if I was going to use the Z22 crank idea what block would I start with?
CA20 or a jap L20 block?
if I should use the L20B how do I tell the difference between a jap or aust
block?
Dave
-----Original Message-----
From: Heath <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Wednesday, 9 August 2000 5:13
Subject: Re: 200hp L20 on tha cheap
>Murray Coote did my last head, he no longer does them.
>cost me $1300 to get done.
>
>use a Z22 crank, not the Z24
>Z22 is a counter weight crank, the Z24 isn't
>i know i guy with twin 45's and a Z22
>making 163 rear wheel HP
>he's chasing 48's, trying to get a bit more top end.
>
>Heath
>
>----- Original Message -----
>From: "David Costello" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Sent: Tuesday, 8 August 2000 8:49
>Subject: Re: 200hp L20 on tha cheap
>
>
>>
>> who in Brisbane would you recomend to do up a head to those specs?
>> and what head would be best to use?
>>
>> -----Original Message-----
>> From: Brad HALLETT <[EMAIL PROTECTED]>
>> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
>> Date: Tuesday, 8 August 2000 7:46
>> Subject: Re: 200hp L20 on tha cheap
>>
>>
>> >Andrew
>> >Bottom line is '200hp' and 'on tha cheap' don't easily go together. My
>> >advice is directly inline with Errols and is a proven formulae over the
>> >years:
>> >40 mm inlet ports with turning vanes behind valve
>> >44 mm inlet valves
>> >38mm exhaust ports with turning vanes behind valve
>> >36mm exhaust valves
>> >Polished exhaust port
>> >Ground inlet ports (not polished - air turbulance required so good rule
>is
>> >'cats tongue')
>> >Don't overbore the block too much to reduce high rev cylinder wall flex,
>> but
>> >use forged flat tops.
>> >Consider using high pin heights and long rods to assist rod:stroke ratio
>> for
>> >easier revs.
>> >Aim for 11 or 12:1 compression, i.e. match deck of block to piston
>heights
>> >and modify CR through combustion chamber manipulation.
>> >Use 45mm Webers and matchport manifold both ends
>> >Spend $$$ at reputable dyno shop. In Qld I would only use Greg
>Summerville
>> >at Jindalee.
>> >
>> >regards
>> >Brad
>> >
>> >----- Original Message -----
>> >From: "Errol Smith" <[EMAIL PROTECTED]>
>> >To: <[EMAIL PROTECTED]>
>> >Sent: Tuesday, August 08, 2000 7:13 AM
>> >Subject: Re: 200hp L20 on tha cheap
>> >
>> >
>> >> Andrew,
>> >> To make 200hp reliably, you will need the comp up around 11:1. To run
>> 11:1
>> >> reliably you will need forgies. All the heads I have seen making
around
>> >> 200hp on L series are using approx 40mm inlet ports with 44mm inlet
>> >valves.
>> >> Exhaust ports are taken out to the max with the humps completely
>removed
>> >> and a smooth radius on the upper port surface. Use 36mm exhaust
valves.
>> >The
>> >> valves are usually one piece 214N S/Steel, stellite tipped, tuliped &
>> >swirl
>> >> polished.
>> >> Port profiles on the inlet side are the key to making the power. Not
>only
>> >> do you open the port sizes but shape the floor of the port into a D
>laid
>> >on
>> >> its flat. This gives the largest flow for the port size.
>> >> The next step would be to fit an injection system eg Wolf Motec etc.
>You
>> >> wont make much if any more at the top end, but it will make it
smoother
>> >and
>> >> more grunty out of corners.
>> >> My two bobs worth anyway.
>> >> Cheers
>> >> Feral Errol
>> >> ----------
>> >> From: Andrew Kubenk <[EMAIL PROTECTED]>
>> >> To: [EMAIL PROTECTED]
>> >> Subject: 200hp L20 on tha cheap
>> >> Date: Monday, August 07, 2000 10:51
>> >>
>> >>
>> >> ive got a mate with a fairly tough L20 in a stanza and we were
>discussing
>> >> freshening
>> >> up the old donk.
>> >> so
>> >> i need a few suggestions on making about 200 flywheel hp fairly
>reliably.
>> >> we are starting with, 2x45 webers, datrally manifold, fairly ported
>head,
>> >> larger
>> >> valves, flat tops.
>> >> please advise as to how far the head (port, polish, valve size) and
>> >> block(pistons?
>> >> balancing etc) needs to go as well as possible upgrades to induction
>> >> without
>> >> too many electronic gizmos.
>> >> please advise and thanking in advance.
>> >> andrew
>> >>
>> >>
>> >>
>> >
>> >
>>
>>
>
>
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