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> Ram Air, combustion air roof scoop and air boxes
timmck69
post Jun 14 2003, 04:23 PM
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Looking for advise on creating air boxes fed from a duct on the roof. My car is a GT4R PCA race car( 2.8 liter) I have seen a few limited pictures of this on other 914 race cars and would like to talk to venders and/or customers who have been through this.
Thanks
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URY914
post Jun 14 2003, 04:28 PM
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you mean something like this...


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Andyrew
post Jun 14 2003, 05:11 PM
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Ouch! actually I think Ive seen this car before, looked nice before.. and I think that that kind of ram air would be most efficiant.
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efrenv
post Jun 14 2003, 05:32 PM
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No. 13 ... bad luck ... (IMG:style_emoticons/default/sad.gif)
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TimT
post Jun 14 2003, 05:39 PM
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Thats my friends car, Tony N, the car and trailer are for sale now (the car has been fixed obviously) The scoop is sheetmeatl, the airbox is lucite/lexan/plexiglass, something like that. In the airbox are 2 k&N filters and a fabricated plenum over the throttle bodies.

Tony now races mini coopers in Grand am and ALMS
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Qarl
post Jun 14 2003, 05:43 PM
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Try here...

http://www.v8914.com/
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URY914
post Jun 14 2003, 05:44 PM
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This was taken at Sebring PCA race. It never seemed to run too good.

I personlly don't think this kind of scoop did anything to improve performance. It did not provide pressured air to the engine as far is I can see. Not when it had to go those two filters.

Paul
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timmck69
post Jun 14 2003, 10:31 PM
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I've seen Tony's car and thats the general idea but the scoop need to be more like the GT1.
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timmck69
post Jun 14 2003, 10:37 PM
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When running my 2.8 at higher rpm we feel that there are two problems with air flow over the roof. 1. The air tumbles and is warmer than ambient. 2. there isn't enough volumn. The ram air may or may not be an added benefit.
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Brad Roberts
post Jun 15 2003, 01:43 AM
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Tim,

Your friends with Tony Nuzzo ?? I'm freinds with the guy he sold his Boxster to in Arizona.

Roger Sheridan runs the cleanest setup I have seen for a top mounted system. He runs two NACA ducts in the top with 2 3 inch hoses leading straight to some custom air boxes he built for the 52mm TWM.

He has a small (almost undetectable) scoop on the targa skin.

I'll get pics..

B
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TimT
post Jun 15 2003, 09:38 AM
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Brad I know Tony through the local chapter of the PCA, He used to be pretty active with DE and club racing, the he started his own ALMS or grand am team racing the new mini coopers, prepared by Bodymotion in south jersey.

I though he sold the boxter to the guys from EBS?
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timmck69
post Jun 18 2003, 05:17 PM
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Does anyone know Tom Gonzales from Santa Fe NM. I saw a picture in a club racing magazine of his car and it may have what I am looking for.
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cha914
post Jun 19 2003, 07:31 AM
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QUOTE
Roger Sheridan runs the cleanest setup I have seen for a top mounted system. He runs two NACA ducts in the top with 2 3 inch hoses leading straight to some custom air boxes he built for the 52mm TWM.



I was thinking it would be cool to do something similar except instead of NACA ducts in the roof, doing them in the sail panels. However what is the airflow situation over the sail panels? I am guessing not nearly as good as the roof...anyone know?

Tony
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brant
post Jun 19 2003, 08:08 AM
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I know tom gonzales... but I don't have any pictures.
A number of the grand junction cars run a ram air also.

Allen Johnsen builds them to pick up off of the roof (I think NACA ducts) and then square clear plexiglass tubes that feed down to each side of throttle bodies.

go to the PCA national club link site. Look for the pueblo/vegas/GPR/and some of the California event pictures. You might see some shots.

brant
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Dave_Darling
post Jun 20 2003, 12:14 PM
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John Rogers in Sandy Eggo runs a small inverted wing all the way across the back of his roof panel. It sticks up only an inch or so, and curves down across the rear side of the roof. Pretty much just shoves air down toward the engine lid grilles.

He said it was one of the best cooling system mods that he made; getting cool air into the engine bay. Not sure if it did anything for power or not.

--DD
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seanery
post Jun 20 2003, 12:18 PM
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If it helps the longevity, I think that's probably good enough, huh? (IMG:style_emoticons/default/confused24.gif)
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URY914
post Jun 20 2003, 12:27 PM
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Why don't more 914 race drivers just run without the engine cover on? OK, maybe you need it for tech, but if you took it off for a race would anyone protest you or would you really get black flagged?
I don't use one on my autox car but I realize the rules are different.

Paul
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Brad Roberts
post Jun 20 2003, 02:32 PM
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Intresting tidbit:

My tube car wouldnt pass sound at Laguna. We taped off the engine lid..and it got WORSE. When we removed the engine lid.. the sound went down and we passed. We run without the engine lid if need be. SCCA is the only group worried about the cars being "complete".

Here is what Roger Sheridan runs.
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Brad Roberts
post Jun 20 2003, 02:35 PM
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And the inside. Roger noted significant gains in power. This is the CLEANEST install I have seen. It is very "undectable" from the outside. I hate the add on crap that looks like its from PEP BOYS.

B
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seanery
post Jun 20 2003, 03:34 PM
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waiting to rebuild whitey!
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damn, he's hardcore...no padding on the cf seat!
That can't be comfy!!!

Did he make that seat?
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