« previous next »
Pages: [1]   Go Down

Author Topic: How much fork oil for '84 GPZ 750?  (Read 5266 times)

0 Members and 1 Guest are viewing this topic.

Offline 750cafe

  • Hot Shot
  • ***
  • Posts: 607
How much fork oil for '84 GPZ 750?
« on: October 17, 2014, 08:18:51 PM »
I will probably have much better luck here than on the Kwacker forum as they don't change their fork oil.

So, how many ounces or milliliters of oil to fill a cleaned and rebuilt fork on these?

TIA,

Eric
Logged
Is there anything more fun than riding? They are between your legs and are quiet when you turn them off.

Offline calj737

  • Really Old Timer ...
  • *******
  • Posts: 21,069
  • I refuse...
Re: How much fork oil for '84 GPZ 750?
« Reply #1 on: October 18, 2014, 05:03:05 AM »
Logged
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline 750cafe

  • Hot Shot
  • ***
  • Posts: 607
Re: How much fork oil for '84 GPZ 750?
« Reply #2 on: October 18, 2014, 09:48:23 AM »
Thanks for that reply but it refers to the larger 1100 forks.
That is the site that I found a reference to the GPZ forks that said either 250 or 270ml.
I am just trying to get an accurate number for these. (they are going on one of my Suzuki projects.)

Eric
Logged
Is there anything more fun than riding? They are between your legs and are quiet when you turn them off.

Offline calj737

  • Really Old Timer ...
  • *******
  • Posts: 21,069
  • I refuse...
Re: How much fork oil for '84 GPZ 750?
« Reply #3 on: October 18, 2014, 11:07:48 AM »
Yes it does, but reply #4 confirms they share the volumes. That's why I sent it.
Logged
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline 750cafe

  • Hot Shot
  • ***
  • Posts: 607
Re: How much fork oil for '84 GPZ 750?
« Reply #4 on: October 18, 2014, 07:01:39 PM »
Hmmm. From that very forum, I have seen 250 or 270ml's posted as the correct amount.
Thanks for trying.
Perhaps I will just fill one up to the air cross over hole, measure the depth down AND pour the fluid amount into a beaker and see if it comes close to any of those figures.
The crap that came out resembled old gear oil, water and fork oil. YUCK!

Eric
Logged
Is there anything more fun than riding? They are between your legs and are quiet when you turn them off.

Offline grcamna2

  • Not a
  • Really Old Timer ...
  • *******
  • Posts: 15,203
  • I love to restore & travel. Keep'em Going Strong !
Re: How much fork oil for '84 GPZ 750?
« Reply #5 on: October 18, 2014, 07:44:33 PM »
Nothing like fresh,clean forks & hydraulic fluid to keep'em working well over those hard bumps and road irregularities  :)
Logged
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline 750cafe

  • Hot Shot
  • ***
  • Posts: 607
Re: How much fork oil for '84 GPZ 750?
« Reply #6 on: October 18, 2014, 08:42:25 PM »
A gentleman on one of the Kwacker forums replied and concurs with a 318cc fluid amount. I will just go with 320cc's and call it good.
Thanks for the help!

I am busy rebuilding the anti-dive currently on these. And the tubes are busy soaking in solvent.



Eric
Logged
Is there anything more fun than riding? They are between your legs and are quiet when you turn them off.

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 15,634
  • Bike almost back to the 70's 2015
Re: How much fork oil for '84 GPZ 750?
« Reply #7 on: October 23, 2014, 07:50:32 AM »
A general way of correct amount of oil is to measure the level. No springs or caps, fork completely collapsed, min 140mm from upper side of fork tube to oil level. This is described for progressive fork springs. I used a syringe with hose that measured 140mm from bottom. Fill forks with oil and suck with syringe. Exact 140mm guaranteed!
« Last Edit: October 23, 2014, 07:52:03 AM by PeWe »
Logged
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline 750cafe

  • Hot Shot
  • ***
  • Posts: 607
Re: How much fork oil for '84 GPZ 750?
« Reply #8 on: October 23, 2014, 08:12:27 PM »
They are already back together and ready to go...



I don't waste valuable riding time fixing parts.  ;)

Eric
Logged
Is there anything more fun than riding? They are between your legs and are quiet when you turn them off.

Offline calj737

  • Really Old Timer ...
  • *******
  • Posts: 21,069
  • I refuse...
Re: How much fork oil for '84 GPZ 750?
« Reply #9 on: October 24, 2014, 04:22:44 AM »
Quote from: 750cafe on October 23, 2014, 08:12:27 PM
I don't waste valuable riding time fixing parts.  ;

Words to live by!
Logged
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline 750cafe

  • Hot Shot
  • ***
  • Posts: 607
Re: How much fork oil for '84 GPZ 750?
« Reply #10 on: October 24, 2014, 08:20:26 AM »
This is the pile as I bought a couple of weeks ago...




Hoping to have it on the road by the end of the month if I can find the good wiring harness that I have around here somewhere.

Eric
Logged
Is there anything more fun than riding? They are between your legs and are quiet when you turn them off.
Pages: [1]   Go Up
« previous next »