550/650 Swap Questions

[109Countries]

I have decided which way I want to take the 1980 550L cafe racer project.
I purchased a used 650GL motor for $100. Apparently this is a 34 tooth instead of a 30 tooth sprocket, so I purchased the cam shafts from the E series.
I purchased a new head gasket and base gasket.
I have been reading all that I can on this build, however I do not understand some of the terminology that you are using. Such as the baskets, bucket, and barrels.
It would be nice to switch to a digital gauge, which ones have you guys found to work well? I was thinking one with the tach, fuel gauge, warning lights and maybe find one that has the 6 gears? I am sure someone makes it.
I was looking at degreeing the camshafts to squeeze the most HP out of the build. Is there a more comprehensive build guide than this? https://www.thegsresources.com/_for...egreeing-Camshafts-Information-Required/page9 Is it a necessary modification? I have never been this in-depth inside of an engine before, but I am rather excited.
I was planning on using the 550 carbs and camshaft, unless the 650 is better? What size jets would you recommend to start? I want to put on pods and an aftermarket muffler. Everywhere that has the dynojet stage 3 kit has been sold out. If I could find the jet size of that kit, it should be cheaper to go that route.
Is there anything else that I will be needing for the swap? Will the coils from the 550 work? What about points? Would switching to a better set of points increase any power output?
I would like to put the aluminum swing arm from the 1100 on the bike to get rid of the center stand and the steel swing arm for weight reduction. Would any swing arm from the 1100 work? Here's what I found: https://www.Eblag.com/itm/82-Suzuki-GS-1100-GS1100-Swing-Arm-53D/133541708007?hash=item1f17b4c0e7:g:ZR8AAOSwO6xeYGlB or does it have to be off of the e model? They appear to be different. https://www.Eblag.com/itm/1982-1983-SUZUKI-GS1100E-Swing-Arm-Fork-Aluminum-Allot-Used-GS-1100-E-OEM-ES-82/293776629702?hash=item4466739fc6:gvUAAOSwfNRfgnPi

 

[Rich82GS750TZ]

Maybe I'm pointing out the obvious and you've already worked this out. If so, sorry.

the 550 is a chain drive bike, right?
the 650GL is definitely a shaft drive motor.

Of the ebay links you posted. the first is a shaft/swingarm. The second is for a chain-drive bike.

Am I missing something?

 

[109Countries]

Yes, you take the top end of the 650 and mate it with the 550 lower. It will stay chain driven. I was looking for the chain driven 1150 swing arm.

 

[Rich82GS750TZ]

Ah. Thanks. Looking forward to seeing this.

 

[Guest]

Hey Karl? Ben off the Facebook group here. Check out my blog again, there are four blog posts now on the start to finish for my 673 conversion.

To keep it simple here, I used the cams out of the 650 engine, with the 550 sprockets (milled out to 7mm and slotted). The barrels/cylinders/jugs were decked because of corrosion. The cylinder head was machined because of pre-ignition damage around the outer face near the fire rings of the head gasket. I was initially concerned that the clearance between piston and head might be too close, but the guy who did the work assured me it would be fine. It was.

I changed the points system to Dyna S only because I struggled to find decent Kokusan condensers. Every time I changed them for NOS versions, I would still get sparking across the points. The Dyna system is brilliant.

The carbs were off the 550 but rejetted to 650 spec as per the Suzuki manual. I'm still using the original airbag and pipes.

In terms of performance, the difference is night and day. So much so that the old clutch, with heavy-duty springs, will not put up with it. The torque from this thing is incredible now. I've just put a new clutch pack in tonight but can't road test for a couple more nights, it will be interesting.

Here's the first post, just keep following through to read them all. https://biketech7.blogspot.com/2020/06/suzuki-gs550e-673-conversion.html