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View Poll Results: Heatsoak using a metal intake.
Myth
35
50.72%
Real
34
49.28%
Voters: 69. You may not vote on this poll
Heat Soak..
Thread Starter
On The Tree
Joined: Feb 2007
Posts: 182
Likes: 0
O.k. So obviously heat soak is real. But to a point, And will that point effect performance?
Couple facts :
1.) So threw traffic and/or at a stop you will begin to see the aluminum intake "heat-soak"
2.) In between runs at a drag strip you can always ice the intake if your not "hot lapping"
I guess you have to weight your options and see whats best for you. I like going to the strip, but streetracing is always going to happen. And if someone pulls up next to me in a cobra after sitting in traffic. I'll be sucking in some hot air. I love the look of the metal intakes, and like the idea of how they can be really cooled down between runs. And if they out-flow a ls6 (since the fast is out of the picture for me) I think im in. Im going to ask a few seasoned veterans to voice there opinion and see what they think.
Couple facts :
1.) So threw traffic and/or at a stop you will begin to see the aluminum intake "heat-soak"
2.) In between runs at a drag strip you can always ice the intake if your not "hot lapping"
I guess you have to weight your options and see whats best for you. I like going to the strip, but streetracing is always going to happen. And if someone pulls up next to me in a cobra after sitting in traffic. I'll be sucking in some hot air. I love the look of the metal intakes, and like the idea of how they can be really cooled down between runs. And if they out-flow a ls6 (since the fast is out of the picture for me) I think im in. Im going to ask a few seasoned veterans to voice there opinion and see what they think.
Originally Posted by Soul TKR
So.... who voted "REAL"? 
Originally Posted by 98_Formula
don't most high end all out setups use a sheet metal intake.... they don't seem to worried about heat soak...
if heat soak was a myth then turbo chargers would not need intercoolers
how was this at the top of this forum yet i was the only one that posted in months
most of you are talking about the intake taking in air that is for the most part cooler than the intake, but in the case of most engines especially cars on this board what engine takes air directly from the outside???? none that ive seen, reguardless of ram air most cars are drawing from the engine bay area. here is where i think the point is to be made
if a metal intake heat soaks it will raise the air temp around it i.e. engine bay thus raiseing the temp of the air coming into the engine reguardless of the speed of the air you are still pulling in warmer less dense air which affects performance, how much??? for most of our street cars the affects are marginal at best. then there is something to be said about moving cars circualting the air under the hood reguardless if the air under the hood is warm your sucking warm air.
so if you have a chance to lower under the hood temps it could be worth it.
most of you are talking about the intake taking in air that is for the most part cooler than the intake, but in the case of most engines especially cars on this board what engine takes air directly from the outside???? none that ive seen, reguardless of ram air most cars are drawing from the engine bay area. here is where i think the point is to be made
if a metal intake heat soaks it will raise the air temp around it i.e. engine bay thus raiseing the temp of the air coming into the engine reguardless of the speed of the air you are still pulling in warmer less dense air which affects performance, how much??? for most of our street cars the affects are marginal at best. then there is something to be said about moving cars circualting the air under the hood reguardless if the air under the hood is warm your sucking warm air.
so if you have a chance to lower under the hood temps it could be worth it.
If heatsoak wasn't real, people wouldn't ice intakes. You wanna say not enough to matter? Then ask how many people on here have underdrive pulleys. They don't improve track times, but guys run them anyway.
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Track times. Went from 13.1 to 12.8. With just the addition of the wieand intake. That being said, i think any intake is better than the regular 97-00 ls1 intake that was on the car.
What part of it didn't you understand? I've never seen a car pick up track times from a UD pulley. Dyno numbers, yeah a few. Big f'ing whoop. Ricer stuff there. If it doesn't improve track times, it doesn't mean much.
THanks. That is good info. I'd much rather see the track times than the feelings. Good stuff!
THanks. That is good info. I'd much rather see the track times than the feelings. Good stuff!
i know heatsoak is real! but the aluminum intake has its goods and bads! i have not experianced aluminum intakes on the ls1 but i sure do know that aluminum intake on cars will have a hot *** intake manifold after a long day compared to the ls1's composite manifold, which is barely warm!
I noticed that Wilson just came out with a composite manifold for the SBC with a carb. What you have to realize is that a prostock car runs carbs. They may have found that the heat in the runners helps atomize the fuel. Who knows.
Heat soak can happen to any engine with any intake depending on length of the drive and how aggressive. You can always buy an intake try it and then sell it if your not happy with it....because I am sure your going to get a lot of opinions on which intake is best. Hope you figure it all out.
in richard holdener's ls1 dyno book he tested the ls6, weiand, fast 90, and bbk manifold against the ls1 manifold on a create motor that was producing 460hp. the test was run with the engine running with ls1 edit, some a/f ratio, long tube headers and accufab 80mm tb.
over ls1 manifold:
ls6-15hp/13ftlbs
weiand-15hp/14ftlbs
fast-20hp/17ftlbs
bbk-28hp/20ftlbs
so from that test,bbk out performed the more exotic fast 90 manifold that costs $800 plus, which in my opinion is way to much for an intake. besides the metal manifolds look better and cost less than most composites and from the test work better and should work good for a d/d car.
over ls1 manifold:
ls6-15hp/13ftlbs
weiand-15hp/14ftlbs
fast-20hp/17ftlbs
bbk-28hp/20ftlbs
so from that test,bbk out performed the more exotic fast 90 manifold that costs $800 plus, which in my opinion is way to much for an intake. besides the metal manifolds look better and cost less than most composites and from the test work better and should work good for a d/d car.