Both on a rotary and on a piston engine..

The reason i am asking i that my stock pump on my 180sx went out and i have like 3 stock TII pumps i my garage.

Can it support 250FWHP on a pistonengine?

 

Yep, no problem.
On an FC, it will barely support 250hp at the wheels.
That's like 300 for a piston engine.
BTW, flow is like 180lph.


-Ted

 

how much are better fuel pumps? ie: walbaro

btw, ur avatar pwns

 

money or flow rate?

255lph (thats why its called the walbro 255)
$100 on ebay

 

i would have to agree with ReTed, i noticed pressure dropping off in the 260-270 range so i would guess it can push 250 safely on the stock ECU since i was able to compensate with my standalone. rotaries are less efficient than piston engines so i would guess at least 300WHP for a piston engine.

 

Not THAT much less efficient. I'd give it less than 10% more HP on a piston engine, to be safe.

 

actually they are about that much less efficient, the rotary is a gas hungry machine when you open the throttle.

 

You'd be suprised...

Turbos that pump out 400hp on a piston motor will barely crack 300 on a rotary.
So it's more like 20%+!


-Ted

 

In terms of producing hp efficiently, what kind of engines are u guys comparing the rotary to? This is just a question but how much better does a 1.6L piston engine produce power compared to a rotary?

 

BSFC would be about 0.55 to 0.60 on a rotary engine.
A modern, multi-valve piston engine will go 0.55 and even down to 0.50 on the BSFC.

You're asking way too general a question.
You talking Honda B16?


-Ted

 

I'm not asking about any specific engine. The reason I asked that question, was to go against comments like "rotaries are less efficient than piston engines so i would guess 250whp to be at least 300WHP for a piston engine". I asked how much better a 1.6L piston engine would produce power simply because it has the closes displacement to a 1.3 rotary.

 

Fixed

 

This is where your assumption is wrong.
The 1.3-liter rotary engine runs similarly to a 2.6-liter to 3.0-liter 6-cylinder.


-Ted