40cc Shoot Out

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Less words and more pics from yous.:rock:

did someone say echo

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OOpps - Gilardoni then (hopefully)?

it doesn't matter what name is on the outside of the cylinder when he starts ,they get a new name on the top of the saw once randy's done with them :msp_thumbsup:
 
Nothing to rage above. The saw is alright tuned quite great. Dolmar does a great job at making em run close to perfect as it is.

Modding would help, but I don't think its worth the money and more importantly time.

"Out of the box" my 401 was pretty anemic and sluggish. I tuned it full rich to the limiters and it was barely OK. IIRC, spec was 12K or 12.5K max rpm. After MM and retune, my 401 was strongest in the wood when turning 13.5-13.8K rpm with no load. I did nothing else to the saw, so porting remains the same, and the base gasket is intact.

My 540 reacted much the same way with a MM and retune. I didn't put a tach on it, but it definitely is much stronger now that it can breathe. It seems pretty obvious that these earlier saws were strangled to meet emission standards.


The 401 etc isn't really comparable to the 420/421 or the MS241, as it is a much lighter saw with a lot less power - more what a 40cc saw really should be (imo)!

Sadly, it also is a much older design, and suffer from it in some ways...

I have a 401 kita with a little port work and muffler mod and it was very surprising. Nice saw with good power. My dad loves it.

Thanks for all the insights, great thread.:clap:
Waiting for the outcome, :popcorn:
 
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