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Old 09-29-2009, 06:50 AM   #1
gs450racer
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Default 82' GS450 motor swaps

i have a vintage very nice gs450TXZ with body converted to gs450ls track parts with the racing strips. and lots of bolt ons and modifictions with rims and tires, gearing carb work, exhaust. yada yada. i want to know if a gs500 of the 80's will fit this fram with lillte modification. has it been done what do i need to complete. also other motors. maybe newer liqued cooled something. maybe an 80's gs750 motor. ideas/experiance welcome. like to keep it suzuki/kawazaki motors.


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Old 09-29-2009, 08:12 AM   #2
Kenneth_Moore
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Left-click and hold, then drag your cursor across the donor bike's engine. While it's highlighted, right-click and choose Cut. On the GS450, left-click and drag the cursor across the engine to highlight it. Then place the cursor over the highlighted area, right-click, and choose Paste. The new engine will be installed.
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Old 09-29-2009, 09:06 AM   #3
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Quote:
Originally Posted by Kenneth_Moore View Post
Left-click and hold, then drag your cursor across the donor bike's engine. While it's highlighted, right-click and choose Cut. On the GS450, left-click and drag the cursor across the engine to highlight it. Then place the cursor over the highlighted area, right-click, and choose Paste. The new engine will be installed.
.......you may or may not have the scale the image of the new engine to make it fit in the space of the old one.........
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Old 09-29-2009, 09:39 AM   #4
seruzawa
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You need to look at the two engines and measure the motor mounts. If they match then you're golden. If not then you are looking at some serious mod time. The larger engine has to be set in the frame so sprockets line up. In that case the engine will be off center with more weight on the opposite side from the sprockets. Or you could center the new engine, weld in new motor mounts, make a new swingarm and custom make some parts to extend the rear sprocket out to line up with the countershaft. Don't forget that the electrical systems are different so you will need wiring diagrams. These things are always a lot of work. Just be prepared to be at it a long time.

I managed to stick an old Honda 90 pushrod engine in a step-through 50 frame once. It did okay but was hard on the chain since the countershaft sprocket stuck out about an inch outboard of the rear. Was worth it for the extra 1.5 hp though.
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Old 09-29-2009, 10:01 AM   #5
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Any motor can be swapped with the right engineering. It's a matter of materials, placement and time. If you have materials, can measure and have plenty of time then you're on your way.
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