Compression numbers - Suzuki Forums: Suzuki Forum Site
Suzuki Forum Suzuki Forums

» Auto Insurance
» Featured Product
Wheel & Tire Center

Go Back   Suzuki Forums: Suzuki Forum Site > Suzuki Models > Suzuki Jimny, Sierra & Samurai Forum
Register Home Forum Active Topics Photo Gallery Garage Search Today's Posts Mark Forums Read Auto EscrowAuto LoansInsurance Advertise

Suzuki-Forums.com is the premier Suzuki All Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 05-09-2012, 01:59 PM   #1 (permalink)
Member
 
Join Date: Apr 2012
Posts: 42
Gallery: 0
el_loco is on a distinguished road
Default Compression numbers

One of the Sammy's I'm looking at apparently has borderline low compression numbers. Sounds like when the compression test was done in 2010 it had ~175 on 1, 2 and 4 and 165-170psi on 3. If these are even still accurate is this a motor that is needing a rebuild? it's a 1.3, stock carb and apparently was rebuilt once a few years ago.

Thanks
el_loco is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-09-2012, 04:47 PM   #2 (permalink)
Senior
 
Azelgin's Avatar
 
Join Date: Oct 2010
Location: S. E. Arizona
Posts: 264
Gallery: 0
Azelgin is on a distinguished road
Default

At 175~165 it's getting there, but still has some life left in it. I guess it depends on how good a deal you're getting on it. I believe a new stock motor, with stock head, is somewhere around 200psi.

My 86 is at 125k miles and down to 160 on all four cylinders, is overdue for a rebuild, but still runs ok. It's been that way for the last 10k miles. Oil consumption is about a quart every 700 miles and it shows some smoke when I decellerate. I know it's the rings, as I replaced the valve stem seals and the oil consumption was cut by about 1/3. I'll find a core to rebuild, so I wont have much down time when I swap in a new motor.
Azelgin is offline   Reply With Quote Quick reply to this message
Old 05-09-2012, 04:59 PM   #3 (permalink)
Member
 
Join Date: Apr 2012
Posts: 42
Gallery: 0
el_loco is on a distinguished road
Default

did you replace the valve stems hoping it would bump your compression up? Or were you just trying to stop the oil burn?
el_loco is offline   Reply With Quote Quick reply to this message
 
Old 05-09-2012, 06:35 PM   #4 (permalink)
Senior
 
Azelgin's Avatar
 
Join Date: Oct 2010
Location: S. E. Arizona
Posts: 264
Gallery: 0
Azelgin is on a distinguished road
Default

Quote:
Originally Posted by el_loco View Post
did you replace the valve stems hoping it would bump your compression up? Or were you just trying to stop the oil burn?
I was hoping my oil usage was from the valve stem seals. The Sammi had been sitting for several years and the stem seals had hardened. New seals wont do anything for compression. I also found that the rocker shafts were scored, probably from lack of oil and too long between changes. These are pretty tough little motors and will really last a long time when properly maintained.
Azelgin is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Suzuki Forums: Suzuki Forum Site > Suzuki Models > Suzuki Jimny, Sierra & Samurai Forum

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Suzuki Forums: Suzuki Forum Site forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



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

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 06:22 PM.



Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.