Engine calcs
Thread Starter
Newbie
Joined: Apr 2003
Posts: 8
Likes: 0
From: St. Louis, MO (communting to Burbank, CA weekly)
Engine calcs
I'm currently trying to calculate some theoreticals on the 4G94 and needed some quick help as I don't have the service manuals yet.
Looking for the AT specs for:
1) Gear ratio (only found MT specs)
2) Stock compression (believe it to be in the neighborhood of 10:1)
3) Actual drop (I assumed something silly like 2.1 or so, is that close?)
Quick confirmation too... is the block cast iron like the rest of the Mitsu/Eagle/etc. blocks I've seen?
I'll put out my final numbers after I'm done if anyone's interested. And thanks in advance.
EDIT: Do these check out with you all? Found that the block is in fact cast iron the stock compression appears to be 9.5:1, and found this for the grear ratio after some searching:
Transmission INVECS-II 4speed Full Automatic
Gear ratio 1st 2.842
2nd 1.529
3rd 1.000
4th 0.712
reverse 2.480
Final gear ratio 4.041
Looking for the AT specs for:
1) Gear ratio (only found MT specs)
2) Stock compression (believe it to be in the neighborhood of 10:1)
3) Actual drop (I assumed something silly like 2.1 or so, is that close?)
Quick confirmation too... is the block cast iron like the rest of the Mitsu/Eagle/etc. blocks I've seen?
I'll put out my final numbers after I'm done if anyone's interested. And thanks in advance.
EDIT: Do these check out with you all? Found that the block is in fact cast iron the stock compression appears to be 9.5:1, and found this for the grear ratio after some searching:
Transmission INVECS-II 4speed Full Automatic
Gear ratio 1st 2.842
2nd 1.529
3rd 1.000
4th 0.712
reverse 2.480
Final gear ratio 4.041
Last edited by Platinum; May 18, 2003 at 10:12 PM.
Thread Starter
Newbie
Joined: Apr 2003
Posts: 8
Likes: 0
From: St. Louis, MO (communting to Burbank, CA weekly)
Thanks for the reply.
Sorry for the "actual drop." Was thinking about the intercooler on the RRM turbo and posted this by accident. Was trying to find the average psi drop from intake to piston. Sleep deprevation = :-P
Sorry for the "actual drop." Was thinking about the intercooler on the RRM turbo and posted this by accident. Was trying to find the average psi drop from intake to piston. Sleep deprevation = :-P
Thread Starter
Newbie
Joined: Apr 2003
Posts: 8
Likes: 0
From: St. Louis, MO (communting to Burbank, CA weekly)
lol... 
Sorry bro, I may be something of an engineer but I don't intend on fabricating anything for mass consumption.
I'm really just looking to take this engine to the limit for fun. That's why I bought this car in the first place. Cause it's different and the engine sux but has decent potential. (Although the SOHC thing is killing me right now... ) I know there's alotta great info on this board on what to do and what not to do, but I have an interest in doing calcs, blueprinting it, and doing custom or prepackaged mods where appropriate. Just a science project if you will...
Rock out with your **** out. Chuuch...
Sorry bro, I may be something of an engineer but I don't intend on fabricating anything for mass consumption.
I'm really just looking to take this engine to the limit for fun. That's why I bought this car in the first place. Cause it's different and the engine sux but has decent potential. (Although the SOHC thing is killing me right now...
) I know there's alotta great info on this board on what to do and what not to do, but I have an interest in doing calcs, blueprinting it, and doing custom or prepackaged mods where appropriate. Just a science project if you will... Rock out with your **** out. Chuuch...
