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Simon

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736 Posts
Member #: 1865
Post Whore

Norwich, Norfolk

1st Feb, 2008 at 11:23:45am

I picked up a cheap 1275 head on ebay for £85, it needs an acid dip and new valves, springs, guides etc but im trying to find out what stage it is at the mo.

It is a 12G940 head with "OE 55-20-0" stamped on it.

A bit of research show it has been worked on by Oselli and they say this will have a 20cc chamber with 1.312 inlet and 1.156 exhaust valve. It is a 9 stud head and just one level up from standard.

Any comments on the head? and what is "one level up" ?

http://turbominis.co.uk/forums/index.php?p=vt&tid=170151

Vegard

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7765 Posts
Member #: 74
I pick holes in everything..

Chief ancient post excavator

Norway

1st Feb, 2008 at 11:27:32am

Let's just say it's useless for a forced induction application because of the small chambers.

One level up means nothing.

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.

fab

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1497 Posts
Member #: 100
Parisien Turbo Expert

Paris\' suburb

1st Feb, 2008 at 11:51:55am

depend, combined with 15 or 18cc pistons,will make a very good set up, oselli st1 head seem to be road set up with mild cam and mid rev efficiency, that's exactly what's a turbo engine is

MikeRace

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6549 Posts
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#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

1st Feb, 2008 at 12:28:10pm

Get captain Benross to Open the Chambers up!

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


Simon

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736 Posts
Member #: 1865
Post Whore

Norwich, Norfolk

1st Feb, 2008 at 12:38:39pm

im getting it acid dipped this weekend and to get the ports and valves measured as I have a feeling there might be some post oselli work on it.

http://turbominis.co.uk/forums/index.php?p=vt&tid=170151

Jay#2

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2500 Posts
Member #: 648
Post Whore

Northern Ireland (ex AUS)

1st Feb, 2008 at 12:47:38pm

It's been skimed to reduce chamber size, and as Vegard says you potentially want to do the opposite (depending on boost, pistons, engine spec etc).

On 7th Nov, 2008 Nic said:
naeJ
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!!!!!!sdrawkcab si gnihtyreve ?droabyekym ot deneppah sah tahw ayhwdd

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