5.5lsn 4hsn

For Keep-off 4.

http://tkocompetitiondev.com/product...roducts_id=576

Damn this is confusing. So the rear bearing size for a keep off 21-4 is.......14x28 or 14x25.8??

The standard 25814 is for all engines except the New Keep Off 21-4s.

The one with the reduced inner race is for the Keep Off 21-4.

Both are 14x25.8

your website says 14x28... hence he is confused

Thank you....fixed it.

no problem, now have amain update theres... :-)

thanks for clearing that up kgombe

thanks!

Nova toro/bonito fuel thirsty?

Not really.

of course Pulse

not too many in this world know more on novarossi engines than i do , i pride myself on knowing the info

hope that helped , its a perfect rich starting point

check your hsn for obstructions if you are having problems getting the engine to tune in after checking and/or replacing your fuel delivery system

awesome
 

That's really cool you made that bearing Peter. I don't even have one of those engines but I was thinking ok so about 100 dollars for a nova bearing that is hard to find that ridiculous. Great job TKO.

it definitely helps, my +4 BTT has 7,5 gallons now (I used my MP9 a lot since I began nitro this summer :p) and I feel I lost the tune a bit so rather restart from the beginning.. I just cleaned everything inside the engine again, the pipe (2096), installed a new filter, rebuilt the clutch.. just too see if I can do a few more miles with this engine

noob questions:
- what venturi size do you recommend for the BTT(running the 7 right now)?
- do you set the end points (idle,..) with the venturi installed or not?

thanks again!

Plan to buy 4btts but have so many model, any suggestion for:
-wide open track (high rev)
-fuel economy
-pipe n manifold combo
Thanks