NEW PISTONS

WELL AFTER THE LONG WAIT, MY CUSTOM WIESCO PISTONS SHOWED UP LAST NIGHT. WHAT A PRETTY SITE, THEY HAVE A SMALL DISH, AND LARGER VALVE RELIEFS TO SUPPORT THE LARGER FERRERA VALVES/HIGH LIFT CAM THAT I AM GONIG TO RUN. I CARRIED THEM, AND THE ENGINE KIT TO THE MACHINE SHOP TODAY. THEY STILL HAVE TO BORE THE CYLINDERS, AND GRIND THE CRANK. ONCE THAT IS DONE, THEY WILL TEST FIT THE MOTOR TO MAKE SURE OF THE VALVE/PISTON CLEARANCE. THEN I WILL CARRY IT TO THE CRYO TREATING PLACE, AND GET IT BACK TO THE MACHINE SHOP FOR FINAL BUILD. I TOOK SOME PICS OF THEM TODAY, BUT WAS IN A RUSH, SO I WILL LOAD THEM ON A DISK, AND POST THEM TOMORROW. IF ANY ONE IS INTERESTED IN SOME LIKE THIS, PM ME, AND I WILL GIVE YOU THE JOB # SO YOU CAN ORDER YOUR OWN SET FROM WEISCO. THEY ARE 87MM (+1mm BORE) W/ 7cc DISH, & +1mm LARGER VALVE RELIEFS SHOULD GIVE 10.5:1 COMP. RATIO DEPENDING ON HEAD GASKET THICKNESS.

Awesome, 1mm is about .040 right?

yep 1 mm is 0.0394 what are you doing about your intake manifold theres a guy on streetsourse who flow tested the manifold and said due to its ass design that it cant get about 150 max hp with out a turbo or a bottle of juice. just curious man great luck! i cant wait to see it

THAT WOULD BE A 10-4! 1mm=0.03937"
I DID THE FIGURES, AND IF MY MEMORY SERVES ME RIGHT, BORING THE MOTOR OVER 1mm WILL MAKE IT 2234 CC (TRUE B2200) & 136.327 CI.

sorry no pics yet, i went to load them on a disc, and the batteries in the camera were shot, maybe tomorrow.

pancaked,

as far as the intake, it's at the machine shop aswell, they are cleaning it up real good, i am going to get the head & intake, and do some light porting and polishing, which will help the cfm of both, all this with the larger intake and exhaust valves should help the engine "breath" a little better. i have my new 38 weber waiting to go on, and, have "made" a cold air intake (read in engine forum the thread GOT WEBER...WANT COLD AIR?). i have a computer dyno that shows the motor will make 190 hp at the flywheel when done, with a 25 shot of nos it showed 205 hp, and with a 50 shot, 225 hp. i don't think i will run the nos if i get 190 out of the motor, in the intrest of it lasting any amount of time, and them amount of $$ i am sinking into it.

CFM.. cubic ft. per miniute ( air flow)?

88LX,

THAT WOULD BE CORRECT SIR!, ALTHOUGH I DON'T KNOW IF THAT IS THE CORRECT ACRONYM FOR ENGINE FLOW MEASUREMENTS, I KNOW IT IS FOR A FART FAN, AN ELECTRIC FLEX-A-LITE FAN, AND ALSO CARBURETORS. I READ SOME WHERE THAT A WEBER 38 WILL FLOW RIGHT AT 400 CFM, AND A 32/36 WILL FLOW 325-350 CFM.

The acronymn is understandable, just not fluent with it's use... yet

I can comprehend that somewhat, and the variables that could determine that, but how do meter CFM???

I HAVE HEARD A TERM "FLOW BENCH TESTED" MY GUESS IS THEY USE A MACHINE TO FORCE AIR THROUGH A CARB OR MANAFOLD, AND MEASURE/METER THE MAXIMUM AIR FLOW, THE CFM IS JUST THE UNIT OF MEASURE LIKE INCHES OR MILLIMETERS.
IF THE STOCK ONE DOESN'T FLOW ENOUGH, OR WORK WELL, I MAY HAVE TO MAKE A CUSTOM ONE, OR DO SOMETHING LIKE THIS. YOU CAN SEND A MANAFOLD OR CYLINDER HEAD TO A PLACE CALLED EXTRUDE HONE, THEY WILL PUMP A POLISHING COMPOUND THROUGH ALL AIR/WATER WAYS, AND IT POLISHED THE SURFACE TO ALMOST A MIRROR LIKE SURFACE, WHICH WITH OUT THE RESTRICTIONS OF THE CAST SURFACE WILL FLOW MORE AIR/WATER THAN STOCK. THIS IS EXPENSIVE THOUGH, I SAW WHERE THEY CHARGE LIKE $500 FOR A 4-CYL HEAD.