HS30-H

Original ones were 'Pot Metal' / 'Mazak' castings. Like most of the emblems, they were later changed to plastic - but they were originally metal. The metal one on my ZG is starting to show its age; its deteriorating in the way that Mazak loves to - pimpling up and going dull........... Like me. Alan T.

Hi Steve, Just PM'd you back.

You should have said that you were talking about the 'Short Case' R200 rather than the 'Long Case' R200 in the beginning. It would have saved time. But I still don't understand the question. The internal parts of the R32-type R200 are not designed to fit in the earlier ( long case ) R200, and you would struggle to fit the complete R32-type diff in your Z. What is it you are thinking of doing exactly? If you want to have an LSD-equipped R200 with a suitable ratio that is a virtual bolt-in for your early Z, then I recommend that you look for the earlier long case type and forget about the one in your pictures.

Straight-on shot with the rear cover off:

A close-up shot of the Ring gear and LSD housing:

Lots of Japanese domestic models got the R200 with LSD in various ratios, and they don't have finned rear covers. Any diff you find could have been fitted with either a Nissan option LSD unit, or a NISMO LSD unit, or one of several other aftermarket brands of LSD. You never know. Of course, if you are buying in the USA this ls less likely, but not an impossibility. To be 100% sure - and to identify the ratio at the same time - take off the back cover. If the vendor does not want to do this, then I would have to say that he is not maximising the sales potential of the item. Here's a pic of one of my LSD-equipped R200's with the back off:

Hmmm, I see you are blitzing the Z-related web forums with the same basic post. You'll be getting pretty much the same answers in other places too. You might like to use the "SEARCH" facility on this site. You will find that it will link you to a great wealth of useful information. Alan T.

Eric, I don't want to appear rude, but you are buying a ticket for a train that departed many years ago......... O.S.GIKEN have had many requests over the years to reproduce these heads, but its not going to happen anytime soon. Most of the tooling and casting patterns were made from hardwood, which has warped and deteriorated over the years. Remaking everything would cost a fortune, and the heads themselves would also cost a fortune per-unit. I'm afraid there are very few people who would be willing to shell out for what they would cost............. we are talking many thousands of US Dollars each ( and I mean many. I met the vice-President of O.S.GIKEN in Japan some years ago, and asked him all about it. Its clear that this is a project that they are not currently interested in reviving, and they have not got any unsold kits stashed under any workbenches anywhere either. They make some "O.S.Classic" parts for older cars ( piston kits, clutch kits etc ) but they don't have any plans to go any further than that. By the way - the actual code was "TC24-B1" - not "TG", which was a misprint in the Japanese magazine article that I supplied to Errol at DatRats. Alan T.

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, I never knew we had TWO street sweeping machines in London! They must have been hiding the other one........ Couldn't see a thing except the backs of a lot of heads. Police reported an estimated attendance figure of around 500,000 people. Cars were pretty loud in between the buildings to say the least. Complete traffic chaos all day and most of the night due to the closed-off roads....... Now they are talking about a full GP in London. It will never happen, of course - its just Bernie being clever and putting pressure on Silverstone and the BRDC.