What 2 Stroke Oil are People Using on their RB Kits?

[Lamaddict]

Further to another thread and cranks on RB kits having a lack of lubrication and failing perhaps it's an idea to try and track the 2 stroke oils that are working or not as the case maybe. This may independently help people.

Something like:

The RB kit cc's -

Miles rode -

Failures -

% 3 or 4 -

Any other observations -

TYPE OF OIL -

[jonashford]

RB22

1800 miles, 200 miles traveled that day before breakdown, 50 miles since last fuel up.

Big end failure/seizure at an extreme high temperature, travelling at 60 -65 mph, Mikuni 35 tmx, 330 main, 6 slide, 57 needle on top clip ,

4% rockoil synthesis

[johnd]

The RB kit cc's - 225

Miles rode - +/- 3000klms

Failures - none (2*clutches

% 3 or 4 - 4%

Any other observations - Very low comp cylinder head.

TYPE OF OIL - Denicol syn100 (kart racing oil)

Crank= MB alpha 58,

Piston= MB racetour.

[eibargum]

RB230, Putoline MX5@3%, 4% when running in. 5,000 plus miles, Mikuni 30mm PJ, no trouble with the kit but did twist my crank early on when using a unlightend Indian flywheel, had it re-pinned by Chiselspeed and flywheel lightend, been fine since .

[nastro azzurro]

RB 225

MB Alpha crank

MB race tour piston

Mikuni TMX 35

Augusto timing box

Just under 4000 miles

Putoline MHX @ 2%

No problems at all................................so far!

[rbgaz]

rb 230

60mm af crank

done about 9000 miles

2% oil

mhx and rock oil

[JOHNNY]

RB270
64 stroke crank
Bultaco 73 mm piston
Tmx35
330 main
56 needle middle clip
25 pilot
Mtec box
Motul 800 4%

[jonashford]

Thought Id update with my current spec, since may crank seizure on way home from kelso. Crank & barrel replaced by AFs at a reduced price

2000 miles covered since new barrel & piston & rb conrod & bearing added

Mikuni 35 tmx, 290 main, 6 slide, 57 needle on 1 from top clip, 17.5 pilot jet, Cam lam powerjet 3/4 turn out,

4% rockoil synthesis, Franspeed Race exhaust

Timing at 17 degrees

Changed gearing from LI150 to std Indian gp200 loads of fun easy to ride.

Using my MRB cht gauge the engine runs at 150 - 160c at around 65 mph. 170 -190c at 75 to 80 mph, on a recent journey on the motorway held at around 75 - 80 for 6 miles went as high as 200 c but no problems, just leaking gearbox oil through a small crack in the casing,

Egt gauge eats probes so gave up on that.

No overheating problems any more yippeeee!

[Bilko]

....... just leaking gearbox oil through a small crack in the casing...

No overheating problems any more yippeeee!

Where's the leak from?

My casing cracked too, where one of the bottom cylinder studs was.

[mnpes]

Thought Id update with my current spec, since may crank seizure on way home from kelso. Crank & barrel replaced by AFs at a reduced price

2000 miles covered since new barrel & piston & rb conrod & bearing added

Mikuni 35 tmx, 290 main, 6 slide, 57 needle on 1 from top clip, 17.5 pilot jet, Cam lam powerjet 3/4 turn out,

4% rockoil synthesis, Franspeed Race exhaust

Timing at 17 degrees

Changed gearing from LI150 to std Indian gp200 loads of fun easy to ride.

Using my MRB cht gauge the engine runs at 150 - 160c at around 65 mph. 170 -190c at 75 to 80 mph, on a recent journey on the motorway held at around 75 - 80 for 6 miles went as high as 200 c but no problems, just leaking gearbox oil through a small crack in the casing,

Egt gauge eats probes so gave up on that.

No overheating problems any more yippeeee!

If you look on the net ~
There are k type thermocouples used on turbos ~ you won"t burn these out ~ Or I havn"t Yet