Jump to content
Volvospeed Forums

Hood Scoop


Ping138

Recommended Posts

YES

digging in the archives*

c3.jpg

c5.jpg

c4.jpg

i was considering doing this myself

yea, ummmm, we have sort of a problem here...

Hey, I am the last person to crap on someone's car... if you like it screw what other people think. But I have going to have to give the big thumbs down on that.

Now the little flushmounted dealie is nice, I do like that, just please nothing sticking up like that!

GaK

Link to comment
Share on other sites

  • Replies 36
  • Created
  • Last Reply

Im not too worried about looks I think it looks fine and im shooting for performance not as concerned with looks my car already has a sweet custom paint job its black with a red pearl coat, I m happy with that, but i do know that reducing engine bay temps is a good move all around, I really am interested in improving performance, Im not worried about cost a buddy of mine is a paint pro and does good work, he custom painted my car including door handles and grey trim for less than a grand.

So Doug you seem to have a respectable viewpoint on performance would you care to elaborate for me on what you were talking about?

Link to comment
Share on other sites

Guest DougK

spring_05g.jpg

I know theres a better picture here, but basicly anything that will let heat escape up through the hood is the best thing imo.

On my SEMA 242 Im building Im venting in alot of places. Its RWD so it varies abit but Im venting just "behind" the radiator, above the turbo and on the other side of the car to keep things symtrical.

You can always just do this:

http://www.pbase.com/towerymt/image/12174685

http://www.pbase.com/towerymt/image/12174686

Link to comment
Share on other sites

Guest volflo who hates the SCHEISSE lo

Personally I'd rather vent the hood to allow air to flow through the intercooler and radiator and out through the hood than ducting air in (then out under the car).

Doug

again Doug is abs right:

It doesnt make any sense to duct cold air into the engine bay wihtout removing the hot air effectively at the same time. I was talking to an engineer at the endurance cup at Nür and he was like: "i cant understand that: Everyody is so keen on putting air into the engine bay. but its most likely to get stuck there and thus the cold air doesnt even get into the bay. So its almost useless. On the contrary you may violate your whole aerodynomics"

i also heard that because of this the intercooler on the Subi's is not very effective (but i only HEARD that)

this is why i wanted to go another route: a inverted scoop (like an rear lifted sunroof). With the air streaming over the hood you creat a low pressure right after the little edge the hot air under hood tends to flow as fast as the air above the hood. so you get a lot more air thru intercooler and cooler and you drag aout the hot air above the cyl head.

i went with an even simpler construction which has the very same effect as above.

DSC00344.sized.jpg

imm113.jpg

as you may see the structure of the mesh is done like a sharks skin ( i hope that helps).

Anyway what i can say is that i got rid of ALL of my temp probs. The oilcooler in the front of my intercooler works so good now that the oil in line is about 15 (!!!!!!!) degrees colder than oil out. Finishing a 9 min round at Nür i now get an icredibly low 90 to 95 degrees water AND oil.

Before that i easily got 125 C in oil (but this may have also been due to slightly cloged oil circulation + that i have my fan now switched on constantly (thermostat removed)

Anyway when i stop the car with the fan runnnig and hold my hand over that hole i can feel a really BIIIIG stream of hot air coming out. Believe me it works very good.

i have somebody now who is rebuilding the whole part under the car from front spoiler lip to the engine frame with a alum planel. the platic "skid plate" is going to be removed.

I hope get less whirl under the car and "speed up" the air stream even more.

Link to comment
Share on other sites

So while I like the ideas here and am now more seriously thinking about the cut out instead of the scoop, my reservation is that this will remain my daily driver for now, and so im not sure how much the turbo will like that hole over its roof in the rain.....

Are we saying that the scoop serves no purpose at all?? Or just less of an overall effect than the cutout?

Oh and Volflo, i love that car!

Link to comment
Share on other sites

Personally I'd rather vent the hood to allow air to flow through the intercooler and radiator and out through the hood than ducting air in (then out under the car).

Doug

What about running a cold air intake piping from the ground and letting it run the air to the turbo housing? Would that even be worth $10 worth of tubing?

~Lee

Link to comment
Share on other sites

you could have a scoop if you could figure how the air would flow, basically it would be trial and error wif cutting apart a hood. But the real way it would work is a wind tunnel. So i would fully support you going ahead and renting out a wind tunnel "actually there is a company, cant remember the details. that does a course in a wind tunnel to show people how it works" and being a super guy that would do research to show the rest of the volvo community what the best setup would be based on actual research.

Link to comment
Share on other sites

Guest DougK

guys, think about this.

Air under the car = lift

Air out through the hood = if not less lift even maybe a little downforce.

Venting it out vs forcing it in is a win-win.

Link to comment
Share on other sites

Looks like he, possibly <_<, cut some holes and stuck some universal scoops on (dime a dozen), then had it painted. I'm sure you could do the same without any trouble or much money.

If you notice they didn't bother to blend them either, if you're actually going to do something like this, at least have whoever's painting it blend them into the hood, aswell. It will look MUCH better. As much as allowable in this case, anyways. :rolleyes:

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.


×
×
  • Create New...