Core plug part number? |
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AlfaDon ![]() Senior Member ![]() Joined: September-18-2011 Location: San Leandro, Ca Status: Offline Points: 407 |
![]() ![]() ![]() ![]() ![]() Posted: July-01-2024 at 2:33pm |
Hi,
Does anyone have the part number for the core plugs on the outside of the exhaust manifolds on a GT-40 engine? There are 2 of them on each manifold. They measure appx 1.125" and I can find them in that dimension. From what I've read they are placed in the hole against a shoulder and then you dimple the convex side. Do I order the exact size on the opening? Thanks, Don
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TRBenj ![]() Grand Poobah ![]() ![]() Joined: June-29-2005 Location: NWCT Status: Offline Points: 21165 |
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Might want to mention what brand of manifold… doesn’t sound like a PCM.
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AlfaDon ![]() Senior Member ![]() Joined: September-18-2011 Location: San Leandro, Ca Status: Offline Points: 407 |
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Thanks Tim.
I figured GT-40 would be enough. It's a PCM 5.8 late 90's vintage. Manifold is an RO28001 I believe I've found a Melling MEP-10B that should work. I'll report back tomorrow. Thanks, Don
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TRBenj ![]() Grand Poobah ![]() ![]() Joined: June-29-2005 Location: NWCT Status: Offline Points: 21165 |
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Got a pic? Have never seen a pcm manifold with core plugs like you describe, GT40’s included. Sounds like an osco or Barr replacement?
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AlfaDon ![]() Senior Member ![]() Joined: September-18-2011 Location: San Leandro, Ca Status: Offline Points: 407 |
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Hey Tim,
You're right, it is an Osco. I guess I wasn't paying attention. Thanks
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KENO ![]() Grand Poobah ![]() Joined: June-06-2004 Location: United States Status: Offline Points: 11015 |
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Here's a link to a thread with some pictures from a few years ago. . Here's one picture from that thread. Old original on the left, new from Nautiqueparts on the right with PCM cast in the corners ![]() Flyweed bought new 351 PCM manifolds that didn't have the raised lettering from Nautiqueparts. They did say PCM on them and they had 2 plugs like Don mentions. NP told him it was from a new different supplier The PCM is cast into them Later in the same thread, Tomahawk bought the same thing too. |
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AlfaDon ![]() Senior Member ![]() Joined: September-18-2011 Location: San Leandro, Ca Status: Offline Points: 407 |
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I remember my old manifolds were like the one’s Keno posted. I remember that they had stickers on the raised lettering :)
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