1975 Yamaha RD350(LC) Preservation-mod Hellride

canyoncarver

'hacking is learning'
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I promised to have this thing running by the end of 2021. So, with it being New Years Eve I had to hit the kick start. I have done zero tuning on the carbs. They are as you get them from Mikuni. No idle adjustment. No plumbing on the cooling system, so I don't want to run it very long or very often. Just a quick hitter to make the new year.


I LOVE first start videos. Nice work man.
 

irk miller

You've been mostly-dead all day.
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I’ve been spending a lot of time behind the counter at my local auto parts store looking at hoses to figure out the best combo. Here’s where I’ve landed so far:
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I’m going to replace the plastic elbow with a section of hose that makes that angle, otherwise this is about as clean as I’ve been able to get. The RamAir sock came in too. Not sure this is something you couldn’t make myself with sheets of foam from Uni.
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teazer

Over 10,000 Posts
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Couple of thoughts. I usually cut that lower hose connector off LC radiators and re-weld it pointing down at about 45 degrees. It makes for a shorter, simpler hose run. I have done that to a few to fit that radiator on a TZ motor/pump.

For the hose that sticks straight out, is it possible to use the 90 degree angle at the outlet and then take that hose straight up and under the right side reed box?

Or how about fitting a Banshee right side cover? It would need a small amount of welding and machining to the right side of the crankcase to take the waterpump shaft and for the feed tube, but that can wait until the next time the motor is out.
 

teazer

Over 10,000 Posts
DTT BOTM WINNER
Getting better all the time.

BYW, which direction does that pump pump ie which is the outlet and which side is the inlet? The reason I ask is that on a mechanical TZ pump, the equivalent of the pipe coming out of that side cover would be the inlet. I'm sure you already checked but I was looking at a TZ pump and had to ask.
 

irk miller

You've been mostly-dead all day.
DTT BOTM WINNER
Getting better all the time.

BYW, which direction does that pump pump ie which is the outlet and which side is the inlet? The reason I ask is that on a mechanical TZ pump, the equivalent of the pipe coming out of that side cover would be the inlet. I'm sure you already checked but I was looking at a TZ pump and had to ask.
This pump is the same direction. The pipe coming from the back of the head goes to the inlet on the pump. The outlet to the bottom of the rad, then the cooled water to the top of the head. You have to really zoom in on the diagram to see the arrows, but they show the pump with the inlet facing vertical and the outlet horizental.

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irk miller

You've been mostly-dead all day.
DTT BOTM WINNER
Going with a Trail Tech. Cool thing about it is the thermostat threads into the LC head.

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