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Correct gasket for Edelbrock Intake |
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fmahannah
AMC Addicted Joined: Nov/20/2010 Location: Dahlonega, GA Status: Offline Points: 520 |
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I appreciate your offer but I want to pull the intake anyhow so I can do a proper check of pushrod length with the pushrod length checked and recheck the condition of the lifters, etc.
I searched for posts on intake gasket, will try a search for valley pan. Thanks |
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74 Javelin AKA Ghost
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Ken_Parkman
AMC Addicted Joined: Jun/04/2009 Location: Ontario Status: Offline Points: 1814 |
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I've had one air gap that had too high a casting above the ports on one side, and this excess material bound on the cast protrusion on the head for the valve cover. This did not allow it to sit down on the valley correctly, and there was an internal leak at the intake ports. It acted a little weird, but the real problem was it would suck oil especially after closing the throttle from high load. Machined the top of each side a little and everything was fine.
As for the baffle the air gap is a completely different shape and a stock style baffle cannot be used. To prevent pcv problems you should use the stock valley pan gasket. This combo is clearly not as good as the factory design for oil separation, but it seems to work. I've found the best is the factory system of both the valley pan gasket and the factory intake baffle, but as long as you have either of these things you seem to be OK. But if you have neither be prepared for a smoke show.
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fmahannah
AMC Addicted Joined: Nov/20/2010 Location: Dahlonega, GA Status: Offline Points: 520 |
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The manifold came with the small baffle for under the PCV valve. Mine is down in the valley correctly but I mistakenly used Black Ultra RTV around the intake ports and I am pretty sure that gasoline has washed it away and now sucking oil pretty bad.
This time will try the gas proof spray copper on intakes and gray ultra on water ports, with right stuff for end seals. |
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74 Javelin AKA Ghost
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THE MENACE
AMC Addicted Joined: Nov/04/2008 Location: So. California Status: Offline Points: 4438 |
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Edelbrock Air Gap with the provided baffel under the PCV, clean all surfaces with acitone, metal valley pan gasket with gaskacinch around intake ports (both sides), grey silicone sealer around water ports (thin coat both sides) and a bead across the front and back of the intake, install and let cure for 24 hours before filling cooling system. This has always worked perfect for me.
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Former Owner of:
The Craig Breedlove "AERO AMX" Still Owner: SS/AMX #9 replica (THE BIG MENACE) 70 AMX 416, EFI, Nash 5 speed 70 Javelin 401, 727 (Wife's car) 72 Gremlin Autocross Project. |
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71AMX4014SPD
Supporter of TheAMCForum Joined: Jul/02/2007 Location: United States Status: Offline Points: 1138 |
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Do you also coat the intake bolt threads with a sealer? I've seen some seep oil up past the bolt heads.
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1968 Javelin 360 727 B/W/R
1970 AMX 390 4spd Bayshore Blue 1971 Jav/AMX 401 4spd B6 |
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fmahannah
AMC Addicted Joined: Nov/20/2010 Location: Dahlonega, GA Status: Offline Points: 520 |
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Yes I do use sealer on the bolt threads.Will check them for oil when I pull the intake.
Thanks |
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74 Javelin AKA Ghost
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fmahannah
AMC Addicted Joined: Nov/20/2010 Location: Dahlonega, GA Status: Offline Points: 520 |
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The first time I installed the manifold it sealed fine, and I beat the heck out of the engine while testing the new carb. Just something I must have screwed up this time when I put it on after the cam swap. |
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74 Javelin AKA Ghost
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THE MENACE
AMC Addicted Joined: Nov/04/2008 Location: So. California Status: Offline Points: 4438 |
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Good point! Yes I do. I knew I was forgetting something while I was typing. And flat washers help get a more consistant torque on the bolts too.
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Former Owner of:
The Craig Breedlove "AERO AMX" Still Owner: SS/AMX #9 replica (THE BIG MENACE) 70 AMX 416, EFI, Nash 5 speed 70 Javelin 401, 727 (Wife's car) 72 Gremlin Autocross Project. |
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69 ambassador 390
Supporter of TheAMCForum Joined: Nov/22/2009 Location: Peoria, AZ Status: Offline Points: 3539 |
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X2
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Steve Brown
Algonac, Mi. 69 Ambassador sst 390 84 Grand Wagoneer 69 Cougar XR7 65 Fairlaine 500XL 79 F-350 Super Camper Special |
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irish13jeff
AMC Apprentice Joined: Aug/13/2011 Location: Florida Status: Offline Points: 181 |
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Love the Mr. Gasket Ultra seals. http://www.summitracing.com/parts/MRG-5844 On aluminum intakes dont use the rubber seals that sometimes come with it. Instead apply a 1/4 bead of black permetex down the front and rear of block face where the intake will rest on it . Allow 15 min to pass for permetex to set up before setting the intake down on it . Also invest in some new intake bolts at your local parts store. Mr. gasket intake bolt kit for a Chevy will work, and makes it nice when getting things lined up.
Edited by irish13jeff - Aug/15/2011 at 7:27pm |
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Please don't tell my parents I'm a truck driver..... They think I'm a piano player in a whore house...
http://www.legionofjeepers.com |
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