Posts by tag: TZ750

Sport Bikes For Sale May 23, 2012 posted by

Track Day Bravery: 1977 Yamaha TZ750 OW31

For Sale: 1977 Yamaha TZ750D OW31

I seem to be in a race bike mood these days. Maybe because the start of Summer is upon us, and I for one am looking forward to spending some of those sunny days at the track. Mind you my idea of a track day is on something a little more managable than this fire-breathing historic rocket ship, but for those of you with the skills, the next level of race track experience is beckoning.

This bike might look familiar to regular readers of RSBFS. You might recall this TZ500 in similar livery and listed by the same seller posted back in March (and still for sale at a pretty good reduction in price). Well today's TZ750 looks every bit as clean and cared for as the previous bike. Check out some of these pictures and see for yourself!

From the seller:
1977 YAMAHA TZ750 D MODEL OW31. THIS BIKE HAS HAD ONLY ONE OWNER SINCE 4/1978. IT USES A STOCK FRAME AND SWING ARM. IT DOES HAVE SOME PERIOD CORRECT MODIFICATIONS WHICH INCLUDE TOOMEY PIPES.36MM ELECTRON POWER JET CARBS,BOYSEN REED VALVES,LOCKHEED GRAND PRIX FRONT CALIPERS WITH DRILLED/SLOTTED ROTORS. ADDITIONALLY IT CURRENTLY HAS A 16 INCH DIAMETER FRONT RIM FOR FASTER TURN IN ON THE HIGH BANKS OF DAYTONA AND OTHER TRACKS.

THE BIKE HAS FACTORY PERIOD CORRECT REPLACEMENT CASES WITH 500 MILES ON REBUILD NO WELDING OR CRACKS

IT HAS BEEN ACTIVELY CAMPAIGNED BACK IN THE DAY AT DAYTONA, GROTTEN, BLACKHAWK, ROAD AMERICA, WENTZVILLE, MID OHIO, POCONO, LAUDON, LAGUNA SECA, ASPEN, LAJUNTA, HALLET, TEXAS WORLD SPEEDWAY, BRAINERD AND WAS WERA NATL CHAMPION IN 1980

THIS WOULD BE A GREAT BIKE TO ADD TO YOUR STABLE FOR RACE OR DISPLAY

These two-stroke GP bikes really represented the pinnacle of motorcycle road racing through the 1970s and 1980s, and finding a clean and loved racer from that era is becoming more and more difficult. What you see here is an opportunity that does not come through these pages often. If you have the space to display it or the, er, cajones to ride it - and you have the cash - then this is a "what are you waiting for?" kind of moment. For me, it is an opportunity to look, appreciate and drool just a little.

If I understand these two stroke engines correctly, the picture above is where the birds and other small mammals get sucked in by the 10,000 RPM whoosh of the intake. The picture below clearly shows where they come back out, but how do you determine which pipe they shoot out of?

All kidding aside, this is a beautifully preserved piece of racing history that can still be used and enjoyed (if that is the right term to use for riding it). This auction is on right now, and the BIN price is a lofty $49,999 or best offer. That is not a ton of money to pay for a bike of this quality, but it is certainly in rarefied air. Click on the link to check out all of the details, and then be sure and check back and share your thoughts. Do you want it, would you store it or would you ride it? Good Luck!

MI

Track Bikes For Sale April 9, 2012 posted by

Wow! Restored 1975 Yamaha TZ750

Wow!  Restored  1975 Yamaha TZ750

What else can you say but "Wow!"?  This bike simply speaks for itself and has some nice race history to add to its' allure.  With that in mind and the sellers good write up, I'm going to take a back seat and  let the seller and the pictures do the talking on this one.

From the auction:

This Historic TZ750 was built/modified as you see it back in the mid 1970's to be a top contender at Daytona, and was raced successfully in the 1976 & 1977 Daytona 200 by Cory Ruppelt. He finished in the money on this bike in 1976 being one of the few monoshocker 750's entered; only Factory works OW's and few privately modified bikes were monoshock equipped, as the Production 750's were only offered as twin-shock until 1977. Cory was one of the top pro-class privateers, with 5 Daytona 200's to his name, with a top finish of 14th in 1979.

 

 

C&J built 4 frames for Erv Kanemoto in the 70's; this is the 5th of 5 total TZ750 C&J road race frames constructed. C&J was one of the most highly regarded race winning builders, known for quality engineering and construction. Except for the Marvic magnesium wheels with Lockheed calipers, the Vesco fairing, and period USA Mack silencer chambers (still considered excellent upgrades), the rest of the bike is basically a 1975 TZ750B. The motor and monoshock service is recent, and the race compound Dunlops and RK racing chain are new; the Marvics were crack tested and refinished in 2010. The rest of this Kenny Roberts Replica including paint is "as-raced circa 1978" and still in exceptional condition for being 34 years old.As built by Ruppelt to his personal standards, this was one of the most competitive TZ750's of the era. This unique machine was raced until 1979, then hidden away in a private collection until being resurrected in 2009.

 

The engine cases are clean, with no cracks, repairs or damage from mechanical failure; race wear is present. The motor has approximately 100 miles since a full rebuild; the original chrome cylinders are still very nice! The frame has no cracks or repairs, and has the original finish. This is one of the best handling TZ750's outside of modern re-frames, and is a stable solid ride that could be put into "race ready" condition with a basic prep as it has been stored 3 years. The stock front master cylinder in need of a re-sleeve will be supplied at acquisition. Neither the frame nor engine have numbers.

You'll have to bring a little coin with you if are itchin for this piece of  TZ750 history.  Starting bid is a cool $32,500.  I don't claim to have my hand on the pulse of race bike sale prices but I'm going to guess this auction might have some legs. The TZ750 may be the most collectible of the TZ series.  All I know for sure is a 750cc two stroke scares me!

 

Tame the beast here.

 

Ian

 

Sport Bikes For Sale November 21, 2011 posted by

Yamaha’s Legendary TZ: 1975 Yamaha TZ750

Yamaha's Legendary TZ:  1975 Yamaha TZ750

I think you can argue the TZ750 is one of Yamaha's most iconic race bikes.  It takes you back in time to when bikes could truly be nasty beasts.  I think it is also a time when tire and chassis technology hadn't quite caught up with engine performance.   I've posted this info before but it is worth a second look if you haven't seen it before.  It is from a little comparison on Superbikeplanet.com:

Compare: 
the 1974 TZ700 and the 2000 R7 Superbike

TZ700 R7
Wheelbase 56.28" 56" 
Weight 345 lbs 356 lbs 
Front Tire  3.25 x 18 3.5 x 17
Rear Tire 3.5 x 18 6 x 17
Horsepower 145 173

How about the rear tire size!

Here is the auction info:

Here we have for sale a very rare 1975 Yamaha TZ 750 GP road race bike. This bike is in fantastic running condition. Yes, this TZ runs like you would not believe!! The 4 cylinder 750cc two stroke engine is all rebuilt and had virtually no time on it after a proper break in. The transmission and the chassis were rebuilt too but never raced after the rebuild. The bike runs perfectly down the street. The fairings are 1976 TZ 750 and same with the exhaust pipes. The bike also has the rare magnesium racing wheels on it. I have the new never mounted spoke wheels too. The bike is painted pearl white with red. The gauges are all in perfect working order. The rear shocks were cantilevered to improve the rear shock feel and performance. The bike has all original parts on it. This bike won mutiple races at Daytona back in its hay day. I have all of the documentation with this bike with all of its racing provenance. I have boxes of original TZ 750 parts. Two gas tanks, wheels, wind screens, etc. This is the definition of a vintage collectors race bike!  Its the best sounding 4 cylinder two stroke race bike you will ever hear.  Its a beautiful race bike with a ton of history and do not let this one get away! You wont find a more unique, rideable race bike.

She is looking good under the hood.  You basically have a restored bike that hasn't been used since.  How rare are the wheels the seller describes?  Here is some good tech talk on the TZ750 I purloined from an interesting blog on Yamaha race bikes:

To start off from the beginning, what Yamaha actually did was graft two 350 cc twin race engines and together they belted out 90 bhp from the crank with bore/stroke ratio was 64mm x 54mm. These twins were the TZ350. The crankcase itself was of ultra-lightweight magnesium construction, with the crankshaft having blanked off ends to keep the engine as narrow as possible. The primary drive was taken from straight cut gear cogs from the middle of the twin crankshafts. A massive dry clutch sat along with three of the exhaust pipes on the right of the engine. A spindly, tubular steel frame held the engine, with narrow telescopic forks at the front and conventional twin shocks at the rear. Later, TZ750 models (also known as OW31s) had vastly improved monoshock rear suspension, with a cantilevered swingarm to improve handling. It was named F750 as a prototype although it was actuallt 700cc. Awesome! 90 bhp from a 2 stroker would shred any kind of race tire way back then. Kel Carruthers, the 1969 250 world champ was the first man who tested the bike. He removed the initial glitches by increasing the swingarm and improving the suspension. Still except for Kenny, the others were quite slow on the tracks as they were not able to handle it as the bike had small fork tube and chassis. After about 3-4 races, Yamaha added some more power! Another 20 bhp. Why? Because according to Kel, "It wasn't as fast as it could have been. They were really conservative in the way they built it.” In a way, Kel was actually serious. You know Yamaha back in the late 60s had V4 250cc GP bikes which were making around 75bhp, so logically the bike should have around 140bhp. Of course there was no chasis or tyre which would have hold it was another thing, but come to think about it, the bike with modifications later did belt was that much power.

 

I honestly can't imagine the hit this bike would have.  I've always thought a healthy 250cc two stroke gives a nice adrenaline rush.  Maybe it is an optical illusion but I don't know how that upper muffler doesn't cook your leg.

It will make an excellent addition to any collection or instantly turn you into the bad boy at  the track.  If you interest still isn't peaked it looks like it is a "no reserve" auction.  It is going home with someone.  Click to win.

Ian

Classic Sport Bikes For Sale May 8, 2011 posted by

What’s New at ClassicSportBikesForSale.com

Here are the latest bikes posted over at our sister site, ClassicSportBikesForSale.com, where we feature 25+ year old sporting motorcycles. Got an interesting classic for sale? Email me!

dc





dc

Classic Sport Bikes For Sale January 26, 2011 posted by

How Brave Are You? 1974 Yamaha TZ750

How Brave Are You?  1974 Yamaha TZ750

 Well big fella, are you really brave enough to ride this beast?  A 750cc two stroke, in that frame, with those wheels?  Not on my to do list my friends.  I honestly can't fathom what an untamed 750cc two stroke from the 70's is like to ride.

This picture says it all.  Expansion chambers running amuck.  The sound must be something else.  I would think this thing would want to twist the frame into a pretzel when it comes on the pipe.

Part of a 10 bke GP collection for sale?  This guy's email is going to fill up fast.

Part of 10 GP bike collection for sale. This is a 74 TZ700 updated to a 77 spec. bike. Frame work done in 76 by Wasco. The engine is all fresh. bottom end done by Scott Clough Racing. Top end is original 140 hp Don Vesco cyl`s. Piston assy`s from Ferry Brower.
This is a ground up re-build and nothing has been over looked. It is track ready or for your display. The bike has not been run.
Bike is sold as is and ships to the US lower 48 states only...Known ridder history. Included in the sale are $6600. in new and used spare parts. You can E-mail me for further information and pictures @

Just like it  came from the factory.  I do not know the seller but I've seen some of his previous projects up for auction and the bikes just look gorgeous.  I've done some restoration projects and when I see stuff like this  I realize I'm just a amateur.

Now be honest, would your heart not be racing knowing you were about to ride this thing around a track?  Here is a great read from Motorcyclist Magazine about racing one at Daytona.  Here is some more history on it from Superbikeplanet.com.  They made this fun comparison:

Compare: 
the 1974 TZ700 and the 2000 R7 Superbike

  TZ700 R7
Wheelbase 56.28" 56" 
Weight 345 lbs 356 lbs 
Front Tire  3.25 x 18 3.5 x 17
Rear Tire 3.5 x 18 6 x 17
Horsepower 145 173

 

   The buy it now price for some Yamaha race history is $45,000 and the seller has added the it is a matching numbers bike.  Be sure to check out the auction because he has also listed all the spares included.  If you have the nads and the wallet .

NASTY!!!!!!

IK

   

Classic Sport Bikes For Sale September 29, 2010 posted by

1976 Yamaha TZ750C Project on eBay

A genuine TZ750 on eBay!

Bike:  1976 Yamaha TZ750C

Location:  Franklin, Michigan

Mileage:  TMU, engine is a later S/N replacement.

I'll let the seller state the description so I don't get anything wrong:

1976 Yamaha TZ750C Road Racer: Frame No. 409 - 100101, Engine No. 409 - 200224.HISTORY: I purchased the Yamaha in 1990. No other known history.

ORIGINALITY: The frame number is the first of the 1976 TZ750C production run. It is estimated that 40 machines were built. The engine number indicates that it is dated 1979. The left and right side cylinder barrels each have "347cc 40900" embossed at the rear. The fairing and screen are new Mead Speed parts. The swing arm has been reinforced, but has a very similar appearance to original. The wheel rims are stamped "Daido Japan". The tires are Continental 3.25 H 18 RB2 (front) & Goodyear Eagle Drag Racer 25 x 7.0 x 18 (rear). The kill switch is missing, but the kill switch pigtail is original and attached to the CDI Controller Box. (2) tiny black tie wraps are used to mount the water temp gauge in place of the original clips. Some of the metric fasteners are not original Yamaha parts. All other parts are original Yamaha. Restoration has been carried out using the pages from the parts manual for reference.

CONDITION: The fairing and all black parts have been professionally painted. The screen to fairing attachment is adequate, but not excellent. The fuel tank, seat and front fender have the original paint. The tank has a tiny surface scratch on the left side and a ding and scratch mark on the right side, as shown in the pictures. These parts have been intentionally left unrestored to retain their originality. All other parts are excellent, but not all have a museum quality finish.

COMMENTS:
1) The mileage is unknown and the listed mileage is an approximation.
2) I have never had the engine running.
3) Engine compression, gear selection and clutch operation are normal. During storage, the cylinder bores were oiled and the transmission fluid was installed.
4) The transmission and brake fluids have recently been drained.
5) Many of the fasteners have not been correctly torqued and the machine is not suitable for immediate use.
6) The Yamaha does not have a title.

If you like sportbikes, and I assume you do, the TZ750 is pretty much a to-die-for bike and probably even more so than a Black Shadow depending on your generation.  The TZ750 debuted in 1975, following the TZ700, with cantilever rear suspension and put out near 140hp giving it a top speed of over 185mph.

If a TZ750 doesn't get your blood flowing, this probably isn't a hobby for you.  Read a fantastic write up of a, California, street titled TZ750 from 1979 here.

This example for sale has obviously been a display piece and would hold it's value nicely if you decided to continue letting it sit in your living room.  However, this bike has enough influence to possibly make you make, perceived, rash decisions and cash out retirement funds just to be able to head out to the garage and listen to it.  Drool over it on eBay .

AG

Consider these other Yamaha's:

[AffomaticEbay]yamaha rz[/AffomaticEbay]