g`day,
mitsubishi starion pistons, cool! i only just finished building an
Astron2000 motor for a mate`s Sigma and i was lookin at its pistons as they
wouldve been ok for a datto too, 85mm flattops they were.
Paddy
----- Original Message -----
From: jamesf <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, October 13, 2000 9:22 AM
Subject: Re: time to build L20 turbo
The Z18et has 45cc (I cc'd it the other night)
The pistons are Mitsubishi Starion and have a dish vol of 18cc
pin size of 21mm and a pin height of 35mm
What makes them turbo pistons?, Mitsubishi does :)
They have heaps of meat on the crown.... very thick compared
to the stock nissan pistons I have laying around...
Paddy McMillan wrote:
> James,
> whats the CC on the Z heads? where did you get them pistons from? what
> makes them a turbo piston?
> hows about this for an easy build: L18 block/crank(78mm) and L16(133mm)
> rods giving a .85PDH, a 39cc head would give about 7.5:1, a 42cc 7.3, or
a
> 45cc for about 7:1, only 1770cc tho.
> just a thought anyway!
> Paddy
>
> ���
>
> ----- Original Message -----
> From: jamesf <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, October 13, 2000 12:37 AM
> Subject: Re: time to build L20 turbo
>
> > Thanks again Errol
> >
> > Still working on the combos for these turbo pistons I have...
> >
> > How do you think you would go with a L20B block that had been
> > decked 80 or 100 thou with a Z18et head bolted on top... would the
> > timing chain be to loose? or would the tensioner take it up?
> > you can't use a head saver kit on the cam like a L series head....
> >
> > I am thinking ... L20B/Z20 block & crank + L20b rods + turbo pistons
> > + Z18et head etc...
> > = 3.55mm piston deck height (PDH)....
> > this gives a ratio of around 6.4:1 (a bit low)
> >
> > Now if I can get away with decking the block 80 or 100 thou things
> > look a little better....
> >
> > 80 thou off the block gives a PDH of 1.55mm and a resulting
> > comp ratio of around 7.2:1
> >
> > 100 thou off gives a PDH of 1.05mm and a comp ratio around 7.44:1
> > (pretty good compared to the 7.3:1 the Z18et has as standard )
> >
> > I would probably go the 80 thou as it would allow for a 1mm over bore
> > at a later date without it raising the compression ratio to far...
> >
> > These Turbo pistons are only around $100 each in 85 or 86mm
> > I will find a use for these damm pistons yet :)
> >
> > Cya
> > JamesF
> >
> >
>
--
________________________________________________________________________
James Fitness
Director
Data Scribe Australia Pty Ltd
http://www.datascribe.com.au
Computers and Supplies
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