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GLM Exhaust Manifold

Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=46890
Printed Date: March-10-2025 at 4:04am


Topic: GLM Exhaust Manifold
Posted By: mattradintz
Subject: GLM Exhaust Manifold
Date Posted: October-10-2018 at 1:43pm
Does anyone know if this will fit a Pleasurecraft 5.8 in a 1982 Ski Nautique 2001? I called the tech support on the website and they were no help



https://www.hardin-marine.com/p-30056-small-block-ford-302351-5058l-exhaust-

manifold-assembly.aspx



Replies:
Posted By: TRBenj
Date Posted: October-10-2018 at 1:55pm
Pcm 5.8 = 351w... so yes it will bolt up to the engine. Is that the question?


Posted By: hal2814
Date Posted: October-10-2018 at 2:02pm
I’m 90% sure it will. If you want to be 100%, the PCM part number is R028001. See if they can cross reference to that.   


Posted By: KENO
Date Posted: October-10-2018 at 2:18pm
It'll bolt up, but you'll notice it says Indmar and Barr replacement.

They are different than a PCM and you'll need to get risers to match these manifolds.

They bolt on with only 4 bolts per side instead of 8 allen headed ones like the PCM. Not a problem at all with getting a good seal though.

On a 351 without GT-40p heads, spark plug access is a little harder, you need a box end wrench to break them loose, a spark plug socket on a ratchet doesn't fit all 8 plugs.

Once you do it once, plug removal is pretty easy.


Posted By: mattradintz
Date Posted: October-10-2018 at 2:26pm
KENO,

This was exactly what I was looking for! Thanks!!! I have a leak in each of my manifolds (bottom side) from the previous owner, not winterizing properly I believe. . I had my neighbor weld the one and its working for now, however, I'm Iooking at replacing them both this winter. My risers are in good shape, so I don't want to replace if not needed. Looks like I'll just order the Sierra 18-1996 replacements. Thanks again!


Posted By: rolleronariver
Date Posted: October-10-2018 at 2:46pm
I replaced mine this past spring due to the same leakage. The problem isn't them leaking on the outside, the problem is when they start leaking on the inside. Once mine started on the outside I decided it wasn't work taking a chance and destroying my engine. Make sure you order new gaskets for both the manifold and the riser as you'll probably tear the old ones up when you remove them. Also, not sure if you've tried to take the bolts out but you'll probably need to soak them in some kind of penetrating oil for a while first. I kept spraying pb blaster on about once every week or two all winter last year before I started trying to remove the bolts. I then took a 20v impact wrench with the right size allen wrench and just lightly tapped them out. I didn't have a single issue getting any of them out and mine is a 92 model. Good luck. I did a lot of praying too! LOL

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92 Sport nautique


Posted By: rolleronariver
Date Posted: October-10-2018 at 2:52pm
Originally posted by mattradintz mattradintz wrote:

KENO,

This was exactly what I was looking for! Thanks!!! I have a leak in each of my manifolds (bottom side) from the previous owner, not winterizing properly I believe. . I had my neighbor weld the one and its working for now, however, I'm Iooking at replacing them both this winter. My risers are in good shape, so I don't want to replace if not needed. Looks like I'll just order the Sierra 18-1996 replacements. Thanks again!


What he's talking about is that the risers might not match up and bolt up, If they don't match up perfectly it could allow water to go back into your engine and then you'll have a real issue.

I bought my manifolds from skidim.com because I wanted to know for sure that everything was going to work. I did use my existing risers and we had no issues at all. Skidim is a little more expensive but probably worth the cost for the peace of mind. That's just my opinion.

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92 Sport nautique


Posted By: TRBenj
Date Posted: October-10-2018 at 3:03pm
Why not just buy the oem PCM replacement manifolds and reuse your old risers?


Posted By: phatsat67
Date Posted: October-10-2018 at 3:15pm
Originally posted by TRBenj TRBenj wrote:

Why not just buy the oem PCM replacement manifolds and reuse your old risers?


Also recommended


Posted By: mattradintz
Date Posted: October-10-2018 at 5:34pm
I didn't know that PCM made replacements. I thought they were all aftermarket.


Posted By: rolleronariver
Date Posted: October-10-2018 at 5:39pm
These are the ones I used and they worked great!

https://www.skidim.com/prodinfo.asp?number=R028001" rel="nofollow - skidim

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92 Sport nautique



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