OK, I'm too lazy to crunch the numbers right now, so can anybody give me a few data points for a stock CRX DX with manual transmission? I'm trying to get an idea of the rpm at highway speed, so if anybody knows what rpm you run at 65, 70, 75, or 80 mph, it would help me out.

Thanks

 

Search the FAQ... Took me 1 minute...

http://crx.honda-perf.org/math/index.html


Here ya go...

 

i found a crx couculater http://crx.honda-perf.org/math/index.html thats the site i think its realy kool

 

Cool link. That'll save me some calculator time.... I like that you can select the final drive independantly of the transmission. That's exactly what I was looking for....

Thanks

 

OK, this is a related question....

With my tires, I've determined that adding an HF final drive to my DX trans will let me cruise on the highway at about 3200 rpm in 4th and 2600 in 5th. That'll work perfectly considering the fact that the DX engine seems to be happiest in that 3200-3500 rpm range. Since I'm building this car for fuel economy, I can use 4th for normal highway driving and 5th for the long flats and downhill sections (lots of downhill since I live at 7000 ft altitude).

BUT, I'm also thinking of swapping to MPFI. That will only be a good idea if the MPFI swap would either keep the power in the same rpm range or lower it slightly. If the swap yields power only at higher rpms then it would be better to just leave the DX final drive in the trans...

SO, can anybody tell me how the MPFI swap would affect where the engine makes power or operates most efficiently?

Thanks again everybody.