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CC Advertisers
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02-27-2007, 01:48 PM
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CC Member
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Join Date: Feb 2006
Location: Columbus,
OH
Cobra Make, Engine: Shell Valley- 390 FE, 4 speed toploader, 3.50's
Posts: 249
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Not Ranked
Intake- to polish or not to polish?
Just looking for some opinions on polishing an intake manifold. I have heard some people say that the rough cast texture acts as thousands of "heat sinks", and that polishing will cause a hotter intake charge of fuel...but I see alot of polished manifolds.
Just for opinions, what is your take on this?
Greg
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02-27-2007, 07:09 PM
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CC Member
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Join Date: Feb 2006
Location: Columbus,
OH
Cobra Make, Engine: Shell Valley- 390 FE, 4 speed toploader, 3.50's
Posts: 249
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Not Ranked
Hmmmm....62 views and no responses. I know it would be "ok", as again, I have seen alot of polished intakes. I am just looking for a legit reason not to do it. In fact, I might even be begging for a reason or two not to do it, before I take the die grinder to it and start a long boring agonizing process. LOL
Seriously though, can anyone attest to the "heat sink" thing, or give an honest reason why NOT to polish?
Thanks,
Greg
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02-27-2007, 07:42 PM
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CC Member
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Join Date: Aug 2006
Location: Jacksonville,
Fl
Cobra Make, Engine: Just a collection of parts right now...
Posts: 298
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Not Ranked
maintenance is the only reason that comes to mind to NOT polish. You have to keep after it to have it look like day one. The heat sink idea would work in theory. I don't have any way to test it though.
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02-27-2007, 08:04 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
An alternative is to put clear 2 part Automotive paint on the new Virgin manifold or the freshly glass beaded aluminum. It holds up exceedingly well and cleans easily.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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02-27-2007, 08:15 PM
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Senior Club Cobra Member
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Join Date: Aug 1999
Location: Carlsbad,
CA
Cobra Make, Engine: Previous owner of SPF#1938, with a Keith Craft 496ci Genesis 427 side oiler, 667 FWHP, 633 FWTQ, 560 RWHP, 550 RWTQ.
Posts: 1,303
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Not Ranked
__________________
Jim Woodard
Don't interfere with somethin' that ain't botherin' you none.
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02-27-2007, 08:38 PM
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Senior Club Cobra Member
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Join Date: Jan 2004
Location: McAlester,
Ok
Cobra Make, Engine: Lonestar LS427, Keith Craft 496 Genesis, 649 hp, 668 ft-lb, TKO-600, Dynatek Stack EFI
Posts: 204
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Not Ranked
I've not had any fuel heating issues either. If your worried about maintenance use Zoopseal. 3 years and I haven't done anything but wipe it of with a wet cloth.
Brad W.
__________________
A good friend will come and bail you out of jail...but, a true friend will be sitting next to you saying, "Damn...that was fun!"
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02-27-2007, 08:35 PM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Glendale,
AZ.
Cobra Make, Engine: Cobray-C3, The 60's body lines on todays chassis technology
Posts: 2,302
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Not Ranked
I like Jet-Hot or ceramic coating on my intakes for a couple of reasons. 1st they do not dis-color right at the exhaust crossover and look crappy like all paint does with time. Second is they clean up so easy and look new for a long time. I would guess that it also helps with your heat concerns as it is an advertised benefit.
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03-01-2007, 01:27 PM
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CC Member
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Join Date: Feb 2006
Location: Columbus,
OH
Cobra Make, Engine: Shell Valley- 390 FE, 4 speed toploader, 3.50's
Posts: 249
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Not Ranked
Thanks for the replies. I am not too worried about the maintenance part, and with your advice. I think I might go ahead and polish it. I once had trouble with my 390 in my truck- it would run fine for about 10-15 minutes then shut off. Although I never did find the problem, one thing I thought it might have been was vapor lock, which is why I was somewhat concerned about polishing it. Thanks again.
Greg
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