 20, 2012, at 11:36 AM, John F Sandhoff <sandhoff@csus.edu> wrote:
>
>> My '68 Roadster project continues to crawl...
>> It came with a stock exhaust manifold and a nice looking header,
>> so I went the route of the header, or course.
>
> I've got to ask, why "of course"? Past posts have discussed factory
> manifold vs aftermarket headers, and my recollection is that if you
> have the correct factory manifold, in good shape without any cracks,
> you're usually better off using it rather than an aftermarket header.
> Nissan actually did a splendid design job on most of the bits on these
> cars, and reportedly their manifold is a better match than aftermarket
> attempts.
>
> Good manifolds are also rare and expensive, so a good header is
> a good substitute if you don't have a manifold available. (key word
> being good, there's also lots of past discussion on flange width,
> proper washer spacing, etc etc). But it's still a substitute.
>
> As far as heat and the starter, yes that's a concern. And wrapping
> the header can lead to early header failure (traps too much heat).
> Jet-Hot ceramic coatings help a lot, I understand, but I have no
> personal experience. A gear reduction shorty H20 starter is a great
> choice.
>
> My opinions, of course...
>
> -- John
> John F Sandhoff sandhoff@csus.edu Sacramento, CA
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