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RD400 Turns 50!

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#31
General Chatter / Re: Homemade Rust Chelation Fo...
Last post by soonerbillz - February 16, 2026, 09:05:51 AM
As far as wanting the most economical solution I find nothing beats Rust911 in the 1 gallon concentrated jug. It makes 16 gallons and at that dilution level it is as effective as Evaporust. At $80 for the gallon that breaks down to around $5 a gallon. For me it works to have plenty of solution in shop and not have to continually buy single gallon jugs of other brands.
 I think I shared this earlier in another thread.
#32
General Chatter / Re: Chance to pick up a Suzuki...
Last post by AAAltered - February 16, 2026, 09:00:22 AM
Quote from: RDnuTZ on February 14, 2026, 01:28:18 PMthat 1 has the extremely rare value adding Vise Grip shifter on it!

It that GP style?
#33
General Chatter / Restoring bikes or ourselves?
Last post by soonerbillz - February 16, 2026, 08:53:18 AM
Though likely an AI generated video it still is kinda interesting.

https://youtu.be/sxPm6Z4b7D0?si=_tEXHLdzaldlINkb
#34
Congratulations!
#35
Turning Wrenches / Re: Spiralock vs Standard
Last post by automan - February 16, 2026, 07:06:28 AM
Which engines have you played with?
I have some play time with Yam 100,sirio and a little $3000 50cc italian jewel Comer50!
#36
Turning Wrenches / Re: 76 front turn signal remai...
Last post by automan - February 16, 2026, 06:56:33 AM
Yes, that was a really dumb move(dark brown, brown, light brown)
Blue is same, dumb.

No tracers ????
#37
Very nice  :thumbs:
#38
Turning Wrenches / Re: 76 front turn signal remai...
Last post by 1976RD400C - February 16, 2026, 06:03:10 AM
If the dark brown wire from the front left turn signal got plugged into a regular-colored brown wire, then it would act like that.
#39
eBay/FB Marketplace/Craigslist watch / Re: YWB RZ350 in Phoenix $7250...
Last post by SoCal250 - February 16, 2026, 01:05:43 AM
Nice, Congrats! :clap: I think that was well bought.

Just think, for about the same money you could have had a non-running RZ previously owned by a Beastie Boy! :dawg:
#40
Turning Wrenches / Re: Most used gear oil and 2st...
Last post by sav0r (CL MotoTech) - February 16, 2026, 12:37:06 AM
For vintage motorcycles I don't think it matters much. The gearboxes are overbuilt and even in fairly extreme trim oil isn't the weak point for either engine or transmission performance.

For our race cars we've run some extremely exotic oils. Some worked and some didn't and I've seen a few transmissions bite it. I personally did one in for the tune $10k. Different problems can arise when you are doing dry sump and even dry sump transmissions. These aren't problems these old bikes have. Put oil in them and they are likely to work.