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General Category => General Discussion => Topic started by: lazlokovacs on June 03, 2021, 03:30:58 PM

Title: early late troichoidal pump checking
Post by: lazlokovacs on June 03, 2021, 03:30:58 PM

The round oil pump in the later 1100 cali vintage engines/early norge/breva engines...

part number 976134

Are there any official guidelines on assessing these for re-use, how much slop is permissable etc?

Can't find anything in the various workshop manuals

The one on my bench has come out of a Cali engine that shat the bed when the sprocket danced off the oil pump, not sure if the oil pump itself or the nut or the woodruff key was the culprit....

Replacements are shockingly expensive!

Title: Re: early late troichoidal pump checking
Post by: Don G on June 03, 2021, 03:58:30 PM

If you cant find any info on the Guzzi pump, you could look into the automotive world, like Buick 3800 etc. Basically a pump is a pump dont matter who made it or used it, I would think.  DonG

Title: Re: early late troichoidal pump checking
Post by: guzzisteve on June 03, 2021, 06:49:38 PM

It is a Breva engine. Not the block Look EV but not Hydro, keep looking it's in one of the Cali manuals, otherwise go back to early 1100's, like Sport 1100.

Title: Re: early late troichoidal pump checking
Post by: RinkRat II on June 03, 2021, 07:14:40 PM

   2000 V11 oil pump dimensions. Maybe compare to what you have.
(https://i.ibb.co/nM6P2pm/20210603-170742.jpg) (https://ibb.co/nM6P2pm)


       Sorry it's sideways :evil:

     Paul B :boozing:

Title: Re: early late troichoidal pump checking
Post by: lazlokovacs on June 03, 2021, 07:19:30 PM

Thanks guys, problem is they changed to the later toichoidal pump, (the round one) on the very last cali engines...

Title: Re: early late troichoidal pump checking
Post by: RinkRat II on June 03, 2021, 07:42:23 PM

 Standard oil pump clearances...
(https://i.ibb.co/JnZ482D/20210603-173506.jpg) (https://ibb.co/JnZ482D)

                                                   
(https://i.ibb.co/DW2MhbG/20210603-173515.jpg) (https://ibb.co/DW2MhbG)

                                                   
(https://i.ibb.co/qMDDN7Q/20210603-173526.jpg) (https://ibb.co/qMDDN7Q)


    More like this?  Cover, if you have one .001" flat.

     Paul B :boozing:

Title: Re: early late troichoidal pump checking
Post by: lazlokovacs on June 04, 2021, 02:42:23 AM

thank you sir!