Omega Owners Forum

Chat Area => General Car Chat => Topic started by: Webby the Bear on 14 February 2013, 20:59:25

Title: Compression Test Results :)
Post by: Webby the Bear on 14 February 2013, 20:59:25

Hi guys,

As above, broke out the compression test kit tonight  8) only PITA was getting those violet relays out for the pump and injectors  :( stuck solid they were... but I don't give up that easy  8) ::) Even managed to get to pot 6 with no problem :):)

Anyway ::)...

Dry test results:

Pot 1 - 215psi
Pot 2 - 210psi
Pot 3 - 210psi
Pot 4 - 215psi
Pot 5 - 205psi
Pot 6 - 210psi

SADLY I went to do the wet test, just for completeness......................and i've not got any oil lol  :'( what a mistaker to maker  ::)

But what do we think of the results.... i'd say they were pretty good and definitely a good consistency.

ps, car had been on a run today and all spark plugs looked the same.....

(http://i1226.photobucket.com/albums/ee402/webbybear1/mysp_zpsa0950eb6.jpg)

Title: Re: Compression Test Results :)
Post by: Kevin Wood on 14 February 2013, 21:00:35

No problems there, and no need to wet test IMHO. :y

Title: Re: Compression Test Results :)
Post by: Webby the Bear on 14 February 2013, 21:01:07

Quote from: Kevin Wood on 14 February 2013, 21:00:35

No problems there, and no need to wet test IMHO. :y

Good lad, cheers Kev.... very pleased!!!  :y :y :y :y

Title: Re: Compression Test Results :)
Post by: Entwood on 14 February 2013, 21:01:46

I'd be well happy with those and look no further .. the small differences are well within "operator reader error" anyway .. :)

Title: Re: Compression Test Results :)
Post by: Webby the Bear on 14 February 2013, 21:03:58

Quote from: Entwood on 14 February 2013, 21:01:46

I'd be well happy with those and look no further .. the small differences are well within "operator reader error" anyway .. :)

cheers mate... healthy engine!  :y :y :y :y

Title: Re: Compression Test Results :)
Post by: dbug on 14 February 2013, 22:07:03

Yep good results mate and well consistent ( and above the 158psi calculated by another OOFer  ::) ::) )  :y

Title: Re: Compression Test Results :)
Post by: Webby the Bear on 15 February 2013, 11:30:40

I checked the Haynes manual and official figures say (although how correct the Haynes is I have no idea lol) are as follows....

each cylinder to be betweeb 174 and 218 psi.

each cylinder to have a difference of no more than 15psi to its brothers and sister.

 :y

Title: Re: Compression Test Results :)
Post by: Abiton on 15 February 2013, 11:42:50

Good stuff fella.

Nice to get results that suggest ones engine is basically as good as new, in fundamental ways.  :y

Title: Re: Compression Test Results :)
Post by: Marks DTM Calib on 15 February 2013, 12:01:08

The wet test is a pretty shit test anyway....unless you can get the exact correct same volumes of oil in all the cylidners and get it onto the rings (pretty much impossible with central spark plug holes).

Title: Re: Compression Test Results :)
Post by: Webby the Bear on 15 February 2013, 12:31:46

Quote from: Marks DTM Calib on 15 February 2013, 12:01:08

The wet test is a pretty shit test anyway....unless you can get the exact correct same volumes of oil in all the cylidners and get it onto the rings (pretty much impossible with central spark plug holes).

lol i did hear that mark..especially so if the piston is dished as it wont get to the rings anyway  :y

Title: Re: Compression Test Results :)
Post by: Marks DTM Calib on 15 February 2013, 12:55:30

And if you dont get the exact quantity in each you get big differences.

Plus pretty much all piston tops are shaped with either valve pockets, combustion chambers etc etc....

Title: Re: Compression Test Results :)
Post by: Omegatoy on 15 February 2013, 20:25:12

figures are good,take it you did them with WOT? :y

Title: Re: Compression Test Results :)
Post by: Webby the Bear on 15 February 2013, 22:05:18

Quote from: Omegatoy on 15 February 2013, 20:25:12

figures are good,take it you did them with WOT? :y

Indubitably  :y