Zac,
Thanks for the information. If anyone can verify that the Z24 crank does
fit an FJ20 please let me know. I was told the FJ24 crank was a one off
item and made of "unobtanium".
Cheers
Feral Errol
----------
> From: Zac Campbell <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: Re: FJ mods
> Date: Saturday, April 22, 2000 3:50
>
> Errol, it has been noted on this list before that the Z24 crank can be
used
> to stroke an FJ20, but it doesn't rev!!
>
> Don't know if it is true, can someone else verify?
>
> zac
>
> ----- Original Message -----
> From: Errol Smith <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, April 21, 2000 9:14 PM
> Subject: Re: FJ mods
>
>
> > Luke,
> > The main problem with the NA (naturally aspirated) FJ20 is the lack of
> > abilty to get a high CR (compression rato). The NA FJ20E cannot get a
CR
> > over 9.8 approx, due to the head design. Valve angles in the head are
> wrong
> > and pistons get in the way of valves etc. So if you shave the head you
> must
> > put reliefs in the pistons, that further lowers the CR. The best you
can
> > expect from a NA FJ 2.0 is approximarely 185 - 190 hp, and that is a
good
> > one. In NA form the engines are good for an easy 160 - 170 hp, but
over
> > this it will cost you a large amount to get those last few hp. In stock
> > form the NA head flows sufficiently to acheive approximately 240hp so
head
> > mods will not improve the HP capacity much if at all. It may even cause
> you
> > to lose some driveability at mid range speeds. Rather than looking for
> more
> > power from the engine, maybe look at ways to lose less of the
available
> > energy to things like cooling fans, alternators, flywheels, body
weight,
> > overall gear ratios etc. You can still get really good performance
from
> > the NA engine at 170 hp as it is a high torque engine design.
> >
> > The FJ engine was originally designed as the FJ24 NA. In this form the
> > swept volume of the cylinder is sufficient to achieve CR's of 11:1 and
> then
> > you can get some real power (260hp is realistic). To the best of my
> > limited knowledge the Z24 crank is not compatible with the FJ24 block.
> > (cylinder spacing is different I am told?). To make an FJ 24, you need
the
> > FJ24 crank, rods and pistons.
> >
> > The FJ's weight is a real downer in NA form in terms of hp/lb or Kw/Kg
> > engine mass. In spite of this I think the FJ is still Nissans best
Turbo
> > engine in terms of reliability for power output. SR's do have a habit
of
> > breaking exhaust rocker arms when used at reasonably high engine
speeds.
> > Check the comments on the SSS automotive site on their engine designs
etc
> > for more info on Datsun/Nissan engine designs and especially the FJ
> series.
> > Cheers
> > Feral Errol
> >
> > ----------
> > From: Leadex <[EMAIL PROTECTED]>
> > To: ozdat <[EMAIL PROTECTED]>
> > Subject: FJ mods
> > Date: Friday, April 21, 2000 6:54
> >
> > I am desperate for some cheap ways to get some power from my FJ running
on
> > webbers. The engine is in good nick as it is, so will a bit of simple
head
> > work and bigger valves get much more power? Also, will Z24 parts fit to
> > build a 2.4L engine?
> > What is a cheap four cylinder place that can supply the parts and do
some
> > of the work?
> >
> > Thanks
> > Luke
> >
> >
> >
>
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