Re: [MBZ] Compression measurement

2008-12-10 Thread Peter Merle
The check valve is at the gauge end! This is riduculous as you say. Chinese piece of crap that I paid a lot of money for. PEter 2008/12/11 Jim Cathey <[EMAIL PROTECTED]> > I did some calculations and the volume of the pipe leading up to >> the gauge is about 13.8 cm3! >> > > So what? That's wh

Re: [MBZ] Compression measurement

2008-12-10 Thread Jim Cathey
I did some calculations and the volume of the pipe leading up to the gauge is about 13.8 cm3! So what? That's why there is a check valve in the part that screws into the head. If there isn't, the gauge is of course a POS, as you've calculated. But even my $18 Harbor Freight diesel compression

Re: [MBZ] Compression measurement

2008-12-10 Thread Mitch Haley
Wow. I believe that all the threaded adapters in my Harbor Freight gauge set have check valves in them. Putting the valve in the gauge head with a hose upstream from it is insane, unless it is intended for tractors with 8" diameter pistons. Mitch. ___ htt

[MBZ] Compression measurement

2008-12-10 Thread Peter Merle
After having bought a diesel compression gauge - not the motometer one unfortunately- I find I always got low compression values - around 16 bar. The instrument has a long ( 430 mm ) 1/4 " ID pipe going to the non-return value which is at the base of the gauge. Well I did some calculations and the