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Home > 998cc > 12g295 or 12g940

longy

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Bicester

1st Nov, 2015 at 09:34:35pm


Seeing that 12g295 are getting harder to find in good condition and costing as much as they weight in gold if you do find one, are there any disadvantages going for a 12g940? Or it is just not a good idea?

I'm building a 998 with a gt1544, phase 2 cam.

1972 998 TURBO SLEEPER

robert

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uranus

1st Nov, 2015 at 09:47:39pm

should be good chris , but if using the 940 head and that turbo i would use a softer cam , a mg metro of kent/piper 260 .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

slater

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Suffolk / Birmingham

1st Nov, 2015 at 10:20:35pm

Yeh, its a bit of a trade off really. The valves are bigger in the 940 but are shrouded by the bore/pocket a bit more. Definitely a good budget option tho.

wil_h

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Betwix Harrogate and York

2nd Nov, 2015 at 08:19:05am

As above, keep the valves a sensible size. 33in 29ex is all you need.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


longy

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Bicester

2nd Nov, 2015 at 09:42:44am

Thanks for the feedback guys, i think ill give it another week of hunting and if i cant find a 12g295 i'll go with the 12g940.

T

1972 998 TURBO SLEEPER

longy

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1547 Posts
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Bicester

2nd Nov, 2015 at 09:44:02am

Thanks for the advice Robert, i have been hunting for a MG metro cam, but like with the heads they seem to be hard to find. I'll look at the 260 option though.

1972 998 TURBO SLEEPER

Rammie2000

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belgium

2nd Nov, 2015 at 09:58:39am

im running a 12g940 on my 998 for 2 years now. no problems so far. do run a metro cam in it.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018


longy

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1547 Posts
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Bicester

2nd Nov, 2015 at 10:03:07am

Thanks Rammie

1972 998 TURBO SLEEPER

longy

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1547 Posts
Member #: 2727
Post Whore

Bicester

2nd Nov, 2015 at 10:03:07am

Thanks Rammie

1972 998 TURBO SLEEPER

wil_h

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Betwix Harrogate and York

2nd Nov, 2015 at 11:14:58am

The MG cam also the Kent 500 cam, still available off the shelf.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


longy

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Bicester

2nd Nov, 2015 at 01:34:38pm

Cheers Will

1972 998 TURBO SLEEPER

Shauna

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Swansea boyo!

2nd Nov, 2015 at 02:34:41pm

I've got a 295 on mine, took me months to find a good unskimmed one. Really hope I never end up doing any damage to it!

They don't die, they just get faster!

Chalkie

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Northamptonshire.

2nd Nov, 2015 at 07:15:42pm

+1 will be running a 295.

But a 940 can be used just need pockets I did upload the drawing for people to use

longy

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Bicester

2nd Nov, 2015 at 07:17:25pm

i saw many thanks chalkie

1972 998 TURBO SLEEPER

longy

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1547 Posts
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Bicester

2nd Nov, 2015 at 07:17:27pm

i saw many thanks chalkie

1972 998 TURBO SLEEPER

gr4h4m

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Chester

2nd Nov, 2015 at 09:53:37pm

I have run both, the 940 has made more power

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

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