PLease help!?

Question

My brother got me a yamaha 170 and the year of it is 1971! I need to find parts for it and a piston! I wana get a new seat and paint it! i am wondering if you know a site that has that kind of bike in it! i have tryed e-bay and nothing! I need any and every kind of help you can give me! Please help!

Answer 1

You've probably got a CT1 175,,,Single Cylinder "Dirt Bike"?

A 71 would be a CT1-C

Like This?
This one is repainted,and different front fender,,but has some close-ups pics
http://www.bikepics.com/pictures/648964/

Here's one that nearly Original,,except for orange rear shocks
http://reno.craigslist.org/mcy/229877821.html

Engine number is on lower left hand side of motor,toward the rear
Frame Number is on Steering Head,,where forks attach to frame.

If You happen to have gotten that "170" figure from a cast-in number on the engine's Cylinder that sez 170cc.....that's not unusual.

Japs cast actual engine size like that,,,then call the Bike a Name according to "Class".
"100's" are usually 98cc
125's,,,118,,123cc??
250's,,238,,245,,etc.

A 350 Twin Suzuki back then was actually only 315cc's
Honda 350 was 325cc

So the CC Size on the engine cylinder is basically meaningless.

If Yours actually IS a CT1 175...Yamaha dealers still have most stuff avaialble.

Ebay often has stuff,,several various websites,,,and salvage yards

Search for "Yamaha 175" or "CT-1 175",,CT1,,such as that.
CT1 was '69
CT1-B was '70
CT1-C='71

They're all basically the same.
In '72Yamaha Changed Top End of engine to a Reed Valve Intake,,,and renamed the "CT2"

They introduced 125's and 175's in 1969.
AT1-125
CT1-175

The Rolling Chassis and Basic Engine is the same.
Brake Shoes,Clutch/Brake Cables,foot pegs/rubbers,,Clutch plates,Sprockets,,Fork Seals,,Seat,Tank,,etc,etc all the same.

The Electrical Systems are ENTIRELY different,,including Ignition System Parts.
The 125's had 12V Electric Start,,"big" battery,different wiring harness,,Points/Coil/Condensor,,,and of course headlight & all other bulbs

The 175's had a magneto ignition,,,with a 6v lighting sys.

Even After '71,,,Many of AT-2 and CT-2 Parts will retrofit/Interchange.

No Telling what kind of deal you'll find searching for parts,,or what you'll have to use.
LOTS of 125 parts fit,,,Most '69 thru 71 parts are virtually Exact Same,,,and Many parts AFTER 71 up till 73~74 will easily adapt or retrofit.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If what you have actually IS a CT1 175,,,those are ALL excellent bikes from that era.

More than "excellent" actually,,,they can be considered Historical Milestones,,for what that's worth.

In 1968 Yamaha introduced a 250 DTI "Enduro".
It was 1st Japanese "Dirt Bike " styled after the European "MotoCross" Bikes of that era.

Up till then,,Jap dirt bikes were small "trail bikes" or Scramblers which were Street Bikes with High Mounted Exhaust.
There were Way Cool,,,but Nothing Like a "Dirt Bike".
Everything bigger than 100 was a Twin Cyl Engine

The '68 DT-1 250,,and the AT1-125 & CT1-175 introduced in '69 are probably THE Link between '40's~Mid '60's Style 2Strokes & Dirt Bikes,,,and Modern Day bikes.
Kind of like evolutionary step to begin modern era.

More than changing Bike Technology,,,
they Changed the Sport of Motorcycling in USA

What HONDA did in early/mid '60's for Motorcycling image in America,,,and making Biking a Practical Activity for "Everyone"
in terms of Street Riding,,,

The Yamaha Enduro Series models did same for Dirt /Offroad Riding in USA.

All of them were excellent bikes,and always have been.

The 175's were light & nimble,,had plenty power,,and were solid as a rock.

Obviously they're NOTHING like Modern Bikes,,,
but 35 years Later they're still great bikes to fool around on.

It thats indeed what you happen to have,,,it'll be a fun & worthwhile project..


Good Luck

Answer 2

Pistons are funny things. You would be surprised at how many cage (car) pistons are close to, if not dead on matches. I assume you have the upper end apart? Get the measurements and start searching the 'web'
As for the seat, if the pan is good, pull it yourself. Same goes for the 'paint.'

Answer 3

Always give year, make, engine size and "model #" when asking questions. Without that complete info, it's difficult to research your question.
Are you sure you've got your #s right? I've never heard of a Yamaha 170.

Answer 4

Hi, thier are places that have motorcycle junk yards throuth out the u.s. that can help you out, parts for the motor can be found rather easily thru cycle shops,they just need to size up piston ,bearings,crank,cam springs and so on.EVERY else is a cosmedic problem and can easily be done.The running gear,brakes,transmission and steering are formost the most important things to be done.SAFTEY FRIST ALWAYS when it comes to two wheelers.

Answer 5

Try www.alfaheaven.com