Interesting oil mix v EGT test

[drunkmunkey6969]

Rossi.....did you make anymore progress on this?

In the interests of progress, i'd be willing to offer free dyno time to you (or somone else more local if we are to far away for you) if you wish to get involved in an oil% experiment?

All we need is a willing volunteer with a scooter, a temp gauge, and willingness to feck about adjusting oil mix and jetting, and then dyno testing over and over until we have a table of results.

I think the basic test should be as follows:

Straight forward temp, bhp and fuel/air mix test at 2%, 3%, 4% & 5% oil/fuel mix, with no other changes. We'll see how the running temp is affrected, how the bhp is affected, and use the gas analyser to see how lean/rich fuel mix is affected by varying oil ratios.

Moving forward, we can adjust jetting up or down at ceratin ratios to see what happens....eg - if 2% runs cool, but bhp is down, and 5 % runs hot, but bhp is up....then at 5% we can upjet to see if we can maintain bhp but bring temp back to acceptable levels etc.

Anyone want use of the dyno whilst they conduct the experiment???

[rossi46]

Rossi.....did you make anymore progress on this?

In the interests of progress, i'd be willing to offer free dyno time to you (or somone else more local if we are to far away for you) if you wish to get involved in an oil% experiment?

All we need is a willing volunteer with a scooter, a temp gauge, and willingness to feck about adjusting oil mix and jetting, and then dyno testing over and over until we have a table of results.

I think the basic test should be as follows:

Straight forward temp, bhp and fuel/air mix test at 2%, 3%, 4% & 5% oil/fuel mix, with no other changes. We'll see how the running temp is affrected, how the bhp is affected, and use the gas analyser to see how lean/rich fuel mix is affected by varying oil ratios.


Moving forward, we can adjust jetting up or down at ceratin ratios to see what happens....eg - if 2% runs cool, but bhp is down, and 5 % runs hot, but bhp is up....then at 5% we can upjet to see if we can maintain bhp but bring temp back to acceptable levels etc.

Anyone want use of the dyno whilst they conduct the experiment???

Hi Dan sorry, cant do it at the moment I have 5-6 races coming up over the next couple of minths so will be out of the country quite a lot sorry mate

[DMC]

I used to run my tuned ts on 33:1. the oil was putoline, the grade down from MX5. After thrashing it round the country for 2 years we striped down the crank and the big end pin was pitted I never had a filter on the carb (who did in the early nineties) and the bore had little sign of wear.

I know this might be throwing a spanner in the works, but it is something else that needs considering.