Ebay Engine

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WrickM
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Ebay Engine

Post by WrickM »

Has anyone seen this engine http://www.ebay.com/itm/351419988952?_t ... EBIDX%3AIT at 870cc and 25hp seems like a really nice power to weight ratio V twin. I am looking at an older Harley ironhead sportster and think this might be a great engine for that project.
alexanderfoti
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Re: Ebay Engine

Post by alexanderfoti »

I would be wary of its power rating.

I think It would be closer to 20hp maybe 21.
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Diesel Dave
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Re: Ebay Engine

Post by Diesel Dave »

Before you go any further - do a forum search and read up on Punsun.......

From memory:

2 snapped cranks
2 split casings
1 Flywheel departed.
alexanderfoti
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Re: Ebay Engine

Post by alexanderfoti »

They definitely don't have a good reputation.
WrickM
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Re: Ebay Engine

Post by WrickM »

That's a shame. Don't worry guys I am not jumpng in before i get opinions of more experienced gentlemen like yourselves.
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Stuart
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Ebay Engine

Post by Stuart »

The Kubota Z482 seems to be on the rise. It's been around forever which says much for its reliability. Commonly found on refrigerator trucks (beware variant characteristics) and in Aixam cars: http://en.m.wikipedia.org/wiki/Aixam
Stuart. M1030M1, Honda NC700S, Grom!, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.
alexanderfoti
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Re: Ebay Engine

Post by alexanderfoti »

Stuart wrote:The Kubota Z482 seems to be on the rise. It's been around forever which says much for its reliability. Commonly found on refrigerator trucks (beware variant characteristics) and in Axim cars: http://en.m.wikipedia.org/wiki/Aixam
Indeed, it does seem that there have been many builds with them over the past 2 years or so.
UAofE
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Re: Ebay Engine

Post by UAofE »

Diesel Dave wrote:2 snapped cranks
2 split casings
1 Flywheel departed.
Obsolete designs. Any of the Winsun/Pansun V-twins have those issues resolved.
2006 Honda Rebel
Kubota OC95, Comet 44C/44D
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Diesel Dave
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Re: Ebay Engine

Post by Diesel Dave »

Obsolete design?

Top half of each cylinder is the same as every Yanmar clone motor out there and they have to make up around 50% of the bikes on the road.

I think there were a couple of flaws in both the design and the materials; and some mounting errors that exacerbated the problems. Not resilient mounting the feet and using head steadies certainly put paid to quite a few casings.

There are some successful V twins - Yanmar made a nice water cooled lump and I believe Kipor also.
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Re: Ebay Engine

Post by alexanderfoti »

I think he was referring to the original batch that failed.
UAofE
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Re: Ebay Engine

Post by UAofE »

Diesel Dave wrote:Top half of each cylinder is the same as every Yanmar clone motor out there and they have to make up around 50% of the bikes on the road.
Yet every defect you listed was related to the bottom end.
2006 Honda Rebel
Kubota OC95, Comet 44C/44D
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