Why turbo your car and get only 160whp? You can get there NA anyway for 2k.
#121
People making more N/A power than me have a lot more work and $$ than I have , but I'm sure there are exceptions. I'm not making excuses, but I'm still running a stock intake tube with just a cone filter, and a crappy exhaust on the dyno. I still have not hooked up the VICS yet. as long as were "bench racing" I think I'll meet my goal of 140 rwhp/130 tq...
#132
It's not the valve area that counts, it's the "curtain area": CIRCUMFERENCE x LIFT. This gives 4 valve heads a bigger advantage over 2 valve heads than valve area would suggest.
2 valve heads with torturous port shapes need much more cam duration than 4 valve heads for 2 reasons:
1) the valvetrain mass from the pushrods and heavy valves means the opening and closing ramps are very slow
2) the port flow takes time to build velocity after initial valve opening or something like that
Popstoy on miataforum has a 160 whp '99, with a stock header. He basically has complete headwork, lightened valvetrain, biggish cams, a Greddy Blue, and a rebuilt block (not sure about rods and pistons). Work was done by Rebello.
2 valve heads with torturous port shapes need much more cam duration than 4 valve heads for 2 reasons:
1) the valvetrain mass from the pushrods and heavy valves means the opening and closing ramps are very slow
2) the port flow takes time to build velocity after initial valve opening or something like that
Popstoy on miataforum has a 160 whp '99, with a stock header. He basically has complete headwork, lightened valvetrain, biggish cams, a Greddy Blue, and a rebuilt block (not sure about rods and pistons). Work was done by Rebello.
Last edited by JasonC SBB; 01-18-2008 at 12:07 PM.
#135
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It's actually 159.9whp on what I believe is a hogged-out 01 header. Not sure what the cam setup is. I have also heard $4500 in the block itself; the $10k includes installation of that hot motor by Rebello, as well as dyno time to get it tuned correctly.
If I could only convince him to ditch the stupid "Greedy" kit, as he calls it, and pick up a Megasquirt...
If I could only convince him to ditch the stupid "Greedy" kit, as he calls it, and pick up a Megasquirt...