|
Title: Where do the extra 41 horses come from? Post by: 48ida on December 14, 2007, 18:47:52 pm Seems I might be missing out some horsepower! On the bench my engine came in at 152, and this other set up is claimed to have done 193.
I can see some obvious differences that might make engine 2 have a little more horses in the stable, but 41? Am I missing something guys? My set up consists of this: 82mm Berg forged crank 90.5mm Mahle barrels & pistons ( total seal rings ) Engle FK8 cam with straight cut timing gears Eagle race rods 040 cast cylinder heads ported & polished by Jeff Denham valves 44 x 37.5 compresion 9.5 to 1 CB perfomance 1.4 ratio rockers 48 IDA's on skat trak ported maniolds Pheonix 1 3/4 inch merged header with A1 Turbo muffler Berg equaliser pulley Vs. engine 2 76mm Revmaster Crank 94mm Cima Barrels and pistons eagle 5.325” forged H beam rods Fk8 Cam Scat lifters Scat 1.4 rockers C/R 10:1 CB Performance street Eliminators 44x37 Valves / Ported By Jeff Denham 13 pound flywheel Berg Chromoly push rods Magnum Straight cut gears MSD 6AL Ignition system Pheonix 1-2/4” header A1 Header 48 IDAS Title: Re: Where do the extra 41 horses come from? Post by: Brown-nose on December 14, 2007, 19:51:43 pm one was dynoed in the UK,the other in the states ;D ;)
Title: Re: Where do the extra 41 horses come from? Post by: Cheesepanzer on December 15, 2007, 18:23:14 pm While there are some critical differences (bore/stroke for example), I'm willing to bet the majority of it is related to different dynos.
The 76x94 engine combo would likely produce more hp where your 82x90.5 would produce more torque. No telling about those heads, but I run Denham heads and know how well they flow. ;) You didn't mention your rod length in your 82 stroker, but check the rod ratio differences to account for some hp/torque differences. Then there's the simple state of tune of each engine. Timing, jetting, air/humidity, fuel, etc... |