Author Topic: Early Sandcast Found......  (Read 93386 times)

0 Members and 1 Guest are viewing this topic.

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1525 on: October 05, 2024, 07:01:27 PM »
Answer with a very high price ;)
That might keep buyers away ;D

I’m open to offers but they would need to be fairly ridiculous. I like this one a lot….

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1526 on: October 05, 2024, 07:02:10 PM »
Anybody that calls their bikes a “collection” probably doesn’t ride them…

Rode it around for the afternoon. Stuck very close to home, going in circles and sticking to paved roads. Didn’t really track the mileage, but I’ve put +100 miles on it. Borrowed” an oil pressure gauge from my K1 and it delivered nice, steady numbers (just like the K1). 65-70 psi cold, then +50 running at 4,000 rpm hot. Clutch and gearbox behaved perfectly. Really good news, because I only did the top end. Bottom has never been opened. Sadly, “Winterizing” is not far off!
« Last Edit: October 05, 2024, 07:20:24 PM by BenelliSEI »

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1527 on: October 05, 2024, 07:04:00 PM »
I just looked up where the Cobble Beach show is, and it's surprisingly close to where I'm at.  I'd need to get my passport of course, but that's easy enough to do.  It's definitely worth checking out one day!

If the weather cooperates (like it did this year) it’s well worth a visit. If you’re planning on staying overnight, book your accommodations 6 months in advance. Hotels in the area fill up well in early.
« Last Edit: October 05, 2024, 07:20:51 PM by BenelliSEI »

Offline grcamna2

  • Not a
  • Really Old Timer ...
  • *******
  • Posts: 15,138
  • I love to restore & travel. Keep'em Going Strong !
Re: Early Sandcast Found......
« Reply #1528 on: October 06, 2024, 01:34:44 AM »
Anybody that calls their bikes a “collection” probably doesn’t ride them…

Rode it around for the afternoon. Stuck very close to home, going in circles and sticking to paved roads. Didn’t really track the mileage, but I’ve put +100 miles on it. Borrowed” an oil pressure gauge from my K1 and it delivered nice, steady numbers (just like the K1). 65-70 psi cold, then +50 running at 4,000 rpm hot. Clutch and gearbox behaved perfectly. Really good news, because I only did the top end. Bottom has never been opened. Sadly, “Winterizing” is not far off!

Glad to hear you're enjoying riding that very nice K0 which you've restored John  ;)
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1529 on: October 09, 2024, 08:21:48 AM »
This is a great Forum, with a really nice bunch of people! Today my friend “Lash” sent me one more piece for this “puzzle”. This air box will need some work, but is a huge step to getting my project back to a true “survivor”. THANK-YOU DWAYNE!

Online newday777

  • Really Old Timer ...
  • *******
  • Posts: 5,252
  • Avatar is my 76 K6 in Colorado w/Cody on back 1980
Re: Early Sandcast Found......
« Reply #1530 on: October 09, 2024, 08:51:18 AM »
This is a great Forum, with a really nice bunch of people! Today my friend “Lash” sent me one more piece for this “puzzle”. This air box will need some work, but is a huge step to getting my project back to a true “survivor”. THANK-YOU DWAYNE!
A true Patina Survivor!!
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1531 on: October 09, 2024, 09:32:37 AM »
This is a great Forum, with a really nice bunch of people! Today my friend “Lash” sent me one more piece for this “puzzle”. This air box will need some work, but is a huge step to getting my project back to a true “survivor”. THANK-YOU DWAYNE!
A true Patina Survivor!!

Stu…. It will match the rest perfectly!

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 15,566
  • Bike almost back to the 70's 2015
Re: Early Sandcast Found......
« Reply #1532 on: October 09, 2024, 09:51:03 AM »
The rider need patina too, John. Maybe quit shaving before the bike shows? ;D
Or you prefer the NOS rider style? ;D
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1533 on: October 09, 2024, 10:10:25 AM »
The rider need patina too, John. Maybe quit shaving before the bike shows? ;D
Or you prefer the NOS rider style? ;D

Not much shaving going on here!

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 15,566
  • Bike almost back to the 70's 2015
Re: Early Sandcast Found......
« Reply #1534 on: October 09, 2024, 10:38:48 AM »
;D ;D ;D
"You meet the nicest people on a Honda"
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1535 on: October 09, 2024, 10:41:27 AM »
;D ;D ;D
"You meet the nicest people on a Honda"

So true!

Offline lash

  • Expert
  • ****
  • Posts: 761
Re: Early Sandcast Found......
« Reply #1536 on: October 10, 2024, 08:58:14 AM »
This is a great Forum, with a really nice bunch of people! Today my friend “Lash” sent me one more piece for this “puzzle”. This air box will need some work, but is a huge step to getting my project back to a true “survivor”. THANK-YOU DWAYNE!
All winter to get it fixed John!
Analog mind in a digital world..

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1537 on: October 10, 2024, 01:32:40 PM »
This is a great Forum, with a really nice bunch of people! Today my friend “Lash” sent me one more piece for this “puzzle”. This air box will need some work, but is a huge step to getting my project back to a true “survivor”. THANK-YOU DWAYNE!
All winter to get it fixed John!

That, the pipes, and the Rickman CR! Thanks, again!
« Last Edit: October 12, 2024, 07:36:24 AM by BenelliSEI »

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1538 on: October 16, 2024, 01:35:25 PM »
Had a good day in the shop. Started cleaning up the +50 year old air box. Lots of patina and cracks in both parts. The bottom needed less work so started with that. JBWeld “Plastic Repair” did one inside corner. It also has a long crack across the bottom which I’ll groove out and repair once the corner has cured….. slipped it in place  for a look. A lot of fading, but I think it will work.

The top has one part under the velocity stacks that is basically free of the rest. The stacks were as hard as the plastic, but using my paint stripper gun I warmed them up to just under melting. Using gloves, folded them up and they came out without causing more damage….
« Last Edit: October 16, 2024, 04:49:03 PM by BenelliSEI »

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1539 on: October 16, 2024, 01:44:30 PM »
While the airbox was setting up, started “winterizing”. Drained the carbs, dropped the bowls, floats and jets. Blew everything clean and dry and put it all back together. Battery is out and gave it a short charge.

In addition to the vintage air box, I’m going to work on the original pipes. The one on the lower right has a small hole on the underside, where the head pipe meets the muffler. It’s so low down that a small patch will be  virtually invisible. None of them have any dings, so hoping they will clean up well enough to use.

These few changes will take the bike back to +95% “original”.
« Last Edit: October 16, 2024, 04:45:22 PM by BenelliSEI »

Online newday777

  • Really Old Timer ...
  • *******
  • Posts: 5,252
  • Avatar is my 76 K6 in Colorado w/Cody on back 1980
Re: Early Sandcast Found......
« Reply #1540 on: October 16, 2024, 04:54:40 PM »
John
When you get the carbs back together inject Marvel Mystery Oil or 2 stroke oil into them to fill the bowls, to keep them wet over the winter, then drain them in the spring before running gas in them, it should fire right up. That's what I do.
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1541 on: October 16, 2024, 05:11:34 PM »
Stu….I always pull the lines off the petcock and plug the ends with a golf tee (incase the valve “drools” and fills the float bowls right back up). I’ll do what you suggest.
« Last Edit: October 17, 2024, 05:38:01 AM by BenelliSEI »

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1542 on: October 17, 2024, 10:32:09 AM »
Sorting some pictures today. This one clearly shows the characteristics of an early (#582) Sandcast engine. Much rougher finish than the later die cast parts…..

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1543 on: October 23, 2024, 06:23:50 AM »
Kevin…… Really appreciate your email. Here’s my preferred picture. John D.

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1544 on: October 23, 2024, 01:47:00 PM »
Working on the original air box. Anyone have a set of the bottom screws (2)?

Offline lash

  • Expert
  • ****
  • Posts: 761
Re: Early Sandcast Found......
« Reply #1545 on: October 23, 2024, 01:52:07 PM »
 ;D
Analog mind in a digital world..

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1546 on: October 23, 2024, 04:55:56 PM »
;D

Don’t suppose you have an “extra set”?

Offline lash

  • Expert
  • ****
  • Posts: 761
Re: Early Sandcast Found......
« Reply #1547 on: October 23, 2024, 05:26:05 PM »
I think so,will check in the morning
Analog mind in a digital world..

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,904
  • 1969 cb750
Re: Early Sandcast Found......
« Reply #1548 on: October 24, 2024, 05:51:44 AM »
I think so,will check in the morning

Great and no rush.

Offline MauiK3

  • A K3 is saved
  • Old Timer
  • ******
  • Posts: 4,277
  • Old guy
Re: Early Sandcast Found......
« Reply #1549 on: October 29, 2024, 07:34:22 AM »
Are you keeping it? (the Sandy)
1973 CB 750 K3
10/72 build Z1 Kawasaki