Front fork seal and spacer part numbers

General discussion about Street two-stroke Suzuki motorcycles.

Moderators: oldjapanesebikes, H2RICK, diamondj, Suzsmokeyallan

User avatar
Suzsmokeyallan
Moto GP
Posts: 4326
Joined: Fri Oct 24, 2008 9:11 am
Location: Mostly Barbados, sometimes Florida and western Canada
Contact:

Re: Front fork seal and spacer part numbers

Post by Suzsmokeyallan »

I was hoping you would post up the pics, the seals are a tight fit and once installed cannot be removed without destroying them. So if you put them in already you will need another set of them too.
The spacer that goes under the seal has a lipped edge, make sure you install it with the lip around the outside edge of it facing up in the forks.
Two strokes, its just that simple.

69 Suz U70
69 Suz T500
72 Suz GT750 cafe
74 Suz TS250
74 Suz GTXVR project
75 Suz RE5
75 Suz GT750
76 Suz TS400
76 Suz GT750
81 Suz GSX1100
86 Suz RG500x2
88 Hon CR500
93 Hon CBR900RR
98 Suz GSF1200x3
15 Kaw Ninja H2
BlkY2k
On the street
Posts: 15
Joined: Mon Apr 11, 2011 6:16 pm
Location: Sagnasty, Mi and Glennie,Mi

Re: Front fork seal and spacer part numbers

Post by BlkY2k »

I didnt realize they were diff. sizes til I had the one installed and the snap ring wouldnt lock. I just got off the phone and I have another set of seals and spacers on order, they said first of next week. Live and Learn. Thanks for the help.
1972 GT550
User avatar
Blokhead
On the main road
Posts: 119
Joined: Sat Jul 31, 2010 5:53 am
Country: USA
Suzuki 2-Strokes: GT750
Location: Cleveland

Re: Front fork seal and spacer part numbers

Post by Blokhead »

Suzsmokeyallan,

A while back I picked up a '76 GT750 parts bike that still had both original tires on it. everything on it looks original, including all the rust. The forks were good so I put them on my '73 rider. Decided to rebuild them with new seals, progressive springs, and the fork lengthening mod. I bought the new seals that you can see on the right in the pic. The first old one I pulled out is about 3mm longer than the new one. While taking the other old one out it split in two. Now the old seal is exactly the same height as the new one. Is this original spacer the same as part no. 51168-30B00 that you have listed?

These forks were never taken apart, so I'm wondering if all the old seals are like this.


Image
'79 KZ650SR w/162hp Polaris XC700 Snowmobile Engine Dragbike
'73 GT750
'74 H2 750
'90 GSXR 1100
'75 H1 500
'76 KH400
'76 RD400
Minitrail 50
2 Trizingers
User avatar
RING_DING
To the on ramp
Posts: 447
Joined: Thu Apr 21, 2011 5:32 am
Country: USA
Suzuki 2-Strokes: 1974 GT750 B-4 (JDM), 1975 GT750M
Location: North Carolina

Re: Front fork seal and spacer part numbers

Post by RING_DING »

I have the seals and the spacers, and Progressive fork springs all ready to do my fork rebuild on the 1975 GT750M.
Couple of questions:
1. The seals have a thick side and a narrower side. Which side faces down?
2. Progressive say the fork springs can go in either way around. Any recommendations?
1973 Suzuki GT750K with Sidecar - Bonneville 2020
User avatar
Coyote
Moto GP
Posts: 3404
Joined: Tue Oct 21, 2008 2:41 pm
Country: USA
Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

Re: Front fork seal and spacer part numbers

Post by Coyote »

See this link for fork seal direction.

viewtopic.php?f=2&t=6259" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
I was born with nothing and still have most of it left.

.
1978 GS1000C
1976 GT550 ongoing money pit.
User avatar
RING_DING
To the on ramp
Posts: 447
Joined: Thu Apr 21, 2011 5:32 am
Country: USA
Suzuki 2-Strokes: 1974 GT750 B-4 (JDM), 1975 GT750M
Location: North Carolina

Re: Front fork seal and spacer part numbers

Post by RING_DING »

Allan, the spacers I got are slightly rounded one side and flat the other side, but no "lip" that I can see. Looking at the edge of the spacer, the top half appears smother than the bottom. Is the top half the "lip" you are referring to?
Spacer.tiff
In this pic, can you confirm that I have the seal and spacer the right way round to install (right side facing down in the fork)
photo-22.JPG
You do not have the required permissions to view the files attached to this post.
Last edited by RING_DING on Sun Apr 08, 2012 9:35 am, edited 1 time in total.
1973 Suzuki GT750K with Sidecar - Bonneville 2020
User avatar
RING_DING
To the on ramp
Posts: 447
Joined: Thu Apr 21, 2011 5:32 am
Country: USA
Suzuki 2-Strokes: 1974 GT750 B-4 (JDM), 1975 GT750M
Location: North Carolina

Re: Front fork seal and spacer part numbers

Post by RING_DING »

Coyote, thanks for the link to your post. Intuitively I thought the bevel edge would face down so glad I asked!
1973 Suzuki GT750K with Sidecar - Bonneville 2020
Post Reply