SeanR

Can you borrow my car for a week?

JWise

I always pop the hood after a drive for all the reasons mentioned above.

SeanR

Jarrod also takes the wheels off so he can inspect for dirt on the wheel liners.

inactiveuser1

Sean,
Being it's supercharged as long as I get to clean the tires good my way lol

dr bob

Doesn't everybody do this? Dust the wheel well liners and the wheels, wipe calipers and hubs/hats so they look new again for the next ride. Gotta say though that this is a LOT easier with the lift...

andy-gts

Rennlist Member




Join Date: Jan 2009
Location: MA
Posts: 1,957

--------------------------------------------------------------------------------

I used to pop it open because of the scorching underhood temperatures. But after I installed the modified belly pans, the engine never felt that hot anymore, so I stopped doing it.




what sort of belly pan do you have other than original????

my engine with headers gets so hot the fan comes on everytime in the summer on shut down

Andy Kay

After reading this thread I popped my hood. It looks like I'll be "painting" the cam covers during the Top End Refresh. Chunks of the finish have come off/lose around the word PORSCHE. ARRHHH!

Barry Chan

pop open hood to let hot air out and to release pressure from the radiator cap, check for leaks, smell, smokes, fluids, nest, leaves, cleaniness...but not everytime tho.

17prospective buyer

As for the hood open vs closed heat dissipation, well, there are no free lunches in physics.

linderpat

I virtually disassemble the car, and ship the various peices out for replating, steam cleaning, wet sanding of all painted surfaces with 2000 grit, repolymerization of all plastic bits, and so forth after each drive. It's cool because everything comes back in bubble wrap, and it's like Christmas in July, over and over again

CJ8 2 928

Raising the hood is like taking the Bridle off the Stallion after a hard run.

Brent

I use the discreet look when in public and the full Monty when at home in the privacy of my garage.

depami

Yes it gets hot. Air flow from fans or driving should help keep temperature as low as possible.

No, there is no free lunch in physics but could opening the hood have benefits?

After driving, if the hood remains closed, exit of heat is impeded and everything in the engine compartment gets heat soaked more than while driving. If the hood is opened, the heat will rise and exit rapidly, more rapidly than closed with fan running, thus minimizing heat soak.

I am currently fighting “crumbling electrical syndrome” in the engine bay.

I wonder if this phenomenon would be lessened by religious hood opening after driving.

Also, given a properly functioning cooling system, does a spirited drive generate more engine compartment heat than a leisurely drive?

ptuomov

They are stock pans, they are just modified to fit with the turbo system. There's nothing "trick" about them, other than that they needed to be modified a bit by cutting off a duct section at the rear of the front pan, removing the steel air guides and drilling some relief holes for the rear pan. Since you're with high likelihood running the stock pans already, this is not going to help you.

There's always the option of thermal barrier coating your headers, if they are not yet coated. That makes a difference in terms of underhood temperatures. Check with your engine builder.

If you don't mind the looks, you could also put 968 TRS style NACA ducts on the hood and direct the air flow towards the headers with a hose. I assume that you don't have the stock intake tubes fitted anymore.

By the way, can we see some photos of the engine compartment?

Rob Edwards

Hey Tuomo-

Check out this thread, post 15. Andy had been working on a CF intake plenum, not sure what the status of that is.

https://rennlist.com/forums/928-foru...ot-needed.html