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-   -   improving underhood ventilation (http://www.vettemod.com/forum/showthread.php?t=11528)

Belgian1979vette 06-09-2018 11:05 AM

improving underhood ventilation
 
With the use of headers the underhood temperatures on my C3 can get quite high. I don't want to use the exhaust wrap on the exhaust to reduce this somehow and don't want to buy new headers either.

What would be the best way to improve underhood ventilation without tearing things apart ?

rtj 06-09-2018 12:10 PM

I went through this in FL, here are a few ideas:

- vented my l88 hood (in the v shaped depression).
- opened up side vents behind front tire. Not very noticeable appearance wise.
- return type fuel regulator. It fixed the vapor lock.
- removed front headlights. Left the holes open.
- installed small pusher fan in front of rad.


The pusher fan really helped engine temps at idle.

A chin spoiler is supposed to help too.

OZgreen69 06-10-2018 09:52 AM

I you can find a company that do ceramic coating in your country, do it.
I am still amazed how low the under hood temp can be after a nice track session ! I had the complete system coated inside and out , cannot even burn your leg on the side pipe !

Belgian1979vette 06-10-2018 02:20 PM

Quote:

Originally Posted by OZgreen69 (Post 130432)
I you can find a company that do ceramic coating in your country, do it.
I am still amazed how low the under hood temp can be after a nice track session ! I had the complete system coated inside and out , cannot even burn your leg on the side pipe !

The problem is that the headers are old and have rust inside. The fit really well, which is why I want to retain them.

vette427sbc 06-10-2018 03:49 PM

Quote:

Originally Posted by Belgian1979vette (Post 130434)

The problem is that the headers are old and have rust inside. The fit really well, which is why I want to retain them.

Might be worth it to put them in an electrolysis bath to remove the rust inside so you can get them coated

69427 06-11-2018 06:26 PM

Quote:

Originally Posted by vette427sbc (Post 130436)
Quote:

Originally Posted by Belgian1979vette (Post 130434)

The problem is that the headers are old and have rust inside. The fit really well, which is why I want to retain them.

Might be worth it to put them in an electrolysis bath to remove the rust inside so you can get them coated

I agree. I'm not familiar with the exact process that was used, but the company that ceramic coated my (15 years old at the time) headers managed to get them cleaned up inside and out, and coated them inside and out. They still look great 25 years later.

stingray composites 06-21-2018 06:03 PM

I have kind of figured that the side vents on c3s don't function as well as they should. there is a company that is called track spec that makes vents that you can install on your hood. they have one for the l88 hood and everyone on facebook is saying they get great results from it.

I was looking into getting these c6 vents for mine since my l88 hood has an air chamber
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rtj 06-22-2018 05:05 PM

When I installed the spc a-arms, I deleted those dust shields. That should help ventilate.

bobs77vet 06-30-2018 02:50 AM

do you have the front air damn in place? it makes a huge difference

Belgian1979vette 07-01-2018 07:15 AM

I have a pace car spoiler


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