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Triumph TR6 - Need to source four 74.7mm pistons

Hi, I've jumped over from the MG BBS. I need to source four in-expensive 74.7mm Triumph (2.5 ltr 6 cylinder) pistons. I need them for a BMC A-Series project, hence I only need four.

I was on the Moss site and they sell in sets of 6. Thanks for help.

James
J E G Eastwood 1

James-TRF sells individual pistons for $94 each.
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James-check out ebay item#350180753926, which is a set of std. TR6 pistons (refinished, whatever that is) for a buy it now price of $50.It doesn't include rings.
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Gents thanks, I looked up the eBay no. but it was for a book on Wikipedia.

Moss sell a set of 6 here in the UK for ~£160, so I'm hoping to find them for about £30 each, bough singularly, to amke up a set of four.

Thanks, James
J E G Eastwood 1

James....
I don't know if this will work, but might be worth checking out....
From the Cape Cod British Car Club.
http://www.buckeyetriumphs.org/technical/TR6ShopReference/TR6ShopReferenceData.doc

Concerning Mazda pistons....
2700cc Conversion Using Mazda E5 Pistons - Supposed to be a very easy modification. Use 0.5mm (0.020") oversize E5 Mazda pistons & rings. There are several types available & the one selected has approximately a 7cc dish in the crown. The pistons require a circlip groove to be machined into each side of the gudgeon pin hole to retain the gudgeon pin. A non removable (without replacing them) type of circlip was used. The con-rods need to be resized & new little end bushes made to suit the E5 pistons. The con-rods remain the original length. On assembly the pistons cleared the block deck by about 0.1mm (0.004") @ top dead center. http://home.iprimus.com.au/tridim/triumph/Engine.htm Another opinion - A TR6 block will take 2.71 litres easily using Mazda pistons. There are a few specialist Triumph shops out here that carry out the work & stock 2.7l head gaskets. The Mazda pistons are sourced from the Mazda E2000 series light truck (I think) but require a little work. You can use Teflon plugs for the gudgeons instead of circlips. The block needs to be decked about .020” to maintain correct compression & piston height. As a precautionary measure, you might want the machine shop to offset bore the cylinders a little to increase wall thickness.

Good luck.......
Rod
Rod Nichols

James-Sorry to give the wrong item #, should be 350181735926.
I have spent a bit of time on ebay recently looking for a single .020+ piston to replace one that was damaged by some unidentified debris after a minor rebuild. I was able to score the piston, but the cause of the damage is still a mystery.
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This thread was discussed between 23/03/2009 and 25/03/2009

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