@@corymacdonald383 regular NGK plugs tended to not last very long on the Kawasaki. I might have gotten a month on one before cleaning or replacing. The big issue, was needing to ride home in the rain - a rare occurrence in that area. The v-plugs would allow me to ride the twenty miles or so home. The regular kind would foul with minutes unless I removed the air filter. The v-plugs also lasted several times longer, and made the bike more reliable in general. I ran them unless I had no other choice. Note: the F7, while a 175, was 1) rotary valve, and 2) had more power than many (street-legal) 250s of its era, e.g. 1973. I had cleaned up the ports in the process of rebuilding the engine, as well as matched them. I was not able to improve the handling to a similar degree, unfortunately. I wish I still had it.
Man I love and hate your videos.. I love what you guys do with these old bikes .. I hate that I can't win a bid or afford these beautiful bikes.. keep the dream going guy's..
I personally know the guy who owns the very last Yamaha DT 175MX (a 1986 model if I'm correct) that was imported into Ireland. Last time I looked it had only 11.1 miles on it from been pushed. It was never ridden and wasn't even registered for street use (no licence plate) and its now sitting pretty in a museum... Its still essentially a brand new bike (although the engine has probably seized up by now as it hasn't been started for years)
Nice bike, i can do a top end on that in 30 to 35 minutes, I had one and raced it at the very first supercross in las vegas at Sam Boyd silverbowl, a bit heavy but a fast bike.
Would be an excellent offroad/ harescramble machine as well. Thing is as good as that one looks I wouldn't even ride it around my yard. If the Japanese bike makers wanna sale the hell out of some bikes, being back the air cooled 2 stroke, hell bring back the whole IT line. They can make them cheap, and sale at decent profit margin, plus the volume of the amount they would sale would make them a fortune.
The 1981 Yamaha YZ 100, 250 and 465 series was a complete and total success due to the company improving upon their 1980 products. Not so with Kawasaki, Suzuki or Honda. The forementioned 3 all introduced new products that were a failure, except for Suzuki, they got it okay in 1981. Maico also learned from from Yamaha to improve upon their 1980 product and to be patient and wait. Was the 1981 Suzuki lines Superior? Absolutely not but they were better than Honda and Kawasaki's attempts. 1981 Yamahas and Maico's rocked the scene on a local level. People rave about the 1981 RM 125 and 250... In comparison to what? A properly set up 1981 Maico or YZ250 waxes the competition. The 1980 CR250 is a real gem. Let's not forget the 1981 Husqvarna line, a superior motorcycle in every facet of its design.
H was Last yr. for the mono-x(Yama-Hop) had the longest rear swing arm. So if you notice it didn’t easily try2 to Loop out. Plus the H had larger diameter fork tubes(very stable)
I had that bike. It was a ripper. If memory serves me right, it was the last year of that swingarm and before Yamaha stupidly added the radiator to the triple clamp. LOL
I had a 1978 yz250 in 1980 'I fitted lights to it' and used it on the street 'I felt like I could drag anything off with it'' I dragged off a porche from the lights I remember. Violent power delivery Does anyone remember the poster by dirt bike mag with kenny zahrt "on the wall of death" on a yz 250 g.
True, it might be an '81 but the wrong tank graphics, seat and silencer kill the vibe for me. Part of what makes these bikes valuable is bringing back the exact look and parts/setup of the specific year.
Don't like the safety seat it's not meant to have one, next J model had them. Don't think it's meant to have YEIS neither, but I love it. Bob Hannah, Marty Tripes, Broc Glover
Sad how many ppl have forgotten how simple cool light and fast these bikes were. Super sweet YZ!. Sure glad hung onto my 83 480.
Exactly don’t go through a river see you later brakes 😂
83 CR480 was an absolute gem of an open class bike, the 84 500 was a step backwards in my opinion...
The early 1979-81 YZ’s are gorgeous!!!!
Sweet Bob Hannah era YZ 250 ...heros and dreams of Yamaha's from that era..FTW 🇺🇸
Forget the Ferrari, forget the Lambo, give me an 80's Yamaha any day.
I owned one of these. Loudest bike ever. Fast as hell. It use to eat spark plugs like candy.
V-plugs? (Gold-palladium, so called fine wire electrodes. Used to use B9hv plugs in the F7 Kawasaki.)
@@dennisyoung4631 I believe I use to use NGK BR9ES
@@corymacdonald383 regular NGK plugs tended to not last very long on the Kawasaki. I might have gotten a month on one before cleaning or replacing.
The big issue, was needing to ride home in the rain - a rare occurrence in that area. The v-plugs would allow me to ride the twenty miles or so home. The regular kind would foul with minutes unless I removed the air filter. The v-plugs also lasted several times longer, and made the bike more reliable in general. I ran them unless I had no other choice.
Note: the F7, while a 175, was 1) rotary valve, and 2) had more power than many (street-legal) 250s of its era, e.g. 1973. I had cleaned up the ports in the process of rebuilding the engine, as well as matched them. I was not able to improve the handling to a similar degree, unfortunately.
I wish I still had it.
Man I love and hate your videos..
I love what you guys do with these old bikes .. I hate that I can't win a bid or afford these beautiful bikes.. keep the dream going guy's..
Wow so sick, like you said it's mind boggling how these bikes survive time.
I personally know the guy who owns the very last Yamaha DT 175MX (a 1986 model if I'm correct) that was imported into Ireland. Last time I looked it had only 11.1 miles on it from been pushed. It was never ridden and wasn't even registered for street use (no licence plate) and its now sitting pretty in a museum... Its still essentially a brand new bike (although the engine has probably seized up by now as it hasn't been started for years)
@@Kickback-dm7zt That's awesome, made the year I was born.
I have a 79 YZ250 I love out loud it is lets people know I'm old but I'm still here
Absolutely beautiful ! These bikes of early 80s are just pure music to my ears
Nice bike, i can do a top end on that in 30 to 35 minutes, I had one and raced it at the very first supercross in las vegas at Sam Boyd silverbowl, a bit heavy but a fast bike.
Clean, big brother to my 2, 1980 yz125g's. Really like the look of the aircooled yellow Yamaha's. Good luck with the auction.
God Bless You someday would love to see your place
I recall being told many years ago that these, in slightly detuned form, worked well for trail riding.
You are right...I remember my friends got four new ones ( 125 and 250 ) that year . They were sweet bikes ! PK
Great bike..I had a '81 250 yammahammer&I beat the living dog turds outta it..very reliable machine and great stability.
thanks for all the cool vids . love seeing all the bikes .
Had to return to this baby 😍
Would be an excellent offroad/ harescramble machine as well. Thing is as good as that one looks I wouldn't even ride it around my yard. If the Japanese bike makers wanna sale the hell out of some bikes, being back the air cooled 2 stroke, hell bring back the whole IT line.
They can make them cheap, and sale at decent profit margin, plus the volume of the amount they would sale would make them a fortune.
The 1981 Yamaha YZ 100, 250 and 465 series was a complete and total success due to the company improving upon their 1980 products. Not so with Kawasaki, Suzuki or Honda. The forementioned 3 all introduced new products that were a failure, except for Suzuki, they got it okay in 1981. Maico also learned from from Yamaha to improve upon their 1980 product and to be patient and wait. Was the 1981 Suzuki lines Superior? Absolutely not but they were better than Honda and Kawasaki's attempts. 1981 Yamahas and Maico's rocked the scene on a local level. People rave about the 1981 RM 125 and 250... In comparison to what? A properly set up 1981 Maico or YZ250 waxes the competition. The 1980 CR250 is a real gem. Let's not forget the 1981 Husqvarna line, a superior motorcycle in every facet of its design.
Good summarising Yam tried hard to address the shock overheating being located in that position.
A real gem. 🎯
i have a 78 ts 100 er very similar to these era bikes except engine power of course awesome bikes love the vids
This is the one! Holy WOW!
Stunning 😍
Steel sleeve = forever engine.
Fantastic!!
If you were a football team you'd be the champions you have a great team congratulations
H was Last yr. for the mono-x(Yama-Hop) had the longest rear swing arm. So if you notice it didn’t easily try2 to Loop out. Plus the H had larger diameter fork tubes(very stable)
Looks just like my 77 YZ 125 did. Sounds like it too.
Thank God for YAMAHA
That seat spoils it and the 1980 tank stickers
I had that bike. It was a ripper. If memory serves me right, it was the last year of that swingarm and before Yamaha stupidly added the radiator to the triple clamp. LOL
I had a 1978 yz250 in 1980 'I fitted lights to it' and used it on the street 'I felt like I could drag anything off with it'' I dragged off a porche from the lights I remember. Violent power delivery
Does anyone remember the poster by dirt bike mag with kenny zahrt "on the wall of death" on a yz 250 g.
Last year of the air cooler?
Ding ding 👊🏻✊🏻👍🏻
time machine ❤
Rear fender is cropped😐 backgrounds should be white, seat is wrong. Spark arrestor on a mx bike? Other than those items, it looks ok...
That’s how a mx’r should idle .
These YZ.s did not use a centercase gasket
The 81 did not have a safety seat.....The pipe is also not orignial. That bike was probably a ground up restoration.
Yes it was on a low hour mint original. The unscathed cycle parts are proof
True, it might be an '81 but the wrong tank graphics, seat and silencer kill the vibe for me.
Part of what makes these bikes valuable is bringing back the exact look and parts/setup of the specific year.
Nice!!
ALLRIGHT UA-cam where are my notifications? Getting a bit heated hear! Yet another vid I spotted by luck
چه روزهای که با تو به شبهای خاطرات پیوستم .تو را من چشم در راهم .یاماهای دوست من
were these still 6spd?
wish they kept that color and graphics .
Today they all look the same.
They were all 5 speed.
6 speed in a 250 is very recent.
@@dr.hugog.hackenbush94431978 yz had i think. Long ago.
My Husqvarna all had 6 also.
@@dr.hugog.hackenbush9443 Incorrect, the '79 F and '80 G were 6 speeds. The '81 H went back to the 5 speed. Wiki is often wrong, I have the brochures.
Yamaha used that engine head on the DTs.
sweeeeeeeeeeeeeeeeet 💯💯💯💯💯👍👍👍👍
I want it 😫
I had one it was white
Hurricane!!!
Is it an H or a G model???? Its listed as an H (1981) but you keep calling it a 1980 (G), the tank graphics are 1980 (G).
81
Don't like the safety seat it's not meant to have one, next J model had them. Don't think it's meant to have YEIS neither, but I love it. Bob Hannah, Marty Tripes, Broc Glover
Wrong tank stickers. For 81 Is the seat correct I don't believe they had a safety seat in 81 I might b wrng.
Looks like a 1980 model.
NE GUNLER SENLE YASHADM YAMAHA ÇAN
Can you say Bob (Hurricane) Hannah