VR6 Compressions

[macca 0]

Just did a compression test on my VR, 122k miles, with the clark DIY tester.

 

1= 150 with oil in cyl up to 190

2=160 as above 185

3=170

4=190

5=170

6=190

 

Now 1&2 are looking like they need rings, how long can they go for before its critical?

 

How big a job is it, is it worth doing, could sell the car cheap?

 

How much will it cost for a DIY job?? head rings followers etc.

 

Will the block be worth saving? how robust are they??

 

Any one else had simlar readings and results?

 

 

Thanks for any input

Cheers Guy, looking for a loan :lol:

[Scott 0]

To be honest compression figures are only used as a guide of the engines condition as they can vary quite a bit just from the way you are doing the test....

 

I would only be concerned if the engine sounds rough, burns oil (can be seen from exhaust pipe on acceleration) and idles poorly.... otherwise leave it alone.

 

Did you have reasons for doing the test?

 

I did a compression test on mine a little while back and got around 160 - 170 psi according to the guage yet the engine has been rollered at 192bhp... standard. So there is pretty much nothing wrong with it - it uses half a litre of oil per 1000 miles and is smooth when accelerating hard with no smoke.

 

Dont forget that the valves can lose their 'seal' and leak compression hence possible low readings.

 

My 2p

 

Scott

[macca 0]

As posted befor I was loseing a bit of water, and thought with the milage on it i would have a look at the plugs and then do a compression test while the plugs were out. Turns out i have leak from the rad which explains water loss, but those readings show a 20% difference and for the compression to come back with oil in the bore makes me think worn rings.

 

Hoping for as little £££ as possible, runs well, no real oil use, ticks over OK.

 

What do you guys think??

 

Cheers.

[Scott 0]

Hoping for as little £££ as possible, runs well, no real oil use, ticks over OK.

 

Fix the water leak and leave the engine alone :lol: