RG500 Jetting

Well I have abandoned getting air filters for the 500, just can't get the jets right! I did look at trying to make some velocity stacks for 58mm external diameter carbs but nothin was available that was very short - due to lack of clearance with the fairings. So I am back to trying to setup the carbs better on the 500. Basically the symptom is : Good idle and pickup off idle As soon as you get mid range power dissapears (about mid throttle) and then you need to ease is above 8k rpm at which point it makes great power to the red line. I thought I was running too rich in the mid range so I purchased some needle jets p-4 and p-8 as apposed to the q-2 needle jets that are in there.

After changing the needle jets I can come to the conclusion I must have been running lean as the bike gets better with a richer setup. I am now running 240 main jets and P-8 needle jets and I will probably try going up to 250s just to see. On the other hand did the 120k kms service on the Daytona, all fluids except fork, sparkplugs, plus valves and throttle body synchro. All is well the valves were all in specification.

Service Daytona, Street plus RG500, 350

Ok loads of stuff going on in the garage. I completed the 120k kms. service on the Daytona, the valves were perfect. Small leak in the left side lower part of the radiator, so used some Barrs to block it up. This is a first and I hope it doesn't bugger anything else up! I didn't change the brake fluid as it was changed a year ago when I serviced the calipers. Throttle bodies were synched OK. The street had it's 30k kms service, although I didn't do the valves but everything eslo was done, filters, plugs, fluids, etc... I purchased at great expense some needle jets from Steve motocarb in the UK, with the vague hope trying to lean out the carburation of the RG 500. Nothing seems to do it, I think I will go back to running no filters and play with the needle jets to try and get it good with no filters. Seriously considering selling it if by the autumn I haven't moved forward. The 350 has had a carb rebuild and the reeds looked at which are not sealing correctly. Even with new reeds! This doessn't affect anything at revs. but will affect starting etc.... The FZR started up after a couple of seconds on the starter, running OK although the carbs -pilots need a clean.