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What Piston?

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

What Piston?

Postby P D: SC Chester » Sat Mar 04, 2017 8:32 pm

What is a decent piston to suit a AF stage 4 175 kit ( iron with liner) .

And where to purchase from?

Cheers
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Re: What Piston?

Postby HxPaul » Sat Mar 04, 2017 9:26 pm

P D: SC Chester wrote:What is a decent piston to suit a AF stage 4 175 kit ( iron with liner) .

And where to purchase from?

Cheers

AF Rayspeed.
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Re: What Piston?

Postby P D: SC Chester » Sat Mar 04, 2017 9:40 pm

Yes , bought it second hand, cylinder looks good condition
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Re: What Piston?

Postby missing lynx » Sat Mar 04, 2017 9:43 pm

is the cylinder of those steel lined with an alloy jacket?
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Re: What Piston?

Postby rossclark » Sat Mar 04, 2017 9:58 pm

HxPaul wrote:
P D: SC Chester wrote:What is a decent piston to suit a AF stage 4 175 kit ( iron with liner) .

And where to purchase from?

Cheers

AF Rayspeed.


I think HxPaul was suggesting that AF was the best place to get one to match their kit.
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Re: What Piston?

Postby P D: SC Chester » Sat Mar 04, 2017 10:15 pm

Ah righto.

Seen 2 pistons - a 3 ring casa and a 2 ring mahle - any differencesuggestions?

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Re: What Piston?

Postby missing lynx » Sat Mar 04, 2017 10:17 pm

are they conversion pistons or std 175 pistons?
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Re: What Piston?

Postby P D: SC Chester » Sat Mar 04, 2017 10:19 pm

The Mahle is conversion
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Re: What Piston?

Postby missing lynx » Sat Mar 04, 2017 10:21 pm

you will need a conversion piston as a std 175 has a different length con rod
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Re: What Piston?

Postby P D: SC Chester » Sat Mar 04, 2017 10:22 pm

I will order the Mahle.

Ta ML
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Re: What Piston?

Postby missing lynx » Sat Mar 04, 2017 10:25 pm

if it was a second hand cylinder what makes you think it's an Af one?
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Re: What Piston?

Postby P D: SC Chester » Sat Mar 04, 2017 10:34 pm

I bought it as advertised, like I said it looks well made, but you never know eh.
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Re: What Piston?

Postby missing lynx » Sat Mar 04, 2017 10:39 pm

just a thought look at the 175 piston then look at your 150 piston is the hole for the gudgon pin the same distance from the crown also is the cylinder iron liner with an alloy jacket?
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Re: What Piston?

Postby P D: SC Chester » Sat Mar 04, 2017 10:43 pm

I will have a look asap.
It is an iron with alloy jacket.
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Re: What Piston?

Postby missing lynx » Sat Mar 04, 2017 10:50 pm

sounds like a scoot rs one they take a fair bit of fetling to get working correctly I've taken hours setting the port timing on them you may be better getting the new piston then going to Hammonds on Dock road in Connahs Quay and get you 150 opened out to suit
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Re: What Piston?

Postby P D: SC Chester » Sat Mar 04, 2017 11:55 pm

Thanks mate, that sounds like a plan!
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