I can't seem to find any. The only thing I have seen is the poor fella running a ton of boost on his stock bottom making six hundred and something rwhp and 700 ft lbs of torque. I want to see what my car "can" look like bolting it on with a good tune and a "realistic" amount of boost! Thanks!
Hmmm....twenty views so far, including Matfab. I guess that answers that question! LOL I would have thought a baseline dyno for such a large purchase (for me anyways) would be fairly common. Is a roots blower even recommended for a stock bottom end? Can the pistons handle minimal boost from a roots blower and the amount of cylinder pressure generated for many miles? Also, is the RDP blower a twin screw or single screw?
I do know the roots style put a lot of pressure faster than ours, but keeping the boost at a reasonable level, you should be able to use the stock internals... but...?
DING! I'm going with Momo on this. Efficiency, capability, reliability, how it gets there, heat, sound, etc. might be different but when the piston sees a pound of boost it doesn't know where it came from.
Negative ghost rider... roots type blowers put boost in a more "direct" means to the engine more than centrifugal types like ours. You'll usually see a quicker responce with a roots style over ours. Good for us because we don't get traction that well anyway! Lol!
True to a point.... and correct me if I wrong, which I probably am, but if the blower, i.e. roots style, is directly over the manifold, doesn't it force the compressed air directly into the engine rather than having any, if only even a little "lag" from our centrifugal types. I know we don't have lag like a turbo, but anything that has to go through piping has to take longer to get there right?
Sure. But that doesn't change the amount of boost. Lag or no lag won't make a difference when you're talking about the motor holding up. If the blower produces 5lbs max boost it doesn't matter (much?) if it's 5lbs right now or 5lbs gradually in a little while.
Sorry I do not have a dynograph for that motor, thats why I didn't post. I'm sure they will post it but i wasn't working on this project myself.
