1981 gs750 (gs750e) Retro Racer project

[LarsKroghStea]

Full by Lars Krogh-Stea, on Flickr

This bend and silencer came today. Almost a good match I'll have to use some force to get them to fit..

Inni by Lars Krogh-Stea, on Flickr

Mellomstykke by Lars Krogh-Stea, on Flickr


Extra by Lars Krogh-Stea, on Flickr

Have no idea what those two extra parts are.. Looks like a dbkiller but doesnt fit anywhere.. came with the silencer.

[LarsKroghStea]

Takk så mycket�� I'm going for a Cognito Moto wheel conversion for the gsxr front, so that will be a project for the winter. Dollar is expensive at the moment, and with postage and vat and everything that will amount to about 10.000,- Norwegian kroner. So I'll do everything else first.

Very nice fab work in this build! It's a great feeling passing the turning point when you start reassembling
What happened to the gsxr forks though? Going with the original forks instead?

Lykke til med prosjektet från Sverige

[LarsKroghStea]

And here it is with rubber booth installed.


Fork with booth by Lars Krogh-Stea, on Flickr

[LarsKroghStea]

Trying to get a little bit done each day.. today I dismantled the fork and painted them.

Fork by Lars Krogh-Stea, on Flickr

Fork by Lars Krogh-Stea, on Flickr

[LarsKroghStea]

The wheel is 4.25'. The rim is laced to an original 1979 gs1000/750 hub with 6mm shorter spokes. The tire is 150/70-18. The swing arm is the original. If I put the axle all the way towards the front of the adjustment range the tire is too close to the swing arm. It needs to be about two cm towards the rear, but that's normal anywhay, I think.

[steve murdoch]

Looks like at least a 3.5" rear wheel?
What swingarm is that?

[LarsKroghStea]

Thanks!

Here are some photos of my 520 conversion. The rear sprocket is for a Suzuki DR 750 and the front sprocket is for various 90's Kawasakis. The chain is a very narrow d.i.d chain.

Front first. The sprocket has a section which is 2.6mm wider as shown here:

IMG_20180809_171020 by Lars Krogh-Stea, on Flickr

On the inside of the sprocket I have 6mm spacer similar to the one you see between the sprocket and the nut. The reason I have a spacer on the outside is because I'm missing the retainer washer. It's in the mail.. When I had it mounted like this the chain was to close to the rear tire. I flipped the front sprocket and put two 1.3mm washers behind the rear sprocket. Now there is 7mm clearance between chain and tire. I believe that is enough. I will at least try it for a while. With this configuration I can also use the original rear sprocket bolts.

IMG_20180809_172232 by Lars Krogh-Stea, on Flickr



IMG_20180809_172737 by Lars Krogh-Stea, on Flickr


IMG_20180809_172701 by Lars Krogh-Stea, on Flickr

[storm 64]

Your motorcycle is looking great! Keep up the good work👍

[LarsKroghStea]

Finally passed the turning point, and the bike is getting together again

IMG_20180809_105244 by Lars Krogh-Stea, on Flickr

With the top breather cover off, the frame slid nicely over the engine.

IMG_20180809_110423 by Lars Krogh-Stea, on Flickr

After putting on the rear wheel and shocks it looks like half a bike already

IMG_20180809_150438 by Lars Krogh-Stea, on Flickr

Also refurbished some of the wires:

IMG_20180809_144438 by Lars Krogh-Stea, on Flickr

[LarsKroghStea]

Time for updates.. Got the engine together today. Was a bit of a hassle bechause previous owners had ruined the threads on almost half of the 20 bolts on the valve cover. That will be a task for later, to fix the threads and get a set of new suzuki bolts.

I ordered a set of oversize oil drain plug and tap, becuase there was no more threads left in the pan. This seems to be the story of the engine, there are broken threads everywhere. Two of the exhausts bolt threads are also gone. More people should learn to use a torque wrench.. :/

Here is the new fancy bolt:

Oil drain plug magnet by Lars Krogh-Stea, on Flickr

Oil drain plug by Lars Krogh-Stea, on Flickr

I sodablasted the whole engine and masked off the already painted covers before I sprayed the rest of the engine. I think the stainless hexbolt set look pretty good

Paint and stainless bolts by Lars Krogh-Stea, on Flickr

The gasket set was missing one, so I made it.. close enough

Homemade gasket by Lars Krogh-Stea, on Flickr

[LarsKroghStea]

Had a go with the sodablaster today. Impressed with how clean an dry the surface is afterwards. Washed the pan in diesel first then blasted it. Gave it a coat of BMW grey to finish it off.

With paint by Lars Krogh-Stea, on Flickr

With paint by Lars Krogh-Stea, on Flickr

With paint by Lars Krogh-Stea, on Flickr

Looks just like the Tazzios! Well done!

[LarsKroghStea]

You sir, definitely have some impressive fabrication skills.

Well thank you😊. Now I'm struggling to descide between powdercoating the rearsets black or leaving them as is.

[Sam 78 GS750]

You sir, definitely have some impressive fabrication skills.