What do you guys think of this motor?
07-06-2010, 08:26 PM
#13
4th Gear Member
Join Date: Oct 2006
Location: WI
Posts: 1,173
That car with the low compression would maybe make 270-280rwhp but not 300. High compression with heads/cams/intake are making 330rwhp and I think that the low compression would make it a dog unless you put a twin screw blower on it right outta the gate. With a centri blower it will be a dog til you hit full boost. You want a 9.2:1 compression with a centri, not 8.5:1.
07-07-2010, 05:08 AM
#14
3rd Gear Member
Join Date: Jul 2009
Location: California
Posts: 875
why? I have a slight idea as to what compression is exactly, and how blowers are most beneficial when it's low, but if you don't mind explaining this a bit tell me once in for all please...
What's bad about driving a low compression engine without a supercharger & why it's good OR bad driving a high compression car with or without a s/c? I'm having a hard time puttin the puzzles together.
07-07-2010, 08:09 AM
#15
6th Gear Member
Join Date: Aug 2009
Location: New Jersey
Posts: 6,028
why? I have a slight idea as to what compression is exactly, and how blowers are most beneficial when it's low, but if you don't mind explaining this a bit tell me once in for all please...
What's bad about driving a low compression engine without a supercharger & why it's good OR bad driving a high compression car with or without a s/c? I'm having a hard time puttin the puzzles together.
What's bad about driving a low compression engine without a supercharger & why it's good OR bad driving a high compression car with or without a s/c? I'm having a hard time puttin the puzzles together.
07-07-2010, 08:14 AM
#16
5th Gear Member
Join Date: Apr 2006
Location: Missouri
Posts: 4,503
That motor will suck to drive DD...it'll just bog. Thats why I didn't get it. I won't be able to put a blower on my car for a few years so i want something to drive until i do. Im lookin at a 9.7:1 motor right now. Just figuring out shipping 
07-07-2010, 08:33 AM
#17
4th Gear Member
Join Date: Oct 2006
Location: WI
Posts: 1,173
+1 Nas, I'm with you on this one! Could someone please shed some good light on this? I understand the need for lower compression on a motor built for F/I and the need for higher compression for N/A... but if someone were to ask me, I wouldn't be able to put it into words.
http://en.wikipedia.org/wiki/Compression_ratio
Chart showing how forced induction increases your compression ratio. It's not the compression ratio that will hurt you it's the fuel you run, higher compression= need for higher octane fuel to avoid detonation.
http://www.pawinc.com/charts/Superch...mpression.html
Last edited by smythge; 07-07-2010 at 08:35 AM.
07-07-2010, 02:41 PM
#20
5th Gear Member
Thread Starter
Join Date: Mar 2008
Location: NJ
Posts: 2,312
Well i changed my mind again. Im getting a blower somewhere by the winter/spring so i think im gonna get it. Its really too good of a deal to give up. Im gonna check everything out and if everything is good im gonna get it. Ill keep you guys posted on what i do. My cars been sitting for 2 months and its driving me nuts hahaha. I think this motor might be it though. Anyone have any other input?