Author Topic: Sandcast 4286 Project  (Read 162264 times)

0 Members and 11 Guests are viewing this topic.

Offline rtbmrgl

  • Expert
  • ****
  • Posts: 795
  • Got Points! Roseville, Ca
Re: Sandcast 4286 Project
« Reply #675 on: September 27, 2014, 04:42:05 PM »
Damn. I'm just frustrated with this bike.  There's a leak coming from the pucks on the #3 cylinder on the #2 cylinder side.  I get a couple drops pooling on the head fins above the head gasket...it's the classic puck leak.

THAT SUCKS!!!!!
thanks, Mark
Roseville, Ca

Got Points!

1973 CB500 back yard find 1243 orig mi,  http://forums.sohc4.net/index.php?topic=124285.0
1976 CB750 Restoring,        http://forums.sohc4.net/index.php?topic=132997

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,279
  • ROCK & ROLL
Re: Sandcast 4286 Project
« Reply #676 on: September 27, 2014, 05:53:13 PM »
Puck that Greg... :P ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,447
  • Central Texas
Re: Sandcast 4286 Project
« Reply #677 on: September 27, 2014, 06:38:35 PM »
Mother Pucker!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline edwardmorris

  • Youngish
  • Old Timer
  • ******
  • Posts: 3,142
  • Do not cause harm, nor respond to harm with harm.
Re: Sandcast 4286 Project
« Reply #678 on: September 28, 2014, 11:43:33 AM »
Damn! All 750 engines are pucked in the head  :P
« Last Edit: September 28, 2014, 12:22:33 PM by edwardmorris »

Offline rtbmrgl

  • Expert
  • ****
  • Posts: 795
  • Got Points! Roseville, Ca
Re: Sandcast 4286 Project
« Reply #679 on: September 29, 2014, 09:38:35 PM »
Ill bet you wish you could just Puck-it all, and start Pucking laughing.
thanks, Mark
Roseville, Ca

Got Points!

1973 CB500 back yard find 1243 orig mi,  http://forums.sohc4.net/index.php?topic=124285.0
1976 CB750 Restoring,        http://forums.sohc4.net/index.php?topic=132997

Offline Magpie

  • Old Timer
  • ******
  • Posts: 3,324
Re: Sandcast 4286 Project
« Reply #680 on: September 30, 2014, 01:44:35 PM »
I have come,
I have pucked,
then I repucked!
Dammit!!!
I feel your pain.
Cliff.

Offline Greggo

  • Somebody's
  • Old Timer
  • ******
  • Posts: 4,164
  • Helmets Save Lives. Period.
Re: Sandcast 4286 Project
« Reply #681 on: October 03, 2014, 03:17:47 PM »
I'm glad you leaky puckers think it's funny ;D ;D  I will pull the motor to re-torque the head after a few miles anyway...I was just hoping to get away with skipping that.

I got the rear brake pedal assembled correctly without removing the swing arm.  Installing the spring on the pedal cam required a little help.  The two right carbs are leaking from the overflow tubes, so I think I'm going to replace all the brass floats with later ones and also swap bowls from another K0 set to be safe (I strongly dislike fuel leaks).  The front brake is assembled, but still needs a bleeding.  The Z1parts harness colors aren't an exact match on all the wires, so I got a couple wrong when I connected them in the bucket (front flashers ain't right yet).  Just a couple little things need to be done and I can go for the first ride!

« Last Edit: October 04, 2014, 12:00:52 PM by Greggo »

Offline toytuff

  • "watching the pinheads"
  • Old Timer
  • ******
  • Posts: 4,349
Re: Sandcast 4286 Project
« Reply #682 on: October 04, 2014, 07:30:38 AM »

I didn't say anything as I feel your pain. Case in point, Building the Dream or as I put it Living the Nightmare.  ;D

You know, I sold that bike in April and to this day I would not do another. The buyer was happy but not as much as I.  ;)

Looing great, fantastic job.

tt

Offline Greggo

  • Somebody's
  • Old Timer
  • ******
  • Posts: 4,164
  • Helmets Save Lives. Period.
Re: Sandcast 4286 Project
« Reply #683 on: October 04, 2014, 11:54:03 AM »

I didn't say anything as I feel your pain. Case in point, Building the Dream or as I put it Living the Nightmare.  ;D

You know, I sold that bike in April and to this day I would not do another. The buyer was happy but not as much as I.  ;)

Looing great, fantastic job.

tt

Never having restored one to this level (or that of your Dream/Nightmare ;D ) I'm learning the lessons you often hear, but don't fully understand until you experience.  I will never again buy a project missing so many hard-to-find parts.  I've also learned that I will probably never put this much effort into a 'regular' 750 unless I plan to keep it for a looong time, or prices go through the roof, which I don't think is happening any time soon.  And I've learned a whole lot of lessons about the procedure of putting one back together if I should should be so lucky to ever take another sandcast apart.  My next project will be either a '66-'69 Porsche 912 coupe, or a split-window VW bus or truck with a Porsche 356 motor.  It depends on what I can afford when this bike is done and sold, because 912 prices are going up up up - especially for nice ones like I want to start with.  But, it would be fun to build up a stripped-down 912 'Gruppe R' type car for daily driving if I can't find something nice enough to fully restore. 
« Last Edit: October 04, 2014, 11:55:58 AM by Greggo »

Offline Old Scrambler

  • My CB750K3 has been in 39 States & 5 Provinces
  • Old Timer
  • ******
  • Posts: 3,812
Re: Sandcast 4286 Project
« Reply #684 on: October 04, 2014, 12:40:53 PM »
Congrats on the build :) :) :) :) :)

Suggest you put a few miles on the motor and get the 'R's up for a stretch and then a good downshift to really check how badly the oil leak (or more leaks) will be.  The pucks are a sometime problem.............but more often on a new build, the cam-tower studs on the exhaust side will leak ............especially noticeable above 5,000 RPM.

My salt-flats motor was good until I revved it over 9,000..............but each time it leaked less and seems to have stopped.  My K3 did not leak for several thousand miles over 3-years............but now it weeps to a drop or three on every ride.

BTW......I think I have an original SILVER master-cylinder with the dished-lid in my garage. No idea if it works, but most need a rebuild.

For all that you needed, your build was on the rather FAST side of things ;D ;D ;D   
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2020 ROYAL ENFIELD Himalayan

Offline toytuff

  • "watching the pinheads"
  • Old Timer
  • ******
  • Posts: 4,349
Re: Sandcast 4286 Project
« Reply #685 on: October 07, 2014, 06:53:29 AM »
Understand the Porsche thing. Look at Ferrari. 400 percent increase in five years! (certain models)

tt

Offline Greggo

  • Somebody's
  • Old Timer
  • ******
  • Posts: 4,164
  • Helmets Save Lives. Period.
Re: Sandcast 4286 Project
« Reply #686 on: October 07, 2014, 10:47:52 AM »
Understand the Porsche thing. Look at Ferrari. 400 percent increase in five years! (certain models)

tt

If only my dad bought a few Dino coupes when we used to joke about how cheap they were, and that they weren't a 'real' Ferrari...But, he has owned some incredible cars over the years...he told me he never made mistakes buying them (price wise), the mistakes he made were selling them (timing).  He had a '56 speedster he sold in the '80s, a genuine early (can't remember the exact year) 911 'S' in red he sold maybe 13 years ago, and an incredibly original and clean '67 911 'L' he sold about ten years ago.  Had he kept those three cars he probably paid less than $40K total for, he would be sitting on well over half a million in Porsches.  The speedster had been crashed and paid for by insurance, so that was an understandable sale, and they weren't quarter-million dollar cars like they are now.  When he sold the 911's there was just no indication the market would skyrocket like it did.  The '67 was a British Green one that I got to drive for a day when he was working on my car...I think I was too young to appreciate it the driving experience, but it was definitely a cool car.  That's still the only Porsche I've driven, despite riding in so many.  If it was kept in similar condition it's a $100K car right now.

It's like all the guys on here that talk about their fond memories of the 750's when they were young, or other guys whose dads had a 750 when they were growing up.  I don't have a lot of feelings for 750's, but old Porsches really tug at my heartstrings. 
« Last Edit: October 07, 2014, 11:40:40 PM by Greggo »

Offline Greggo

  • Somebody's
  • Old Timer
  • ******
  • Posts: 4,164
  • Helmets Save Lives. Period.
Re: Sandcast 4286 Project
« Reply #687 on: October 07, 2014, 10:49:56 AM »
Congrats on the build :) :) :) :) :)

Suggest you put a few miles on the motor and get the 'R's up for a stretch and then a good downshift to really check how badly the oil leak (or more leaks) will be.  The pucks are a sometime problem.............but more often on a new build, the cam-tower studs on the exhaust side will leak ............especially noticeable above 5,000 RPM.

My salt-flats motor was good until I revved it over 9,000..............but each time it leaked less and seems to have stopped.  My K3 did not leak for several thousand miles over 3-years............but now it weeps to a drop or three on every ride.

BTW......I think I have an original SILVER master-cylinder with the dished-lid in my garage. No idea if it works, but most need a rebuild.

For all that you needed, your build was on the rather FAST side of things ;D ;D ;D   

Thanks OS!!  I thought the master cylinders were black on sandcasts?  I'll have to look again at some pics.  As far as the leak, my hope is that it goes away after putting some miles down, but I'm okay with whatever I gotta do I guess...I'm zen about it ;D

Offline kmb69

  • Master
  • *****
  • Posts: 2,041
Re: Sandcast 4286 Project
« Reply #688 on: October 07, 2014, 07:48:45 PM »
The master cylinders were black from the factory. They wear and/or fade to a kind of purplish, then silver when all of the original color is gone.

Offline Greggo

  • Somebody's
  • Old Timer
  • ******
  • Posts: 4,164
  • Helmets Save Lives. Period.
Re: Sandcast 4286 Project
« Reply #689 on: October 10, 2014, 07:10:03 PM »
Lots of time spent troubleshooting a bad 2-3 coil...they were brand new from Z1, so I'm contacting them to see if they'll send me a new one, or tell me to shove it.  I had another stock coil I swapped in and now it ROARS ;D


« Last Edit: October 12, 2014, 12:41:53 PM by Greggo »

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,447
  • Central Texas
Re: Sandcast 4286 Project
« Reply #690 on: October 10, 2014, 07:39:42 PM »
Sounds great! Knew you would get there.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,279
  • ROCK & ROLL
Re: Sandcast 4286 Project
« Reply #691 on: October 10, 2014, 07:42:30 PM »
240Z in the background there Greg, is she a stocker, I love them, I had a friend that owned one with a 350 Chev in it, sold it because he said he didn't want to die in it.... ;D   
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,447
  • Central Texas
Re: Sandcast 4286 Project
« Reply #692 on: October 10, 2014, 07:51:16 PM »
240Z in the background there Greg, is she a stocker, I love them, I had a friend that owned one with a 350 Chev in it, sold it because he said he didn't want to die in it.... ;D   

Yeah, I like those 240's too, my neighbor had a nice one.  And love the Targa too!!  Did you hit the Lotto, Greggo....Ha!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,279
  • ROCK & ROLL
Re: Sandcast 4286 Project
« Reply #693 on: October 10, 2014, 07:52:49 PM »
Looking at the wheels on the car on the hoist, Greg has an MG as well.... ;D  Nice collection mate...
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,447
  • Central Texas
Re: Sandcast 4286 Project
« Reply #694 on: October 10, 2014, 08:10:13 PM »
Looking at the wheels on the car on the hoist, Greg has an MG as well.... ;D  Nice collection mate...

Good eyes, Mate. It's a Midget....
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Greggo

  • Somebody's
  • Old Timer
  • ******
  • Posts: 4,164
  • Helmets Save Lives. Period.
Re: Sandcast 4286 Project
« Reply #695 on: October 10, 2014, 11:06:26 PM »
240Z in the background there Greg, is she a stocker, I love them, I had a friend that owned one with a 350 Chev in it, sold it because he said he didn't want to die in it.... ;D   

Bone stocker completely restored by my parents neighbor...it's beautiful inside and out.  Good eye on the Midget too ;D

The white '82 Carrera behind the Z is pretty nice.  There's a '72 911 'T' on the hoist over getting 930 Turbo fender flares and a monster 3.0L Carrera engine.  The cream colored VW Bug you can see peeking out has had maybe $25K work done to it as the original owner is restoring it...I waste a lot of time in that shop just looking, watching, and listening. 

Sounds great! Knew you would get there.

Thanks Stev-o!  It was nice to hear it roar on all four again...I want to know why that brand new coil went bad >:(   

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,447
  • Central Texas
Re: Sandcast 4286 Project
« Reply #696 on: October 11, 2014, 06:47:30 AM »
Electric parts can go bad at any time, ya never know. If you bought it from Z1parts.net, should have no prob getting a replacement.  I bought a petcock for my Z from them and it leaked, they sent a replacement no questions asked.  The owner is Tanner, got to know him last year when I as buying a lot of Z1 parts, petcock was the only issue. 
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
  • Really Old Timer ...
  • *******
  • Posts: 15,733
  • SOHC/4 Member #1235
Re: Sandcast 4286 Project
« Reply #697 on: October 11, 2014, 10:22:18 AM »
Electric parts can go bad at any time, ya never know. If you bought it from Z1parts.net, should have no prob getting a replacement.  I bought a petcock for my Z from them and it leaked, they sent a replacement no questions asked.  The owner is Tanner, got to know him last year when I as buying a lot of Z1 parts, petcock was the only issue.

Z1 Enterprises has GREAT customer service.  I bought a Dyna ignition from them about 2 years ago, then decided I wanted to use a Dyna 2000.  Since I had a receipt and the packaging was intact (unopened), they had no problem taking the one I bought back and upgrading me.
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 toytuff

  • "watching the pinheads"
  • Old Timer
  • ******
  • Posts: 4,349
Re: Sandcast 4286 Project
« Reply #698 on: October 12, 2014, 05:04:05 PM »
I have some MG stuff from one I had years ago. Not the Midget.

I'll dig around.

tt

Offline Greggo

  • Somebody's
  • Old Timer
  • ******
  • Posts: 4,164
  • Helmets Save Lives. Period.
Re: Sandcast 4286 Project
« Reply #699 on: October 16, 2014, 06:17:05 PM »
Took my first ride today!  I still need to tie up a couple loose ends (need screws for the fender stays), but it went pretty smoothly.  I went down to the CHP for my VIN verification and everything checked out.  One more trip to the DMV and I'll have a title.

Ride Report:

Carburetors need syncing
Clutch engagement needs adjustment
It sounds like a beast
I had smiles Ear-to-Ear :D



Seen in the shop today: Ron's (dad's shop partner) Lancia Fulvia 3...totally bad ass.



And for Retro ;)  (my dad says these cars are terrible ;D ;D )



« Last Edit: October 16, 2014, 10:26:59 PM by Greggo »