Ram Air TGP

Started by TurboGTU, August 13, 2003, 11:50:24 PM

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maximage

Thanks for the excellent insite Jeff, its good to see you taing some time off from working so hard. You are right about the ram air thing. My intent with it was the latter of your guess. Cold Air Flow. I'm kind of pining at ways to get cold air to the nuclear heated engine compartment. If the TGP winds up being a car I try to push past the 13's, I will definately need this. The goal for the car, depending on if I keep it, is to build a 12 flat street car, also capable of daily commuting. I've done it in numerous imports, and a few domestics, but nothing as odd ball as the TGP. So, any insight you may have including cold air possibilities will be greatly appreciated. Thank You, and keep up the killer tuning work!!!
90 TGP- Mods, yeah I have them...
90 DSM Turbo 5-speed
02 Beetle GLS

Look! I finally updated my sig!!

TGPilot

Very true...triple digit speeds are optimum for "Ram Air". To know what speed needs to be achieved it would need to be figured the bore and stroke of the motor, the actual ID" and length (volume) of the intake system to include the flow capabilities of the heads...blah blah blah. :wink:  Where I was going with the reverse facing cowl "intake" systems actually working, is that there is flow that will go into them not have vacuum from a venturi effect because the flow passes over the intake first. There is positive pressure at the base of a windshield that allows rear facing cowls to work without having to make the flow of air work to enter the intake. Me saying that there is 15lbs of pressure at the base of a windshield might have been mis-interpreted that the intake would have 15lbs of sustained positive pressure in it like it was turbo or supercharged. It would be nice it it was that easy!!

Question of the day...what is the speed that must be achieved for "Ram Air" to be effective on a "stock" TGP or TSTE?  :shock:

Jeff M

Umm, yea, close enough 8) .  As for the speed at which there would be a few psi of extra air pressure from a Ram Air on a TGP, pretty much the same as any car with a Ram Air Hood Scoop, some might need to be taller than others to see gains, or front mount but it all boils down to the fact the TGP stock or chip?d is not even going to see 100mph or more trap speeds so, till that happens, Ram Air looks good, but I like the mean looking hood louvers we got, long as they stay on  :)

Jeff M

TGPilot

Trap speed no....but I did always enjoy taking the ricers to the top end of things on the highway to see just how fast they thought they were. Maybe that is why my Tranny cooked so soon after I got it from Waskie!! :lol:

Black Pheonix

When i was thinking about doing it, i was planning on putting a scoop, box, whatever in or just behind the lower front valance panel and plumb the air to the turbo,  it would look stock as long as you are not on you hands and knees, and would force the air up into the turbo.
1990 B-TGP

        Black Pheonix

TurboGTU

WOW! Thanks for the input guys.
I know on N/A cars that ram air could do better at high speeds but I've got good gains at just 90 mph. The ram air my brother used on his Taurus SHO droped his 1/4 mile by a second. He had used just a cone filter on the mass ...then a cold air intake..but nothing realy good for gains then whe he went ram air it boosted the funfactor.

I guess size does matter on the ram air. His ram air used a old Mustang 2.3l air silancer cut in halve and used vent tube from a dryer...cool huh. Prob getting like 2psi at just 60mph.

So imagine what 2psi at the inlet of the turbo could do....won't it multiply it to like 6psi more (give or take) the turbo doesn't have to strugle to make....I could be wrong.

But then again any outside fresh air would do good for this engine.
Turbocharged 88 IMSA Beretta GTX <-dam stright.
90 ASC/McLaren Black TGP.

Powermaster slowed my progress like I was piloting the Queen Mary herself--

TGPilot

Well I would think the bigger the scoop the more ram air pressure you would have...but then how big is too big that it becomes as aero-dynamic as a brick? 8)