Zac,
The cam in my L20 turbo works well.It has a bit of a lump at idle and really
kicks in with the turbo at around 3000-3500 revs and goes strong to 7000rpm with
the twin 45mm carbs.With the single 45mm carb it was dead by 6000rpm.Cant wait
to try it out with the new turbo.Under 3000 it's much like any other camed L20
just with a little less compression.It will happily plod around town under
3000rpm.The standard cams work ok but you dont see to many car manufactures
using the same cam in there N/A and turbo versions of the same motor.Another
milder cam I've tried is the 733A which has 270 duration,114 lobe seperation and
320 lobe lift which is a good street cam for a smallish turbo.I would suggest
Wade Cams in Victoria as they have been doing turbo grinds for years and have
been involved with a lot of the top turbo race cars over the years.I cant think
of the guys name over there(Errol will know) but he's very helpfull.They only
cost about $70 exchange.Remember you'll have to measure up for thicker lash pads
and something like Crow valve springs.Wade do heaps of grinds to suit whatever
your after.The only other turbo cam grinder I would recomend would be Ivan
Tighe. Wade also do billet cams but at a cost.The only reason I use such a large
cam is that I intend to push an L series motor to the limits over the next few
years.I'm currently building an L18 long rod motor with forged pistons and
custom manifolds to suit efi and a 500HP plus turbo but this is a long term
project as funds are low.
Andrew Smith
Zac Campbell wrote:
> Andrew, what does that L20 cam run like in your L20b with respect to
> driveability and rev range?
> As my L20b gets closer to turbo power one thing I have to consider is cam
> specs. I am unsure whether to chuck in a C cam (or other factory cam) for
> the time being or jump straight to a turbo grind cam. At the moment it has a
> Datrally mild grind cam in it. Your grind sounds promising! What did it cost
> to grind?
> The L20b is just stock at the moment. Before the turbo it wouldn't really
> rev too madly over 6000.
> Would your grind be suitable? or have any recommendations?
>
> thanks in advance!
> zac
>
> ----- Original Message -----
> From: andrew smith <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, October 05, 2000 2:58 AM
> Subject: Re: Turbo'd L series
>
> > Steve,
> > I've been told they tried a few different cams in the Z18T. The cam I use
> in the L20 is
> > 288 duration, 340 lift, 114 lobe seperation with crow springs and lash
> pads. The L
> > series and Z series differ in lift at lobe and ramp angle.I think most of
> the cam
> > grinders claim that there cams are a fury copy. Nizpro say that there Z18
> wouldn't rev
> > hard enough with the fury cam because of a to greater ramp speed so Phil
> Morris
> > designed another allowing the motor to spin to 8000rpm and produce 418hp
> at 7800rpm.
> > Andrew Smith
> >
> > Steve Taylor wrote:
> >
> > > Andrew,
> > > You wouldnt happen to know the specs on that fury bluebird copy cam
> would you?? I
> > > was after one similair to this for the new head on my z18et, i ended up
> getting a
> > > billet cam made up from camtech with the following specs. Duration, 278,
> lift, 312,
> > > lobe seperation, 114. Just wondering how it compared to the fury
> specs???
> > > Cheers
> > > Steve.
> > >
> > > andrew smith wrote:
> > >
> > > > Paddy,
> > > > The Mazda turbo is quite good and can be easily modified to flow over
> 400 HP if
> > > > you need to later down the track as i'm sure you will. The exhaust
> housing is
> > > > quite big so you'll probably have a late spool up especially if your
> only using
> > > > 1600cc.As for the cam the standard ones work ok but a proper turbo cam
> with
> > > > wider lobe seperation, long duration and high lift work a lot better.
> There
> > > > cheap to so I bought a couple of different grinds to try( I like the
> Fury
> > > > Bluebird copy the best).Water injection is a must but I had trouble
> with those
> > > > Ford expansion tanks cracking from a backfire.What dizzy are you using
> and what
> > > > advance? The L series love turbos and if you blow it up just throw
> another motor
> > > > in.
> > > > Andrew Smith
> > > >
> > > > paddy mcmillan wrote:
> > > >
> > > > > g`day,
> > > > > i bought the turbo and manifold together, someone had it made up
> to suit
> > > > > the mazda turbo and never got round to using it, it was apparently
> goin into
> > > > > a 1200.
> > > > > approximate measurements are
> > > > > turbine wheel 2.125"/2.44"
> > > > > compressor wheel 1.75"/2.5"
> > > > > compressor has a 1.75" inlet and 1.56" outlet
> > > > > its water cooled and has a split turbine housing and a 7lb
> wastegate
> > > > > actuator ,ive been lookin on the net for info but havent found
> anything
> > > > > specifically on it yet.
> > > > > im goin with the A87 head on it as my w53 needs some work done to
> it b4 i
> > > > > can reuse it.
> > > > > Terry do you know the specs of the A & B cams? timing, lobe
> seperation and
> > > > > lift would be good to know. and where did you get the specs from?
> > > > > cheers
> > > > > Paddy
> > > > >
>
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