Marzocchi Fork Seal or Seals ?

Post your 'Chassis & Suspension' FAQs, comments & questions regarding Ducati motorcycles here.
MartinMille BANNED
BANNED
Posts: 817
Joined: Fri Sep 21, 2007 8:15 pm

Marzocchi Fork Seal or Seals ?

Post by MartinMille BANNED »

Hi All
I have notice in some description on overhauling front forks some use only one seal where other say to use two seal per leg !

What is the correct way one or two seals per leg ?

nottonight68
BLABBERMOUTH
Posts: 838
Joined: Tue Sep 09, 2008 1:15 am
Location: Adelaide S.A.

fork seals

Post by nottonight68 »

definetly 2 on ss

Rick F
Mach 3
Posts: 91
Joined: Mon Aug 07, 2006 6:35 pm
Location: Murwillumbah NSW AUstralia

seals

Post by Rick F »

always 2 from my memory

I have ceriani, but all the pics of marzocchi (?) all show 2 seals for ss, gt gts darmah etc

I have old parts books ;)

Rick

cafe*racer
SSD900 Darmah
Posts: 377
Joined: Tue Nov 16, 2004 1:49 am
Location: Castro Valley, CA

Post by cafe*racer »

Always two seals. One up, one down.

nottonight68
BLABBERMOUTH
Posts: 838
Joined: Tue Sep 09, 2008 1:15 am
Location: Adelaide S.A.

seals

Post by nottonight68 »

one up one down ? dont remember that but i think your correct. ill check marzoc drawings

MartinMille BANNED
BANNED
Posts: 817
Joined: Fri Sep 21, 2007 8:15 pm

Post by MartinMille BANNED »

Ok thanks guys , I just tripped a pair down and they only had one seal per leg , there was no leak but I changed them anyway will have to get another two seal now LOL

nottonight68
BLABBERMOUTH
Posts: 838
Joined: Tue Sep 09, 2008 1:15 am
Location: Adelaide S.A.

ssd project

Post by nottonight68 »

hows the project going?
im doin my 76 ss -ground up
post some pics -im always interested in resto methods and tricks
just got my frame back from painters -all threads full of paint and its hard,had to buy tap set to get bolts in.
had mine since new and it was complete but didnt realise how worn everything was.
had a $6000 budget but i think thats shot to pieces
CHEERS STEVE

Peter Mille
750 SS Greenframe - the holy grail
Posts: 500
Joined: Fri Aug 13, 2004 2:12 am
Location: The Netherlands, Europe.

Post by Peter Mille »

One or two seals per leg?
Depends on what make or brand seal you use, there are non-leaking seals that only require one seal, replacing the original two seals.....!!
More seals mean more stick-slip or whatever you call it, less seals mean better functioning forks, but again, there should be no leaks....

nottonight68
BLABBERMOUTH
Posts: 838
Joined: Tue Sep 09, 2008 1:15 am
Location: Adelaide S.A.

seals

Post by nottonight68 »

disagree there pete
top seal keeps road gunk out
bottom seal keeps oil in-bewdiful!

nottonight68
BLABBERMOUTH
Posts: 838
Joined: Tue Sep 09, 2008 1:15 am
Location: Adelaide S.A.

seals

Post by nottonight68 »

only jokin -4 seals needed to keep damian birch new fork boot rubbers clean :-D

Peter Mille
750 SS Greenframe - the holy grail
Posts: 500
Joined: Fri Aug 13, 2004 2:12 am
Location: The Netherlands, Europe.

Post by Peter Mille »

There should be a dust seal/cap to keep road grime away.
My new Mille came without it, because the factory ran out of them in 1984.... 1985 models had them fitted again...!
Anyway I used the no leak one seal for one season, but was not happy with them, too much stick slip, even more than that with two seals...
Now I have a M1R fork in my Mille, and have no idea how many seals are in it...never touched them so far!

nottonight68
BLABBERMOUTH
Posts: 838
Joined: Tue Sep 09, 2008 1:15 am
Location: Adelaide S.A.

fork seals

Post by nottonight68 »

am aboutvto rebuild my repainted marzocs -1 up 1 down - thiis is the question

User avatar
conti-mental
Mach 3
Posts: 84
Joined: Sun May 09, 2004 9:12 am
Location: Lancashire GB

Post by conti-mental »

Mine have always been 2-up each side - fitted upside down doesn't sound right to me :?

I just removed the originals from a set of Marzocchis from a '75 900ss, and they were definitely both in the same way up

Cheers,

Andy

User avatar
BevHevSteve
SITE OWNER
SITE OWNER
Posts: 2210
Joined: Wed Mar 10, 2004 8:53 pm
Location: Lafayette, California
Contact:

Post by BevHevSteve »

back several years ago, the original size seals were not available so the common thing to do was to put a seal with the correct OD and ID in there from a yamaha dirt bike, commonly available but 10.5mm tall. The originals are 7mm tall by the way. Anyways, I had a seal manuf make the correct size for me so for the past several years I have had these correct sized seals in stock, they fit both cerriani and marzocchi 38mm forks, 2 per leg, mounted the same way with the seal side UP. Of course you put on a wiper above that on the outside.
Last edited by BevHevSteve on Tue Sep 30, 2008 9:57 am, edited 2 times in total.
Image
Steve Allen (925)798-BEVL[2385] Ride'm, Don't Hide'm
Ducati/Euro Spares -> https://Store.BevelHeaven.com
Facebook > http://facebook.com/Bevel.Heaven
Twitter > http://www.Twitter.com/BevelHeaven

cafe*racer
SSD900 Darmah
Posts: 377
Joined: Tue Nov 16, 2004 1:49 am
Location: Castro Valley, CA

Post by cafe*racer »

I stand corrected -?-

Post Reply

Return to “Chassis & Suspension Shop”