Compression Spec.

[RustySkull]

Hi friends,

I've done a little search on here and Google and my Haynes Book but I can't find the spec and min Compression in Bar/psi for a MK2 1.1i

I've done a test and I think it's quite low I'd of said it should be around 13-15 Bar myself but they've all came around the 7 mark un-oiled and 9 oiled.

This seems very low to me, although it runs fine and I'm not worried about it.

If anyone knows the specs I'd be greatful :fcuk:

Thanks Guys :)

[saxo-parts]

compressions are low at that and if they go up that much when oiled i'd say the rings/bores are starting to get tired. tested a VTS the other day and its was up around 170 psi dry whereas yours are at around 103psi dry and 132 wet

[RustySkull]

compressions are low at that and if they go up that much when oiled i'd say the rings/bores are starting to get tired. tested a VTS the other day and its was up around 170 psi dry whereas yours are at around 103psi dry and 132 wet

Yeh I knew the rings are the problem as they did go up with oiling, I tested my MK1 today and man, it's got none at all one the left two and 3 and 4 bar on the right two haha.

So you're saying the spec is around 170psi? I know it'll never be that as it's on 60,000miles but I just wanted to know what it should be.

Thanks mate.

[saxo-parts]

the 170 was on a 89k engine!!! shame we found 2 that had less then 30 where the head gasket had split lol, old Land Rover 2286 petrols used to run as low as 120psi even when new

[AndySAXO]

170 is about normal for a vts engine to be fair!

my old vts engine, at 80k miles was only 150 psi!

does sound like the rings are worn abit dude.

[RustySkull]

Yup and I have to remember one of the valves is eroded slightly but she's got a good few more miles in her yet poor car lol, Thanks for the help guys.