Author Topic: GSXR 750 Rear Shock Swap UPDATE  (Read 12384 times)

Offline interfuse

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GSXR 750 Rear Shock Swap UPDATE
« on: July 05, 2010, 04:19:53 PM »
I just picked up an nice low milage 1992 gsxr 750 shock. I found this description of the replacement and it sounds easy enough.

http://forums.banditalley.net/index.php?topic=1305.0

My question is, you can do this without removing anything but the old shock? The wheel and battery box and everything can stay on? Anything else I should look out for???

Thanks!
« Last Edit: July 17, 2010, 12:14:19 PM by interfuse »
Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.

Offline tomacGTi

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #1 on: July 06, 2010, 01:52:56 PM »
You can do everything with the rear tire, battery et all still installed, I'd recommend demounting the hugger at least to give you room. You'll probably have to remove the RH footpeg assembly as well to ensure you can reach the hardware to pull it out. Fishing the reservoir through may prove to be the most challenging.

I would recommend you have a Dremel handy to grind down the cushion lever if you plan on leaving everything on the bike. You'll need to doctor the top mount as well as the lower clevis. A file will work but is a bit more tedious, you'll see what I mean once you get in there.

Just make sure the shock is "good". I know when I did the 1100 shock that the nitrogen charge was nil. Would suck to go through all the work to find out you've put in another pogo stick. Only one way to find out though..


Offline interfuse

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #2 on: July 06, 2010, 04:36:52 PM »
Many thanks for the tips! Exactly the type of info I needed.

Not exactly sure what you mean by needing to file it down, but I'll keep the dremel handy when doing the swap.

I'm keeping my fingers crossed that the gas is good. Did you get the gas refilled? Can you get it refilled while on the bike?
Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.

Offline tomacGTi

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #3 on: July 06, 2010, 05:32:08 PM »
From the top of my head from when I did mine oh so long ago

-The top half of the shock needs to be rounded to fit into the B4 mount.

-The clevis needs an angle to be ground a slight bit to accommodate the cushion lever

-The cushion lever needs to be clearanced to accommodate the lower spring perch.

As far as gas charging goes, I was able to find some nitrogen cartridges and do a sort of ghetto DIY. It would still bleed out and make the shock soft again which is why I went with the newer GSXR rear.

Even the newer GSXR rear isn't without fault though, it does fade when it gets overheated (on track) and can lead to a bouncy rear end. I may get another one just to have it rebuilt or wait till season's end to have the existing one rebuilt with better fluid.

Offline interfuse

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #4 on: July 07, 2010, 07:53:58 PM »
Here's the new shock... the remote reservoir is always a different temp then the rest of the shock so I'm hoping it's holding a charge.

Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.

Offline gsxr750racer7

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #5 on: July 07, 2010, 08:44:47 PM »
Hi Mike
If  the shock is no good  . have about  3 or 4  92/94 gsxr 750, or one gsf 400 shock you can have.
John.
Bolton, Ontario.

Offline tomacGTi

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #6 on: July 07, 2010, 10:20:12 PM »
Mike,

That one is different from the 1100 rear shock I installed back in the day, you should have fewer problems shoeing that one in.

Only time will tell!

Offline interfuse

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #7 on: July 08, 2010, 11:06:33 AM »
I'll keep you posted on how the swap goes. John, if the shock is stuffed I'll get in contact with you. Any good roads in the bolton area?
Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.

Offline waruta

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #8 on: July 09, 2010, 10:24:41 PM »
Apologies for jumping in, but I'm trying to find a GSXR rear shock that will fit a 1992 250, I'm probably going to swap out the entire rear end with a RGV 250 Banana arm, will the GSXR shock still fit?  Would you be willing to send a shock to Japan?  (I know, there should be tons of shocks here, but usually you only find the Ohlins/Penske high-end ones in auctions here...)

Regards,

Wouter

Offline interfuse

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Re: GSXR 750 Rear Shock Swap Question.
« Reply #9 on: July 10, 2010, 02:19:00 PM »


Here's a comparison of the new and old shock. Pretty close to the exact same length (if not exact). The shock was completely bolt in. No fuss. I haven't taken it for a real spin yet, but much less sag when I sit on it. I'm going to get someone good at suspension to help me dial it in.
Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.

Offline interfuse

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Re: GSXR 750 Rear Shock Swap UPDATE
« Reply #10 on: July 17, 2010, 12:12:54 PM »
Success. Soooooooo much better then the old bandit 400 shock. No more rocking back and forth as you get on and off the gas. I find it a little to stiff, but I haven't had a chance to play with any of the settings.

I just found a 94 gsxr 750 front end and I'm looking forward to getting that installed. After that, maybe gsxr swing arm and rear rim (more rear tire options), then I'm done with this bike (lol, it only took 10 years and 10g's).


Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.

Offline interfuse

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Re: GSXR 750 Rear Shock Swap UPDATE
« Reply #11 on: July 18, 2010, 10:18:59 AM »
Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.

Offline crashoverrideplik

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Re: GSXR 750 Rear Shock Swap UPDATE
« Reply #12 on: July 19, 2010, 09:30:14 PM »
I did mine with the 1100 shock. I set the collar to number 5 for spring load, 5 on the rebound and number 4 on the compression. It's firm but not harsh. I'm gonna go fine tune it on some twistys tonight. I found after doing the swap that the forks really suck. Swapping the fork weight to 15 (instead of 10 wt) helps greatly.

Offline Tainted-Meat

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Re: GSXR 750 Rear Shock Swap UPDATE
« Reply #13 on: July 25, 2010, 09:22:46 AM »
forks suck with standard ... when giving these little beast a firmer back end it's bound to show through some more!
People are more violently opposed to fur than leather because it's safer to harass rich women than motorcycle gangs.

Offline ovlovder

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Re: GSXR 750 Rear Shock Swap UPDATE
« Reply #14 on: August 28, 2010, 11:10:47 PM »
I just mounted an 06 gsxr shock, only a touch longer than stock, had to grind the rocker a bit for clearance for the larger spring, also relocation of the stock overflow is necessary (mine already was), I may lengthen the dogbones a bit to tweek ride height, will report back when the bike is back together and on the road.