Holley carb rebuild?
Thread Starter
Drifting
Joined: Jan 2002
Posts: 1,411
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From: Dandridge TN
Holley carb rebuild?
Any advice or experiences that you guys can help me out with? Also the carb to intake gasket is shot and I need to replace it. The old one didn't look like it was sealing too good on the back side of the intake. Any recommendations on a gasket for a Holley 650 mounted to a performer intake spread bore. Thanks in advance.
Burning Brakes
Joined: Nov 2001
Posts: 787
Likes: 1
From: Toronto Ontario
Re: Holley carb rebuild? (Steve Adkins)
If your current gasket is still in good shape I suggest you spread a bit of silicone on both sides of the gasket just like butter and re-install your carb. Just hand tighten the cab bolts and wait till the silicone sets-up "overnight" and the re-tighten the bolts and you are done no more leakes.
Senior Member since 1492
Joined: Aug 2000
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From: Just because I'm paranoid doesn't mean people aren't out to get me...
St. Jude Donor '09
Re: Holley carb rebuild? (Steve Adkins)
I can't help you with the rebuild. Too many parts for me to keep track of. :lol:
Holley book recommends a new gasket anytime the carb is removed. I don't think you need a special gasket. If you must torque, I can check the specs but I think it's 100 in lb---not foot lbs! You don't want to snap these studs :nono:
Len
[Modified by 1970 Stingray, 12:57 PM 5/14/2002]
Holley book recommends a new gasket anytime the carb is removed. I don't think you need a special gasket. If you must torque, I can check the specs but I think it's 100 in lb---not foot lbs! You don't want to snap these studs :nono:
Len
[Modified by 1970 Stingray, 12:57 PM 5/14/2002]
Burning Brakes
Joined: Dec 2000
Posts: 962
Likes: 0
From: Carlisle PA
Re: Holley carb rebuild? (Steve Adkins)
Well, if it's a squarebore Holley and your putting it on an Edlebrock Performer #2101, you'll need a plate from Edlebrock to fix the seal problem your having on the secondary side. I think the part number is #2732 (not totally sure) and costs about $7. It consist of a 1/8" plate and 2 carb to intake gaskets. What it does is help seal the area where the intake was cut to accept a quad carb (big secondaries). With your squarebore carb there isn't enough meat on the intake to make a good seal and you end up having vacuum leaks/sucking gaskets. What you saw with the carb to intake gasket is the norm when this adapter isn't used.
[Modified by 70PurpleLS7, 1:04 PM 5/14/2002]
[Modified by 70PurpleLS7, 1:04 PM 5/14/2002]
Thread Starter
Drifting
Joined: Jan 2002
Posts: 1,411
Likes: 0
From: Dandridge TN
Re: Holley carb rebuild? (70PurpleLS7)
I am pretty sure that the carb is square bore. The secondaries are larger than the primaries and the secondaries is where I am not getting a good seal. I'll check around for the adapter plate and try it. So do you guys think that I need that thick gasket?
Burning Brakes
Joined: Dec 2000
Posts: 962
Likes: 0
From: Carlisle PA
Re: Holley carb rebuild? (Steve Adkins)
I am pretty sure that the carb is square bore. The secondaries are larger than the primaries and the secondaries is where I am not getting a good seal. I'll check around for the adapter plate and try it. So do you guys think that I need that thick gasket?
Thread Starter
Drifting
Joined: Jan 2002
Posts: 1,411
Likes: 0
From: Dandridge TN
Re: Holley carb rebuild? (70PurpleLS7)
70PurpleS7,
I assume that the adapter would act as a heat discipator also wouldn't it, and with a gasket on top and bottom of the shield that should be plenty of seal.
I assume that the adapter would act as a heat discipator also wouldn't it, and with a gasket on top and bottom of the shield that should be plenty of seal.
Race Director
Joined: Mar 1999
Posts: 10,258
Likes: 1
From: Calif.
Re: Holley carb rebuild? (Steve Adkins)
I am pretty sure that the carb is square bore. The secondaries are larger than the primaries and the secondaries is where I am not getting a good seal. I'll check around for the adapter plate and try it. So do you guys think that I need that thick gasket?
A squarebore carb is one like most Holleys or AFBS in which the primary and secondary venturis are the same diameter.
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