Hey all,

Can you run a comp test on all cylinders when cold? I'm just about to get a gunson tester but cannot run the car to warm her up because currently without ecu (in for mods). Would the reading be lower but should be consistent across bores?

Oh, forged pistons, might make a difference to above answer

 

answer is idealy needs to be warm.

you may get inconsistencies accross the cylinders.

But if you have a serious issue then will show up hot or cold.

what are your reasons to want to do it?

 

Hmm, in that case I think I'll check it cold and warm, then record results. Warm will be a few weeks away though.
Well, I have blue smoke on startup sometimes, once a rather large cloud but that's when she wouldn't start first time. It's prob me just being worried over nothing but I've read so many issues with 2.5's and ringland failures...
I've got a mini camera as well to check bore condition which I'll do on monday once I borrow a work laptop.

Last tune I had 1.8 bar peak and 1.7 held and she went like stink but on way home didn't seem so good...
Also think she might have lots of blow through the oil ways, especially the crank breather. Ended up getting a oil separator from usa so it feeds oil back into sump...but also makes me wonder if issue causing this blow by...

 

Well, done the tests and really happy with the results....cold engine as still no ecu at present so cannot start her.

Cranking for 10 seconds per cylinder:
1 = 10.7
2 = 10.8
3 = 10.8
4 = 10.5

What a pain it is to get the gunson to screw in on the boxer engine...but worth effort. Must be mapping issues as to why thought had problems...I know boost cut was set at the wrong level which I've now adjusted.