the Starion ones have reliefs...whether they are in the right spot
is another question....but there is heaps of meat to put them in if
needed....
Adam wrote:
> What about the valve releif for the Pistons?
>
> At 10:30 13/10/2000 +1000, you wrote:
> >Hi Errol
> >
> >The only reason I thought of decking the block was because the first motor
> >Datrally built for me, Les decked my L20B block 100 thou to get the
> >compression up.... and there was plenty of meat left around the water
> >galleries in the block and it never gave me any trouble....
> >
> >The dish Vol of the Starion pistons is 18cc
> >with the 18cc and the PDH of 3.55mm below you should get around 6.4:1
> >I think 80 thou off the block should do it just nicely..... it would drop the
> >PDH to 1.55mm... making for a much nicer ratio of around 7.2:1
> >
> >BTW. if you take a standard L20b (with standard L20B pistons etc) and bolt
> >a Z18 head to it you end up with around 8.4:1 (getting a bit high, but with
> >full management computer and Big intercooler it would probably be ok)
> >
> >another combo I think would possibly be workable...
> >L20B block + Z22 crank + L20B rods + 85mm starion pistons
> >= PDH of 0.55mm (below) and a total capacity of 2088.2cc
> >and a ratio of around 8.16:1
> >If you used 86mm starion pistons you would end up with 2137.64cc
> >and around 8.32:1 .... getting a bit high again but with full management and
> >big intercooler.... it would be a torquey little sucker :)
> >
> >
> >Cya
> >JamesF
>
--
________________________________________________________________________
James Fitness
Director
Data Scribe Australia Pty Ltd
http://www.datascribe.com.au
Computers and Supplies
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