coveredinsap said:
Boy this thread sure slid into obscurity fast....
No......I'm going to guess that modding chainsaw engines is no different than modding car engines....when one starts boring out cylinders and increasing rpms and the like, it increases horsepower but weakens the engine overall.....effectively exceeding the intended design operating specifications.
That is one reason why drag engines and other racecar engines generally only last one race (day) before needing an entire engine overhaul.
How do you come to that conclusion, Ben did make the statement that "a race saw is a diff ball game. "
Modding car engines to race dose not tremendously shorten TBO (time before overhaul) time, in fact in most cases, using a stock engine to do the same work as a modified car engine , the modded engine will out last the stock, simply because of the workmanship and better quality parts then stock,(just take a 5 angle valve seat compared to 3 on a stock engine for one),,,,,,,,
Top fuel cars need to be basically tore down every pass,,,,,, I'm sure there are saws on nitro that need the same treatment?
To take a lesson from Aviation engines, a simplified overview would be to take 2 cubic inches per every HP to make a 1000 hour TBO time, detuning engines so to speak for the sake of reliability and longevity,(
the EPA and OSHA never had there say in avation engines, needing performance mods.)
Piston aircraft engines built for fighters had a hard time making a 300 hour TBO
It's quite logical to believe that a good job at "woods - porting" a saw engine will add life over the hot running stock and add to the usability as it has more HP per pound
