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Home > Help Needed / General Tech Chat > Standard size turbo pistons

Lee85

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Member #: 11206
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West Bromwich B71

6th Sep, 2015 at 09:03:27am

OK so a member has a some pistons but they have the number 20831 stamped on them .

Now mine have 20142
( sorry for the bad pic )



Are there variations in pistons then? Does anyone know the difference ? Are the pistons I have actually turbo pistons?

Thanks

Edited by Lee85 on 6th Sep, 2015.


Sprocket

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11046 Posts
Member #: 965
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Preston On The Brook

7th Sep, 2015 at 08:43:33pm

The pistons you have are the early type with the extended skirt. I'm not sure on the numbers, and there doesnt seem to be that many of them about. The later pistons will not be compatable with these if you are thinking of mixing and matching, that will just ruin the balance of the whole engine.

I've seen these extended skirt three ring pistons before in an early MG Metro engine. Not sure if those pistons were the same as these. The main difference if any would be in the dish volume and crown height.

On 26th Oct, 2004 TurboDave16v said:
 Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........

Lee85

12 Posts
Member #: 11206
Member

West Bromwich B71

7th Sep, 2015 at 08:57:35pm




On 7th Sep, 2015 Sprocket said:
The pistons you have are the early type with the extended skirt. I'm not sure on the numbers, and there doesnt seem to be that many of them about. The later pistons will not be compatable with these if you are thinking of mixing and matching, that will just ruin the balance of the whole engine.

I've seen these extended skirt three ring pistons before in an early MG Metro engine. Not sure if those pistons were the same as these. The main difference if any would be in the dish volume and crown height.


Thanks for clearing that up for me .

I may have a set of 20831's in the pipeline if they are in good condition .

If not then my only option is to go down the cast omega route and get the block bored to suit .


Carlzilla

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Quarry Bonk

17th Sep, 2015 at 01:55:43pm

Any luck since I saw you at minispares the other day mate?

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)
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