Hi Folks!!..first off, I would like to thank the many knowledgeable people in this forum to help me make the swap to a 929 shock possible. I just want to share my experiences of the install on my 5th gen. and hopefully to add some additional info to those who may be considering the swap.
(1) I went with making my own upper shock mounting bracket instead of modify the stock one just in case I decided to switch back. Here’s the AutoCAD drawing of both brackets. I decided on making it 42mm above stock length (vefeers’ idea). This gives me approximately an additional 6mm overall shock assembly length above stock.
929_Shock_Mount_for _5th_Gen.jpg
(2) Ramax was the material used. It’s made by a Swedish company named Bohler-Uddeholm. It’s a pre-hardened chromium alloyed steel with good corrosion resistance and has excellent machinability.
(3) I used a M10 x 1.5 x100mm ISO 12.9 grade (equivalent to SAE grade 8) socket head bolt so I can countersink it into the bracket and secure with a set screw to stop it from turning during installation. I also used a grade 12.9 lock nut. Please note the above drawing shows a pitch of 1.0mm for the allen(socket) head bolt. In fact, I had to use one with a 1.5mm pitch. My local fastner supplier told me I had to order at least 25 of them to get it...to rich for my blood!.
Mount_1.jpg
(4) With the bracket installed, I could not fit the shock successfully through the swing arm. It was interfering with the exhaust pipes. I had to loosened the bolt so that the bracket would pivot…it did the trick. As a result, I had to turn the shock eye bolt around so that I can access and torque the nut to spec.
(5) There is definite interference between the reservoir and the bottom of the battery tray. There’s some flexibility in the tray and I think it’s only forcing the battery to sit a little higher than usual. During the install I had to force the bottom eye towards the shock link plates (triangular ones) by about an inch.
Install_1.jpg
(6) A scissors jack with a piece of wood under the rear sprocket was invaluable in aligning the shock linkage plate holes during install and removal/installation of the shock itself.
Thanks for the idea veefer!
(7) With the ride height increased, the rear wheel clears the garage floor by only an 1/8 of an inch when on its center stand. It would be interesting how close it would be with a new tire!.
(8) As a baseline, I set the pre-load to 7 out of 9 (with 9 being “hard”), compression at ¼ turn out from full in and rebound at ¾ turn out from full in. I got these settings from poster named Jester from another forum.
Good Luck to others and thanks again!!
BTW, I have 3 extra M10 x 1.5 x 100mm socket head bolts listed in the Pay It Forward section. I had to buy a minimum amount at the time to get them.