Good. All that means is you change the backing plate.
FWIW, I have several waterpumps and the backing plates are different and I
use the best plate that matches up to the waterpump. Some are terrible in
this regard. I also have to trim the gasket too.
Mike
----- Original Message -----
From: "The Belgian Roadster" <chriss@euregio.net>
To: "datsunmike" <datsunmike@nyc.rr.com>; "Steve Allen" <dumpdude@pon.net>;
<datsun-roadsters@autox.team.net>; "Thomas the Swede" <csp311@telia.com>
Sent: Thursday, June 07, 2001 2:35 AM
Subject: Re: H20 Water pump conversion
> I removed the backing plate of both pumps.
> On both the water passage, channel is drilled, same size also.
> Defenitly just the backing plate is different!
> Chris - The Belgian Roadster
> http://albums.photopoint.com/j/AlbumIndex?u=1424148&a=10670695&f=0
>
>
> -----UrsprC<ngliche Nachricht-----
> Von: "datsunmike" <datsunmike@nyc.rr.com>
> An: "The Belgian Roadster" <chriss@euregio.net>; "Steve Allen"
> <dumpdude@pon.net>; <datsun-roadsters@autox.team.net>
> Gesendet: Donnerstag, 7. Juni 2001 01:55
> Betreff: Re: H20 Water pump conversion
>
>
> > But what's behind the blocked off hole? Is the water passage still
> there?
> >
> > When I received the H20 engine the waterpump had both passages.
> >
> > Mike
> >
> > ----- Original Message -----
> > From: "The Belgian Roadster" <chriss@euregio.net>
> > To: "Steve Allen" <dumpdude@pon.net>;
> <datsun-roadsters@autox.team.net>
> > Sent: Wednesday, June 06, 2001 12:47 PM
> > Subject: H20 Water pump conversion
> >
> >
> > > Hi all,
> > > As told, I finally had time to compare both water pumps.
> > > Click the link to see by yourself the differences.
> > > http://www.schauff.be/water_pump.htm
> > > Right one, with the bolt close to the hose connexion is
> 21010-20H25
> > > former partnumber of
> > > 21010-78200...78202...78203...78225...78226...J5125 these normaly
> fits
> > > the R16 engine(This is the number from www.carparts.com)
> > > This waterpump was also used on Datsun 230 with H20 engine.
> > > Left one, with the pipe is H20-Urvan build for high rmp partnumber
> > > 21010-R9025....R9026
> > > The distances between the bolts are the same for both pumps.
> > > Main difference is on the backing plate.
> > > As you can see H20-Urvan has only one hole, more like U20, but
> does
> > > not fit U20 because of bolt pattern.
> > > Second difference is H20-Urvan is build for use with a
> visco-clutch
> > > vent (that's why it has studs in front).
> > >
> > > -----Urspr|ngliche Nachricht-----
> > > Von: "Steve Allen" <dumpdude@pon.net>
> > > An: "The Belgian Roadster" <chriss@euregio.net>
> > > Gesendet: Dienstag, 5. Juni 2001 05:43
> > > Betreff: Re: H20 Water pump
> > >
> > >
> > > > Chris,
> > > >
> > > > Could you provide me with the part number for the H20-Urvan
> water
> > > pump? I stroked my R16 to a 2 liter using the H20 crank. It would
> be
> > > worth it to see if
> > > > the water pump would bolt up to my R16. OEM pumps cost around
> > > $120.00 USD for th R16. Thanks.
> > > >
> > > > Steve
> > > > 67.5 stroked 2 liter
> > > > 66 x 2
> > > > RP, CA
> > > > 311 Skid Marks
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