Advice for a Thundercat engine ?

[Willow Racing]

Hi everybody!! Just got an F2 with Thundercat engine after playing with 2 strokes for a long time in solo and sidecars. I'm looking for advice on all things Thundercat and 4 stroke. What do you think is the best oil to run and should I stick to the book on the quantity to put in. Any help will be greatly appreciated. Dave

[little chud]

about bloody time too

talk to big tim, his dad howard knows a thing or two about thundercats.

you coming to darley 3rd/4th oct?

jc

[Big Tim]

Howard used to run "Mobil 1" motorcycle race oil in his Thundercat (and prior to that, FZR) motors without any problems. If you're running the standard sump, then 3 litres is the quantity that you want to use.

If you have any specific questions etc, then you're welcome to email me - timlangham@hotmail.co.uk and I'll pass them onto Howard.

[kaza1]

we have a standard 600 thundercat yet with a modified shortened sump. At present and knowing no difference we run it as ova full - is this right or wrong?

[tufty113]

we ran 3.5 litres with filter change...we also used a mistral sump baffel with a std sump...we also always ran semi 10/40 and never had an issue in 4 years .....

[oldbelly]

1/4 of a litre above the top of the window and 15/50 oil. Anyone using 10/40 is taking a chance. We used 15/50 years ago with the 600 yams and were back on it now with the 1000 Suzukis. 95% of the F1 outfits with a wet sump are using 15/50 oil. All the oil companies make a good oil nowadays but we have always used Motul.

[Willow Racing]

Thanks for the advice. The sump is standard but with baffles fitted to the bottom of the engine. Do any of you know if it matters if a fuel pump is fitted vertically rather than horizontal. At the moment this one is horizontal, just lies on the under tray and the only place I can find for it would mean fixing it vertically. But at least it would be fixed rather than floating about!!
Dave