Jump to content

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

Acceptable Compression Test Results?

#1 User is offline   HarryD 

  • Group: Guest
  • Posts: 513
  • Joined: 04-October 08
  • Gender:Male
  • Country: United States

Posted 15 January 2011 - 03:03 PM

I just got a compression test at REN Motorsports in San Mateo:
2002 AP1 w/ 50k miles (test-driving today)... 15 ft above sea level.

#1: 175
#2: 150
#3: 175
#4: 165

Are those good? Bad?? I'm worried they aren't close to the 240s? But they look consistent.

What do you think?

Thanks!

This post has been edited by HarryD: 15 January 2011 - 09:30 PM

Posted Image

#2 User is offline   RedCelica 

  • View gallery
  • Group: Moderator
  • Posts: 12,535
  • Joined: 08-April 02
  • Gender:Male
  • Location:Raleigh
  • Country: United States

Posted 15 January 2011 - 03:17 PM

yeah they look a bit low...a brand new motor might get 240s...most AP1s I've seen though are at least 200+
2002 Sebring Silver AP1 - OEM hardtop (gutted soft top) with Izzy race mounts, Ohlins DFV, hard dog rollbar, comptech adj front sway, neuspeed x-brace, buddyclub fia seats, pryotect harnesses, k&n fipk, jdm headlights, Berk 3" headerback, custom front brake ducting, TR C3 17x9 w/ 255/40/17 RS3s

Posted ImagePosted Image

#3 User is offline   s2cho 

  • Group: Guest
  • Posts: 1,832
  • Joined: 13-October 10
  • Gender:Male
  • Country: United States

Posted 15 January 2011 - 04:01 PM

Quote

yeah they look a bit low...a brand new motor might get 240s...most AP1s I've seen though are at least 200+

first time i saw a ap1 under 200's too....
i wouldnt buy it lol

the guy who owns it probley knows this too and wants to get rid of it

#4 User is offline   Disgustipated 

  • Group: Guest
  • Posts: 2,665
  • Joined: 17-December 09
  • Gender:Male
  • Location:SoCal
  • Country: United States

Posted 15 January 2011 - 04:19 PM

Don't buy it. Anything under 200 = bad
Sold: 2002 AP1 Honda S2000, Sebring Silver Metallic 07/09/2011
Sold: 2005 Acura TL 6-speed manual - 250 whp, fun DD
RIP 08/22/12: '89 BMW E30 in Delphin Metallic with S50 M3 swap
Sold: Evo 8 RS - 473 whp/398 wtq. E85. 3000 lbs.
Next: ???

#5 User is offline   HarryD 

  • Topic Starter
  • Group: Guest
  • Posts: 513
  • Joined: 04-October 08
  • Gender:Male
  • Country: United States

Posted 15 January 2011 - 05:18 PM

Quote

Don't buy it. Anything under 200 = bad

Will do. I knew off the top of my head the range was above 200,
but the mechanic there said it looked OK since it was consistent,
and my Honda dealer mechanic said the same thing--not to worry about it.

Now I'm worrying about it and will probably walk away I guess.

This post has been edited by HarryD: 15 January 2011 - 05:19 PM


#6 User is offline   s2cho 

  • Group: Guest
  • Posts: 1,832
  • Joined: 13-October 10
  • Gender:Male
  • Country: United States

Posted 15 January 2011 - 05:27 PM

Quote

Will do. I knew off the top of my head the range was above 200,
but the mechanic there said it looked OK since it was consistent,
and my Honda dealer mechanic said the same thing--not to worry about it.

Now I'm worrying about it and will probably walk away I guess.

you know how there are some factory beasts that come with actually like 220-230 to the wheel?
maybe this is a factory whimp that comes with like 160 or 170hp haha xD

but compression test dosent mean hp but it does mean healthy engine lol

#7 User is online   Moddiction 

  • View gallery
  • Group: Vendor - Starter Primary
  • Posts: 26,430
  • Joined: 15-October 07
  • Gender:Male
  • Location:Mountain Top, PA
  • Country: United States

Posted 15 January 2011 - 05:31 PM

It can read low depending on the gauge or if done when cold and not WOT.
Having said that there should not be 25 psi difference between cylinders. That is the biggest thing to look for when doing a compression and leakdown test.
Cylinder 2 is very low there. Don't buy that car unless it is super cheap and have intentions of putting new engine in there possibly.
Posted Image[/url]

#8 User is offline   IlluminatiDre 

  • Group: Guest
  • Posts: 78
  • Joined: 04-May 10
  • Country: United States

Posted 15 January 2011 - 06:53 PM

I plan on buying a s2k first week in feb, i plan on having the dealer do.a compression test before i buy. I wanted to know doesnt elevation effect the results too?

This post has been edited by IlluminatiDre: 16 January 2011 - 03:10 AM


#9 User is offline   J-GO 

  • Group: Guest
  • Posts: 334
  • Joined: 21-May 10
  • Location:Annapolis, MD
  • Country: United States

Posted 15 January 2011 - 08:05 PM

Constancy is key when doing a compression test.

However those numbers do sound low though. 170ish seems to be the number that most 3mm head gaskets give you.

Looks number 2 might be potentially hurt.

#10 User is offline   MTZ 

  • Group: Guest
  • Posts: 31
  • Joined: 01-September 10
  • Country: United States

Posted 15 January 2011 - 09:24 PM

dont forget elevation

#11 User is offline   RedY2KS2k 

  • View gallery
  • Group: Guest
  • Posts: 5,296
  • Joined: 25-November 01
  • Location:Delaware, OH
  • Country: United States

Posted 15 January 2011 - 10:32 PM

Quote

dont forget elevation

OP stated 15 feet above sea level...

#12 User is offline   BuckyN8 

  • Group: Guest
  • Posts: 776
  • Joined: 22-February 10
  • Country: United States

Posted 16 January 2011 - 02:46 AM

Good info to know.

#13 User is offline   DFWs2k 

  • View gallery
  • Group: Guest
  • Posts: 14,634
  • Joined: 08-October 05
  • Gender:Male
  • Location:Denton, TX
  • Country: United States

Posted 16 January 2011 - 04:25 AM

Get em to knock at least 2 grand off the price and you will be good to go

Quote

"Your front fenders look like they served 2 missions in 'nam. It looks you rolled them with a 7-week-old Monster can filled with rocks. I think the Cryptkeeper's hands have less wrinkles and jagged edges in them."


FS thread: Built engines, turbo kits, Okadas, ap2 rear wing, Alaniz built head #0195, blockoff plate, misc. stuff, CHEAP! OBO!
480/312 @ 16.5 psi Build
Posted Image

#14 User is offline   nc987 

  • Group: Guest
  • Posts: 120
  • Joined: 27-November 10
  • Country: United States

Posted 06 March 2011 - 04:12 PM

Know this is an old thread, but I just bought a 2003 with 60k miles on thanksgiving and during the inspection when the car was traded in the numbers came out as....

#1 215 psi
#2 215 psi
#3 220 psi
#4 215 psi

I am assuming these are fairly normal numbers for my model and mileage.

#15 User is offline   spike109u 

  • Group: Guest
  • Posts: 110
  • Joined: 10-July 10
  • Gender:Male
  • Country: United States

Posted 06 March 2011 - 05:02 PM

 nc987, on 06 March 2011 - 04:12 PM, said:

Know this is an old thread, but I just bought a 2003 with 60k miles on thanksgiving and during the inspection when the car was traded in the numbers came out as....

#1 215 psi
#2 215 psi
#3 220 psi
#4 215 psi

I am assuming these are fairly normal numbers for my model and mileage.


Yup, those numbers indicate a healthy engine.
Posted Image
Posted Image

#16 User is offline   camuman 

  • View gallery
  • Group: Guest
  • Posts: 7,899
  • Joined: 24-October 02
  • Location:South Florida
  • Country: United States

Posted 06 March 2011 - 05:12 PM

OP possibly the test was done with out the gas pedal floored.
weekend warrior - 05 S2k: turbo TUNE @ 14PSI 450whp/295wtq dyno dynamics - 12.3@121
daily destroyer - 09 Jeep SRT8: lumpy cam/longtubes
Wifes Daily - 2015 Durango Citadel - MPG's for days
Wifes Weekend warrior - 2001 Ford F250 Supercab 5.4 gas motor - SLOW ASS f@#k but reliable

#17 User is offline   CU03BLKS2K 

  • Group: Guest
  • Posts: 476
  • Joined: 07-October 09
  • Gender:Male
  • Location:Clemson/Florence, SC
  • Country: United States

Posted 06 March 2011 - 09:45 PM

 camuman, on 06 March 2011 - 05:12 PM, said:

OP possibly the test was done with out the gas pedal floored.


That does make a big difference. I did a compression test not too long ago with my 03 with 65k miles and for the first 2 cylinders I realized I wasn't pressing the gas pedal down. My numbers were still in the low 2's, but when I redid them all correctly, it jumped up to between 235 and 245.

#18 User is online   Moddiction 

  • View gallery
  • Group: Vendor - Starter Primary
  • Posts: 26,430
  • Joined: 15-October 07
  • Gender:Male
  • Location:Mountain Top, PA
  • Country: United States

Posted 06 March 2011 - 10:07 PM

 nc987, on 06 March 2011 - 04:12 PM, said:

Know this is an old thread, but I just bought a 2003 with 60k miles on thanksgiving and during the inspection when the car was traded in the numbers came out as....

#1 215 psi
#2 215 psi
#3 220 psi
#4 215 psi

I am assuming these are fairly normal numbers for my model and mileage.



Yeah nice and consistent which is key. Could have been done on a colder engine or not pushing gas pedal down which usually shows a little lower numbers as well so I would be happy with them!

Ads by Google   S2KI

Share this topic:


Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users