Lee,
70 & 71 Zs had a removable bell housing or in other words a 3 piece tranny
casing. The later cars reverted to 2 piece casings like the 4 speed.
Mike
----- Original Message -----
From: Lehinger <Lehinger@fwi.com>
To: Datsun-Roadsters <Datsun-Roadsters@autox.team.net>; Gordon Glasgow
<glasgow@serv.net>
Sent: Thursday, September 21, 2000 7:48 AM
Subject: RE: Transmission gear swapping
> My brother put a u20 5 spd in his 71 Z and used the stock z bell
> housing....did early cars come with a removeable bellhousing? This sure
> messed up the speedo reading... I drove it to N. Mich with 70 speed
limit -
> was reading 85 mph in 5 gear... I wondered why it took so much less time
to
> get home... I was actually running closer to 100-110. no tickets...
> Lee Ehinger
> OROC
> Ft Wayne IN
>
> -----Original Message-----
> From: owner-datsun-roadsters@autox.team.net
> [mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of Gordon
> Glasgow
> Sent: Tuesday, September 12, 2000 7:45 PM
> To: datsun-roadsters@autox.team.net
> Subject: Re: Transmission gear swapping
>
>
> At one time Nissan Comp sold a special bellhousing to mount a U20 5-speed
> in a Z. But as was
> mentioned, the Z 5-speeds came with an integral bellhousing. Of course, a
> true hard-core hot-rodder
> wouldn't let a little thing like that stop him if he had access to a
welder
> who was good enough to
> cut the bellhousing off a Z and weld on a roadster one. But it would
really
> have to be done
> precisely or else the input shaft would probably bind up in the back of
the
> crankshaft.
>
> Kyle Hagemann wrote:
>
> > > The Roadster tranny is unique onto the R and U engines. So I know
> > > that a 510 tranny isn't a bolt-up swap because of the bellhousing and
> > > who knows what else (length? starter location? Whatever). BUT..
> > > are the internal designs similar? Can I pull the internals from a 510
> > > box and put them into a Roadster box? The 510 has two different
ratios,
> > > one that matches our Roadsters and another, lower ratio. I haven't
> > > compared part numbers on the fiche yet; that'll probably tell me, but
> > > has anyone out there successfully done such tinkering?
> > >
> > > -- John
> > > John F Sandhoff sandhoff@csus.edu Sacramento, CA
> >
> > Hi John-
> >
> > I've wondered this too, especially as the Z units seem to be more
> > common (read=inexpensive) than the roadster trannies.
> >
> > Way-back-in-tha-day, before the 5speed 280Z's came along, it was
> > not unheard of to put a roadster trans in a 240Z. Building theory
> > on hearsay (heresy?;-) it stands to reason that the L bellhousing
> > can be swapped with the U/R bellhousing... (I can hear someone out
> > there thinking, "U/R silly!")
> >
> > I have it first hand from a local Z dude that the servo-type roadster
> > five speeds appear nearly identical to the BW-type Z units. 'Course,
> > things can look a lot alike and still be incompatible.
> >
> > So I dunno! But it seems that you could put a Z/ZX/510/PU/200sx/etc
> > trans into a roadster with a bellhousing swap. But it's likely more
> > complicated... bearing bores and shift rod holes have been mentioned
> > as a stumbling block when converting a CA tranny to L-series duty; I
> > wouldn't be surprised to hear that similar shenanigans are required
> > for a L->U/R swap.
> >
> > Anyone have some of ye olde Z-carre hop up manuals from the mid/late
> > 70's hanging about, and/or have first-hand knowledge of what it takes
> > to get a roadster unit in a Z? That tech oughtta be backwards-
> > compatible with a Z->roadster swap.
> >
> > 'Course, I've just shelled out the bucks to fix my Roadster 5spd, so
> > there better not be an easy L-tranny swap;-D
> >
> > HTH
> > Kyle
> > still broken
>
> --
> Gordon Glasgow
> http://www.gordon-glasgow.org
>
>
>
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