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Thanks Jerry Nice to hear from you Pricey yes I did the numbers!

Thinking of building a thunder boat I like your best choice of wood kits available Thanks

Thanks Al

Al I would like to order 10 R6 sent to zip 48462 Thanks Dave berari

Hello Al I would let purchase 10 R6 plugs. Please quote $ to zip48462 Thanks Dave berari

joe I will do $125 for all the 97exr parts

joe I have a 97 exr do alot of these parts fit

Nice boat. When is going to get wet ? What engine?

Just getting back into racing after 19 yrs /was doin good when I got out but you guys are going a lot faster and so would I and I need to understand more

Rossi 21/brand new 1999 picco45/ new 1999 67 picco and cmb 67

Not trying for perfect porting -just wanting to understand relationship for optimizing performance along with the many other considerations Have played with volume, shape, pipe, prop and boat ( all of which I have learned from this discussion group and orhers)

Well squeezing the trigger from start to finish , I do drive like that sometimes

This is for nitro engines right not gas

Thanks but will this apply to nitro eng

Ok yes let’s talk blowdown numbers. Is there a NUMBER that is you should be working for Will that number change for say RPM Torque Overall hp-performance Just trying to get the best performance aside from other things

And what exactly is blow down

What is the “rule of thumb“ for the boost/transfer to be upped relative to increase of exhaust?

So what is the rule of thumb to raise boost/transfer relative to rise in exhaust . Are we talking equal amount of degrees or a percentage of difference between 128 and 185 They have to work together right?

Thanks Dave more great pix

Thanks Phil