zero compression - Honda-Tech - Honda Forum Discussion


Honda S2000 Honda S2000

zero compression

Reply
 
 
 
Thread Tools Search this Thread
Old 03-20-2017, 12:39 PM   #1
Honda-Tech Member
Thread Starter
 
01-0281's Avatar
 
Join Date: Feb 2009
Posts: 49
Default zero compression

hello all, I have a 02 s2000 and recently noticed it sounded a bit off, I took the car in to have a compression test done to find out that cylinder 4 has zero. I was told that my best bet would be to try and find a new motor rather than rebuild it due to cost being roughly the same for both and for the fact that because it hasn't been torn down yet we're uncertain of the reason behind the lack of compression (hole in cylinder/piston). just wanted to get your guys input on this matter as I look to source a new to me motor and tranny combo. thank you.
01-0281 is offline   Reply With Quote
Old 03-20-2017, 04:15 PM   #2
Honda-Tech Member
 
Greyout's Avatar
 
Join Date: Nov 2001
Location: Austin, Tx, USA
Posts: 3,889
Default Re: zero compression

Probably a broken or bent valve?
Greyout is offline   Reply With Quote
Old 03-20-2017, 08:39 PM   #3
Honda-Tech Member
 
Join Date: Jan 2013
Location: Bama
Posts: 1,345
Default Re: zero compression

Scope the cylinder... maybe you can see if the problem is valve related or piston related.
JRCivic1 is offline   Reply With Quote
Old 03-25-2017, 12:56 PM   #4
Honda-Tech Member
Thread Starter
 
01-0281's Avatar
 
Join Date: Feb 2009
Posts: 49
Default Re: zero compression

both great suggestions. ill try them out and see what I find
01-0281 is offline   Reply With Quote
Old 03-25-2017, 01:04 PM   #5
-Intl Steve Krew
 
Caoboy's Avatar
 
Join Date: Dec 2003
Location: Central Valley, CA
Posts: 3,660
Default Re: zero compression

A rebuild is always better than gambling on a used motor.

​​​​
Caoboy is online now   Reply With Quote
Old 03-26-2017, 01:47 PM   #6
Honda-Tech Member
Thread Starter
 
01-0281's Avatar
 
Join Date: Feb 2009
Posts: 49
Default Re: zero compression

how much does a standard rebuild cost usually?
01-0281 is offline   Reply With Quote
Old 03-26-2017, 05:28 PM   #7
-Intl Steve Krew
 
Caoboy's Avatar
 
Join Date: Dec 2003
Location: Central Valley, CA
Posts: 3,660
Default Re: zero compression

It'll depend on how much you can do yourself, how much a machine shop will have to do and what all is needed. First things first, diagnose the engine and find out why you have zero compression in the one cylinder.
Caoboy is online now   Reply With Quote
Old 05-08-2017, 08:23 PM   #8
Honda-Tech Member
 
JustOneOrTwoPosts's Avatar
 
Join Date: Jul 2002
Location: yay area, ca, usa
Posts: 664
Default Re: zero compression

A good technician will be able to tell you where the loss of compression is coming from and pinpoint where the mechanical issue is... good luck.
JustOneOrTwoPosts is offline   Reply With Quote
Old 05-09-2017, 11:53 AM   #9
Honda-Tech Member
 
Chance EG's Avatar
 
Join Date: Jan 2013
Posts: 365
Default Re: zero compression

Quote:
Originally Posted by 01-0281 View Post
both great suggestions. ill try them out and see what I find
Definitely pull the plugs and run a scope. If it's a valve issue that would be worth the time to fix rather than swapping the entire engine.

Quote:
Originally Posted by Caoboy View Post
A rebuild is always better than gambling on a used motor.

​​​​
That's a huge over generalization, and quite possibly not true for a F20C engine. Most members on S2KI are known to prefer engine swaps as opposed to rebuilding blown engines like this since the only viable aftermarket pistons (if that's the issue) are Mahle and those still require some special bore/honing to get installed correctly with the FRM sleeves.

Not to mention if you buy a used engine from a reputable vendor like Hmotorsonline or something similar and make sure it's compression/leak down tested first, you're not even close to taking a "gamble" on it...

Salvage what you can from your current engine regardless of what ends up happening.

Edit: Actually I'm pretty sure you can still even pick up new F22 engines from Honda by certain dealerships. May also be worth looking into that.
Chance EG is online now   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
0 Compession on one cyl? Strange compression results, please help! DeCoY Acura Integra 5 06-21-2017 02:45 PM
Washed Cylinders -> Zero Compression? vinuneuro All Motor / Naturally Aspirated 17 10-20-2008 06:17 AM
did a compression test and cylinder #1 has no compression the rest have 220 street dreams Forced Induction 8 11-21-2004 05:12 PM
What should a 95Ls motor have for cylinder to cylinder compression? HybridCoupe Tech / Misc 1 10-06-2002 08:33 PM
Car stolen and recovered... bent valve question yobtah Tech / Misc 2 08-16-2002 10:03 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 08:54 PM.


 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: