+ Register
|
Main Menu
Login
Fast Search Slow Search
Google Ad |
Browsing this Thread:
1 Anonymous Users
#1
Comp Ratio?
sarav1200
Posted on: 2006/3/6 12:50
hey guys... does anyone know the maximum Cr you can have running pump fuel (98 oct.)?? roundabouts anyway...
thanks  
#2
Re: Comp Ratio?
vixen
Posted on: 2006/3/6 13:08
Matts 120Y...1270cc motor used to run 11.2:1 but would run on a bit so i lowered it to 10.5:1 and its ok and still runs well,has a 32/36 weber on it.GREG
#3
Re: Comp Ratio?
Mildman
Posted on: 2006/3/6 23:23
From my ricer days I understood 12:1 was the limit on high octane pump fuel.
That meant about 14psi boost on a static 8.5:1 engine.
#4
Re: Comp Ratio?
hotrod88
Posted on: 2006/3/7 4:56
From my own exp. 11:1 would be as high as I would go on pump fuel, & in some cases that would be pushing it , depending on how much timming your running & such.
#5
Re: Comp Ratio?
Mildman
Posted on: 2006/3/7 22:23
11:1 is probably fair with many engines I would say.
The 12:1 was in an RB20DET motor in a friends race car. He had a non turbo engine and boosted it with an enormous turbo, getting to around that 12:1 mark. He blew it up twice....so maybe 12:1 is a little far...
You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.
|
