Author Topic: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod  (Read 34975 times)

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Offline SOHC4 Cafe Racer Fan

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #150 on: February 17, 2017, 06:36:14 AM »
Wow, Nils! Blown away again!

I just saw that Carpy is getting into vapor blasting. Although more local, I'd still send out to Nils given his track record of performance and customer service.
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 slikwilli420

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #151 on: February 17, 2017, 06:48:50 AM »
Wow, Nils! Blown away again!

I just saw that Carpy is getting into vapor blasting. Although more local, I'd still send out to Nils given his track record of performance and customer service.

But Don, Carpy invented the cafe racer movement in America and we all owe him everything for that.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline joeyvans

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #152 on: February 17, 2017, 06:48:55 AM »
Customer Service is a lost art these days. For most things, I will happily pay more for good customer service!
1976 CB550 K2
Non-SOHC4 - 1974 CB450 K7
Non-SOHC4 - 1996 VFR750F

"No matter how much you shake and dance... the last three drops go in your pants."

Offline BLAC

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #153 on: February 17, 2017, 09:11:52 AM »
Wow, Nils! Blown away again!
 
I just saw that Carpy is getting into vapor blasting. Although more local, I'd still send out to Nils given his track record of performance and customer service.

But Don, Carpy invented the cafe racer movement in America and we all owe him everything for that.

 ;D ;D
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline MRieck

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #154 on: February 17, 2017, 09:33:27 AM »
Wow, Nils! Blown away again!

I just saw that Carpy is getting into vapor blasting. Although more local, I'd still send out to Nils given his track record of performance and customer service.

But Don, Carpy invented the cafe racer movement in America and we all owe him everything for that.
Carpy invented vapor blasting. ;D
Owner of the "Million Dollar CB"

Offline Ericcb750

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #155 on: February 17, 2017, 09:45:06 AM »
Nils has been the best Since I first contacted him about this project. He's always been helpful even creating and sending me a video about the "dykes" and removing my kickstarter pin....ha-ha.

Always quick to reply and encouraging, and the guys work is just absolutely flawless. I will recommend anyone to go to him, I can't wait to see those Koni's when they're done....with the aluminum bodies all vapor blasted and the black springs.... going to be sick.

I've never dealt with Carpy on anything., seems like he knows his stuff but alot of his stuff is just not my style.
1978 CB750K
1978 CB750F super sport
2005 Sportster 1208

Offline joeyvans

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #156 on: February 17, 2017, 10:05:18 AM »
alot of his stuff is just not my style.

As in, you don't wear a pompadour, rolled short sleeves and jeans?
1976 CB550 K2
Non-SOHC4 - 1974 CB450 K7
Non-SOHC4 - 1996 VFR750F

"No matter how much you shake and dance... the last three drops go in your pants."

Offline BLAC

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #157 on: February 17, 2017, 10:28:39 AM »
Nils has been the best Since I first contacted him about this project. He's always been helpful even creating and sending me a video about the "dykes" and removing my kickstarter pin....ha-ha.

Always quick to reply and encouraging, and the guys work is just absolutely flawless. I will recommend anyone to go to him, I can't wait to see those Koni's when they're done....with the aluminum bodies all vapor blasted and the black springs.... going to be sick.

I've never dealt with Carpy on anything., seems like he knows his stuff but alot of his stuff is just not my style.

I just imagine Carpy walks around snapping his fingers asking people if they are Sharks or Jets.
« Last Edit: February 17, 2017, 11:47:29 AM by BLAC »
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline Ericcb750

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #158 on: February 17, 2017, 11:33:56 AM »
Alright so I do have a serious question for all you fellas...  For those of you who have taken a motor down this far, Did you replace any of the bearings on the main shaft/counter shaft? Or did you just inspect them, clean them a little bit and slap them back in?

Basically, i had a tough time getting to one of the counter shaft bearings (in the middle of the case), I didn't want to damage anything so Nils removed it with a bearing puller. He recommended getting a new one, which got me thinking...Should I be replacing those ? That's the only part of the engine that i haven't really thought about....

All the other parts that are going back in have been inspected and are perfect, And are these things still available?
Probably pretty expensive if so. But let me know for those of you that have done this.... THanks
1978 CB750K
1978 CB750F super sport
2005 Sportster 1208

Offline BLAC

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #159 on: February 17, 2017, 11:48:59 AM »
I don't know about the 750's but they were not expensive and I did buy new ones for my 550. 

The stock ones seemed fine, but for the $20 or so I figured what the hell.

If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline Davez134

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #160 on: February 17, 2017, 12:00:29 PM »
I reused mine as they seemed in perfect condition as far as I could tell. As stated its cheap enough insurance to replace them, but I personally did not have a need to.

Offline slikwilli420

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #161 on: February 17, 2017, 12:04:59 PM »
Alright so I do have a serious question for all you fellas...  For those of you who have taken a motor down this far, Did you replace any of the bearings on the main shaft/counter shaft? Or did you just inspect them, clean them a little bit and slap them back in?

Basically, i had a tough time getting to one of the counter shaft bearings (in the middle of the case), I didn't want to damage anything so Nils removed it with a bearing puller. He recommended getting a new one, which got me thinking...Should I be replacing those ? That's the only part of the engine that i haven't really thought about....

All the other parts that are going back in have been inspected and are perfect, And are these things still available?
Probably pretty expensive if so. But let me know for those of you that have done this.... THanks

Im debating this myself on a race motor I am doing. I am taking the slow burn on getting it done so I will probably do them, but I wans't originally planning on it. The full set for the 750 is almost $250 from CMSNL. One bearing is like $65 so its hard for me to swallow but in the grand scheme you probably won't even notice the money is gone.

Generally speaking for bearings, I have gathered that if they don't "click" when you spin them and they don't have excessive side play, you are good. Flush them out good and give this a spin in a quiet area and listen, if it sounds good, it probably is.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline SOHC4 Cafe Racer Fan

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #162 on: February 17, 2017, 02:11:48 PM »
I reused mine as they seemed in perfect condition as far as I could tell. As stated its cheap enough insurance to replace them, but I personally did not have a need to.

I reused mine, too.  With a 650 motor they are less readily available.
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 MRieck

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #163 on: February 17, 2017, 02:43:23 PM »
Nils has been the best Since I first contacted him about this project. He's always been helpful even creating and sending me a video about the "dykes" and removing my kickstarter pin....ha-ha.

Always quick to reply and encouraging, and the guys work is just absolutely flawless. I will recommend anyone to go to him, I can't wait to see those Koni's when they're done....with the aluminum bodies all vapor blasted and the black springs.... going to be sick.

I've never dealt with Carpy on anything., seems like he knows his stuff but alot of his stuff is just not my style.
I have some new pins in stock ;D
Owner of the "Million Dollar CB"

Online RAFster122s

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #164 on: February 18, 2017, 01:42:07 AM »
Wow, Nils! Blown away again!

I just saw that Carpy is getting into vapor blasting. Although more local, I'd still send out to Nils given his track record of performance and customer service.

But Don, Carpy invented the cafe racer movement in America and we all owe him everything for that.
Carpy invented vapor blasting. ;D

Carpy invented Al Gore who invented the internet...ain't it great!!
;D ;D ;)
David- back in the desert SW!

Offline Ericcb750

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #165 on: February 21, 2017, 11:48:50 AM »
Christmas in February looks like it will be coming tomorrow!!!!  Looks like most of my goodies will be coming home . I'll post up some photos of the kaboodle when I get them.

What an awesome guy Nils has been to work with, Could not be happier with the way this stuff turned out.....and I haven't even seen it yet!!!!!
1978 CB750K
1978 CB750F super sport
2005 Sportster 1208

Offline SOHC4 Cafe Racer Fan

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #166 on: February 21, 2017, 11:52:23 AM »
You'll be tasting the rainbow of fruit flavor aka Skittles soon.  Post copious amounts of photos of the "caboodle."
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 BLAC

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #167 on: February 21, 2017, 12:54:14 PM »
Im tasting the rainbow at my desk right now  8)
If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Offline Ruckus2115

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #168 on: February 22, 2017, 08:10:30 AM »
Just wow with that cleaning.  Looks amazing.  I think I might need to send my stuff down to him as well. With the carbs did you send them down there whole and he broke them down? or did you break them down? 
Excuse me for my dumb questions....but if you do plan to paint it or thermal coat the cases, heads, and jugs....do you do that prior to rebuilding everything?  Do you have the loose steps in your head for the rebuild?
for example..
get the parts back
get the cases painted/thermal coated
reassemble the cases
get the jugs bored and then painted?
rebuild the heads and then painted?

I am just curious as to what your overall steps are.  I am in a similar situation with breaking down a '76 750F.  Just trying to time everything right on my end

Thank you Calj737 for the thermal coating pics.  I would love to find someone local to me able to do this sort of process.  I really do not want to paint my engine...would rather have it powder coated or thermal coated...



Offline Ericcb750

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #169 on: February 23, 2017, 03:32:26 AM »
Hey Ruckus,
   Glad you like the photos, and I got all my parts back last night.....They're 10x better in person, just absolutely amazing work on Nils' part....Super fast turn around time and he's been a Huge help along the way.

As far as the carbs, I tore them completely down when I sent out all the parts to him, so every part inside was broken down....as far as the linkage, I sent that and the choke linkage out there assembled.....There are some reasons you don't want to Completely dis-assemble the carb linkage (little stud in the rod, and something else that I can't remember. Theres really no reason to 100% break down the stay plate/linkage too. He cleaned that up as well and it's beautiful

I'm thinking after Cal's suggestion, to look into the thermal coating for my cylinders (maybe the head too). But as far as the cases, I'm going to run them for a while as they are....The finish is beautiful and with a little work (Cleaning and such) Nils has assured me they can be kept up very nicely. Maybe down the road if they're nasty (talking years from now) I'll have them cleaned up again or painted...

I have gone over the motor build 10 times already on all my assembly.....First step is going to be going through the cylinder stud holes with a "thread chaser/repair" tool per Nils' recommendation.... The threads are perfect as is but just to make sure as I'm going to be installing the APE HD studs and Main bearing Studs as well.

I have all the bearings for the rods and crank (which was balanced by Mike Rieck), so that will be sweet. I am going to look into getting new bearings for the trans while i'm in there.... The bearings that came out are literally perfect so I'm going to keep them for a future project....

Let me know if you have any questions on anything, I have 100% of the parts for the new motor (bolt kits, bearings, cam, tensioners, new HD Chains, etc) so I'm good to go.

There is an amazing thread on the forum by "BrandEn" about re-building a "leak free" top end , I would check it out as he has some awesome info/tips in there. Best of luck on the project. Give me a shout with Questions.
1978 CB750K
1978 CB750F super sport
2005 Sportster 1208

Offline BLAC

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If you can't fix it with a hammer, it's an electrical problem... If it's an electrical problem, it's Cal's problem.

*2005 Yamaha R6 (sold)
*2014 Ducati Streetfighter 848 (sold)
*2014 BMW S1000RR (sold)
*2010 Ducati Streetfighter S
*1978 CB550 Restomod Build
*1974 CB550 Monoshock build
http://forums.sohc4.net/index.php/topic,154614.0.html

Online RAFster122s

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #171 on: February 24, 2017, 12:21:56 AM »
Tasting the rainbow at work at your desk!?  :D ;D
David- back in the desert SW!

Offline Ericcb750

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #172 on: February 28, 2017, 10:46:14 AM »
I'd taste that rainbow all day and night. Haha.  I know I'm slacking on the photos fellas,.. here's a few... id put these up in a cleanest set of cb750 carbs contest... I have all brand new internals for theses babies too fresh from Japan.... Honda needles and needle jets, mains - 120, pilots 40, float valves and seats, all new Honda rubbers, etc.

With the stay plate and choke linkage all cleaned up.... there will literally be brand new!!! Wohoo!

1978 CB750K
1978 CB750F super sport
2005 Sportster 1208

Offline Ruckus2115

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #173 on: March 01, 2017, 06:19:39 PM »
Carbs look beautiful. So I talked with a thermal coater locally and he said even if I did send parts to get vapor blasted that he would still want to clean them and prep them to take the thermal coating. Sounds like I do plan to thermal coat my cases, block, and head. Where'd you source your carb parts for the rebuild? I am shocked how good looking they are.


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Offline Jnel

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Re: 1978 CB750 - Re-born a 836cc Wiseco JMR Ported Hot Rod
« Reply #174 on: March 02, 2017, 04:35:46 AM »
This stuff looks amazing.  He will get some business from me. Really ... i mean woooooo. 👍

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