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White90GT
10-16-2004, 09:13 PM
Anyone know what a set of box stock TFS Twisted wedges flow at 25" of water? I want to compare my home porting results.

I did some home work on it and then my machinist did a little work in the chamber around the valves to unshroud them a bit. He gave me the after results, but I didn't ask for the before results last night.
Anyway without further ado:
281cfm on the intake
227 cfm on the exhaust
Both at .600 lift, at .700 lift they started falling off a bit I believe.
Shaggy
10-17-2004, 09:01 AM
I used to have the formul floating around to do that but after a quick google I did find this site and it seem sto be at least closee off the top of my head... http://www.wallaceracing.com/calcdchg.php
63T-Bolt
10-17-2004, 11:01 AM
Should convert over to 297/240 . According to Total Engine Airflows website your on about par with their 185cc package for the TW heads. Just visit their site to compare with.
White90GT
10-18-2004, 07:04 AM
So TEA's numbers come from using 28" of water? If so, man I'm good LOL. I didn't do a whole lot of work to these things. I opened the exhaust ports to a 1215 gasket (to match the header ports), rounded out the area that goes from the port down to the bowl/seat area, and polished the intake side and rounded out that area to the bowl/seat area. Then my machinist used a cutting tool on has valve seat grinding tool that actually cut the area just above the valve seat on the chamber side. Not bad indeed.
Otis!
10-18-2004, 07:39 AM
Nice results Carl! Pictures?
MUSTANG BILLY
10-18-2004, 08:23 AM
Hi..I'M new on this site..I dont mean to bump in your thread..but i have an old set of Trick Flow Alum Street Heats 202/1.60..bye chance do hall now what they flow also..Thanks..Mustang Billy
White90GT
10-18-2004, 10:23 AM
I don't have the heads in my possession at the moment, I did find Trickflow's flow data for the stock twisted wedges:

As Cast






Lift (in.) Valve Intake (CFM) Exhaust (CFM)


0.100 63 53
0.200 141 107
0.300 205 144
0.400 233 171
0.500 251 187
0.600 251 193



As far as the old track heats, sorry I don't know, you might check trick flow's website, but I think their data is only on the new ones. Welcome to PoMoFo.