I am still trying to get my jetting dialed in after swapping the stock exhaust for Tygas. Everything seems to be running fine, except for a fair amount of spooge out the exhaust cans. It doesn't seem overly rich when riding, and I didn't notice a whole lot with the stock system. How much would be considered normal on a properly jetted machine? Thanks in advance.

Is your 'non-stock' exhaust / chambers brand new or have they been used before?

The reason I ask is because if the pipes have been used before, Excess oil can build up over time in the chambers, which if not drained or removed, will gradually emerge from the cans (or the manifold joint) when the engine is running.

Even on a perfectly set up 2 stroke, the oil coming in with the fuel (or injected separately) is never burnt 100% completely during each combustion cycle and this oil will move into the pipes.

It then has to come out somewhere.
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Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30

The exhaust and cans are new. It was never this bad on my old race bike (12 years ago, dogfights, premix), but the current bike runs fine (Tygas, oil pump). I was considering dropping the mains down after a plug test. At least it isn't like my old TZR that had a float problem, and I was able to give riders directly behind me a cold shower at the start of a ride.

What's you plugs look like?
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

coolhand91 wrote: How much would be considered normal on a properly jetted machine? Thanks in advance.

None, it should look something like this.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread

It is definitely not that clean, Fontyyy. Looks like my weekend project will be jet swapping. The plugs are on the blacker side as well, not to mention my car gets better mileage.

Make sure the oil pump is set correctly. It may not even be a jetting issue. The pumps often tend to over-oil in my opinion, probably in the interests of standard longevity.
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Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

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