Thread: Slp hood on car may-5-12

Originally Posted by blknbstd

... IDK if i wanna make a port running to airbox or just button it up an let it cool the bay since i have hood spacers..? INPUT?

IMO, just leave it open to cool the bay. They say Ram Air intakes only really function at 120mph+ and you likely won't be doing that very much. Additionally that is for NA engines and as a boosted car, even at 120+ your not going to be forcing more air than the supercharger can suck in anyways so its irrelevant. Just make it look good, make it cool the engine bay, cool the supercharger and the intake and it make serve better than trying to add weight to the hood to make it a functional (sort of) Ram Air hood.

EDIT: BTW looking great so far...

Originally Posted by TLSheff

IMO, just leave it open to cool the bay. They say Ram Air intakes only really function at 120mph+ and you likely won't be doing that very much. Additionally that is for NA engines and as a boosted car, even at 120+ your not going to be forcing more air than the supercharger can suck in anyways so its irrelevant.

wrong and right at the same time. ram air setups function at almost any speed. they dont necessarily start to produce hp until 45 mph and up. its caused by forcing the air in.

right in the aspect that your supercharger is forcing air in faster at any given point than the ram air setup will.

when i went to MMI (motorcycle mechanics institute) in orlando we did a test on ram air set ups in the fueling and electronics class. they had a cbr 600 f4i with a wierd chain driven fan set up. the fan simulated air at speed and was run by the drum of the dyno. it forced air into the ram air set up. 1st we did a run without the hoses hooked up then a run with the forced air. at 25 mph the ram air made around 3 hp and gradually went up with the speed. at 140 mph the f4i made 15 more hp with the ram air than without.

Originally Posted by f3racer

wrong and right at the same time. ram air setups function at almost any speed. they dont necessarily start to produce hp until 45 mph and up. its caused by forcing the air in.

right in the aspect that your supercharger is forcing air in faster at any given point than the ram air setup will.

when i went to MMI (motorcycle mechanics institute) in orlando we did a test on ram air set ups in the fueling and electronics class. they had a cbr 600 f4i with a wierd chain driven fan set up. the fan simulated air at speed and was run by the drum of the dyno. it forced air into the ram air set up. 1st we did a run without the hoses hooked up then a run with the forced air. at 25 mph the ram air made around 3 hp and gradually went up with the speed. at 140 mph the f4i made 15 more hp with the ram air than without.

ram air...transverse mounted engine..........negative horsepower.

I'm interested to see what you did with the hood latch. My body shop guy cut one where they are supposed to be, and he said they were right through a brace for the hood latch.

look in the first set of pics.. I drilled out the spot welds around the latch area then lifted that piece of sheet metal off. I cut some of the fat off of it but its still very ridged, ill get a better pic tomorrow of what i cut away..

wow. i dont know how i missed this earlier. great work. cannot wait to see the finished product.

LMAO. Looky who I just found. Lovin the hood man. You could make a pretty buck or two selling these if the time/materials spent isnt too great...

I think you said you bought another one already??

This is pretty sexy. Sub'd for sure.

Originally Posted by w98seeng

Looks great.

Maybe you can give me a bit of technical advice. I have a mig welder that I bought used. It's a 110v unit 115A unit. I have no gas with it, only flux core wire. Can I use the flux core wire or do I have to have gas? How much is a small bottle and how long will it last (approx)?

Also, what settings do I set my welder to? I tried welding a couple of small pieces of sheet metal together and it justy burnt a hole through, even though it was set on low heat, could I have the feed speed too slow?

Thanks,
Ian

???

Originally Posted by w98seeng

Looks great.

Maybe you can give me a bit of technical advice. I have a mig welder that I bought used. It's a 110v unit 115A unit. I have no gas with it, only flux core wire. Can I use the flux core wire or do I have to have gas? How much is a small bottle and how long will it last (approx)?

Also, what settings do I set my welder to? I tried welding a couple of small pieces of sheet metal together and it justy burnt a hole through, even though it was set on low heat, could I have the feed speed too slow?

Thanks,
Ian

practice practice and more practice buy lots of scrap and mess with the settings.o and body work with flux core is none to good.

^?...

just because the air has to make a turn does not mean it still isnt crammed in there. have you ever seen a turbo that is mounted directly in line with the throttle body? i havent. in turbo cars the air makes multiple bends before in enters the throttle body. ram air at speed has the same effect. its forced into the throttle body.

but that is a completely different concept. the turbo does the work. ram air works on a bike because it pressurizes the intake manifold since it goes straight back. you literally cannot make it useful with the shape of the hood and the placement of the throttle body.

make it look good. functional is for a motor with the right placement.

whatever man. hmmm pontiac grand am with ram air comes to mind. fwd application.
http://www.edmunds.com/pontiac/grand-am/

but instead of thread jacking this guys thread we'll talk about it another time.


to the OP. here is a good read on how ram air itself works. doesnt differentiate between fwd or rwd apps but explains how it creates pressur.
http://www.vararam.com/ramairinaroadcar.html

Originally Posted by f3racer

whatever man. hmmm pontiac grand am with ram air comes to mind. fwd application. we'll talk about it another time.

The ga with ram air is a joke. My wife had one and i unhooked it for chits and giggles and it made no noticable difference.