bonnet venting

Post by **03turbo** » Fri Oct 03, 2008 4:19 am

Hi all
Wondering if a bonnet vent mounted on a diesel turbo will assist in cooling the air intake piping? Popped my bonnet after a run down the freeway and the intake was pretty hot.
Maybe a heat shield as well?
Any opinions?
And would it be worth the effort wrapping all the piping before and after intercooler to help stop heat soak.
Thanks

Post by **q_ship** » Fri Oct 03, 2008 9:04 am

do you have a snorkel?

Post by **just cruizin'** » Fri Oct 03, 2008 10:55 am

Don't wrap anything in the engine bay, it will just trap moisture. You could be thermal coatings. After the intercooler not before, intake will be hot after the turbo therefore any heat it can radiate before the intercooler will help. heat shield may help, though I wouldn't worry about a vent to much

Post by **03turbo** » Sat Oct 04, 2008 5:22 am

Yeah I have a snorkel and have removed the factory inlet piping to the air box with 3". Seems to be soaking up heat from the engine before it even gets to the box.
Would aluminium piping dissapate and/or reject heat better than the factory rubber radiator style hoses?

Post by **nastytroll** » Sat Oct 04, 2008 8:32 am

Aluminium is very good at heat tranfer, so would proberly soak up more heat then the rubber.

A bonnet vent would help if you can get the air to flow out the engine bay, preferably down past the gear box. But with a bonnet vent it will let the engine bay fill with water easier on water crossings.

Post by **phil94delica** » Sat Oct 04, 2008 9:26 am

If the engine isnt running hot then its probably not a big issue. Heat wrap is good till all the piping rusts out and falls apart so its best to keep away from the stuff in a 4wd.

Post by **thehanko** » Sat Oct 04, 2008 9:30 am

an air vent facing the windscreen of the cab could help draw the hot air out of the eingine bay and may help somewhat, but probably not a whole heap as the radiant heat from the engine will still heat it up.

Post by **daveo** » Sat Oct 04, 2008 12:19 pm

03turbo wrote:Yeah I have a snorkel and have removed the factory inlet piping to the air box with 3". Seems to be soaking up heat from the engine before it even gets to the box.
Would aluminium piping dissapate and/or reject heat better than the factory rubber radiator style hoses?

stainless steel is far better at reflecting heat than ally so that might be an option

Post by **nastytroll** » Sat Oct 04, 2008 12:23 pm

but once hot stainless gets hot it will hold the heat

Post by **03turbo** » Sun Oct 05, 2008 8:16 am

cheers
I'll just stick with what I have i think as the vehicle is running extremely well with the minor mods i have done to intake...intercooler next

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