[Roadsters] Transmission interchange question

[Gary and Cindy Ault]

Oliver,

I put a '69 U20 into my '66 1600 in 1972.  Had to change the exhaust
system and the radiator because of fit-up differences, but they bolt together
fine.  The 4-speed seems to take the higher torque of the 2L engine just
fine.  The engine is metric and the rest of the car (pretty much) is SAE.

If
you fit a late transmission to an early block, you'll need to get metric bolts
to replace the SAE parts on the early installation.  Also, if you fit a
five-speed to an engine formerly equipped with a four-speed, you need to
change the backing plate (which goes between the engine and transmission), as
well.  The plates are different thicknesses on 1600/4-speeds and
2000/5-speeds.

Gary



________________________________
From: oliver
<sumton at sbcglobal.net>
To: Datsun Roadster List
<datsun-roadsters at autox.team.net>
Sent: Fri, May 14, 2010 2:40:43 PM
Subject:
Re: [Roadsters] Transmission interchange question

one more question on this
topic - does the 5 speed or later 4 speeds connect to the pre 67.5 engine? 
has anyone actually done this?  I ask this because I was told by many that the
plastic fan would connect to any 1600 engine. not true - the early (pre 67.5)
engines are sae, not metric, and that fan does not fit.

is there the same
issue with the tranny's?  if not, are those fittings on all cars sae????
--------------------------------------------------
From: "Pete Peters"
<ppeters914 at comcast.net>
Sent: Friday, May 14, 2010 12:56 PM
To: "Datsun
Roadster List" <datsun-roadsters at autox.team.net>
Subject: Re: [Roadsters]
Transmission interchange question

> Never heard of connecting a Miata
transmission to a R16 or U20 motor, so would be interested in that website
link.
> 
> Options are limited because the R16 and U20 engines have the
starter on the left. Options I am aware of:
> 
> roadster 4-speed
> roadster
5-speed
> Datsun Diesel transmission, or use the bellhousing to adapt 71B or
71C trans. Search 311s.org forums for more info.
> 
> Pete
> 
> ----- Original
Message ----- From: S B <psbiker1 at yahoo.com>
> Subject: [Roadsters]
Transmission interchange question
> To: datsun-roadsters at autox.team.net
>
Date: Thursday, May 13, 2010, 9:23 PM
> 
> After almost a year of being off
the list I'm happy to be back.
> 
> I've got a white 66 1600 that's pretty
much stock. I'm considering rebuilding or replacing my 4 speed transmission,
even though it's still working fine.
> 
> Is there any information or website
out there that has a list of transmissions that will bolt up to the R16 engine
with minimal or no modifications? I did find a great site that gives details
on installing a Mazda Miata transmission.
> 
> I'm just looking for what my
options are.
> 
> Steve 
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