Daniel
Th hypereutectic pistons gets its name from the higher levels of silicon in
the alloy. This level of silicon actually makes the piston weaker than cast
in high po applications. The only benefit of them is having less wear
characteristics i.e. less friction.
Regards
Brad HALLETT
http://www.powerup.com.au/~bhallett
http://www.datrats.com.au for all Datsun performance equipment!
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Daniel Kroehn
Sent: Thursday, 15 March 2001 2:32
To: [EMAIL PROTECTED]
Subject: Re: Z18/Z20, Forged pistons
Tom,
since you are turboing your engine just putting a little more boost through
the sucker will probably have the same effect as the extra little bit of
displacement. Check with some performance shops about the pistons. I know
for about 350 - 400 bucks you can get yourself a nice set of high silicon
content pressure cast pistons that will be a lot stronger than normal cast
pistons. From memory they are called Hypueretectic (something like that)
pistons. Could you put some shorter rods in it instead of the Z20E ones?I
know my old rally engine has toyota 18R rods and some breed of flat tops, a
standard l20 crank (I think) and a little boring to give just over 2.2.
Might pay to look for a rod catalogue and find something to meet your needs.
Just some food for thought anyway.
Daniel Kroehn
Recommending Datrats, supplying quality datsun performance parts
www.Datrats.com.au
----- Original Message -----
From: Tom Richardson <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, March 15, 2001 11:23 AM
Subject: RE: Z18/Z20, Forged pistons
> Thanks for the replies Brad, Daniel, Mark
>
> The reason I'm asking about forged pistons is not because I am keen to
blow
> $1400+ or think I'm going to be running 25psi of boost on the street, it's
> because if I were to pursue a Z22 stroker with the long Z20E rods (to
> reclaim some revs) there is no piston available which produces the right
> compression ratio with the NAPS/Z cylinder head (or even one which
produces
> a realistic N/A compression ratio). I need something with a 28mm height
and
> 15cc dish. What other options are there besides custom forged pistons?
Does
> anybody know of an OEM cast piston with a 28mm height and 15cc dish?
2187cc
> turbo would have been sweet but I'll stick with a set of 31.6mm ACL cast
> pistons with chromoly rings for $215 and 1998cc if the only other choice
is
> exy custom pistons.
>
> Thanks again guys
>
> - Tom
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Brad HALLETT
> Sent: Thursday, 15 March 2001 2:35 AM
> To: [EMAIL PROTECTED]
> Subject: RE: Z18/Z20, Forged pistons
>
>
> Precision do 'em (http://apep.alphalink.com.au/), excellent piston at the
> right price. I would order them through Datrats though to ensure you get
> the best $$$.
>
> Many people disagree with forged pistons, and it basically falls back onto
> what you expect from your motor. If you want twin turbos but only around
> the street at low to mid psi then maybe you will survive with cast slugs.
> If you want a reliable 6500rpm-9500rpm high comp performer then go to the
> expense of forgies. Don't spend a mint on an engine and have a piston
self
> destruct at the worst moment.
>
>
>
> Regards
> Brad HALLETT
> http://www.powerup.com.au/~bhallett
>
> http://www.datrats.com.au for all Datsun performance equipment!
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of mark krawczuk
> Sent: Wednesday, 14 March 2001 11:40
> To: [EMAIL PROTECTED]
> Subject: Re: Z18/Z20, Forged pistons
>
>
> Hello Tom
>
> >
> > What I wanted to know was, has anybody had custom forged pistons made to
> > order? Where from, and how expensive were they? Alternatively, does
> > anybody know of an OEM piston of this size (87mm bore) with 21mm
> > wristpins?
>
>
>
> hi, i got a price on +1mm forged pistons for a l20b motor , and th e guy
> quoted me $1400, yeah right, the guy seemed a wanker,saying that forged
> pistons are the only way to go, ESPECIALLY for a turbo.
> i spoke to a guy in queensland who ONLY DOES TURBO STUFF and when i
asked
> him about using forged pistons, he said f**K that, he has never used
forged
> pistons, and at the moment he said he was doing a v8 ford with twin turbos
> using CAST pistons.....
>
>
> my setup is : z2.4 crank, l20b block,z24 head,microtech digi 1,to3
turbo,
> and programmable ignition and CAST pistons ,which i am definately using.
>
> he said the that u have to be very carefull about leaning out the fuel
mix,
> (as with any car) if its too lean it will damage the pisons , and a
> forged set will last about 7 seconds longer than cast if the motor is
> leaned out.
> >
>
>
> mark
>
>
>
--membersozdat-------------------------------------------------------
OZDAT Mailing List Please Note:-
Send (un)subscribe requests to [EMAIL PROTECTED]
Send submissions to [EMAIL PROTECTED]
No unauthorised redistribution of this email
http://www.ozdat.com/ozdatonline/index.htm
http://www.ozdat.com/ozdatonline/listindex.html
http://www.mail-archive.com/[email protected]/
---------------------------------------------------------------------
