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Gavin Wakely

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Milton Keynes

8th Dec, 2005 at 05:34:49pm

Is 250 thou piston deck thickness adejate for high boost ?
Pistons are Foged Omegas (Flat top origanaly but then machined a 6cc dish)

http://i28.photobucket.com/albums/c248/spe...er1/mini007.jpg

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Dangerous

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Swindon

8th Dec, 2005 at 08:09:32pm

what so they are 1/4" down the bore at tdc ??


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Miniwilliams

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Proven 200+bhp & Avon Park 05,06,07 Class D 3rd place

8th Dec, 2005 at 09:25:24pm

well they say it's best to have things up high, but i no of a guy running 150 -16o bhp with out any probs, and his pistons were a long way down the block to.
MW

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Miniwilliams

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5329 Posts
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Proven 200+bhp & Avon Park 05,06,07 Class D 3rd place

8th Dec, 2005 at 09:26:46pm

well they say it's best to have things up high, but i no of a guy running 150 -16o bhp with out any probs, and his pistons were a long way down the block to.

MW

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

fastcarl

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leeds/wakefield.

8th Dec, 2005 at 09:29:01pm

he means crown thickness surely.

carl

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Dangerous

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Swindon

8th Dec, 2005 at 09:32:40pm

On 08/12/2005 21:29:01 fastcarl said:
he means crown thickness surely.

carl



Yes he doe's

In that case the thickness is ok,but 6cc dish won't be a lot of good as the head will only be able to be increased to 33cc.meaning that the c/r ratio will be high.
Some peeps are using low deck hieght(gudgeon pin centre to top),meant for a stroked engine,but with the std stroke crank so they are down the bore on tdc to reduce compression(AND SQUISH )


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paul wiginton
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9 times Avon Park Class C winner

Milton Keynes

11th Dec, 2005 at 07:45:24pm

Gavins head has 34cc in it

I seriously doubt it!

minimark

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newcastle

11th Dec, 2005 at 07:53:58pm

nice .. any pics??

Everyone knows that instructions only have to be read if the thing doesn't work....

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