Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > 3rd Gen Honda Prelude

Thread Title
Compression specs

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 04-12-2011, 08:24 PM
shane77's Avatar
I'm New
 
Join Date: Apr 2011
Location: Vancouver
Posts: 13
iTrader: (0)
shane77 is on a distinguished road
Compression specs (pictures)

Does anyone know what the compression should be on a 1990 prelude si. 170psi?

The guy i bought the car from said engine has 38,400miles on rebuild.

Last edited by shane77; 04-13-2011 at 11:22 PM.
Reply With Quote
  #2 (permalink)  
Old 04-13-2011, 10:40 AM
Platinum Member
 
Join Date: Feb 2010
Location: Fayetteville, Ga.
Posts: 1,281
iTrader: (0)
Lespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond repute
Re: Compression specs

That's pretty good. I remember reading that it should be 160-210 or something like that. It always gives a good compression number when it's already been warmed up and the throttle is wide open.
Reply With Quote
  #3 (permalink)  
Old 04-13-2011, 01:19 PM
Platinum Member
 
Join Date: Mar 2011
Location: Eastern WA
Posts: 2,261
iTrader: (1)
luzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond repute
Re: Compression specs

It's more important to have consistent numbers on all four cylinders. The closer they are to each other the better. If you see 170 on all cylinders then you are good. If you see 160 on all you are also good. If you see 170 on #1, #2, and #4 and 150 on #3, then you have a problem on #3.
__________________
1991 Prelude Si ALB 4WS
2017 Ram Rebel
Reply With Quote
  #4 (permalink)  
Old 04-13-2011, 09:16 PM
shane77's Avatar
I'm New
 
Join Date: Apr 2011
Location: Vancouver
Posts: 13
iTrader: (0)
shane77 is on a distinguished road
Re: Compression specs

My numbers are

#1 (210)
#2 (202)
#3(208)
#4(210)

The previous owner said the engine was rebuilt in 2006 with 38,000 miles on it,

Last edited by shane77; 04-13-2011 at 09:20 PM.
Reply With Quote
  #5 (permalink)  
Old 04-13-2011, 10:04 PM
Platinum Member
 
Join Date: Mar 2011
Location: Eastern WA
Posts: 2,261
iTrader: (1)
luzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond repute
Re: Compression specs

Those numbers seem pretty high. I believe Honda says 175 is ideal. Can you describe exactly how you tested the compression?
__________________
1991 Prelude Si ALB 4WS
2017 Ram Rebel
Reply With Quote
  #6 (permalink)  
Old 04-13-2011, 10:10 PM
shane77's Avatar
I'm New
 
Join Date: Apr 2011
Location: Vancouver
Posts: 13
iTrader: (0)
shane77 is on a distinguished road
Re: Compression specs

Unplugged main relay and ignition coil wire took out the 4 plugs ,hand tightened brand new tester, Got in car gas pedal to the floor , pushed in clutch and turned car over about 6times until the needle stopped rising. Yeah i thought it seemed high?

The previous owner said engine was completely rebuilt, new everything and the block bored over, he paid close to $4000cnd for it

Last edited by shane77; 04-13-2011 at 10:15 PM.
Reply With Quote
  #7 (permalink)  
Old 04-13-2011, 10:17 PM
shane77's Avatar
I'm New
 
Join Date: Apr 2011
Location: Vancouver
Posts: 13
iTrader: (0)
shane77 is on a distinguished road
Re: Compression specs

Quote:
Originally Posted by Lespaul59 View Post
That's pretty good. I remember reading that it should be 160-210 or something like that. It always gives a good compression number when it's already been warmed up and the throttle is wide open.
lespaul do you remember were you saw the 160-210psi specs
Reply With Quote
  #8 (permalink)  
Old 04-13-2011, 10:24 PM
Platinum Member
 
Join Date: Mar 2011
Location: Eastern WA
Posts: 2,261
iTrader: (1)
luzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond repute
Re: Compression specs

Quote:
Originally Posted by shane77 View Post
Unplugged main relay and ignition coil wire took out the 4 plugs ,hand tightened brand new tester, Got in car gas pedal to the floor , pushed in clutch and turned car over about 6times until the needle stopped rising. Yeah i thought it seemed high?

The previous owner said engine was completely rebuilt, new everything and the block bored over, he paid close to $4000cnd for it
It sounds like you tested it right. I was going to ask if you were using a known good tester. The ideal number I posted came from another web site. I wasn't able to find the specified compression numbers in the online manual, and my manual is for a b20a5.
__________________
1991 Prelude Si ALB 4WS
2017 Ram Rebel
Reply With Quote
  #9 (permalink)  
Old 04-13-2011, 10:35 PM
shane77's Avatar
I'm New
 
Join Date: Apr 2011
Location: Vancouver
Posts: 13
iTrader: (0)
shane77 is on a distinguished road
Re: Compression specs

I bought this one Equus Compression Tester Kit | Canadian Tire
Reply With Quote
  #10 (permalink)  
Old 04-13-2011, 11:06 PM
Platinum Member
 
Join Date: Mar 2011
Location: Eastern WA
Posts: 2,261
iTrader: (1)
luzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond reputeluzer has a reputation beyond repute
Re: Compression specs

I'm sure there's nothing wrong with it.

I don't see that you will have any problems with those compression numbers. I really wouldn't be concerned about it. Maybe the previous owner did something to boost compression when he rebuilt it.
__________________
1991 Prelude Si ALB 4WS
2017 Ram Rebel
Reply With Quote
  #11 (permalink)  
Old 04-13-2011, 11:23 PM
shane77's Avatar
I'm New
 
Join Date: Apr 2011
Location: Vancouver
Posts: 13
iTrader: (0)
shane77 is on a distinguished road
Re: Compression specs

Heres a few pics

#1 and #4


#2



Last edited by shane77; 04-13-2011 at 11:31 PM.
Reply With Quote
  #12 (permalink)  
Old 04-13-2011, 11:27 PM
shane77's Avatar
I'm New
 
Join Date: Apr 2011
Location: Vancouver
Posts: 13
iTrader: (0)
shane77 is on a distinguished road
Re: Compression specs

Cool! good to know, Thank you for your help

Last edited by shane77; 04-13-2011 at 11:30 PM.
Reply With Quote
Reply


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

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
5th Gen Specs Anthony 5th Gen Honda Prelude 18 10-17-2011 02:02 AM
1st Gen Specs Anthony 1st Gen Honda Prelude 7 03-30-2009 06:36 PM
2nd gen specs Anthony 2nd Gen Honda Prelude 6 01-30-2008 11:37 PM
4TH GEN Specs dakilla4ever 4th Gen Honda Prelude 18 09-04-2007 10:47 PM
4th gen specs... skylight 4th Gen Honda Prelude 2 03-27-2007 02:07 AM


All times are GMT -4. The time now is 09:52 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.