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Frog Johnson
PostPosted: Wed Aug 14, 2019 11:27 pm 
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Hi all, just something I’ve noticed looking for pistons for a new build is that a lot of suppliers (particularly in th uk) offer just about all the normal sizes, then jump from 1330 to 1380?? Skipping the 1360 size- (which is what I was thinking of going to)
Just wondering why this is?
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drmini in aust
PostPosted: Thu Aug 15, 2019 5:02 am 
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Location: near Baulkham Hills, NSW
Most 1360 pistons (73.0mm) here are made in Taiwan. Both Hypatecs and Russell Engineering (not same product).
UK sourced pistons are other brands.

Also, Russell Engineering have a 72.5mm, which is uncommon elsewhere. Gives around 1352? cc. Saves going all the way up to 1360 from a 1330.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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sitnlo62
PostPosted: Thu Aug 15, 2019 11:55 am 
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998cc
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Location: Brisbane
https://minisport.com.au/1275094-hypate ... set-1360cc

https://www.precisionintl.com/CategoryS ... ngine=1279

Here are two links to 1360cc pistons 0.094" os 73mm in Australia. Precision International is the Australian Distributor and sell to the Public.
You will not buy cheaper Over Seas

Dave

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simon k
PostPosted: Fri Aug 16, 2019 9:25 am 
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Location: Wodonga - Vic/NSW border
drmini in aust wrote:
Most 1360 pistons (73.0mm) here are made in Taiwan. Both Hypatecs and Russell Engineering (not same product).
UK sourced pistons are other brands.

Also, Russell Engineering have a 72.5mm, which is uncommon elsewhere. Gives around 1352? cc. Saves going all the way up to 1360 from a 1330.


GR sold me .072" = 1340cc

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TK
PostPosted: Fri Aug 16, 2019 2:21 pm 
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Is it easy to source rings for that size?

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drmini in aust
PostPosted: Fri Aug 16, 2019 4:26 pm 
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Graham has 72.5 Nippon? rings. Unlike Hypatecs, they are metric width not imperial.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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TK
PostPosted: Fri Aug 16, 2019 5:22 pm 
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Sorry Kev, my mini is old not metric. They probably would be good for a Rover mini.

edit (joke)

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Last edited by TK on Fri Aug 16, 2019 9:52 pm, edited 1 time in total.

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slide
PostPosted: Fri Aug 16, 2019 5:28 pm 
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998cc
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Location: Adelaide
Putting Triumph pistons in was once a popular upgrade which resulted in 1387 IIRC.

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1965 Mini Van (1360)
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1978 Rover SD1 V8 (4.6)
1996 Land Rover Discovery V8 (4.0)
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TK
PostPosted: Fri Aug 16, 2019 9:47 pm 
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triumph 2500 6cylinder pistons =1426

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