showa 900ss shock -

discussion about the 750 Sport and '89/'90 900SS, which share many mechanicals with the Paso series
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jetboy
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Joined: Sat Nov 08, 2008 3:51 am
model: 750 Sport
year: 1990
Location: oakland, ca, usa

showa 900ss shock -

Post by jetboy »

So i picked up a stock 1999 900ss shock - looks to be in good shape. Im looking to install perhaps tomorrow or friday: It looks like it should be a pretty straight forward operation to swap it, but figured id ask to see if anyone has any advice they want to lay down.
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ducinthebay
paso grand pooh-bah
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Joined: Sat Sep 03, 2005 12:00 am
model: 750 Sport
year: 1990
Location: SF Bay Area

Re: showa 900ss shock -

Post by ducinthebay »

Should fit right in. Since you cant use a track stand to support the bike, I have found that two jack stands under the back of the motor works pretty well. I just rock the bike over to one side to get the first one under, then rock the bike to get the next one under. Take off your rear wheel so that the swingarm moves freely when you are trying to get those big bolts through the shock eyes. There are little hat washers that go inside of the heim joint to reduce the size to the bolt, and takes the torque of the bolt. Make sure you have those. There are two on each shock eye.

Of course, you probably want to take off the tank and rear body section just to get some working room and not bang them up in the process. Also, when you get the old shock off, its a great opportunity to check your swingarm pivot for play or roughness. Since mine was modified, I don't know what the stock bearing set up is, but if you are obsessive, its a good opportunity to clean and regrease those bearings, but that requires pulling the swingarm pin and its a whole lot more work.(but you do have a 3 day weekend coming up).

The 900ss shock is just a touch longer, so it will set the back of the bike up a bit. I have found it to be a good thing. It speeds up the turn in and doesn't cost anything in stability.

Cheers,
Duc in the Bay
1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project)
1991 907 -mostly stock
2002 ST4s - Lots of mods.
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jcslocum
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Re: showa 900ss shock -

Post by jcslocum »

Can you measure the 900SS shock and the old once from the eye to eye center??
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jetboy
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Joined: Sat Nov 08, 2008 3:51 am
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year: 1990
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Re: showa 900ss shock -

Post by jetboy »

900ss is 33.5cm

ill measure the sport one once its out-
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jetboy
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Joined: Sat Nov 08, 2008 3:51 am
model: 750 Sport
year: 1990
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Re: showa 900ss shock -

Post by jetboy »

stock marzoochi one is 34.5cm!

its actually longer than the 900ss showa by 1cm. but its a good thing i swapped, the bushing at the base of the spring was cracked and broken -

i cant really feel a difference in height -
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jcslocum
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Re: showa 900ss shock -

Post by jcslocum »

That's confusing! You really don't want to have a shorter shock in there. Be careful unitl you get a good feeling for it.
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jetboy
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year: 1990
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Re: showa 900ss shock -

Post by jetboy »

yup. im going to try this one and see how it goes. its an ebay item so its possible it was not from a 900ss? it fits fine and clearance seems alright. i havn't road tested it yet - just went around the block a few times and i really could not tell the difference.
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jetboy
Posts: 86
Joined: Sat Nov 08, 2008 3:51 am
model: 750 Sport
year: 1990
Location: oakland, ca, usa

Re: showa 900ss shock -

Post by jetboy »

i checked at the local ducati place and they measured a showa ss shock for me and got the same result - 1cm shorter than what i had. BUT i rode it today and its WAY better even if its a bit shorter. i think if i go to the 17" wheel in the back it will even itself back out.
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