Author Topic: F/S new 77mm CROSS FLOW PISTON KITS with rings , piston ,cylinders, pins X-FLOW  (Read 702 times)

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Offline 1970S2

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I have 2 NEW OLD STOCK brand new sets of piston kits complete for 77mm engines  X-FLOW , these are AE brand have a very slight raised dome,  $600 a set  plus shipping, ...located in Picton Ontario
« Last Edit: Wednesday,June 08, 2022, 11:31:28 AM by 1970S2 »

Offline s2europa

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Re: new 77mm PISTON KITS with rings , piston ,cylinders, pins
« Reply #1 on: Tuesday,June 07, 2022, 07:47:39 AM »
Are these the Lotus pistons with the raised crowns on the pistons? Thanks.

Offline Bud

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Re: new 77mm PISTON KITS with rings , piston ,cylinders, pins
« Reply #2 on: Tuesday,June 07, 2022, 11:13:57 AM »
Are any of these for the big valve engine

Offline jbcollier

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Re: new 77mm PISTON KITS with rings , piston ,cylinders, pins
« Reply #3 on: Tuesday,June 07, 2022, 01:34:42 PM »
Stock Lotus Twin Cam bore is 82.5mm (3.25").  These pistons are for a Renault engine.  77mm pistons are for the 1565 engines (1470 use 76mm pistons).  Whether they are the correct HC pistons we don't know yet.

Offline 1970S2

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Re: new 77mm PISTON KITS with rings , piston ,cylinders, pins
« Reply #4 on: Tuesday,June 07, 2022, 03:58:37 PM »
pistons are for the X-Flow head , Lotus used Renault engines up till late 1970, I will post pictures this week , I also have a piston kit for Fuego engine, 79mm
« Last Edit: Tuesday,June 07, 2022, 09:18:35 PM by 1970S2 »

Offline GavinT

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Re: F/S new 77mm CROSS FLOW PISTON KITS with rings , piston ,cylinders, pins X-FLOW
« Reply #5 on: Wednesday,June 08, 2022, 09:42:34 PM »
Interesting pic in the OP.
I don't think I've ever seen a cross-flow piston that didn't also have a similar tapered section opposite the squish allowance one. I wonder what compression ratio they might produce.

What diameter are the gudgeon pins and are they press fit or the fully floating variety?

Offline 1970S2

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Re: F/S new 77mm CROSS FLOW PISTON KITS with rings , piston ,cylinders, pins X-FLOW
« Reply #6 on: Thursday,June 09, 2022, 12:11:14 PM »
21 mm , not free floating , sorry I have no part number for the kit