750 Sport restoration project

discussion about the 750 Sport and '89/'90 900SS, which share many mechanicals with the Paso series
HIGHWAY89
paso grand pooh-bah
Posts: 518
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: 750 Sport restoration project

Post by HIGHWAY89 »

They are pretty rough guestimate, another look tells me pistons more like 25 mm and maybe 26.5 mm on bore
Andrew2
paso grand pooh-bah
Posts: 504
Joined: Thu Oct 27, 2011 7:47 am
model: 750 Sport
year: 1988
Location: Wollongong,Australia

Re: 750 Sport restoration project

Post by Andrew2 »

I'll measure mine tomorrow and get back to you. The seal is 26mm outside diameter so your bore would probably be less than that I would say.
Andrew2
paso grand pooh-bah
Posts: 504
Joined: Thu Oct 27, 2011 7:47 am
model: 750 Sport
year: 1988
Location: Wollongong,Australia

Re: 750 Sport restoration project

Post by Andrew2 »

Here's the measurements but for some reason the piston diameter kept coming out higher than the bore diameter haha. I couldn't get the verniers far enough into the bore. The piston is a nice snug fit with a small amount of movement.
Image

Image

Image
HIGHWAY89
paso grand pooh-bah
Posts: 518
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: 750 Sport restoration project

Post by HIGHWAY89 »

Andrew it looks as though we both won't have any worries there, go fo it mate , especially with the v seal you'll be sweet. Looking forward to seeing your progress going forward.
Andrew2
paso grand pooh-bah
Posts: 504
Joined: Thu Oct 27, 2011 7:47 am
model: 750 Sport
year: 1988
Location: Wollongong,Australia

Re: 750 Sport restoration project

Post by Andrew2 »

Cheers. I'll have a crack at it in the next couple of days. Once that's done it's ready to ride so fingers crossed it'll work.
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