Recent content by iamrenn

WOW!!!!!!!

Blizzy, good article, very informative. I think I will plan to use a centrifical, probably a turbo and use the wastegate as suggested. rms, the airboat manufacturers sell props in horsepower ranges. They supply composite blades mounted into a aluminum hub. The props are marked so that you can...

cribbj, you are reminding me that I should have stayed in school a bit longer. You are an engineer yes?? Thanks for that info. I have experienced the diminishing returns thing on the airboat I ride with my neighbor. He has a 572ci Chevy and his boat is nearly 3000 lbs. His cruise speed requires...

thanks cribbj, this is getting more clear. This forum is very helpful. I think I like the idea of building boost with engine speed. An airboat would benefit little from off idle torque. The prop doesn't do much until 2500 to 3000 rpm. I will have to check that for sure. It might be nice for...

Ok, this is making more sense to me now. It's about efficiency within a range. The fact that the rpms are low limit the horsepower output but the torque#s are good because of air flow efficiency. Sounds like a turbo is a good way to increase torque. I understand now at least that the engine...

Last post was a response to rms. Thank you and to Lex and Jake as well. It seems that other than increasing displacement typical mods are going to push hp up - typically at the expense of torque. Per Lex's recommendation I need forced induction to make more capacity, rms says strike is just...

I'm open to this, though I have taught to believe what I previously stated. Help me out. So, you build two engines - both with the same displacement. One 3.440 bore x 3.375 stroke and another 3.750 bore x 3.440 stroke. Same cam, heads - everything. The torque and bhp curves are the same...

Stroke increases torque, cubes increase potential. I am used to focusing on horsepower with torque as only a side note. What about the other things. Supercharging is like adding cubes, yes? And compression. So parts need to be stronger. How do you maximize gains below 6000 rpm? Keep a stock...

Taking things in a different direction, what can be done to maximize torque on a 1UZ engine? It may be that these are not designed for torque but I have an interest in using this engine to drive a propeller for an airboat application. Automotive engine airboaters use reduction units (2:1 to 3:1)...