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Re: Tunnel ram options above the carbs [Re: mopar dave] #2937106 06/26/21 08:53 PM 06/26/21 08:53 PM
Joined: Jan 2003 Posts: 2,533 Alexandria, LA B Blucuda413 master
Blucuda413 master B Joined: Jan 2003 Posts: 2,533 Alexandria, LA	Guys I know not all tracks enforce the rules totally but you should look at "Flash Shields" in the rule book. I've seen many sidelined because they didn't meet those requirements. It's not a new rule I know it goes back to the 50's.

Re: Tunnel ram options above the carbs [Re: mopar dave] #2937108 06/26/21 09:03 PM 06/26/21 09:03 PM
Joined: Oct 2007 Posts: 4,206 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,206 New York	The round wire, in cross-section, is a surprisingly dirty (non aero) obstruction, and also disturbs air around it. It's the reason screens do not protect jet engines against bird strikes: ruins the mileage. Boffin Emeritus

Re: Tunnel ram options above the carbs [Re: polyspheric] #2937190 06/27/21 09:02 AM 06/27/21 09:02 AM
Joined: Jan 2003 Posts: 2,361 PA 7 70HemiGTX top fuel
70HemiGTX top fuel 7 Joined: Jan 2003 Posts: 2,361 PA	I wish I had more room under my hood scoop to run taller air cleaners or velocity stacks. I can only fit about 2" high filters on top of my carbs. I know it is not enough air flow and not high enough above the carbs. At one time I had a set of velocity stacks with the foam elements. Those seemed to work great. They were about 4" tall.

Re: Tunnel ram options above the carbs [Re: polyspheric] #2937198 06/27/21 09:21 AM 06/27/21 09:21 AM
Joined: Jan 2007 Posts: 8,031 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,031 Mt Morris Michigan	If a jet engine can pick a man up and suck him into the engine, i would think a jet engine would suck the screen in. I agree, anything over the opening is not the best. Open uncovered works best, but these screens work very well for street driving and not losing much. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: Tunnel ram options above the carbs [Re: mopar dave] #2937577 06/28/21 09:51 AM 06/28/21 09:51 AM
Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york hemi-itis I Live Here
hemi-itis I Live Here Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york	Scoop with a pair of K&N filters.No difference in AFR with or without filters. Without filters there is fuel being sucked out causing fuel vapor towards the windshield at speed. HEMI-ITIS has no cure. My condition is fully BLOWN!!

Re: Tunnel ram options above the carbs [Re: polyspheric] #2965203 09/18/21 09:56 AM 09/18/21 09:56 AM
Joined: Jan 2007 Posts: 8,031 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,031 Mt Morris Michigan	I ran the car down the track and tested a few things last saturday. First off i found the filters with filter tops to be slower than the velocity stack with a screen lid. Ran a 6.60@105.89 8th mile. 6.544@106.30 with stack and a screen lid. 6.541@106.33 with stack and no lid. So, the screen is not really hurting enough for me to run without it. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: Tunnel ram options above the carbs [Re: mopar dave] #2965205 09/18/21 10:17 AM 09/18/21 10:17 AM
Joined: Jan 2003 Posts: 2,915 A shed in England Tig master
Tig master Joined: Jan 2003 Posts: 2,915 A shed in England	Home made Perspex scoop with RC2 4" filter. Unfortunately a hard landing after a big wheelstand broke it somewhat . The next one will have a 3mm Aluminium base plate . Only had one decent pass before breaking it (9.57 @ 141.??). '74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03

Re: Tunnel ram options above the carbs [Re: Tig] #2965207 09/18/21 10:36 AM 09/18/21 10:36 AM
Joined: Jan 2007 Posts: 8,031 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,031 Mt Morris Michigan	Haven't tried one yet, but i'm thinking the oval filter may be the best way to filter on a tunnel ram. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: Tunnel ram options above the carbs [Re: mopar dave] #2965258 09/18/21 03:15 PM 09/18/21 03:15 PM
Joined: Jan 2004 Posts: 4,564 Motor City 6 6PKRTSE master
6PKRTSE master 6 Joined: Jan 2004 Posts: 4,564 Motor City	I run screens on my carbs for the street and put my Super Shaker over them. At cruise nights I cap them with the Moroso carb caps. Don't trust anyone dropping something down the carbs, just in case. 1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.

Re: Tunnel ram options above the carbs [Re: Hot 340] #2965333 09/18/21 06:52 PM 09/18/21 06:52 PM
Joined: Oct 2007 Posts: 4,206 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,206 New York	If a screen is large enough it's harmless, but per square inch it's a restriction compared to fully open. The round wire used is a very dirty aerodynamic shape compared to a teardrop, ellipse, etc. Boffin Emeritus

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