Re: Gen3 Mopar Performance Intake
[Re: cbusters]
#2296036
04/29/17 12:42 PM
04/29/17 12:42 PM
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Joined: Jan 2003
Posts: 17,875 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,875
S.E. Michigan
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Oh, I remember that issue.
There are two versions of that particular manifold, EFI and carb.
Both versions are (or at least, were) machined for OEM stock 5.7 O ring style gaskets.
About two years after crate engines that used that intake started selling, through customer feedback, MP found certain blends of gas, with the carbureted versions of the intake, would "swell up" the O rings over very long term use.
Subsequent contact with the "intake gasket guy" at Chrysler proper + the OE supplier for the O rings confirmed: They are not intended for long term exposure to liquid gasoline. Short term and vapor is OK.
By then, another crate engine had been released, with the predecessor to the tall DP intake on it. It did not have the O ring machining....That engine had pink fiber gaskets. Spoke with engineer for that program, he knew what the deal was. There were similar 5.7 fiber gaskets set up in the product line "just in case".
At the time it would have been damn near impossible...like an act of Congress....to change the machining on the intake. Requiring a new blueprint, PPAP, and all that "OEM" stuff that most other folks who make intakes don't have to deal with... Chrysler was bankrupt at the time, and the only reasonable solution was to recommend fiber gaskets and leave the machining alone. So that's how it happened.
You actually "can" use the O rings over the short term, and it will run just fine for you, but over time they will break down and swell up...it kind of depends on how often you run it and other factors. Although they were intended for a "dry" manifold, they can handle fuel for awhile.
BTW the big threaded hole in front is where the oil goes, there's no water in a Gen3 intake.
Rich H.
Esse Quam Videri
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Re: Gen3 Mopar Performance Intake
[Re: cbusters]
#2297328
05/01/17 07:24 PM
05/01/17 07:24 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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Find stock style gaskets made from gasoline resistant material, like FKM. Like this: http://www.rockauto.com/en/moreinfo.php?...478&jsn=478An initial glance shows little out there in the way of flat gaskets. Ask Roadhazard to make you some Superformance gaskets. R.
Last edited by dogdays; 05/01/17 07:55 PM.
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Re: Gen3 Mopar Performance Intake
[Re: cbusters]
#2297388
05/01/17 08:59 PM
05/01/17 08:59 PM
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Joined: Feb 2011
Posts: 4,302 Nebraska
72Swinger
master
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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Cometic has flat gaskets.
Mopar to the bone!!!
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Re: Gen3 Mopar Performance Intake
[Re: cbusters]
#2297708
05/02/17 01:18 PM
05/02/17 01:18 PM
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Joined: Jan 2003
Posts: 17,875 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,875
S.E. Michigan
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Pretty sure P5153757 is the one, but it's been a long time, double check before ordering.
Rich H.
Esse Quam Videri
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Re: Gen3 Mopar Performance Intake
[Re: cbusters]
#2340284
07/20/17 12:49 PM
07/20/17 12:49 PM
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Joined: Feb 2011
Posts: 4,302 Nebraska
72Swinger
master
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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I do not know what size, but im sure one that would work could be sourced. Doubt you would find a factory replacement without it also having an intake under it.
Mopar to the bone!!!
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Re: Gen3 Mopar Performance Intake
[Re: cbusters]
#2340307
07/20/17 01:19 PM
07/20/17 01:19 PM
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Joined: Jan 2003
Posts: 17,875 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,875
S.E. Michigan
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I don't think I kept a copy of the bill of materials for that one. However if memory serves (and it very well be failing miserably so don't hold me to it), I think the oil cap is most likely the same one as used on Ansen/Keith Black/Mopar Performance Gen 2 hemi valve covers. Possibly this one https://www.summitracing.com/parts/dcc-5249949Might want to go to Ansen and see if they will share any dimensions.
Rich H.
Esse Quam Videri
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Re: Gen3 Mopar Performance Intake
[Re: cbusters]
#2341540
07/22/17 04:54 PM
07/22/17 04:54 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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It appears that the MP cap is the correct one, just discontinued. Now to find one! That looks like the cap S&W and other install on their fab rear-ends. You might want to check with them.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Gen3 Mopar Performance Intake
[Re: pittsburghracer]
#2341571
07/22/17 06:03 PM
07/22/17 06:03 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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If so type in rearend cap in the search bar for lots of options.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Gen3 Mopar Performance Intake
[Re: Supercuda]
#2341622
07/22/17 07:50 PM
07/22/17 07:50 PM
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Joined: Jan 2003
Posts: 2,046 MD
RTSE4ME
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,046
MD
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