Those who can take X carb and make it work on Y bike must have some magical skills or just a ton of experience or both.Īnyway I found that all the bikes that had a TM30 carb were very different in every way to mine. But how people select a different carb from scratch and decide to use it or install it on a different engine with no reference point or baseline is above me. I get the whole need for jetting changes when you have a modified or tuned bike, and if you bolt on different intake or exhaust systems etc. At one point I was really dissolutioned with it all, as I couldn't find a directly comparible bike to use for reference against mine. I think I've got it sorted in that my TMX30 8006 which is the aftermarket carb and purchased from Allen's originally should be ready to fit and hopefully run better than it did before. I unfortunately had forgotten to check in here as the last few weeks up to Christmas were manically busy at work. Topham in Germany is usually a helpful source of info on the less-common Mikuni carbs and seems to stock a lot of parts which others don't.Ī huge thanks for such an informative reply. Unfortunately I couldn't find an 'exploded' view of the TMX30 (or of the similar TMX27) on the internet, but one may exist.
This may get expensive unless you can do the work yourself.ĭo you have any idea which parts may be missing from your carb? It may help if you post a photo of the carb dismantled with all parts laid out neatly. However, you would likely have to take the plug from another carb and then bore and tap a hole in the float bowl. It may be possible to modify the float bowl to fit a large plug to give access for changing jets - there is a boss cast in which looks like it would accept such a plug. Main jet and pilot jet are just common Mikuni types.
There is a good chance that the 5EL68 or any of the OEM needles could be made to work with your set-up if you fit an atomiser of suitable size. If it is a Yamaha or Suzuki OEM version, it will likely have a different needle (DT230 carb has 6DHY40, TS200R carb started with 5EL68 then moved to 6DHY36).
If your TMX30 is the standard aftermarket version, it should have a 5EL68 needle. The TMX30 uses 622-series atomisers, which are available in sizes N4 to O6 (see. Your own jetting will depend on how freely your air intake system flows, which may differ from some/all of the bikes listed above. I think the TS125R might also use the same carb (or at least one of the same pattern). For 'ballpark' settings, you can look at the jetting specifications for bikes which use the TMX30 as standard.
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