Progressive springs GS 1150 - installation help needed

[Anonymous]

I`ve just bought me a pair of Progressives front fork springs for my `85 GS 1150.
I need answers on a few questions before I can do the installation.

A note following the springs, told me to make a 2 inch spacer.
Does that mean, that I remove the original piston/spacer and make a new one of a pvc tube? I guess I then have to place a washer between the spring andt the spacer.

What kind of oil should I use for the fork and what is the correct oil level with the new springs?

Any other things I should be aware of?

Hope you can give me a few hints )

Regards!

Bjorn Arne Berg
Aurskog, Norway

[Robert Corrie]

Make a spacer from PVC. pull the stock spring, install the new spring, install a washer,install spacer,install another washer,install cap. Ride like crazy.

[Doze]

Fork oil capacity:
UK E models.......268cc (9.43 Imp fluid oz)
UK EF models......280cc (9.85 Imp fluid oz)
US models.........286cc (9.66 US fluid oz)
Fork oil level:
UK models..........190mm (7.48 in)
US models..........180mm (7.09in)
I believe oil levels are checked, springs out, forks compressed. Somebody correct me if I'm wrong.

Fork air pressure:
US models........4.3psi (0.3kg cm squared)
Doze.

[gspaul]

10w or 15w.

[Anonymous]

Thank you very much for your answers.
I have to bother you with even more questions

When it comes to the fork oil level. Should I use the standard 190 mm level or do as the Progressive Susp. installation note, where it says that if the standard level is more than 140 mm, you should use max 140 mm??

And finally: The 2 inch spacer - shoul I include the 2 washer`s (tob/bottom of spacer) in this measure??


Bjorn Arne

[IanFrancisco]

washers

I don't think the thickness of two washers will affect the outcome much. If you're concerned, making the spacer 1 7/8 inches will make the ride VERY slightly softer, making the spacer 2 inches will make the ride VERY slightly stiffer....

[Anonymous]

Thanks again!

But what do you think about the oil level?

Standard 190 mm or the 140 mm`s mentioned in the installation guide???
Saw in another note from Progressive Suspension that they recommended standard level.

I`still a little confused )

Bjorn

[Gerry]

When I put my springs in I used the factory suggested amount of oil. Mine is the Canadian speck and requires air in the forks even though they didn't recommend it I put the air in. This set up worked great and I ran the springs for 2 or 3 years until I put the gsxr forks on.