Arrow on top of piston????
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Arrow on top of piston????
Hi There,
Which way does the arrow point to, as I rebuilding my engine???
Thanks
Which way does the arrow point to, as I rebuilding my engine???
Thanks
- the-elf
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It should point to the front of the bike.
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Re: Arrow
Looking at a standard piston there are four drilled holes in the piston body, these are to allow for lubrication, (so i have read) these holes are on the forward side of the piston, in other words they are on the side that faces the exhaust port.usafric wrote:OK I have seen the arrows before, but I dont have one on my new Mitaka piston, Help!!!
- JanBros
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Re: Arrow
the most important thing with fitting 2-stroke piston's, is the pin that holds the ringsusafric wrote:OK I have seen the arrows before, but I dont have one on my new Mitaka piston, Help!!!
when the piston goes up and down, there must always be metal. if the pin passes a port, the rings will pop out into the port and ruine a perfectly good cylinder
normaly, piston's are installed with the pin facing the "rearer" side of the cylinder.
so check where the pin would be when you fit the piston in both positions, and install it the way that most metal is arround the pin area
Last edited by JanBros on Tue Jun 19, 2007 11:59 pm, edited 1 time in total.
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Re: Arrow on top of piston????
jonny1deck wrote:Which way does the arrow point to, as I rebuilding my engine???
the-elf wrote:It should point to the front of the bike.
S'not always the same thing ! My KR tandem-twin had a top-end rebuild by the Kawasaki-trained mechanic who owned it before me, and he put 'em both in pointing forwards....JanBros wrote:the arrow on 2-stroke-piston's always points to the exhaust
And don't get me started on my TZR Reverse-Cylinder...
Kawasaki KR250 Tandem Twin (x4) & KS-II 80,
Yamaha RD350LC,
Suzuki GSX-R750RK & RB50 Gag.
Yamaha RD350LC,
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- JanBros
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Re: Arrow on top of piston????
I'd be very surprised if that's the right wayStrokerBoy wrote:S'not always the same thing ! My KR tandem-twin had a top-end rebuild by the Kawasaki-trained mechanic who owned it before me, and he put 'em both in pointing forwards....
maybe you should check this with your connections in Japan
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- JanBros
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Re: Arrow on top of piston????
I just had a look on your own website, found the parts list, and guess what : check the arrows......JanBros wrote:I'd be very surprised if that's the right wayStrokerBoy wrote:S'not always the same thing ! My KR tandem-twin had a top-end rebuild by the Kawasaki-trained mechanic who owned it before me, and he put 'em both in pointing forwards....
maybe you should check this with your connections in Japan
so, in the future, ALWAYS put the arrows towards the exhausts
and before I forget : give your Kawasaki-trained mechanic some descent spanking
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