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Old 05-21-2018, 09:32 AM   #21
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Re: Saito gas conversion - carb experience?


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Give it time my man, what you are doing is increasing wear by starving the engines lubrication ,it's not a on off switch it will take a while . Saito(gas engine manual ) states 15:1 for break in and 20:1 of klots kl 200 for regular running or premature wear will occur. look at any engine manual for that matter any bushed engine calls for 15-20:1. If it has bearings it's 30-50:1 . These engines are well built and will stand up for a while even if you abuse them but you should not be advising anyone to run 50:1 on a bushed engine as it's a known fact that they need more oil then that . cheers Roger .
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Old 05-21-2018, 10:19 AM   #22
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Re: Saito gas conversion - carb experience?

Actually if you go back a few years when most 2 cycle engines had bushed rods like the lawnboy lawn mowers or the early chain saws they were all running 16:1 . So it is completely normal to run 15-20:1 on a bush rod. It was not until the introduction of the needle bearing rod that they were able to run leaner mixes .
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Old 05-21-2018, 02:38 PM   #23
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Re: Saito gas conversion - carb experience?

this is not another thread on oil ok... so let who ever decide for themselves..
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Old 05-21-2018, 05:22 PM   #24
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Re: Saito gas conversion - carb experience?

You are 100% correct and my comments were just correcting some obvious misinformation before someone followed your advise and destroyed a perfectly good engine. . The fella was looking for carb information on engine conversions and you jumped in with misinformation about oil mixratio . I wish you had let people decide for themselves because nowhere would they find instructions to run 50:1 on bushings . cheers Roger .
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Old 05-21-2018, 06:45 PM   #25
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Re: Saito gas conversion - carb experience?

From my saito has engine manual:
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Old 05-21-2018, 06:48 PM   #26
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Re: Saito gas conversion - carb experience?

20:1 is recommended. 50:1 on a bushed rod WILL fail.
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Old 05-21-2018, 07:12 PM   #27
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Re: Saito gas conversion - carb experience?

have a bushed upper rod run at 85-1. all oils are not equal. synthetics seperate and do not burn. regular saw mix 20-1 id agree. the purple stuff never used it. but would give it a go now. this is on a two stroke not 4. the 4 uses less fuel so less oil.
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Old 05-21-2018, 07:18 PM   #28
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Re: Saito gas conversion - carb experience?

Quote:
Originally Posted by volksman View Post
have a bushed upper rod run at 85-1. all oils are not equal. synthetics seperate and do not burn. regular saw mix 20-1 id agree. the purple stuff never used it. but would give it a go now.
Upper and lower rod are worlds of difference. One goes a bit back and forth. One spins round at shaft rpm and experiences much more loads.

Everyone is free to do what they care to. But like Roger, I feel to suggest these extremely low oil content to others (which guess against every large experienced manufacturer and engine guru’s advice) is kinda’ wrong.
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Old 05-21-2018, 07:41 PM   #29
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Re: Saito gas conversion - carb experience?

modern synthetic and petroleum are two different things. gonna try this myself in a 4 stroke. engine gurus usually go with what they are taught. 16-1 engines run 100-1 but not with the same oil used at 16-1. to each their own. ill knock it when i trash an engine.
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Old 05-21-2018, 08:27 PM   #30
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Re: Saito gas conversion - carb experience?

Quote:
Originally Posted by volksman View Post
modern synthetic and petroleum are two different things. gonna try this myself in a 4 stroke. engine gurus usually go with what they are taught. 16-1 engines run 100-1 but not with the same oil used at 16-1. to each their own. ill knock it when i trash an engine.
Amen brother... for one thing this engine is not a saito.. and I bench tested it to destruction.. literaly ... set up in a stand and let it run for hour and half at full throttle.. plus the other 3 hours of test running it had and now an hour and half of total flight time.. still with me..

THIS IS NOT ANOTHER OIL THREAD ...

RAMJET..
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