Holley Manifold Testing- TEASER SHOT

[Grimace427]

So we are saying aluminum is better than iron for this application. But is it better than plastic composite? I don't think so.

I'd say the aluminum one is going to last longer, from heat and cool down cycles over the years, but for the benefit of heat soak and decapitating heat, the plastic one has to be better.

:lol:


But I agree, plastic composite would be my choice.

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[Viperbluecobra]

:lol:


But I agree, plastic composite would be my choice.

Damn spell check. Lol

 

[redline727]

:lol:


But I agree, plastic composite would be my choice.

So what would you speculate the reasoning between Holley's material choice? One would think aluminum cost more to source and more to manufacture than composite. Also thinking about the cost of comparable manifolds in the market you would need to stay competitive all while holding gross profit.

Unless, my thinking maybe Holley is better equipped to manufacture an aluminum product due to current product development.

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[Viperbluecobra]

So what would you speculate the reasoning between Holley's material choice? One would think aluminum cost more to source and more to manufacture than composite. Also thinking about the cost of comparable manifolds in the market you would need to stay competitive all while holding gross profit.

Unless, my thinking maybe Holley is better equipped to manufacture an aluminum product due to current product development.

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I'd speculate that this will be mass produced to form to multiple intake bottoms. Top portion is what would remain the same for all engine types and the lower manifold and runners to fit specific engines and years.

That could be cheaper than one specific plastic mold for specific year model car and engine type.

 

[Grimace427]

So what would you speculate the reasoning between Holley's material choice? One would think aluminum cost more to source and more to manufacture than composite. Also thinking about the cost of comparable manifolds in the market you would need to stay competitive all while holding gross profit.

Unless, my thinking maybe Holley is better equipped to manufacture an aluminum product due to current product development.

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My assumption is to better accommodate boost.

 

[UPRSteve]

I have been told that I can release this information:

Results of this will be released beginning of March (Before season opener of NMRA at Bradenton)

 

[UPRSteve]

My assumption is to better accommodate boost.

Boost, Nitrous, weight, inlet, runners, ect.

 

[350Mike]

Plastic thermodynamics are totally different then aluminum, plastic resists heat transfer way better then aluminum. Aluminum conducts and transfers heat very fast. That being said, once plastic hits 130 degrees it takes much longer to loose the heat then aluminum. You ever notice how fast an aluminum air powered tool gets cold the second you pull the trigger? Well if you're into drag racing you would want an aluminum intake, as soon as you hammer that puppy it's going to cool off. The plastic will heatsoak very bad in the staging lanes. This is why heat sinks agents made out of plastic.

 

[Cascadia_302]

Well l know l can put my fingertip onto the S550 intake runner and hold it there with the engine at temp. I would not even consider doing that with an aluminum intake manifold of similar configuration.

 

[350Mike]

Don't speculate... Under hood temps aren't that high. It's not like an exhaust header. Just look up thermodynamics or thermal conductivity. Plastic is a 1, and aluminum is 200. Aluminum is used all over the place to cool things for a reason. Plastic Isn't effective.

 

[Evolvd]

Throw a large chunk of aluminum like a manifold in the same oven at the same temperature and allow it to equal the temperature of the oven, any attempt to grab it with your bare hand will burn you.

No shit? LOL...was that a serious statement? Of course it will eventually reach the same temperature. However compared to iron it will take longer to heat up and will cool down faster...or did you miss the point of the conversation?

:frusty:

Don't speculate... Under hood temps aren't that high. It's not like an exhaust header. Just look up thermodynamics or thermal conductivity. Plastic is a 1, and aluminum is 200. Aluminum is used all over the place to cool things for a reason. Plastic Ian effective.

Agreed. OE engine builders went away from iron to aluminum for weight savings and cost, and it's the same reason why they are going with plastic/composites. Look at any electronic boards...anything with a power supply has an aluminum heat sink...because SUPRISE it has the best heat transfer properties of most affordable metals.

 

[350Mike]

Thin aluminum is the best for intake manifolds. Thick cast aluminum of yesteryear does not perform as well because it takes longer to cool from intake airflow.

 

[UPRSteve]

Here is proof it is on a car and being tested. I have been allowed to post this picture by STANG TV.

I CANNOT GIVE OUT ANY MORE INFORMATION.

Thanks

 

[mustang_guy]

Thats going to fit under the stock hood even without mounts. Thats awesome.

 

[UPRSteve]

Thats going to fit under the stock hood even without mounts. Thats awesome.

That information will be released with the article.

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