« previous next »
Pages: [1]   Go Down

Author Topic: Hondamatic 1976 build  (Read 2711 times)

0 Members and 1 Guest are viewing this topic.

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Hondamatic 1976 build
« on: June 17, 2015, 08:30:56 AM »


Ceramic coated casings
Logged

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
  • Really Old Timer ...
  • *******
  • Posts: 15,731
  • SOHC/4 Member #1235
Re: Hondamatic 1976 build
« Reply #1 on: June 17, 2015, 08:36:38 AM »
Quote from: hondamad on June 17, 2015, 08:30:56 AM


Ceramic coated casings

Hi hondamad,

It appears from your "Subject" line that you are working on 1976 Hondamatic.  Can you provide some additional information, as all that is posted are pictures of the cylinders and your crankcase?   Is this a restoration or do you have some other direction.  Do you have the rest of the bike or is this the start?
Logged
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #2 on: June 17, 2015, 10:46:49 AM »
Its the start of a restoration of a 1976 honda automatic. The base bike is a basket case where

every part on the. Bike will have to be rebuilt
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #3 on: June 17, 2015, 11:43:16 AM »
The rusted internals , bike stood open to the elements
Logged

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
  • Really Old Timer ...
  • *******
  • Posts: 15,731
  • SOHC/4 Member #1235
Re: Hondamatic 1976 build
« Reply #4 on: June 17, 2015, 12:04:51 PM »
That's definitely a challenge.  It looks like you've already torn it down completely. 
Logged
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #5 on: June 17, 2015, 12:11:25 PM »
Taken the motor apart mostly surface rust. Problem is auto box parts , bought another trans but input shaft springs also gone. Found a source and waiting with bated breath to see if they work. These springs are in my opinion a design fault
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #6 on: June 17, 2015, 12:16:16 PM »
Broken spring shown other parts of input shaft are ok
Logged

Offline Restoration Fan

  • My wife will never call me
  • Master
  • *****
  • Posts: 1,966
Re: Hondamatic 1976 build
« Reply #7 on: June 18, 2015, 10:29:46 AM »
Bill Benton has a couple of complete Hondamatic engines still on bikes in his stash if you start looking for parts.  I know that for certain because I had to move one of them out of the way to get my CB500 frame out when I bought that from him.

He goes by BillBentONRacing on these forums.  Great guy with a huge stash of Honda parts/bikes and an even larger supply of Honda knowledge.
Logged
Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #8 on: June 18, 2015, 12:21:52 PM »
Thanks for the info, i will see how it goes from here
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #9 on: July 19, 2015, 07:38:54 AM »
Found new springs
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #10 on: August 07, 2015, 05:01:17 AM »



Inexpensive and does not leave residue using sodium bicarbonate
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #11 on: August 07, 2015, 05:03:59 AM »
1976 automatic trans

Typical Honda beautiful engineering
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Hondamatic 1976 build
« Reply #12 on: August 21, 2015, 12:15:22 PM »
Hondamatic oil pump.
No oil seals required. Does anyone know why there are marks on inner and outer rotors ?

« Last Edit: August 21, 2015, 12:17:18 PM by hondamad »
Logged

Offline oldhatt45

  • The person called in at the last minute to share the blame is the...
  • Expert
  • ****
  • Posts: 902
  • Just an Old Guy that's gone to the Dogs
Re: Hondamatic 1976 build
« Reply #13 on: August 21, 2015, 12:24:44 PM »
hondamad,

If your question is about those stamped in Dots, they (the Dots) show that both rotors get assembled with the Dots facing You.  :)
Have you measured the clearance between Inner and Outer Rotor, as well as between Outer Rotor and Body?
(On the K bikes it's supposed to be less than 0.35mm).

Charlie
Who just rebuilt his K6 Oil Pump   :)  :)
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #14 on: August 21, 2015, 01:39:38 PM »
Hi Charlie
Thanks for the feedback.
It pump measures up like new , amazing  considering the sump had water in it when drained.
Logged

Offline oldhatt45

  • The person called in at the last minute to share the blame is the...
  • Expert
  • ****
  • Posts: 902
  • Just an Old Guy that's gone to the Dogs
Re: Hondamatic 1976 build
« Reply #15 on: August 21, 2015, 03:05:34 PM »
hondamad,

Glad the rotors measure out good!

How do the Lobes of the Inner Rotors Look?????
Any dings, scratches, marks??????

Charlie
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #16 on: August 21, 2015, 11:12:44 PM »
Hi Charlie,

The internals of the pump are spotless looks brand new , quite amazing considering the water i found in the oil.
Regards
Derek
Logged

Offline oldhatt45

  • The person called in at the last minute to share the blame is the...
  • Expert
  • ****
  • Posts: 902
  • Just an Old Guy that's gone to the Dogs
Re: Hondamatic 1976 build
« Reply #17 on: August 22, 2015, 04:56:46 AM »
hondamad,

Glad the Rotors are in Good Shape!!!!!
I haven't looked at the parts fiche for the "A", but you might want to check with SOHC4 member Elan.
He has all the Gaskets & seals for the K type Oil Pumps, including the Screens, to rebuild the K type pumps.
Excellent to do business with!!!!

Are you Sure that there is no Oil Seal between the Scavenge & Delivery Side of the Oil Pump????
Doesn't seem right to me, but then I know very little about the "A's".

Charlie
Logged

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Hondamatic 1976 build
« Reply #18 on: August 22, 2015, 05:27:19 AM »
There is no place for a seal and none fitted. Same goes for the O rings. Pump is completely different to my k4

Derek
Logged
Pages: [1]   Go Up
« previous next »