3rd Generation Specific Talk about 3rd gen RX-7's here.

Cold Motor Compression

Thread Tools
 
Search this Thread
 
Old Jan 7, 2005 | 07:45 PM
  #1  
Lawyer's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2003
Posts: 13
From: Florida
Default

Hey, my last topic was about how my 94 flooded, and what I should do to get her started.



Well I got some time to work on her the past few days. I did a compression test last night and got nothing. Figured it was still flooded. So I unflooded (again), and got her dry.



I then took another test, got it to about 30psi. Added some mobil 1, got her up to around 50psi on both rotors, even pulses. Cant seem to get it any higher. I tryed some MMO, and it really didnt help much. Im going to add a bit more, to see if it helps. I dont really feel like putting ATF in.



But my question is, what should be enough compression to start a cold motor? 75, 80psi? I still have had no luck getting her to start.



Thanks.
Old Jan 7, 2005 | 08:17 PM
  #2  
jspecracer7's Avatar
Senior Member
 
Joined: May 2002
Posts: 4,928
From: Okinawa, Japan
Default

60 psi maybe? I had 3 bad apex seals (front rotor I believe) and 2 bad apex seals in the rear (this is in one of my many motors) and it would start up just fine when it was cold.



Now when it was hot that's a different story.
Old Jan 8, 2005 | 02:00 PM
  #3  
angelck022's Avatar
Member
 
Joined: Nov 2004
Posts: 42
From: CAMAS, WASHINGTON
Default

pineapple/gtgarage did a compression test on my 94 fd, and it came out 86 on front and 82 rear. According to the guys at these garages, 70 is the breakpoint for being able to start an fd.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
t210thanniv
Rotary Engine Building, Porting & Swaps
2
Apr 16, 2004 12:29 AM
ColinRX7
Insert BS here
11
Jan 10, 2004 04:00 PM
1Revvin7
2nd Generation Specific
4
Sep 1, 2002 05:17 PM
Twin89Stangs
Insert BS here
5
Mar 3, 2002 03:24 PM
7 of 9
Insert BS here
10
Dec 14, 2001 10:20 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 11:07 PM.