Precombustion chamber interchangeability

[quote="TOGNOT" post=222214]I’m still looking for a precombustion chamber for my D2 3J. I have a couple leads, but in the meantime I wondered :

Are there other prechamber that maybe don’t fit ( exactly) but would with a little machine work ? Several companies make after market chamber for the bigger cats, that’s why i ask.

Thanks for any ideas.[/quote]

This is totally from memory so I can't verify any of it but I read it on the bulletin board in the past. Someone was having similar problems locating precom for a d2 and it was suggested that a d4 chamber could be turned and rethreaded to fit a d2. I don't know if this was d4400 to d3400 or if the u series stuff will work also. I can't give you the thread pitch either. I did a couple of searches with the search option and couldn't find anything. Maybe some more knowledgeable will help out

Thanks for the picture. I found a drawing online for the part number you listed earlier ( 8B0493 )

Neither the diameter nor the thread size is correct for the 8B0493 as shown in the drawing.

I think I Have some Good D2 chambers Enroute . But to follow up onthis topic :

Measuring the D2. Head :: prechamber “bore” at the top about 2 1/8”. Distance from combustion chamber to top Of prechamber sealing surface :: 4.25 “


When the new/used chambers arrive I Will Document the dimensions