asmith

iTrader: (2)

will a 2.3 litre 500 efi whipple feed a 540ci. if so how much boost will it make? the motor is 8.5 to 1 compression. thanks for any help.

Pure Energy

I need to know the same. The 3.3 I bought turned out to be a 2.3 , go figure!

MnHowardCat

I would say yes but you should try Dustin I'm building a pair of 509's that should be in the 800hp range I did send my blowers back to Dustin and had the front barring changed from a sealed bearing to a oil feed off the oil adapter and returns to the pan to help it live longer with the smaller pulley on the blower
Don

Coolerman

How did your dyno session turn out?

MnHowardCat

I have not gone yet I'm going to Waite until I get back from vacation so I'll have more time and won't have to rush
Don

HP350SC

Here is a post I cut and pasted from Dustin:
Quote:
Originally Posted by Stealth Marine
Thanks.
Trying to find a solid way of determinging where the cutoff is for using the 2.3 vs. the 3.3 based on engine flow rates and desired boost levels.

The underlying question is...
Would it ever be possible to put a 2.3 on an engine and "underfeed" the intake manifold resulting in a NEGATIVE manifold pressure reading???

Based on what you just said, I would think it impossible.




Chris,
Yes, you could have vacuum in the manifold with the sc. It can actually be a restriction if it's not flowing more air than the engine would naturally aspirated. This would make less hp than naturally aspirated because of the energy it would take to operate the sc.

The 2.3ax (rear entry) cut off should be 700hp, from that point and above, the 3.3ax will flow more at a higher efficiency. The 2.3R (top entry) cut off should be 675hp. The 2.3ax and 2.3r can make far more power, but this is where the 3.3 becomes superior. The most we've made with a 2.3 is 900hp but it was working the compressor pretty hard.
Dustin