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#1 |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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Got new intake manifold gasket...do I need the "heat riser restrictor"?
Since I don't have smog, and my choke is electric, do I need the heat riser restrictor thingy?
The heat riser restrictor is that little metal piece up in the top right corner. ![]() |
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#2 |
yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,826
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No.
I never used them either.
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Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale |
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#3 |
Registered User
Join Date: Feb 2004
Location: Hodgenville, Ky
Posts: 735
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If you don't use the restrictor, you're intake will get warmer, raising the temperature of the intake charge. This is the opposite think you want. If you are creative, totally seal the passage off on both sides to keep the intake cooler. You will notice that on all serious performance intakes, this passage is non-existant. I seal mine off totally to keep the air charge cooler, and to keep the underside of the intake cleaner. Oil will carbonize when it touches the hot intake, just take the stock splash shield off of a stock intake to see what I mean.
Mike |
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#4 |
Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
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You can run more timing on a non heated intake Some gasket kits acutally come with the things to block the center ports off .
Mr gasket sells some gasket with a printed seal that do not have a hole in the center |
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#5 |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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Hmm..wonder what I could use to SEAL it, nevermind just restricting it!
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#6 |
You get what you pay for
![]() Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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A little heat in the intake is a good thing for a street engine. It will let the fuel atomize a lot better. If kept cold the fuel will stick to the intake floor much easier. This is not a race engine you are working on here. Use the restrictors and be done with it. If you don't let a little heat get to it, it will run like crap until it gets warm. I know you are in Cali, but the engine still gets cold and must run until it gets up to temp.
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Mike 1985 Chevy C-10 |
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#7 | |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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