 911 engine intake manifold studs |
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| Cfletch |
 Jul 25 2026, 11:00 AM
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#1
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Member  Group: Members Posts: 247 Joined: 30-January 14 From: Santa Barbara Member No.: 16,941 Region Association: Southern California  |
Got a CIS engine that has been converted to carbs and want to finally swap my intake manifold studs to a longer length to allow for spacers to be used to avoid a hot start/perculation issue I have been having. What length studs are needed for this?
I bought a while back the stud kid from PMO, but I think they sent me standard length ones? Length seems too short with the spacers. Seems like 51mm length is the go to but want to confirm. Part numbers would be appreciated! Thanks! |
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| Luke M |
Jul 25 2026, 01:28 PM
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#2
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Senior Member Group: Members Posts: 1,562 Joined: 8-February 05 From: WNY Member No.: 3,574 Region Association: North East States 
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QUOTE(Cfletch @ Jul 25 2026, 10:00 AM)  Got a CIS engine that has been converted to carbs and want to finally swap my intake manifold studs to a longer length to allow for spacers to be used to avoid a hot start/perculation issue I have been having. What length studs are needed for this? I bought a while back the stud kid from PMO, but I think they sent me standard length ones? Length seems too short with the spacers. Seems like 51mm length is the go to but want to confirm. Part numbers would be appreciated! Thanks! If you purchased the PMO intake heat insulator kit it should come with the correct length studs. I thought the same thing when I opened my kit up but all was fine. I put a set on my 2.7 so kinda hard to measure the overall length now. Just take a few measurements before you install the studs to make sure you have room for a wave washer and nut. |
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