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72 r5 part 2

chuck hahn

chuck hahn

Forum LongTimer
Past Site Supporter
So i sold the first R5 a few years ago and then found DS7 which i sold to same gy that boght the R5 for parts. Fast forward to lasy sunday. Found another R5 for 200 bucks. Has the vintage Twelfth Dimensions natwing fairin and matching bags which will go away.

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I intend on actually reviving this one. It sat in a shed for at least 25 years as far as anyone can remember. Engines stuck so depending on how badly (or if ) the liners are rusted where the rings contact them the plan is to have ot bored and go with oversize pistons and rings. Max allowable rebore is over which is 1 MM.
 
I'm jealous. A bike like that, for $200, would get me back on the restoration bandwagon.
 
first oreder of business is to soak the cylinders and get the engine unstuck so i can inspect the sleeves and determine a course of action. Everything else is of no issue as far as being catastrophic.
 
Crank seals are likely bad. I'd split the cases straight away.
 
Rob S. said:
How does the R5 differ from an RD350?
Click to expand...

R5 is the RD's daddy. It's a piston port induction engine, whereas the RD uses reed valves.

More obvious, the R5 has a drum brake. It's an older design.
 
$200..wow..what a rippin' deal, even if you have to get into the engine. The rest of it looks good, all the parts are there, even the stock exhaust. Good on ya, Chuck. ;)
 
Rob S. said:
How does the R5 differ from an RD350?
Click to expand...

The RD350 was a 6 speed vs 5 speed. I had an RD back in the day. One of the most fun bikes I've owned. Good project Chuck. A buddy here also has a real nice R5.
 
Sweet! I've been working on a R5 cafe bike for a while. I need to find an exhaust system. If you have any leads on stock pipes or some gently used expansion chambers please let me know. The stock exhaust on E-bay is all junk and the brand new expansion chambers are bonkers expensive!
 

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NCGS said:
Sweet! I've been working on a R5 cafe bike for a while. I need to find an exhaust system. If you have any leads on stock pipes or some gently used expansion chambers please let me know. The stock exhaust on E-bay is all junk and the brand new expansion chambers are bonkers expensive!
Click to expand...

Sorry cannot help on stock pipes. May want to consider searching Japanese proxy eBay sites?

Looking forward to seeing Chuck's R5 project/progress!

PS: I am partial to 70 R5 Purple & White paint job. I buy one again just to hear the R5 Ring-ding-ding exhaust note.
 
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Its gonna be quite the while till i get to that. After i finish these two bike i have in the shop now i have a nighthawk and a vulcan in the rotation. THEN the plan is to figure why the free Valkyrie doesnt have spark and get that ne fied up. Im up to my eyebrows in work right now. And yes the valk will be a for sale bike.
 
chuck hahn said:
Its gonna be quite the while till i get to that. After i finish these two bike i have in the shop now i have a nighthawk and a vulcan in the rotation. THEN the plan is to figure why the free Valkyrie doesnt have spark and get that ne fied up. Im up to my eyebrows in work right now. And yes the valk will be a for sale bike.
Click to expand...

Just keep the priorities straight! :)

(For the record, Chuck's doing some work on my 1000S. So let's not distract him, ok?? :) )
 
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