I dont know much about intake temps, or have any graphs that compare the truck with and without the spacer (I know there are some on here...) But I don't see how this spacer can slow you down. I dont think its the spacer that is slowing you down in your et... If the plenum is now getting to hot to even touch, I don't think it's the spacer that is your problem.
I know I put the spacer on a few weeks ago, and took it for a ride. I drove the truck hard, and I could tell that when I popped the hood and the motor was hot, the blower was hot, and the intake plenum was not even warm. It was more cool than anything. It was a cold night, but I think the spacer blocks some of the heat coming from the motor/blower from getting back into the intake...
I may be wrong and I dont mean to get involved here when I shouldn't but I don't think you can blame the spacer for a loss of et times... If anything it's helping you and something else is the problem. Just my $0.02
Shane

 

Sure.......but chances are the heat transfer will still be there........now if you used some phenolic board

--Joe

 

Although I have serious doubts, I'll try track testing this again. This time EGR will be disabled. We'll see what happens then. Should be this weekend if it ever stops raining.

 

Most here are in violation of some law. Maybe they are using cut outs, maybe long tube headers, maybe no cats, maybe a non carb certified chip, maybe a non carb certified blower, maybe an intake system which isn't carb certified, maybe using leaded gas.

 

Okay, there has to be someone out there selling phenolic EGR spacers. Or, where can I get phenolic board locally.

 

What is the point of the egr?

 

The egr saves little children by reburning exhaust gas to lower emissions. It also lowers combustion chamber temps by introducing some non burnable gas.

 

does it increase tempatures in the intake?

 

Yup......think about it.......spent exhaust gases that are just exiting the combustion chamber are recirculated back into the intake.

Also remember that at WOT the EGR valve closes.........

--Joe

 

...so what you're wsaying is that if we just drive around all the time at WOT, our intakes would be cooler. I like that idea.




Problem solved in my book.

 

is there any point to running at the track with it off and cork both ends? or sense at wot it closes, it isnt worth doing?

 

My egt gauge says that at cruising the temps an inch from the header flange is around 1300°. I'm guessing by the time that gas travels down the header then up to the egr temps may be around 500°+. 500°+ temps going into the supercharger and through the intercooler only serve to heat up the temps.

 

quote:
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Originally posted by soap


Also remember that at WOT the EGR valve closes.........

--Joe
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My understanding is that it closes at idle as well.

 

Ok so if the EGR is causing too much heat and you install a spacer that thermally isolates the upper intake then the heat generated by the broken EGR has no where to go .. Your ET goes up by 5 100ths -

Mystery solved

 

Yup.......the only time it is opening/closing is when your cruising down the highway.

--Joe