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SugarLake
06-02-2010, 12:26 PM
Does anyone know if it makes a difference between the open center gasket and the 4 hole gasket? I used the an open center gasket that came with my remanufactured carb between the carb and the spacer, and the 4 hole gasket from skidim between the spacer and the manifold. This is on an 87 Prostar 351W.

Here are some examples:

Open center gasket:

http://www.summitracing.com/parts/SUM-G1418/

4 Hole carb gasket:

http://www.summitracing.com/parts/SUM-G1417/

4 hole spacer gasket:

http://www.skidim.com/prodinfo.asp?number=RM0054B

TMCNo1
06-02-2010, 12:41 PM
Does anyone know if it makes a difference between the open center gasket and the 4 hole gasket? I used the an open center gasket that came with my remanufactured carb between the carb and the spacer, and the 4 hole gasket from skidim between the spacer and the manifold. This is on an 87 Prostar 351W.

Here are some examples:

Open center gasket:

http://www.summitracing.com/parts/SUM-G1418/

4 Hole carb gasket:

http://www.summitracing.com/parts/SUM-G1417/

4 hole spacer gasket:

http://www.skidim.com/prodinfo.asp?number=RM0054B


I did a carb rebuild last Summer and all I know is the Skidim gasket was twice as thick as any others I've seen, so I used the Skidim gasket over the others I had.

Luv2Ski
06-03-2010, 09:41 AM
Would be shocked if there was any measurable difference in performance, generally you would select the gasket that matches your intake/spacer. The next time you rebuild the carb you may have a little additional cleaning with the open one as some gunk will build up in the crevice.

SugarLake
06-04-2010, 01:29 PM
Thanks, I never even thought of that but that makes perfect sense. So:

Open manifold flange = open gasket
4 hole manifold flange (or in this case spacer) = 4 hole gasket

I used the wrong one, I think I'll change it just to be safe.

Bellinghamster
06-05-2010, 01:16 PM
Open or closed to match the manifold, but also go with a thick one. I had all kinds of trouble with fuel boiling in the float bowls, causing the floats to sink and flood the engine after run/ shutting off / restart. I ended up plugging off the exhaust crossover ports in the intake manifold and putting on a thick carb base gasket, and haven't had a problem since.