C2 Manifold to Exhaust Pipe Nuts
Where can a person buy the steel self-locking, acorn-like type nuts that secure the exhaust pipes to the manifolds on an L79? I have looked at Long Island and Paragon with no luck.
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Re: C2 Manifold to Exhaust Pipe Nuts
Michael,
I always go to the advertisers index at the top of the TBD. There may be other sources but you could start with Richard Fortier...see his ad text below. Also check the Driveline ads and search the Archives. Good Luck.
Pete
Richard Fortier Fasteners
HUGE fastener selection- over 200,000! Many NOS unusual bolts, washers, screws, new and used. All are re-plated cadmium, zinc, clear, or black phosphate. Most historic headmarks are on hand. NCRS member since 1974 NCRS #82
10401 Jayne Valley Lane
Fenton, MI 48430
Phone: -
Re: C2 Manifold to Exhaust Pipe Nuts
Here's Richard's phone no...810-750-1472Comment
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Re: C2 Manifold to Exhaust Pipe Nuts
Paragon #6498K.Comment
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Re: C2 Manifold to Exhaust Pipe Nuts
John------
I'm not sure, but I don't think the Paragon reproductions are 100% correct.
The nuts used for 1963-82 Corvettes were GM #3829086. However, I think that the design of this part may have changed at some point. I think the "early style" had tiny "slits" encircling the crown and, somehow, this design provided the locking feature. Later, the 3829086 became a standard, distorted thread lock-nut as seen in the Paragon reproduction. Before they were discontinued from GM fairly recently and for at least 20 years prior, those sold by GM were the latter style.
It's also very possible that BOTH style were originally used in PRODUCTION. Perhaps the different styles both met the GM specification and were supplied by different manufacturers.In Appreciation of John HinckleyComment
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Re: C2 Manifold to Exhaust Pipe Nuts
FWIW: My 1970 originals have the tiny "slits." And a comparison with the Paragon items reveals a slight, but easily detectable difference.
I initially didn't post because the OP was about a C2 application -- which may or may not be the same as C3. Since Joe widened the issue, I jumped in.TerryComment
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Re: C2 Manifold to Exhaust Pipe Nuts
Thanks guys. I called Richard and he had the exhaust nuts I needed. Plus he had the air cleaner cover wing nut and oil pan 3/4 inch drain plug I had been looking for.Comment
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C2 Manifold to Exhaust Pipe Nuts; '66?
Guys,
So would Marsden nuts be correct for my '66? Or Stover nuts? I know I can find Stover nuts, but I'm not certain about finding the Marsden nuts.
Thanks,
GaryComment
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Re: C2 Manifold to Exhaust Pipe Nuts; '66?
Gary-----
I don't think they were Marsden nuts, per se. I think they were a type of nut called "Flex Lock" or something close to that. They are somewhat similar to Marsden configuration but they have a reduced diameter top.
As far as what was originally on your car, I strongly suspect it was the "Flex Lock" type rather than the Stover. I think these were the most common, if not only, style used during the 60's and early 70's. However, the only way to know, for sure, would be to have the original nuts that came on the car.In Appreciation of John HinckleyComment
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Marsden nut
Does anyone have a close-up photo of a Marsden nut? I spoke with Richard Fortier who says he doesn't have any Marsden nuts, but he'd like to see a close-up photo so that he knows what to ask some of the fastener suppliers he deals with.
GaryComment
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Re: Marsden nut
Gary-----
I just checked McMaster-Carr, my "old standby" for such items. I think the attached link is pretty much the exact nut that was used.
In Appreciation of John HinckleyComment
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Re: Marsden nut
The McMaster-Carr nut is not like the original. Upon comparing it to the original one my 63 supplied by RJ I can now see it's all on its own. Highly unlikely you will find it in any catalog.
Maybe Jorjorian will post nice pic on an original. JDComment
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Re: C2 Manifold to Exhaust Pipe Nuts
Here's the McMaster-Carr Flex-Top Locknut (part # 94820A242), just so everyone knows what is being discussed.
GaryComment
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