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New Pistons for sale
#1
I have a new set of Seven workshop Pistons at plus .060" new unused £160 or will happily swop for a set at plus .080"
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#2
If you purchased these yourself from Jamie, I am almost certain he would exchange them for the +.080" set you now require, for the cost of the postage Zeto.
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#3
(26-01-2018, 12:09 PM)Ruairidh Dunford Wrote: If you purchased these yourself from Jamie, I am almost certain he would exchange them for the +.080" set you now require, for the cost of the postage Zeto.

Hi Rory, thanks.I don't have a receipt for them
Did you take down the solicitors post touting for business that went up this morning,if so well done.
Best Wishes,Gene
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#4
Yes - it was reported by a user, which made for a quick delete, thank you.
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#5
Hello ,with regards to your pistons for sale I have an Austin 8 AP Tourer  1939 with hepolite pistons 7665 +060 size = 2.295/58.269mm .Do you know if the are interchangeable as I beleive that the big 7 engine was used in the prewar 8 thank you regards Ally
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#6
My 1950's Hepolite catalogue confirms that the Austin Big Seven 900cc 1937 to 1939 and the New Eight 1939 onwards used the same engine and therefore the same Hepolite RS7665 pistons. However Big Seven pistons differ from those in the earlier model Austin Sevens 747cc 1923 to 1939 which are Hepolite RS11063.

The differences are as follows:
Austin Big Seven & New Eight: Bore: 2.235", Compression Height: 1.25", Length: 2.5"
Austin Seven: Bore: 2.20", Compression Height: 7/8", Length: 1.13/16"

Zeto will need to confirm if his are the earlier 747cc pistons (which I think they probably are) or Big Seven pistons.
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#7
(01-03-2018, 02:22 PM)Ally Monce Wrote: Hello ,with regards to your pistons for sale I have an Austin 8 AP Tourer  1939 with hepolite pistons 7665 +060 size = 2.295/58.269mm .Do you know if the are interchangeable as I beleive that the big 7 engine was used in the prewar 8 thank you regards Ally

Hi Ally, the pistons I have are for the 747cc Austin Seven, so not what you want.
Rgds

(01-03-2018, 04:29 PM)Jeff Taylor Wrote: My 1950's Hepolite catalogue confirms that the Austin Big Seven 900cc 1937 to 1939 and the New Eight 1939 onwards used the same engine and therefore the same Hepolite RS7665 pistons. However Big Seven pistons differ from those in the earlier model Austin Sevens 747cc 1923 to 1939 which are Hepolite RS11063.

The differences are as follows:
Austin Big Seven & New Eight: Bore: 2.235", Compression Height: 1.25", Length: 2.5"
Austin Seven: Bore: 2.20", Compression Height: 7/8", Length: 1.13/16"

Zeto will need to confirm if his are the earlier 747cc pistons (which I think they probably are) or Big Seven pistons.

Thanks Jeff
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#8
(01-03-2018, 05:40 PM)Zetomagneto Wrote: [quote pid='7605' dateline='1519910549']

(01-03-2018, 04:29 PM)Jeff Taylor Wrote: My 1950's Hepolite catalogue confirms that the Austin Big Seven 900cc 1937 to 1939 and the New Eight 1939 onwards used the same engine and therefore the same Hepolite RS7665 pistons.


[/quote]

I thought that the Austin Big Seven and Austin Eight engines were different (not sure about pistons though) ?

Cheers, Tony.
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#9
Certainly the pistons carry the same Hepolite RS7665 number and size specifications, Tony. Perhaps the 1939 New Eight had the same 'Big 7' engine with the post war Eights having a slightly different engine? The catalogue isn't clear on that point, merely saying the RS7665 pistons were fitted to the 1937 to 1948 'Big Seven' 8hp 900cc and the 'New Eight' CR 6.8 to 1.

I suggest Ally contact Robin Taylor of Austin Big 7 Spares, see what he suggests - email: robin.e.taylor@talktalk.net
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#10
(01-03-2018, 04:29 PM)Jeff Taylor Wrote: My 1950's Hepolite catalogue confirms that the Austin Big Seven 900cc 1937 to 1939 and the New Eight 1939 onwards used the same engine and therefore the same Hepolite RS7665 pistons. However Big Seven pistons differ from those in the earlier model Austin Sevens 747cc 1923 to 1939 which are Hepolite RS11063.

The differences are as follows:
Austin Big Seven & New Eight: Bore: 2.235", Compression Height: 1.25", Length: 2.5"
Austin Seven: Bore: 2.20", Compression Height: 7/8", Length: 1.13/16"

Zeto will need to confirm if his are the earlier 747cc pistons (which I think they probably are) or Big Seven pistons.

Hi Jeff ,thank you for your very informative reply,very much appreciated also thanks to Zeto for letting me know ,cheers Ally
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