The OTHER thing on the old Bullet IS the intake port .... a fellow needs to DevCon the poop out of one and do some "spare-uh-mintin'" on it to get the velocity (and therefore the torque) up a bit in the middle range.
Quote from: ScooterBob on February 22, 2009, 05:03:55 PMThe OTHER thing on the old Bullet IS the intake port .... a fellow needs to DevCon the poop out of one and do some "spare-uh-mintin'" on it to get the velocity (and therefore the torque) up a bit in the middle range. Or get a 350 head and machine it to fit on the 500 cylinder spigot and go from there.
Uh, yeah .... Joe Mondello IS the "head master" when it comes to Olds stuff ... It was his stuff that inspired me to further tinker with the buddy's drag car to get "fasterness" out of it. I'm really intrigued by your Bullet project - but I'm really thinking that there is even five MORE torques in there than you are hoping for .... I'm thinking "cylinder charging" and burn time vs. crank rotation .... You know the old 340 Dodge trick of switching the offsets on the pin holes to effectively get more dwell at TDC and all that - why not increase the length of the rod (plenty of room!) on the Bullet for the same net effect? The OTHER thing on the old Bullet IS the intake port .... a fellow needs to DevCon the poop out of one and do some "spare-uh-mintin'" on it to get the velocity (and therefore the torque) up a bit in the middle range. Just food for thought .... The worst thing of all of it is trying to get it to run on that miserable azeotropic bag of crap they call motor fuel these days! I have tested some of it - and "Inconsistent" is its name .... I'd LOVE to build a powerhouse, torque-bastage Bullet ... but I'll be pretty happy just to get to RIDE one after THIS winter in Minnesota!! Hahaha!! Perhaps the bug will hit HARD this spring ... we must share a note or two ... perhaps we can make each other go faster!! Hahaha!!
Anybody ever create a four valve head for a Bullet? Lots of folks think 4 valves only work at high RPMs but that's not the case, they can be VERY efficient at low AND high RPMs. They are small enough to keep the air flow speed high at low engine speeds, but have enough combined area to give good breathing at high RPMS.The Ford and Dodge pickup diesel engines each went to four vave heads and got a noticeable power bump, and Ford kept pushrods. Detroit Diesel's Series 60 engines for road tractors have four valve heads and rarely see more than about 2100 or so RPM. Jim Feuling (and others) developed four valve heads for Harley Davidsons and they worked great.Overhead cams might be out for RE's, but I'd LOVE to see a 535 with a nice four valve hemi head, with dual ports for intake and exhaust, two exhaust pipes, a sparkplug in the center of the combustion chamber, and two carbs or fuel injectors. If you're gonna dream, make it in technicolor !
Do you think the added poop will cause the head to leak? Some stock bullets have that problem at 22 hp. The stock bullets have some pretty slim studs holding the head-jug assembly down.