Search found 1112 matches

by Questo vecchio rz
Mon Feb 26, 2024 2:57 am
Forum: Bodywork
Topic: FYI Airtech is " out of Business"
Replies: 10
Views: 349

FYI Airtech is " out of Business"

That's a lot of people on this forum and the 500 have used Air tech body work for decades they are out of business and they are no longer taking orders for manufacture. This is kind of a big blow for vintage motorcycles as they are the only company in the world that makes such a vast array for so ma...
by Questo vecchio rz
Mon Feb 26, 2024 2:57 am
Forum: Bodywork
Topic: FYI Airtech is " out of Business"
Replies: 0
Views: 73

FYI Airtech is " out of Business"

That's a lot of people on this forum and the 500 have used Air tech body work for decades they are out of business and they are no longer taking orders for manufacture. This is kind of a big blow for vintage motorcycles as they are the only company in the world that makes such a vast array for so ma...
by Questo vecchio rz
Wed Aug 16, 2023 2:53 am
Forum: Engines
Topic: Any high mileage RZ’s out there ?
Replies: 7
Views: 636

Re: Any high mileage RZ’s out there ?

I e combined about 100,000 + miles on RZs. I've owned & ridden 3.and have a long term project #4. I've NEVER had in break, or stop running. Never a decrease in performance..theve been bullet proof...like Teflon reliable and durable. I honestly think ..few people abuse or ride a RZ as hard as I d...
by Questo vecchio rz
Fri Apr 28, 2023 1:18 pm
Forum: Engines
Topic: Piston meltdown... again
Replies: 23
Views: 1378

Re: Piston meltdown... again

The 2 layer gasket compromises the gasket sealing ability a lot... and 3 bond is a no no for head gaskets. You are much better off using the stock 3 layer head gasket and machine your head for required squish and volume accordingly.... Or just accept a slightly larger squish clearance and live with...
by Questo vecchio rz
Mon Sep 12, 2022 11:57 am
Forum: Engines
Topic: Expansion chambers
Replies: 14
Views: 2047

Re: Expansion chambers

Heya.. been there done that. Here's my recommendation. https://hvccycle.net/yamaha-rz350-performance-exhaust-rz350-exspansion-chambers-hvcpprz350/ HVC Pipes, these are Tommy Crawford designed pipes. His RD/RZ & Gamma pipes offered exceptional low-end Street characteristics while still allowing g...
by Questo vecchio rz
Thu Aug 11, 2022 2:38 pm
Forum: Yammer-Howling
Topic: SpecII
Replies: 1
Views: 319

Re: SpecII

I'm not sure, Hes been doing RDs since 76 and other bikes since the late 60s. If anyone deserved to retire it's Gary.
But these are also his life's passion
His contact info, has always been erratic
Good luck
by Questo vecchio rz
Fri May 27, 2022 3:46 am
Forum: Custom Projects/Restoration
Topic: RZ392R project
Replies: 4
Views: 885

Re: RZ392R project

I have a Banshee engine Note**( No YPVS) with the following : 1.) I forget, but approx 385 cc with 2nd overbore Weisco pistons. 2.) Typical Hot Rods + 4 mm crank 3.) Chariot Billet 1pc head.( Best head made) for stock & CPI cylinders IMO 4.) 21 cc domes 5.) Mild Dune/MX port 6.) Complete VForce ...
by Questo vecchio rz
Sat Apr 30, 2022 10:06 am
Forum: Engines
Topic: +10mm crank data
Replies: 13
Views: 1793

Re: +10mm crank data

Should be interesting w a YPVS system, can't say I've ever views one. As it's all been about Cheetah or Serval heads You can source new Banshee cases for about $6-$700.00. A Crankworks balanced billet 10mm crank for about $1500.00 With ported 10 mm Servals/Cheetahs easily putting out 80-100 h.p. Ver...
by Questo vecchio rz
Thu Apr 14, 2022 4:46 pm
Forum: Engines
Topic: RZ350 running to lean with new jet kit, stalls
Replies: 2
Views: 627

Re: RZ350 running to lean with new jet kit, stalls

Yep that jet kit should pretty much be "Johnny on the spot " , as you buy it off the shelf, and @2500' really should still be just fine.? Usual carb stuff, recheck everything, clean everything, wire out all ports/tubes. Float bowl height is also critical..double check it. Make sure your ( ...
by Questo vecchio rz
Mon Mar 07, 2022 11:49 pm
Forum: Chassis, Brakes & Suspension
Topic: Hard starting RZ350
Replies: 9
Views: 768

Re: Hard starting RZ350

If it ran great for a few months and then started running bad, I don't think it's your float bowls being reversed? But sometimes.. Ya Neva know. May as well check it. I'd give it a complete carb clean...every detail. And a fresh set of plugs. Then I'd check all the electrical system components for a...
by Questo vecchio rz
Sat Feb 26, 2022 6:55 am
Forum: Custom Projects/Restoration
Topic: RZ350 Super Motard
Replies: 1282
Views: 369067

Re: RZ350 Super Motard

Good to see.! That's going to be fun times I'm getting ready to buy a 13,000 watt gas /propane generator to power up my welders nothing fancy a old rusted used Hobart 140. And a Crude GF 170 220 mig for the heavy stuff ( My house) has a 50 amp panel..yep that's it, and Edison would have to step in a...
by Questo vecchio rz
Mon Feb 07, 2022 9:06 am
Forum: Engines
Topic: Porting and molds
Replies: 9
Views: 1392

Re: Porting and molds

That's a neat lil trick.. keep us posted on your progress.
by Questo vecchio rz
Mon Feb 07, 2022 9:02 am
Forum: Yammer-Howling
Topic: Warranty Returns / 1st Impressions / Bad Decisions
Replies: 7
Views: 699

Re: Warranty Returns / 1st Impressions / Bad Decisions

Pretty good score right there. Nice gloves. It's odd how tough gloves can be to fit well, it's one of those things it's really hard to buy online. I have to try on many pairs and while I don't consider myself extra large I'm 6 ft 195 lbs I find myself buying gloves that are 2- 3XL sometimes what you...
by Questo vecchio rz
Thu Jan 27, 2022 1:24 pm
Forum: Engines
Topic: +7mm Crank OEM Cylinder Porting
Replies: 56
Views: 7834

Re: +7mm Crank OEM Cylinder Porting

Just last year I stopped by his shop and discussed some RZ builds and I specifically asked about the 7 mm stroker with a YPVS head assembly, and he said he does not use them he uses the Athena heads which have no power valves.? He said the Athena too end head delivers more power, which it does....b...