General Rotary Tech Support Use this forum for tech questions not specific to a certain model year

compression question

Old 02-05-18, 12:21 PM
  #1  
Full Member
Thread Starter
 
Join Date: Feb 2018
Location: Washington
Posts: 120
Received 2 Likes on 2 Posts
compression question

First, hello. This is my first post.

I'm looking at a 1985 GSL-SE that has about 180,000 miles on it. I emailed the seller asking if he'd had a compression test done, and he said he tested it and it was 9:1.
I'm mostly sure that's a random compression ratio and he hasn't tested the engine at all. Shouldn't he be giving me two numbers in PSI?

It's been a while since I've owned an RX-7, and I'm not a mechanic or anything, so I wanted to find out if that was a real answer.

Thanks.
broccolini is offline  
Old 02-17-18, 07:35 PM
  #2  
Original Gangster/Rotary!

iTrader: (206)
 
GoodfellaFD3S's Avatar
 
Join Date: Mar 2001
Location: FL-->NJ/NYC again!
Posts: 29,999
Received 138 Likes on 111 Posts
Compression ratio on that engine is 9.4:1 IIRC. You should receive six readings, three per rotor. It's also important to do the test correctly---- engine warmed up, throttle open, take note of cranking rpm, etc.
GoodfellaFD3S is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
zkeller
3rd Generation Specific (1993-2002)
26
02-14-12 11:23 AM
theone81
2nd Generation Specific (1986-1992)
1
01-17-05 04:29 PM
asherwood
2nd Generation Specific (1986-1992)
3
05-16-03 08:49 PM
rg42284
3rd Generation Specific (1993-2002)
0
10-20-01 07:47 PM


Thread Tools
Search this Thread
Quick Reply: compression question


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: