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 Piston & Conrod pics

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waterbottle
GRiSO
GRiSO


Posts : 1036
Join date : 2015-02-02
Age : 55

PostSubject: Piston & Conrod pics   Thu Dec 24, 2015 8:27 pm

Just a couple of pics, I paid all this money for a GRiSO and only got half a piston Razz [You must be registered and logged in to see this image.][You must be registered and logged in to see this image.]" />

Some fancy inserts on these
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Conrods have Spray ports to direct oil to underside of pistons. There is also a spray bar for each side too.
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beetle
GRiSO
GRiSO


Posts : 3959
Join date : 2013-09-30

PostSubject: Re: Piston & Conrod pics   Thu Dec 24, 2015 8:44 pm

Ooh! Porn!

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Pete Roper
GRiSO
GRiSO


Posts : 3769
Join date : 2013-05-29
Age : 59

PostSubject: Re: Piston & Conrod pics   Thu Dec 24, 2015 8:46 pm

The odd thing is Ron you'll find that the shells don't have feed holes for the rod jets.

Pete
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waterbottle
GRiSO
GRiSO


Posts : 1036
Join date : 2015-02-02
Age : 55

PostSubject: Re: Piston & Conrod pics   Thu Dec 24, 2015 8:57 pm

Oh, disappointed now. Another leftover from the research and development dept ?  Mayhap they had trouble with the oil pressure and went to the spray bars then ? Anyhoo it works Thumbs Up
Cylinder walls show zero appreciable wear after 36Thousand kms , just a slight build up of a soft brown carbon
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rboe
Tiradritto
Tiradritto


Posts : 306
Join date : 2014-04-21

PostSubject: Re: Piston & Conrod pics   Thu Dec 24, 2015 9:13 pm

Why does the piston have those arch segment cutouts on top along the edge?
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Pete Roper
GRiSO
GRiSO


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PostSubject: Re: Piston & Conrod pics   Thu Dec 24, 2015 9:45 pm

I'd imagine they removed the material to avoids a potential hot spot.

Pete
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Grisonut
GRiSO
GRiSO


Posts : 1015
Join date : 2014-01-02

PostSubject: Re: Piston & Conrod pics   Thu Dec 24, 2015 11:03 pm

I think I agree with Pete...
The 8V is a sweet heart of a mill.
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Mad Welshman
Don Abbondio
Don Abbondio


Posts : 12
Join date : 2015-08-10

PostSubject: Re: Piston & Conrod pics   Mon Jan 04, 2016 2:26 pm

I like em slim ;-)
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Oz1200Guzzi
Don Abbondio
Don Abbondio


Posts : 1773
Join date : 2014-03-13
Age : 62

PostSubject: Re: Piston & Conrod pics   Mon Jan 04, 2016 2:40 pm

Reminds me of the pistons in the BSA works Moto-X bikes I had - a minimalist approach (though these were hi domed units with valve cutaways). That particular bike had a maximum RPM of around 7,000 and all of 40 HP, valve overlap was so great you could look through the engine from the exhaust port and out through the inlet port. Ran like shit if you didn't have the right exhaust (no muffler - just a Reverse Cone Megaphone on a short pipe). Brings back memories...
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PostSubject: Re: Piston & Conrod pics   Today at 10:06 pm

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Piston & Conrod pics
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