Recent content by skippy59

Just to clarify things: (a) I personally have always called it bore spacing or bore centers however google lists 3 times as many hits using "bore pitch" as "bore spacing" and most forums I frequent, use "pitch" so in order to not cause confusion I used "pitch". (b) You are right in that it is...

Thanks Fred, yes that'd work.

I'm curious as to the interchangeability of parts between the Gen 1 & 2 as I love modifying things. If the bore centers are the same between Gen 1 & 2 then there's every chance you might be able to use a Gen 2 head on a slightly bored out Gen I engine. Not all the way to 90mm like the Gen II but...

Fantastic if you can and thanks.

Thanks again for measuring this Jedi. Regarding the exhaust ports, it seems that unlike the straight ports of the Gen I, the Gen II's have exhaust ports that swing outwards.

That's the easiest way and works with a tape measure but for accurate results a vernier must be used and unfortunately due to their design, verniers can't accurately measure one side of one bore to the same side of another bore.

Fantastic and thank you. Just out of curiosity, how did you come by this measurement? I've since bought a Gen II head gasket to measure it (when it arrives) and then compare the 2 (gen 1 and 2). I have to rush off to work now but I'll get back to you regarding this. Once again thanks. Phil

Thanks Zeus36, I'll wait and see if someone happens to tear down their engine and can get the measurement and if not I'll end up buying a junk set of engine cases on ebay. I'm prepared to pay to cover the time taken for taking these measurements. Thanks

Thanks Zeus36, yes it's the bore pitch that I am looking for. Unfortunately the pitch is something that is rarely listed anywhere so I'll just have to wait for someone that happens to be tearing down an engine. I'm also emailing vendors of second hand engine cases on Ebay trying get this...

Hi, I'm doing a bit of engine research and have a couple of questions regarding the Gen I and II engines. (1) Does anyone know the Gen I cylinder bore pitch? (2) My understanding is that it is the same as the Gen II bore pitch but I may be wrong... i.e. the Gen II has a bigger bore but the pitch...

Hi, I'm doing a bit of engine research and have a couple of questions regarding the Gen II engine. (1) Does anyone know the cylinder bore pitch? (2) My understanding is that it is the same as the Gen I bore pitch but I may be wrong... i.e. the Gen I has a smaller bore but the pitch is the same...