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I use the 480 Venola 4.600+5 pistons which calls for a piston to wall clearance of 0.008-0.010 at the skirt. With your bore diameter of 4.310 I...
It's usually 1 psi will produce 100 hp.
Mr. Blown Volvo, It sounds to me that you really don't know the CR, your trusting the guy you bought it from? If I were you I would measure it;...
Before we start the motor we remove the plugs and roll the fuel up to the hat. When we are rolling up the fuel the oil pump is also charging the...
I currently use a check valve in the line going from the oil pump to the motor and to the accumulator. When the motor starts the accumulator is...
Usually a 990 pump is too big for a BBC setup like yours, unless you have a pump loop. I have a few questions: What barrel valve you are using?...
Are you using a crank trigger? I would recheck your timing again just to be sure.
What do your plugs tell you? What are you using for a barrel valve? What is your boost pressure, etc. When you ask a question on this site you...
Big Steve, You could try taking out a 0.1 at a time from 4.0 deg. until you get to your 6.10 index.
SoDak, I have found with my bbc if I advance my timing closer to optimum, I can increase the rpm required for the blower to make more boast to...
Don't forget, if you want to spin the blower faster with what you got you have to add timing and fuel. With good air we can get 7300 rpm at 29...
I had the same thing happen to me with a RCD blower hub. I made puller incorporating a 20 ton bottle jack. It came off, but galled the crank...
Hi Bob, We ran a 6.006 sec (6.000 QE index) at 21.0 psi @ 25% over at 7300 rpm with a Littlefield HH with delta opening in our Cheyenne Jet boat....
In the Ignition Timing vs Engine RPM plot make sure that the engine rpm and the ignition timing point is what you want it to be at that rpm. This...
One other thing I noticed is the bearing number you gave us, clevite CB1512V 010, are undersize bearings not oversize. For oversize bearings...
You could have an initial oiling startup issue. You can see in one of the photos that the bearing has pulled away from the brass centering pin. I...
First thing that comes to mind is phasing. Make sure that the crank trigger is facing one of the magnets when the mag is on #1.
Will and drew556, Getting back to my basic question, I check the ignition setting in the Grid and it is set at: 6AL/7AL/MSD8/PRO MAG If I...
I'm using a rpm chip plugged into the 8147 box right now, because the two yellow rpm wires were too short to reach the Grid. I had MSD make me a...
Hi Guys, I am using a 44 mag with a 8147 box, the one with the rpm module slot, and a 7730 Grid. In the Grid settings I have set Burnout, Launch...