Topic: Sandcast 4286 Project

[markb]

Last year I bought one of those cheapie Harbor Freight soda blasters.

I apologize for hijacking the thread but which one did you buy?

[Greggo]

The collar and bushings are out of the swing arm. They weren't too bad, and came out with a good punch and brass hammer. All my primed parts, the frame, and the aluminum bits went off to the painter for gloss black and/or clear coat. I pulled my snap on cart out and filled it up with sandy parts. Nice to get that stuff outta my house!

[Don R]

Greggo, the guy I buy my Honda parts from has a sandcast with a chassis number under a thousand. In the 70's he threw a chain through the case on a trip in ohio and bought a used replacement engine there. It's like my 70 and your sandcast, it's been heavily part swapped. He was at the auction where I got mine but wouldn't bid against me. Not sure if it was friendship or depth of pocket.

Makes you wonder how many are still out there, looking ordinary and cheap.  I'm almost glad I don't have a much lower number bike for my first one.  It's a lot of project already without having to find all of those exceedingly rare parts.  Have you read through the ninety-some differences in the first few thousand sandies?  It's a daunting task to find some of those items.  But, I like having the early motor.

True, I'm glad I did the K0 diecast first. I learned a little about them the hard way before finding a nice survivor.  I've been looking for a diecast case for a long time, should have bought the blank one off Ebay a couple years ago. Someone here has one that's close but it's a 915 and in the correct chassis.

[Greggo]

Talked with the painter yesterday, and he was able to pick up all my parts from my pop's shop.  That included the frame, oil tank, battery tray, and a dozen or so smaller bits.  Discussed the gloss level, and the finish for the aluminum parts.  Probably won't be done for a couple weeks, so I'll start on the sandcast motor this weekend; it's just getting a simple refresh/repaint, so I'll tear the top end down for inspection and get going with that.

This is the most thorough restoration I've ever done...it's been intimidating having so many loose parts in different places, I'll be very happy to start putting things back together.  I'm shooting to be done in January. 

Still need to buy:

Spokes
Tires
Hand Conrols
Tach Cable (NLA from Honda)
Battery A Rubbers (NLA from Honda)


Work To Pay For:

Ruby Red Paint/Stripes
Re-Chrome Fenders/Front Rim
Zinc Plating For Fasteners


And, yes, I've kept track of how much I've spent so far

[MCRider]

Talked with the painter yesterday, and he was able to pick up all my parts from my pop's shop.  That included the frame, oil tank, battery tray, and a dozen or so smaller bits.  Discussed the gloss level, and the finish for the aluminum parts.  Probably won't be done for a couple weeks, so I'll start on the sandcast motor this weekend; it's just getting a simple refresh/repaint, so I'll tear the top end down for inspection and get going with that.

This is the most thorough restoration I've ever done...it's been intimidating having so many loose parts in different places, I'll be very happy to start putting things back together.  I'm shooting to be done in January. 

Still need to buy:

Spokes
Tires
Hand Conrols
Tach Cable (NLA from Honda)
Battery A Rubbers (NLA from Honda)


Work To Pay For:

Ruby Red Paint/Stripes
Re-Chrome Fenders/Front Rim
Zinc Plating For Fasteners


And, yes, I've kept track of how much I've spent so far

I got new battery rubbers from Yamiya. They probably have other stuff as well.

[Greggo]

Talked with the painter yesterday, and he was able to pick up all my parts from my pop's shop.  That included the frame, oil tank, battery tray, and a dozen or so smaller bits.  Discussed the gloss level, and the finish for the aluminum parts.  Probably won't be done for a couple weeks, so I'll start on the sandcast motor this weekend; it's just getting a simple refresh/repaint, so I'll tear the top end down for inspection and get going with that.

This is the most thorough restoration I've ever done...it's been intimidating having so many loose parts in different places, I'll be very happy to start putting things back together.  I'm shooting to be done in January. 

Still need to buy:

Spokes
Tires
Hand Conrols
Tach Cable (NLA from Honda)
Battery A Rubbers (NLA from Honda)


Work To Pay For:

Ruby Red Paint/Stripes
Re-Chrome Fenders/Front Rim
Zinc Plating For Fasteners


And, yes, I've kept track of how much I've spent so far

I got new battery rubbers from Yamiya. They probably have other stuff as well.

They do have them listed, but I haven't tried to purchase them yet...waiting to make one big order from them so I only pay shipping once.

The local Honda dealership let me order them, but then called me to say those two items (A battery rubber & tach cable) were NLA...

[MCRider]

Yeah, that's what I do too. I get things faster from them in Japan, than I do from next door in IL (Motogrid for ex.)

[Stev-o]

And, yes, I've kept track of how much I've spent so far

I'm not about to ask!  But might if/when you ever sell.  Seems like you've made smart buying decisions so far.  Some big ticket items (chrome and paint) coming up. 

[Greggo]

Baby steps today...couldn't get the motor into the shop because of space constraints...should be sorted out next week so I can tear into it.  So, instead I worked on freeing the lower bearing race from the bottom triple...got that done, and then gave the top triple three coats of satin black.




Took a look at the sandy motor, and found that the stator wiring had been chopped off, so there's some more fun to look forward to...I might end up stealing a bunch of parts from the K1 motor to use on the sandy...the wiring sheaths were in nice shape, so the stator and ground cable are probably getting transplanted.



I also studied a diagram at the shop, and learned how to solve problems

[Stev-o]

Love that flowsheet!

[Sgt.Pinback]

Took me 3 hours to read those 14 pages (and running into the garage to compare...) and learned so much!

Keep on!

[toytuff]

I need that flow sheet in my Shop! 

tt

[Greggo]

Took me 3 hours to read those 14 pages (and running into the garage to compare...) and learned so much!
Keep on!

I'm glad you enjoyed it so far!  It should be getting much better in the next two months.



I polished the fenders, and they cleaned up really, really nice.  They both have speckling from rust..the front is twice as bad as the rear, but the chrome polished up to a mirror finish.  It's gonna be a shame to re-chrome them, but it will be worth it to fix the bit of damage on the front cut...it's tweaked a bit, and there is a very small tear in the metal.

[Don R]

Looking good!

[Prospect]

Took me 3 hours to read those 14 pages (and running into the garage to compare...) and learned so much!
Keep on!

I'm glad you enjoyed it so far!  It should be getting much better in the next two months.



I polished the fenders, and they cleaned up really, really nice.  They both have speckling from rust..the front is twice as bad as the rear, but the chrome polished up to a mirror finish.  It's gonna be a shame to re-chrome them, but it will be worth it to fix the bit of damage on the front cut...it's tweaked a bit, and there is a very small tear in the metal.

What do you use to polish the chrome?

[Greggo]

I used turtle wax chrome polish...it was cheap, and it works well.

[Greggo]

Off with that lump's head I say!! 



The cam is definitely not stock, and per Hondaman's book, has more than .370 lift, because a fully backed out tappet adjuster wouldn't let me remove a few of the shafts, we had to rotate the motor until the certain lobes were free from their rockers...if you've read through Mark's book, you know what I'm talking about.  It has an 'O' at one end.



Everything did come out nicely, but the rockers are about halfway worn out, and the cam lobes had some wear as well.



I found a very nice surprise once I got the head off: the original sandcast cylinders!



The pistons are .50 over bores.

[Stev-o]

Looks good but what will you do about the cam?
And want to learn: How can you tell they are sandy cylinders?

[Greggo]

There's extra metal for that extra head bolt to thread into. I'll post up some comparison pics when I'm home tonight.

[Greggo]

Stev-o, here's a pic of a later cylinder, where you can see on the bottom side, the extra bolt hole, and the difference in the area surrounding it.  I'm lucky these are still on my motor...the last set that sold on ebay went for over $700.  I wish I wish I could find the right head before I button this thing up. 

[Stev-o]

Got it, thx for the info.

[Tews19]

Great info Gregg! I see you did your nails??

[Greggo]

Great info Gregg! I see you did your nails??

LoL!  Google pic

[Greggo]

Looks good but what will you do about the cam?

I don't have a K0 cam, but I do have a new webcam 41, so I guess I'll use that. 

The motor is extremely hard to turn over, even with the head off.  There was plenty of oil in the top end, so the problem wasn't up there.  With 2nd overbore pistons, this could be a higher mileage motor, and judging by the cam, it was ridden hard...I just hope it has the original 10mm crank, and it doesn't need replacing/extensive work.

[Stev-o]

Guessing you werent able to check compression. Are you going to tear down further?