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Home > Help Needed / General Tech Chat > Piston Rings 1275 Turbo Rebuild

Sprocket

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Preston On The Brook




On 6th Nov, 2012 Brocky said:
Pistons have cleaned up remarkably well,

They rotate very freely on the pin but there is no rock from up and down or side to side, and there is zero sign of any det, well at least on no. 1, no.3 still has 0.5mm of carbon on it lol, but suspect will be good under neath,



Note the mark on the edge of the crown is a stain which will sand off easily

The max I ran on these was 10-12 psi with my cossy intercooler, but the motor had only been ran standard before that

I do have another set of original pistons that are in even better shape, but also have another 1275 block that has been sleeved previously, and there is no step in the bore at all, but needs new cam bearing, that can be the next build/spare motor.

Thanks for all the help by the way guys, :)


Austin Rover did actually know what they were doing with the Metro Turbo*wink*

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........


Brocky

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Katy TEXAS

Head is 28cc's, it's one Benross did for me,

I've been using the AFRacing cr sheet,

The block deck isn't in bad shape, and is original heigh, without a scim I think I'm looking at 8.15 static? with BK450, MG NA will be cam choice.

Based on this chart, I am looking to run upto 15psi, reliably:



Nice intercooler, super unleaded etc.


I just think 8.15 might be a little on/off in terms of power ? Although I guess 8.2 won't be much of a difference ? Having said that my last set up on a 1310 same head, came in at 8.38 static and drove ok.

Perhaps I should leave as is ? What grit paper should I clean the deck up with ?

Cheers

Brocky



On 6th Nov, 2012 Sprocket said:
What CC in the head do you have that has brought thr CR down below 8.2?

There is not much to come off the block before the pistons are flush with the top, the turbo pistons are already near the top.

Edited by Brocky on 6th Nov, 2012.

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

https://www.facebook.com/groups/17557298589...096464253807802


apbellamy

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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

Which turbo? 15 psi is conservative. We had a 28cc head on the same bottom end and worked it out to about 8.3:1. Lots of scope for more boost in there!

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


John

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Mongo

Barnsley, South Flatcapshire

It was more like 8.16:1 *wink*

If something is worth doing, it's worth doing half of.


apbellamy

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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

my memory is letting me down in my old age.

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


John

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Mongo

Barnsley, South Flatcapshire

Or too tired from baby.

If something is worth doing, it's worth doing half of.


apbellamy

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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

nah, he sleeps pretty well. going back to work is going to be a real shock to the system...

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


Brocky

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Katy TEXAS

T3 with Benross ported/knife edged manifold and ported elbow, 2" dp and Avonbar modified actuator,

How much boost can you get before you go 360 thrust?

Have also been looking at doing a GT1752, but quite like the T3 driving experience...


On 7th Nov, 2012 apbellamy said:
Which turbo? 15 psi is conservative. We had a 28cc head on the same bottom end and worked it out to about 8.3:1. Lots of scope for more boost in there!

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

https://www.facebook.com/groups/17557298589...096464253807802


John

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Mongo

Barnsley, South Flatcapshire

I don't think I would run a standard Metro T3 much above 15psi.

How about a GT2056?

Edited by John on 7th Nov, 2012.

If something is worth doing, it's worth doing half of.


Brocky

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Katy TEXAS

I'm undecided as to whether to send my spare T3 for a 360 rebuild or go more modern, the T3 is the easy option at the moment.

These guys look reasonable, but will be reseaching their background / history first *smiley*
.


What cars do the 2056's come off, and I take it you can run more boost as standard?

Edited by Brocky on 7th Nov, 2012.

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

https://www.facebook.com/groups/17557298589...096464253807802


Brocky

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Katy TEXAS

Too funny, just opened the November issue of mini mag, it takes a while to get here,

The tech master class is piston rings, :)

Apparently the machine shop I went to have an account with Total Seal and he is getting me some prices.

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

https://www.facebook.com/groups/17557298589...096464253807802


jarmour116

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Ballymoney, NI

hi mate, i got a set of Hastings rings from engine parts uk for std turbo pistons. they only cost £50 too. and the oil ring was the right size.


Brocky

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Katy TEXAS

Thanks for info, :)

I have order the total seals though,

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

https://www.facebook.com/groups/17557298589...096464253807802


tadge44

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Buckinghamshire

I used Hastings rings supplied by the engines owner in a rebuild I did recently -not turbo.

I had never heard of them before. Made in U.S.A apparently. They were available in an odd +30 oversize, which was needed, these were unavailable anywhere else. £35 a set too !!!

I,ll be interested to hear how welll they perform, in due course

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