Will a 3xw-abs take an ally swing arm?

[nurse]

Overhauling the rear end and fitting the rpm shock. I need to take out the rear swing arm to sort out some corrosion and allow me to repaint it easily. 

So I got to thinking whilst it is off why not replace with an ally rear from an earlier model as it will be lighter and polish up well, but I seem to remember readin somewhere that the abs shock is offset in the frame and swing arm to allow for space to house the abs pump (which is no longer insitu anyway!).

Is this right or am I making it up!!

Thanks in advance

[fj11.5]

Hmmmm id say it would bolt in ok but as for an offset , buggered if I know 

[Harvy]

Overhauling the rear end and fitting the rpm shock. I need to take out the rear swing arm to sort out some corrosion and allow me to repaint it easily. 

So I got to thinking whilst it is off why not replace with an ally rear from an earlier model as it will be lighter and polish up well, but I seem to remember readin somewhere that the abs shock is offset in the frame and swing arm to allow for space to house the abs pump (which is no longer insitu anyway!).

Is this right or am I making it up!!

Thanks in advance

I just took a look at the 2 swingarms i have sitting in the shed (steel '91 non-abs and aluminium '90). The linkage pivot points are identical. I have a feeling that it did not matter if you had an ABS model or not, the steel swingarms are the same? My '91 is non-ABS and the shock is offset. When I converted to the FZ1 swingarm, I had to make up for the offset by installing larger spacer on one side of the mounting point than the other for the pivot, and the swingarm pivot point was centered on the arm.

HTH
Harvy

[fj11.5]

Hey harvy
Did you do a right up when you fitted the fz1 arm,, I have one waiting to fit into effie , but I'm going to do it without changing shocks or linkages  ,, how did you make it fit in the frame

[nurse]

Overhauling the rear end and fitting the rpm shock. I need to take out the rear swing arm to sort out some corrosion and allow me to repaint it easily. 

So I got to thinking whilst it is off why not replace with an ally rear from an earlier model as it will be lighter and polish up well, but I seem to remember readin somewhere that the abs shock is offset in the frame and swing arm to allow for space to house the abs pump (which is no longer insitu anyway!).

Is this right or am I making it up!!

Thanks in advance

I just took a look at the 2 swingarms i have sitting in the shed (steel '91 non-abs and aluminium '90). The linkage pivot points are identical. I have a feeling that it did not matter if you had an ABS model or not, the steel swingarms are the same? My '91 is non-ABS and the shock is offset. When I converted to the FZ1 swingarm, I had to make up for the offset by installing larger spacer on one side of the mounting point than the other for the pivot, and the swingarm pivot point was centered on the arm.

HTH
Harvy

Cheers Harvy.   That's useful! Do you (or anyone else) know when the compatible years started from if 90 was the end of the aluminium swing arms?  I assume these years also ran with the 'dog bone' set up.

[fj11.5]

Id say the alloy stopped before 88 , as my 88 has the steel arm

[Harvy]

Hey harvy
Did you do a right up when you fitted the fz1 arm,, I have one waiting to fit into effie , but I'm going to do it without changing shocks or linkages  ,, how did you make it fit in the frame

Yes Rod, It was some years ago now and it may have been on the old Yahoo group site.

Basically, you need to press the bearings in 2mm either side and take 2mm off either side of the pivot area (measure it first just to make certain obviously) and use all the FJ components (centre spacer, outer dust caps, pivot bolt). Replace the rear brake light switch with a hydraulic banjo bolt switch. Use a Honda VF1000R '86 (from memory) 18 tooth front sprocket with the outer face machined off so that the c/s nut has some thread to mount too. A pair of Soupys adjustable dogbones. FZ1 wheel, brake mount and caliper and torque arm.
AS stated, mine is on a '91 and I had plenty of advise from Eric and Frank over the US. If you are doing your on pre-'88 (I think), Frank Moore is your man as you will need to convert to dogbone links.

HTH
Harvy

[Harvy]

Cheers Harvy.   That's useful! Do you (or anyone else) know when the compatible years started from if 90 was the end of the aluminium swing arms?  I assume these years also ran with the 'dog bone' set up.

My thoughts are that an aluminium arm from 88-90 should work on '91+. just not sure if '88 was the year that the change to dogbones occured.

Harvy

[fj11.5]

Thanks harvy,
You make it sound easy mate,  if I'm going to get it in before summer hits, I should get my arse into gear

Cheers
Rod

Oh, yeah its going into my 84/89 look alike

[jscgdunn]

Hmmmm id say it would bolt in ok but as for an offset , buggered if I know 

the relay arm is different and the shock clevis is wider on the 3xw

[RichBaker]

Id say the alloy stopped before 88 , as my 88 has the steel arm

Nope, my '90, and every 3rd Gen (US '89-'90) I've seen, has an Al arm....

[1tinindian]

I put a 89 AL swing arm in my 91.
Direct bolt in, non ABS 91.

Leon

[movenon]

I put a 89 AL swing arm in my 91.
Direct bolt in, non ABS 91.

Leon

And it was shinny.........
George

[aviationfred]

The 88'-90' aluminum swing arm should bolt up with no modifications. Something else to consider. The 91'-93' swing arm relay, P/N 3XW-2217A-00-00 is different than the 88'-90' swing arm relay. You should be able to use the 91'-93' swing arm relay and 88'-90' swing arm. The 91'-93' RPM shock has a wider lower clevis than the 88'-90' OEM shock lower clevis.

Fred

[nurse]

So the Clevis mount point is wider on the 93, therefore by using some spacer material between 88-90 mount and the 91-93 rear shock could work?

I may restore and refit the current swing arm for now and keep an eye out for a tidy 88-90 swing arm in the mean time!

I put a 89 AL swing arm in my 91.
Direct bolt in, non ABS 91.

Leon

Did you have any issues with mounting the swing arm relay?


Don't suppose anyone happens to know the weight difference between the steel 93 and the earlier ally version?