Re: Phenolic Carburetor Spacers
[Re: pjc360]
#1660977
08/19/14 10:53 AM
08/19/14 10:53 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Quote:
My question is do i take the spacer off and sand the side where it meets the manifold in a figure 8 motion until it's flat and buy 2 new gaskets and try it again. Or is this just going to happen again in a couple of months and would i be better off going to an aluminum 4 hole spacer? Another question, is there better made phenolic carb spacers that don't have warping issues?
(1) yes, you have no choice it is leaking (2) it may happen again, do ya feel lucky, well do ya (3) not sure (alum does expand significantly but it might be evenly but not likely as you know how that goes (Murphys law) (4) I would think Phenolic would be Phenolic but reportedly the very best is a wood spacer (baltic birch plywood iirc), call a cabinet shop & talk to them & inquire how much for them to saber saw one out for you. Get a piece cut from them & you bring it home & drill the 4 corner holes & swab the perimeter of the intake carb opening with dykem then set the piece down on the studs so there is an impression of the carb opening left on the bottom side of the spacer then take it back & have them cut the inside out to those exact lines. You rough mark the OD also depending on how perfect you want the outside dimentions/appearance to be (& (their) time is money). Torque the carb studs reasonably & in a crisscross pattern & not sure if a slightly thicker gasket(s) would help or not (I would think it would). EDIT get a C to C measurement of the bolt pattern & have them drill the 4 holes (reasonably tight/no slop) with their wood bit, regular bits might not work well in wood.
Last edited by RapidRobert; 08/19/14 11:50 AM.
live every 24 hour block of time like it's your last day on earth
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Re: Phenolic Carburetor Spacers
[Re: pjc360]
#1660978
08/19/14 01:26 PM
08/19/14 01:26 PM
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Joined: Dec 2003
Posts: 22,696
Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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The sanding concept concerns me a little bit, that opens the cotton? fibers more directly to the fuel where its is trapped and soaks, which is the likely culprit for any warpage, do you reseal the sanded portion in anyway with a fuel resistant sealant?
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Phenolic Carburetor Spacers
[Re: pjc360]
#1660980
08/19/14 04:30 PM
08/19/14 04:30 PM
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Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard
master
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master
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
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Generally warping is occurring from uneven torque distribution and when heat cycled it takes a set. Cheap gaskets and uneven torque are common causes for warping, even base plates on carburetors. A thicker the gasket generally multiplies the problem. If it were mine I would straighten both sealing surfaces flat again, use a quality gasket and torque evenly. For the best quality gasket available on today's market check out our catalog and a list of our distributors. http://www.superformanceproducts.com/
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Re: Phenolic Carburetor Spacers
[Re: pjc360]
#1660988
08/22/14 08:32 AM
08/22/14 08:32 AM
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Joined: Jan 2003
Posts: 5,443
Indiana
YO7_A66
master
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master
Joined: Jan 2003
Posts: 5,443
Indiana
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""So it was the bottom part of the spacer causing the vacuum leak."" Now you should see some improvement concerning your JETTING & ALTITUDE thread.  A vacuum leak is tough to tune around.
1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
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Re: Phenolic Carburetor Spacers
[Re: pjc360]
#1660990
08/23/14 10:27 AM
08/23/14 10:27 AM
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Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard
master
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master
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
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Quote:
I warm using superformance carburetor base plate gaskets. I torqued the carburetor to 7 ft lbs and i did it in a criss cross pattern a little at a time on each nut. Quick fuel says to torque them at 8 ft lbs so I decided to do 7 that way I could be Cretan I am not over torquing it. I did just buy this spacer a couple of months ago and I sanded the top part but not the bottom. I took the spacer off and sanded the bottom on a flat piece of glass in a figure 8 motion until the entire surface was sanded. And it looked un even on the bottom, spent about an hour making it perfectly flat. For now I put a fel pro 1900 gasket on the bottom and a mr gasket 55 on top because that's all my parts store had, I ordered new super formance gaskets. Put it all back together and it's running better and my idle is steady.
So it was the bottom part of the spacer causing the vacuum leak. I will install the new superformance gaskets when they arrive and if it develops another leak from becoming warped again I will buy a different spacer. I just seen some guys online saying some phenolic spacers are made with better material then others.
Sounds like you did it right from the beginning
Like you say the only other variable to warping is the quality of the spacer itself. Maybe it just fully cured the resin's or the fuel is attacking it, can't say for sure so keep us posted.
I'd have to imagine there is a quality to price difference with these spacers but have no first hand knowledge whose is good and whose is questionable.
Were you not able to reuse our base gaskets?
Thanks for your support and hope you see the quality difference in what we offer compared to our competitors.
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I like and us ethe phenolic spacers from Summit that look like plywood 
