Prechamber volume

[doandevil]

Guys

I wanna do some combustion experiment and calculation heat release with Lister CS 6/1, but i don't know the volume of the prechamber....it's quite difficult to measure.....does anyone here got information or  know how to measure ?

Thanks

[somian]

Normal way of doing this job is to put a piece of glass with a hole in it over the thing to be measured, and then add oil or water 1cc or whatever volume at a time until it is full. Oil is kinder to the injector than water. Obviously you have to take the head off first. In the instance of a CS, there are potentially two volumes, CR valve in and out

Ian

[dieselgman]

Sounds right somian... look up cc'ing combustion chambers on the web - probably under racing engine builds and you should find ample description of good ways to measure that volume with precision. Calibration fluid is generally a light colored oil.

dieselgman

[cujet]

If I remember correctly, mine was about 72cc's. Not including the volume of the piston to head and recessed valves.

[carlb23]

mine measured 74 or 75 cc including the valve relief

[Horsepoor]

One of heads measured 73cc and the other 75cc - thats probably pretty good Indian control, I guess.

[doandevil]

mine was 75cc also....she came from India...... ......after comparing with you guys here i felt more confident...thx