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Manifold Studs ( Length )

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Manifold Studs ( Length ) #1
Spitz Matthew T PA, SK, Canada Sign in to contact 1973 MG MGB GT 1973 MG Midget	Topic Creator (OP) May 29, 2015 01:12 PM Joined 12 years ago 633 Posts

I have an exhaust manifold here in which I would like to spot weld some studs to ( bolts ) at the downpipe flange

My present manifold....I used nuts and bolts, and it was a right pain in the arse,

Can someone please measure the length of the protruding studs...the length below the flange....not the entire length.
I know if they are too long it wont work....too short....same thing

Next time I have it off, I will be installing this one ( my flange gasket is leaking anyway )

Thanks

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Re: Manifold Studs ( Length ) #4
Spitz Matthew T PA, SK, Canada Sign in to contact 1973 MG MGB GT 1973 MG Midget	Topic Creator (OP) May 29, 2015 02:24 PM Joined 12 years ago 633 Posts

Well that was quite a rude PM Mr. Tanner

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Re: Manifold Studs ( Length ) #5
ErnieY Ernie Y Albatera, Alicante, Spain Sign in to contact 1976 MG MGB GT	May 29, 2015 03:21 PM Top Contributor Joined 12 years ago 19,528 Posts

Real part # CHS2513 and 1 5/8" long.

IMG_5507.JPG 44.9 KB

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Re: Manifold Studs ( Length ) #6
Boris67MGB Richard Boris Kings Park. NY 11754, USA Sign in to contact 1967 MG MGB	May 29, 2015 03:59 PM Joined 13 years ago 1,142 Posts

Best bet: buy stainless studs & use brass nuts; & you will never have a problem. I did that 20 years ago & haven't looked back & experience frozen/rusted fasteners since then.

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Re: Manifold Studs ( Length ) #7
Spitz Matthew T PA, SK, Canada Sign in to contact 1973 MG MGB GT 1973 MG Midget	Topic Creator (OP) May 29, 2015 06:52 PM Joined 12 years ago 633 Posts

Thanks for that part #... may well order.

Apart from the one idiotic PM, thanks for the responses.

Reason for the question is, I will be needing to replace the gaskets, so thought I would rather not deal with nuts and bolts when reassembling. Tough to measure while installed, plus, I'm guessing the manifold threads are done for...as my replacement has nuts and bolts also....presently resting in PB blaster.

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Re: Manifold Studs ( Length ) #8
favedave David Church Saint Joseph, MO, USA Sign in to contact 1967 MG MGB GT "Marilyn" 1967 MG MGB GT "Marilyn" 1995 Ford Probe "The Probe" 1995 Ford Probe	May 29, 2015 09:43 PM Top Contributor Joined 13 years ago 3,768 Posts

I've done it both ways, with the studs and nuts and with flange bolts. The six (6) Flange bolts are easier to install and remove, which I just did for my S/C install. I've had no leaks between the bottom of the header and the 2 into 1 down pipe. The donut gaskets sealed perfectly. Chase all the threads with a tap and use anti-seize, and torque them all equally to about 20lbs and you should be fine.

Replacing the intake/exhaust manifold studs and brass nuts on the head proved a bit more problematic. The two (2) short studs on either end of the head, and the four (4) studs for securing the cast iron header and supercharger intake have the same fine threading on both ends, so you won't find them in most parts stores. It's Moss (me) or one of the other usual suspects for those. Thankfully they are cheap, even including shipping. Again, running a tap into all of the holes in the head is great insurance for a tight seal...

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Re: Manifold Studs ( Length ) #9
RonnieMac Ron McDonald Rosthern, SK, Canada Sign in to contact 1952 MG TD 1971 MG MGB	May 29, 2015 10:17 PM Top Contributor Joined 17 years ago 3,386 Posts

In reply to # 2999595 by Spitz Thanks for that part #... may well order.

I have six of the CHS2513 here in Rosthern if you're passing by - or I'll be in PA next week.

You might consider using bolts on the outer two positions on the manifold. I understand that those positions are more subject to damage.

1952 MGTD 15539
1971 MGB GHN5UB237226

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Re: Manifold Studs ( Length ) #10
ErnieY Ernie Y Albatera, Alicante, Spain Sign in to contact 1976 MG MGB GT	May 29, 2015 11:33 PM Top Contributor Joined 12 years ago 19,528 Posts

In reply to # 2999595 by Spitz Apart from the one idiotic PM

Now I wonder who that might have been from grinning smiley

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Re: Manifold Studs ( Length ) #2
ErnieY Ernie Y Albatera, Alicante, Spain Sign in to contact 1976 MG MGB GT	May 29, 2015 01:41 PM Top Contributor Joined 12 years ago 19,528 Posts

Re: Manifold Studs ( Length ) #3
Spitz Matthew T PA, SK, Canada Sign in to contact 1973 MG MGB GT 1973 MG Midget	Topic Creator (OP) May 29, 2015 02:21 PM Joined 12 years ago 633 Posts

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