Mud-club

Vehicle & Technical => Range Rover => Topic started by: wizard on April 30, 2010, 08:05:13

Title: 3.5 Classic compression ??
Post by: wizard on April 30, 2010, 08:05:13

Hi
I am going to check the compression on Mrs wizards 1989 3.5 Rangie sometime today.
But not having a Haynes manual for it, I dont know what a good reading would be. I would guess around 150psi

Does anyone know what I should expect.

regards
wizard

Title: Re: 3.5 Classic compression ??
Post by: hairyasswelder on April 30, 2010, 12:04:00

From memory 150 is around the lower mark.  Around 170 is good but if they are even etc....

Title: Re: 3.5 Classic compression ??
Post by: Range Rover Blues on May 03, 2010, 03:06:55

Yeah, 170/185 but mostly well within 10% of each other.

If you get 205 like me then start checking what mods have been done ;)

Title: Re: 3.5 Classic compression ??
Post by: wizard on May 03, 2010, 11:39:38

Heres what I got

cyl 1 = 120
cyl 2 = 150
cyl 3 = 150
cyl 4 = 145
cyl 5 = 150
cyl 6 = 160
cyl 7 = 145
cyl 8 = 148

I bought a litre of of this stuff AMETECH (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=350319825821&ssPageName=STRK:MEWNX:IT).
I originally thought it was a bit of a snake oil type treatment, but after reading about it thought it was worth a shot.

I'll post up the compression readings once i have covered a 1K miles or so.

Regards
wizard

Title: Re: 3.5 Classic compression ??
Post by: Range Rover Blues on May 04, 2010, 00:42:22

Hmmmmm, watching with interest.