Author Topic: My big bike, 1981 IT465H  (Read 977 times)

0 Members and 1 Guest are viewing this topic.

Offline keny

  • Yama-Legend
  • ***
  • Posts: 185
My big bike, 1981 IT465H
« on: December 02, 2018, 05:58:50 AM »
So I made a perhaps crazy trade, Gave my running as plated 1987 Suzuki TS250X as a running project 1981 Suzuki PE175X away and got a 1981 Yamaha IT465H instead! 
I have a long time lusted to own a big bad bike!
The 465 is in nice condition for a almost 30 year old bike, and it has some nice upgrades as well.
The plastic is DC, the oem style rear fender was not mounted, instead it had a Mailer mx rear fender, as in the pictures.
The oem style rear fender also has a oem tool bag, that is cool even it`s a bit rough in shape. The orginal tail light lens is missing, a high $ part, but I have a plan B for this....
The tank is a 4 gallon Clarke aftermarket tank, even a smaller tank came along, don?t know if it?s a IT or YZ tank thro.
Wheels are straigth as in tune and tires has life left, front is a Dunlop MX3S that is fresh, dot stamp say 0118, rear is a Mefo MSG100, a monster tire actually made for sidecar mx... Talking of, the rear rim is changed from oem 17" (oem rim as spokes came along) to a 18" sun rim. Good for tire choices! I have a good 18" 952 Dunlop that I think I will spoon on quit soon I think, we have to see...
Engine starts good, should have a piston in first over size in it. Exhaust has a few small dents, nothing major, orginal silencer has a few repair spots but otherwise good, but mounted is a MX style DEP aluminium silencer.
As to personal taste difference, I like to mount fork boots to the bike, so oem style clamps are on the way, new for boots I happen to have at home! Closer inspection made me notice the front brake cable routing is a bit off, lower guide mounted wrong way and upper missing. Also silencer lower mount is not the right one, these are also on the way.
I really had hope the side stand had come along, but didn?t, closer inspection made me pass to get a new stand for now, the place the stand mounts is not so good, and sadly a part welded to the frame, not bolted like on the PE Suzuki, a thing I have to say I think Suzuki?s design is smarter even adding a few grams weight.
Other things I plan to do is to change the crome handlebar, first I don?t think it suits the bike, second it?s crazy wide!
Handguards is on the list, I have a pair, have to see if they fit/work, are copys of Acerbis plastic bark busters.
I also think I might change the front fender to a 82->90 design one, white, as the DC one is not so quality looking.
The odo/milage counter is taken off, but came along, mounting hardware is missing even the support is still on the top triple. Also the button the zero the counter is missing as the speedo cabel.
Front light don?t work, the cool yellow headlight is of sealed beam design and burned sadly, so a new replica is on the way.
I have to check the jettings also, former owner had put them back to stock (had YZ jettings as needle, but was running to ritch), but sounds it?s running lean now. What jets are folks running at sea level for around freeze temps as +10C?
Looks the sprockets are diffrent to oem, 14/44 is oem, mine has 14/50, a 15 front came whit bike. The rear wheel is 18" so sligthly bigger OD, but theink 14/46 or 14/48 should be close to what it should be? have to test and see.
So we have to see how these little adjustments/mods will work out, and I really looking forward to test this bike next spring! Have to wait until then becorse of my wrist, not well enough to ride yet, even good enough to work on the bikes!
In Garage, Yamaha s: -83 IT175, -86 IT200, -81 IT465, -90 XT600Z,
Honda s: -97 CR125R, BMW: -11 R1200GS 30th edition

Offline Martin I Henry

  • MODERATOR
  • Yama-God
  • *****
  • Posts: 9886
  • Europe
    • Dave's Bikes
Re: My big bike, 1981 IT465H
« Reply #1 on: December 02, 2018, 06:26:14 AM »

That is a good trade Kenth.

Here is a drawing of an IT250H/J 465H/J side stand bracket if you need to make one:



Cheers,

Dave.

Offline keny

  • Yama-Legend
  • ***
  • Posts: 185
Re: My big bike, 1981 IT465H
« Reply #2 on: December 02, 2018, 06:32:46 AM »
That is a good trade Kenth.

Here is a drawing of an IT250H/J 465H/J side stand bracket if you need to make one:


Cheers,

Dave.
Thanks Dave!

You have a drawing for a 200 side stand bracket as well?
In Garage, Yamaha s: -83 IT175, -86 IT200, -81 IT465, -90 XT600Z,
Honda s: -97 CR125R, BMW: -11 R1200GS 30th edition

Offline Martin I Henry

  • MODERATOR
  • Yama-God
  • *****
  • Posts: 9886
  • Europe
    • Dave's Bikes
Re: My big bike, 1981 IT465H
« Reply #3 on: December 02, 2018, 06:36:51 AM »

Quote

You have a drawing for a 200 side stand bracket as well?

No !

Next time I get to my IT200S, I'll see if I can make a drawing.

Cheers,

Dave.

Offline wayne61

  • Yama-God
  • ******
  • Posts: 1596
Re: My big bike, 1981 IT465H
« Reply #4 on: December 03, 2018, 09:30:35 PM »
You'll have to add the 4 missing dimensions and some tolerances before I sign it off for design check Dave  ;D ;D

Go soothingly on the grease mud, as there lurks the skid demon.

GRIP AND RIP CRAIG AND CHRISSO!!!

Offline Devondan

  • Yama-God
  • ******
  • Posts: 2397
Re: My big bike, 1981 IT465H
« Reply #5 on: December 04, 2018, 07:39:11 AM »
Can?t I just draw around it?!
IT  400D - Trail riding
74 Montesa Cappra - Racing
YZ250 H - Racing
Norton ES2 500 trials
Norton 250 Jubilee - Road
Norton 350 Navigator (in boxes)
Norton 350 Single M50 (in boxes)

Offline wayne61

  • Yama-God
  • ******
  • Posts: 1596
Re: My big bike, 1981 IT465H
« Reply #6 on: December 04, 2018, 11:11:50 PM »
Of course you can.
But the drawing doesn't say "LOFT" and validated at 1:1

That's all proper old fashioned now, we're all about "3D Model is Master"

If we had a 3D model we could ALM some in steel (AKA 3d print)
Go soothingly on the grease mud, as there lurks the skid demon.

GRIP AND RIP CRAIG AND CHRISSO!!!

Offline keny

  • Yama-Legend
  • ***
  • Posts: 185
Re: My big bike, 1981 IT465H
« Reply #7 on: January 01, 2019, 12:31:00 AM »
Some slow upgades....tail light lens just still needs fastner bolts as some seelant  :D
In Garage, Yamaha s: -83 IT175, -86 IT200, -81 IT465, -90 XT600Z,
Honda s: -97 CR125R, BMW: -11 R1200GS 30th edition

Offline wayne61

  • Yama-God
  • ******
  • Posts: 1596
Re: My big bike, 1981 IT465H
« Reply #8 on: January 03, 2019, 01:23:21 AM »
I think the zip ties are a better solution than screws in brass inserts  :D
Go soothingly on the grease mud, as there lurks the skid demon.

GRIP AND RIP CRAIG AND CHRISSO!!!

Offline keny

  • Yama-Legend
  • ***
  • Posts: 185
Re: My big bike, 1981 IT465H
« Reply #9 on: January 27, 2019, 05:52:55 AM »
So as I did run into trouble whit the IT200 and have to wait for a part I decided to look closer on the IT465

Aside from puting the oem style rear fender (that I think is a IT175 fender actually, so short) on, as a new headligt lens and oem muffler and changed front brake pads, I have done nothing to it.
I would like a diffrent handelbar, don?t like the crome one. Wounder what bend speck a oem bar would have`
The the former owner told me the bike did run really fat as he go it and he had changed jets to oem speck, they had been YZ speck. So I decided to take carb off and check it out, it sounded like running really lean as I was pickeing it up in just below freezing temps. Well I?m not that surprised they where YZ speck, the carburettor say 5X6, 1982 YZ490 38mm carb!
So jetting is a mess now. it has a 370 main (long hex, should be short version I belive), 40 pilot and 166Q2 needle jet and a 6DH4 needle that was full upp. Slide it YZ 3.0, not helping out....and as I did take of the cap, it was so hard tigten I had to use a tool and broke the choke button off....not my day...
In Garage, Yamaha s: -83 IT175, -86 IT200, -81 IT465, -90 XT600Z,
Honda s: -97 CR125R, BMW: -11 R1200GS 30th edition