Toro/Tecumseh 2 stroke engines
- Thread starter ugmold
- Start date
- Tags engines stroke toro/tecumseh
Oops, not my pic, just an internet grab to show the design you have. Oval in center is where your stock intake port is, controlled by piston skirt lower edge. Upper holes and lower opening are transfer ports. Lad has smoothed them a bit.
Driveway Port Toro S200? (Tecumseh) -pics | Arboristsite.com
And, a lesser sized version of this is what I mean by the booster port cut in piston. If you replace intake and cover with a flat plate, it all becomes a transfer port area.
West Bend uses a similar cover for intake/transfer, but has a reed so the intake need not be sealed. Thread has several versions of added boost ports, as well as "trenched" extra boost paths. Old sled racers did much the same, called them "finger ports".
820 ports - WEST BEND ENGINE ARCHIVE - Member Projects - Vintage Karts Forums
Driveway Port Toro S200? (Tecumseh) -pics | Arboristsite.com
And, a lesser sized version of this is what I mean by the booster port cut in piston. If you replace intake and cover with a flat plate, it all becomes a transfer port area.
West Bend uses a similar cover for intake/transfer, but has a reed so the intake need not be sealed. Thread has several versions of added boost ports, as well as "trenched" extra boost paths. Old sled racers did much the same, called them "finger ports".
820 ports - WEST BEND ENGINE ARCHIVE - Member Projects - Vintage Karts Forums
Hey that's cool that there is other forums talking about these engines. Now I really want to get one of these modded and mounted on a minibike!
I'd be really sweet if we could find a stronger connecting rod for this family of engines. I'm really contemplating buying that bottom mount reed plate and finding a way to block off that transfer port intake adapter.
I'd be really sweet if we could find a stronger connecting rod for this family of engines. I'm really contemplating buying that bottom mount reed plate and finding a way to block off that transfer port intake adapter.
Another member on here did end up using one of those R-tek engines. Essentially a piston port version of the LB Duraforce engine. Performance was quite lacking compared to the case reed version. One day I'm going to muster up the cash to buy a brand new US820 CCW rotating 3/4" shaft engine. Only if these were cloned by the China man!! Oh man...
Haa. I saw the R-Tek disappointment. I'm sure that a reed cage can be incorporated. GEM did conversions on all sorts of old engines.
I have a pair of M's and will measure port timing compared to the DF and an R-Tek when one bounces in the scrap pile. 8 of 10 are 3-5 Tecs though and often stuck or worn out, gouged out.
I have a pair of fairly nice WB820s that I'm torn on building, build-sell, or sell in bits as a lot or parted.
I have a pair of M's and will measure port timing compared to the DF and an R-Tek when one bounces in the scrap pile. 8 of 10 are 3-5 Tecs though and often stuck or worn out, gouged out.
I have a pair of fairly nice WB820s that I'm torn on building, build-sell, or sell in bits as a lot or parted.
That'd be cool to add a reed cage to an R-tek engine. Yeah I look at "Gem" parts on ebay and vintage karting sites, seriously cool stuff they had back then.
Was the M series of LB engines the one that were made by a Japanese company?
Oh nice and lucky you! What direction does the PTO rotate and what type of shaft do they have?
Was the M series of LB engines the one that were made by a Japanese company?
Oh nice and lucky you! What direction does the PTO rotate and what type of shaft do they have?