anybody here have 13:1 on their daily driven car? what octane are you using? how's the mpg? any advantages/disadvantages?

im really leaning towards 13:1. i don't see the point of going with any lower compression, when i can easily make more power with a higher compression.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HKJ &raquo;</TD></TR><TR><TD CLASS="quote">anybody here have 13:1 on their daily driven car? what octane are you using? how's the mpg? any advantages/disadvantages?

im really leaning towards 13:1. i don't see the point of going with any lower compression, when i can easily make more power with a higher compression.</TD></TR></TABLE>

Assuming you have some majorly beefy cams to compliment that 13:1 compression, thats gonna be one annoying street car. Def. would need massive amounts of tuning.

Mike

 

i hope u have a lot of money to be paying for race gas everyday

 

anybody else?

maybe my setup would help..
gsr head
skunk2 IM
JUN3 cams
JUN cam gears
JUN retainers
JUN valve springs
PNP by JUN
2L gsr block resleeved by GE

somebody has to be running 13:1 on 94 octane..

 

Why do you insist on 13:1 CR? Do you feel that the higher compression you go the more power you'll make out of your setup? Once you start increasing your cranking pressure too much, you're sure to lose high end power. Like sledgehammer said, I hope you have some huge cams that'll like that compression. A majority of the people assume that the higher compression you have the more power you get. There's more aspects that you have to take into consideration with cams being the top priority. I dislike that people only listen to all the hype. If you better understand how it affects your engine, you'll easily find the right answer to your question without anybody's help.

 

Steve's (SGT) street motors he builds run in between 12.1-14.1 compression. It can be done. The amount of tunning youll need though, is another story

 

just go with a 12-12.5:1 setup and youll be fine. 13:1 is overkill for the JUN3. especially to be daily driven. Youll need to get it tuned every week.