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Home > Help Needed / General Tech Chat > Morespeed pistons and block work

mattyking

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Thatcham, berkshire

2nd Jan, 2007 at 04:12:01pm

hi, im in need of a rebore. do we get morespeed discount as i think i read it soemwhere? does anyone know any other places that can do it for cheaper locally to me. Berkshire.

Also i will be needing some new pistons and what to get more dished ones.

has anyone used the omega cast pistons and do they do them in a bigger dish. will they be suitable. im not after silly amounts of boost atm. just more than standard. about 12 to 14psi pushing it. they look fairly reasonable in price compared to the forged pistons as i cannot afford that amount of money at present. cheers


Nick
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Midlands

2nd Jan, 2007 at 04:14:05pm

get a set of 21253's, cheaper than the omegas and mine have been fine for the past 2 years. Mine have got 11cc in them supposedly, i know a mates got 14.7cc machined into his though.

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mattyking

173 Posts
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Thatcham, berkshire

2nd Jan, 2007 at 04:20:39pm

cheers bud. arn't they standard dish though on a turbo so i will not be able to run more boost. will be getting head work done chambers bigger too. what boost are you running through with your pistons

mattyking

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Thatcham, berkshire

2nd Jan, 2007 at 04:22:37pm

cheers bud. arn't they standard dish though on a turbo so i will not be able to run more boost. will be getting head work done chambers bigger too. what boost are you running through with your pistons


just checked site again they sell the 21253 which are 180£. but they also sell turbo mega pistons which have same dish but are 65£ more. does anyone no whats different about them

Edited by mattyking on 2nd Jan, 2007.


T3Tone

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Sunny suffolk

2nd Jan, 2007 at 04:26:40pm

I run cast 11cc dished omegas and run 15psi with 8.3-1 compression ratio and not had an issue with them.

-MINI CLUBMAN 1380 TURBO-

mattyking

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Thatcham, berkshire

2nd Jan, 2007 at 04:31:33pm

so what are standard size turbo pistons then. basically i need to rebore my engine out which i am planning on goin 40. and i will be asking benross to do my head work for me and im after a set of pistons which will take hopefully a bar of boost. what would you guys use as i cant afford spangly new forged ones. which would be the answer if money wasnt an issue.

many thanks.


Turbo Tel

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Delaware, USA

2nd Jan, 2007 at 11:08:46pm




On 2nd of Jan, 2007 at 04:22pm mattyking said:

just checked site again they sell the 21253 which are 180£. but they also sell turbo mega pistons which have same dish but are 65£ more. does anyone no whats different about them


I beleive the 13 cc 21253's are the pistons as used in most High compression 1275 mini engines but morspeed has opened up the dish to allow them to be used on turbo applications. The Mega 13ccs are made from Minispares mega 6cc pistons again machined out to get a lower compression ratio

Its generally accepted that the megas (and omegas) are a bit stronger but many are using the 21253's with no problems, I'm not sure what boost levels they use

I estimated 8.5 CR with a standard 21.5 cc head on the Megas but the 21253's have higher crown height so the CR will be higher, about 9.0 CR But check that with Morspeed...

In fact I have just ordered some 13cc Megas from Morspeed, I'll post pictures when they arrive in a week or two.

Terry

website:- http://www.terryhunt.co.uk


turbodave16v
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SouthPark, Colorado

3rd Jan, 2007 at 03:40:57am

The mega's are bloody strong pistons, that are available seperately, always available, and have decent ring sets, which are always available, and I'll need a lot of convincing to run anything else given the low cost....

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daniel_johno

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Aberdeen

4th Jan, 2007 at 12:50:33am

i am getting 21253 pistons dished by morspeed as well as some other work done but have been waiting 10 months for the parts so if you are in a rush for the parts you may want to shop elsewhere.

If the parts are on the shelf you may get them faster but if he needs to machine them you may be in with a long wait. Ive been told he's busy with old school ford motors just now but when im told every time i contact him my parts are finished ready to post out and i wait..... and wait......and wait....

I wanted my turbo engine built to fit in my mini once the shell was ready but now looks like my 998 is going back in until i get the parts to build the engine.




Turbo Tel

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4th Jan, 2007 at 03:17:05am




On 4th of Jan, 2007 at 12:50am daniel_johno said:
every time i contact him my parts are finished ready to post out and i wait..... and wait......and wait....


Hell, that doesn't make me feel warm and fuzzy... hopefully my order is off the shelf..

Terry

website:- http://www.terryhunt.co.uk

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