Author Topic: Early Sandcast Found......  (Read 89356 times)

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Online BenelliSEI

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Re: Early Sandcast Found......
« Reply #800 on: December 08, 2022, 05:12:14 am »
I may just take a run at them before the cleaning.

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Re: Early Sandcast Found......
« Reply #801 on: December 15, 2022, 09:14:31 am »
Dropped the two main parts (barrels and head) at Rocket Performance, Whitby, Ont., for vapour blasting. Examined other stuff he’s done. Amazing results. He’s busy, so may be the New Year, before they are done. I’ll do pistons and rings in the meantime, clean valve train and general prep. Not in any rush....


His results looked so great, I may dismantle the carbs again, and get him to do the main bodies, tops and float bowls. I got them very clean in my ultra sonic tank, but they still show “staining”. We’ll see.
« Last Edit: January 16, 2023, 09:25:23 am by BenelliSEI »

Offline MauiK3

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Re: Early Sandcast Found......
« Reply #802 on: December 15, 2022, 01:55:11 pm »
If there is any rust showing on the outside of the pipes I bet the amount on the inside is much greater. Sad to say.
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Offline Stev-o

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Re: Early Sandcast Found......
« Reply #803 on: December 15, 2022, 02:08:04 pm »
Quote
I may dismantle the cars again, and get him to do the main bodies, tops and float bowls. I got them very clean in my ultra sonic tank, but they still show “staining”. We’ll see.


Hey John...I had my H2 carbs vapor blasted a few years ago and they still look great.  IMO, it is by far the best finish you can apply to aluminum...


'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline SOHC4 Cafe Racer Fan

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Re: Early Sandcast Found......
« Reply #804 on: December 15, 2022, 07:36:45 pm »
Quote
I may dismantle the cars again, and get him to do the main bodies, tops and float bowls. I got them very clean in my ultra sonic tank, but they still show “staining”. We’ll see.


Hey John...I had my H2 carbs vapor blasted a few years ago and they still look great.  IMO, it is by far the best finish you can apply to aluminum...




I agree.  I had mine vapor blasted and then had matte black cerakote applied to the bodies for some contrast to the engine.

IMG_0116 by Donald Leonhardt, on Flickr
« Last Edit: December 16, 2022, 08:53:29 am by SOHC4 Cafe Racer Fan »
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

Online BenelliSEI

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Re: Early Sandcast Found......
« Reply #805 on: December 16, 2022, 06:26:27 am »
If there is any rust showing on the outside of the pipes I bet the amount on the inside is much greater. Sad to say.


??????  What pipes?

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Re: Early Sandcast Found......
« Reply #806 on: December 16, 2022, 06:27:41 am »
Quote
I may dismantle the cars again, and get him to do the main bodies, tops and float bowls. I got them very clean in my ultra sonic tank, but they still show “staining”. We’ll see.


Hey John...I had my H2 carbs vapor blasted a few years ago and they still look great.  IMO, it is by far the best finish you can apply to aluminum...





Wow..... will definitely take mine apar, while waiting. That looks even better than I expected.

Offline SOHC4 Cafe Racer Fan

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Re: Early Sandcast Found......
« Reply #807 on: December 16, 2022, 08:52:45 am »
Here are my carbs after vapor blasting, and then after applying cerakote and assembly.  The peened finish after blasting retains its finish.  I wanted mine impervious to gas, so I had them cerakoted.
[Those aren't my hands.]

Untitled by Donald Leonhardt, on Flickr

Untitled by Donald Leonhardt, on Flickr

Untitled by Donald Leonhardt, on Flickr
« Last Edit: December 16, 2022, 08:55:28 am by SOHC4 Cafe Racer Fan »
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 Stev-o

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Re: Early Sandcast Found......
« Reply #808 on: December 16, 2022, 11:05:48 am »

  I wanted mine impervious to gas, so I had them cerakoted.
[Those aren't my hands.]

Funny you should state that Don, was thinking you've been working with your hands too much!

Your carbs look great, can you plz explain the Cerakote process?  Thx
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline SOHC4 Cafe Racer Fan

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Re: Early Sandcast Found......
« Reply #809 on: December 16, 2022, 01:21:58 pm »

  I wanted mine impervious to gas, so I had them cerakoted.
[Those aren't my hands.]

Funny you should state that Don, was thinking you've been working with your hands too much!

Your carbs look great, can you plz explain the Cerakote process?  Thx

Cerakote is a ceramic coating applied with a paint gun.  It requires slightly more prep than paint and air cures.  Once cured, it extremely durable/scratch resistant and nearly stain proof (especially as to gas/oil/petroleum products). There are numerous colors available.  It has great heat dispersion qualities so it's safe on engines and exhaust components. It cures to very thin thicknesses, so not much is needed. It is used for guns as well (including slides which endure heat and friction).
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

Online BenelliSEI

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Re: Early Sandcast Found......
« Reply #810 on: December 16, 2022, 04:30:45 pm »

  I wanted mine impervious to gas, so I had them cerakoted.
[Those aren't my hands.]

Funny you should state that Don, was thinking you've been working with your hands too much!

Your carbs look great, can you plz explain the Cerakote process?  Thx

Cerakote is a ceramic coating applied with a paint gun.  It requires slightly more prep than paint and air cures.  Once cured, it extremely durable/scratch resistant and nearly stain proof (especially as to gas/oil/petroleum products). There are numerous colors available.  It has great heat dispersion qualities so it's safe on engines and exhaust components. It cures to very thin thicknesses, so not much is needed. It is used for guns as well (including slides which endure heat and friction).

Don..... thanks for the details! I will investigate. How hard is the gun cleanup afterwards?

Offline SOHC4 Cafe Racer Fan

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Re: Early Sandcast Found......
« Reply #811 on: December 19, 2022, 08:16:55 am »

  I wanted mine impervious to gas, so I had them cerakoted.
[Those aren't my hands.]

Funny you should state that Don, was thinking you've been working with your hands too much!

Your carbs look great, can you plz explain the Cerakote process?  Thx

Cerakote is a ceramic coating applied with a paint gun.  It requires slightly more prep than paint and air cures.  Once cured, it extremely durable/scratch resistant and nearly stain proof (especially as to gas/oil/petroleum products). There are numerous colors available.  It has great heat dispersion qualities so it's safe on engines and exhaust components. It cures to very thin thicknesses, so not much is needed. It is used for guns as well (including slides which endure heat and friction).

Don..... thanks for the details! I will investigate. How hard is the gun cleanup afterwards?

I have not shot it myself.  My buddy does it.  He says that clean up is similar to paint but you have to be thorough.
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

Online BenelliSEI

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Re: Early Sandcast Found......
« Reply #812 on: December 31, 2022, 06:08:07 am »
Last post for 2022. Received a nice note via “snail mail” from Mark P. today. It included the correct head gasket “0” rings I will need for this project. Very generous and many thanks, Mark!
Happy New Year all!

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Re: Early Sandcast Found......
« Reply #813 on: January 11, 2023, 05:27:45 pm »
Stripped the chrome, cap and badges off the s/c tank today and took it to a paintless dent remover that has an excellent reputation. It has a few dents, but no cracks in the paint. If he can “save” it, I want to polish it up and leave truly original. Fingers crossed!

Offline PeWe

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Re: Early Sandcast Found......
« Reply #814 on: January 11, 2023, 08:39:28 pm »
That look what a dent(ist) can fix without fillings.
Original must increase value, right?
Tank has a story to tell, what did it see 1969?
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

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Re: Early Sandcast Found......
« Reply #815 on: January 12, 2023, 06:16:17 am »
That look what a dent(ist) can fix without fillings.
Original must increase value, right?
Tank has a story to tell, what did it see 1969?

PeWe..... apparently it’s a very early “17 litre, double wrinkle tank” . Built in May of 1969.

Offline PeWe

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Re: Early Sandcast Found......
« Reply #816 on: January 12, 2023, 08:01:33 am »
A good detail for initiated collectors.
Double value then! ;)
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

Online BenelliSEI

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Re: Early Sandcast Found......
« Reply #817 on: January 12, 2023, 09:29:29 am »
A good detail for initiated collectors.
Double value then! ;)

Most importantly it’s original to the motorcycle. Only the carbs, airbox and some switches were missing (day 1 photo attached). I’m trying to restore, rebuild, reuse as much as possible.

Waiting for a clean cylinder head from vapour blasting. Cleaned up all the valves today.....
« Last Edit: January 13, 2023, 05:23:04 am by BenelliSEI »

Offline Terry in Australia

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Re: Early Sandcast Found......
« Reply #818 on: January 13, 2023, 01:21:04 am »
I'll be interested to see how the PDR works John. The tank on my K0 is off an early K1, but as Mark Paris has mentioned previously, K1and later tanks don't fit K0's well, so I want to have the tank on my K2 "Bitsa" which is an original K0 tank repaired (I'll have it repainted as the paint is pretty bad) and put on my K0, and put the tank that's on my K0, on a future K1 build. ;D

K2 Bitsa Thursday 5 Jan 2023 2 by Terry Prendergast, on Flickr
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

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Re: Early Sandcast Found......
« Reply #819 on: January 13, 2023, 05:20:11 am »
I'll be interested to see how the PDR works John. The tank on my K0 is off an early K1, but as Mark Paris has mentioned previously, K1and later tanks don't fit K0's well, so I want to have the tank on my K2 "Bitsa" which is an original K0 tank repaired (I'll have it repainted as the paint is pretty bad) and put on my K0, and put the tank that's on my K0, on a future K1 build. ;D

K2 Bitsa Thursday 5 Jan 2023 2 by Terry Prendergast, on Flickr

Understood.... This “wrinkle tank” is the only one I have with the extra room for the 4-1 cables, where the adjusters come out of the carb tops. My 1970 K0 had a brand new, factory Honda K1 tank with out those cut outs and it never sat down quite correctly...
« Last Edit: January 13, 2023, 11:35:14 am by BenelliSEI »

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Re: Early Sandcast Found......
« Reply #820 on: January 13, 2023, 01:19:30 pm »
Keeping valves and springs organized.

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Re: Early Sandcast Found......
« Reply #821 on: January 13, 2023, 01:20:56 pm »
Valve cleanup station. 3M Green Scotchbrite, varsol, and the plastic tube protects the valve stem in the drill press chuck.
« Last Edit: January 14, 2023, 06:08:26 pm by BenelliSEI »

Offline Terry in Australia

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Re: Early Sandcast Found......
« Reply #822 on: January 14, 2023, 12:06:21 am »
I'll be interested to see how the PDR works John. The tank on my K0 is off an early K1, but as Mark Paris has mentioned previously, K1and later tanks don't fit K0's well, so I want to have the tank on my K2 "Bitsa" which is an original K0 tank repaired (I'll have it repainted as the paint is pretty bad) and put on my K0, and put the tank that's on my K0, on a future K1 build. ;D

K2 Bitsa Thursday 5 Jan 2023 2 by Terry Prendergast, on Flickr

Understood.... This “wrinkle tank” is the only one I have with the extra room for the 4-1 cables, where the adjusters come out of the carb tops. My 1970 K0 had a brand new, factory Honda K1 tank with out those cut outs and it never sat down quite correctly...

Yep, I think it was Frank who said that there were at least 3 (maybe 4?) K0 tanks, the first ones didn't have those "dents" for the the carb tops, then the next ones had just two dents, then the last wrinkle tanks had 4. Mine is a January 1970 K0 so didn't have a wrinkle tank, so I sold the "4 dent" wrinkle tank that I'd bought for it. If I can get my 1970 "Non Wrinkle" tank repaired so it looks like new, I'll put it on my K0 and free up that K1 tank for my K1 build, when I get around to it. ;D 
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline newday777

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Re: Early Sandcast Found......
« Reply #823 on: January 14, 2023, 04:17:54 am »
Keeping valves and springs organized.

I forgot about doing this from years ago and I like the cleanup station too. Thanks 😊
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

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Re: Early Sandcast Found......
« Reply #824 on: January 14, 2023, 06:21:39 am »
Keeping valves and springs organized.

I forgot about doing this from years ago and I like the cleanup station too. Thanks 😊

It’s “old school”, but works well. The 2X4 for the LEXUS race car is 2’ long (24 valves)!