Author Topic: 1975 cb750F Resto.  (Read 3133 times)

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Offline BenelliSEI

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1975 cb750F Resto.
« on: June 26, 2019, 02:18:08 PM »
I wrote this article for the CVMG News Letter a few months ago, thought you guys might enjoy it too.......

I purchased my 1975 Honda cb750F1 from Toronto CVMG Member Nick A. Having too much time on my Benelli 750 SEI Distraction, I wanted another Honda. Nick got the bike from a third CVMG member, “Bruce”. Nice to know it’s been owned by people that care for their machines. At some point, in the recent past, the bike was down to a bare frame. Paint on the chassis, running gear, and tank/bodywork was completed by John Connery Paint. The frame was prepped, primed and painted gloss black (as original) and the tank and seat cowl are a spectacular “Sunrise Flake Orange”. The correct factory stripes and decals were applied flawlessly and then beautifully clear coated. Kudos to Connery. As an aside, I discovered he had painted my Benelli too.
           Nick had the engine out, freshened the top end and applied a fresh coat of silver paint. He polished the alloy covers and bolted up a beautiful, stainless Delkevic exhaust. Then Hindle fitted a stylish, stainless muffler, that really compliments the overall appearance. The original 4-1 Honda System is fairly massive, and virtually unobtainable (trades for stupid money), so I’ve decided to keep it the way it is.  He also built an amazing, new set of side covers, using A 3D PRINTER! Connery applied the correct matt black finish. Altogether a great looking bike. The attached photo was what caught my eye on KIJIJI. Nick was anxious to move on to another project, so I picked up the bike in late Fall of 2018.
         I rode the motorcycle for a quick 30-40 kilometres blast, and concluded it ran as well as it looks. The exhaust system is relatively quiet, but has a nice “rip” when pushed....... I noted a few changes I wanted to make, thinking it would take a few days. As usual, it morphed into a bit more.
         First item was the brakes. They seemed a bit softer than my other Hondas. The 1975 cb750F0 was the first year of this model. Changes from the more touring cb750K included a rear disc brake. Faced with a totally seized rear master cylinder, Nick had used a smaller, “universal”  aftermarket type. A little research and discovered the “F” used the same master as a GL1000 Gold Wing. Quick advert in the CVMG News, and I had one a few days later. Fresh pushrod, seals and boot, it bolted right in. At the front, the brake caliper was weeping. A new seal and pads put it right. The master cylinder got a good cleaning (no parts required) and a fresh coat of paint. Apex Brakes made me a nice set of new, black hoses. Brakes are improved 100%.
           The bike was on a set of older, mismatched tires and the rear was looking especially sad. When I pulled it off,  I discovered that the back rim looked good, but was completely rotten. It actually folded inwards as I pried off the old tire. Polished up the hub and laced in new spokes, to a new rim. It looked so good, I tore apart the front, cleaned everything and added a new set of spokes to that end too. Most of my replica parts come from <vintgecb750.com>. A great, Ontario based company. They keep a huge inventory and my orders arrive complete, and next day. Can’t say enough about them. While the front was in the air, I polished up the fork legs and replaced the seals. I had a front fender in my inventory that looked better than the original, so that went on too. I have bins of the correct Honda hardware (too many past projects) so I replaced 99% of the old fasteners with the correct, new ones. Nothing beats a shiny bolt.
             Right at the start, I’d removed all the bodywork and put it safely away. I noticed a broken front ignition coil mount, when inspecting a new wiring harness that Nick installed. While the coils were on the bench (thanks JB Weld), I recalled a very cool, brand new “C5 Electronic Ignition Kit” that came with another purchase. It’s an optically triggered system and comes with a weird set of coils. I fooled around a bit, fabricated a mounting system (no modifications to the bike) and decided to tackle it next. Rather than modify the new harness, I built a completely separate loom for the C5. (never burn any bridges, and leave an escape route). Several days later, it was all installed and working beautifully. Stripping down the area above the engine lead to a few other projects. Float bowl breather hoses are no longer missing, fuel lines and filter are new, the airbox came out, cleaned and polished. Meguirs’ make a great product called “Back to Black”. Available at Canadian Tire, it is designed for automotive black bumpers and trim. A few coats really brings old plastic parts back to life. To get a degree wheel on the crank (for the ignition installation) I had to pull off the chain, gearbox and stator covers (more polish, new gaskets and seals). While the degree wheel was in place, may as well adjust valve clearances and cam chain tension. All this to replace a broken coil mount!
             Also changed some turn signals and stalks for a shinier set I had stashed away, repaired ground wires and some other details. One thing leads to another...... The speedo and tach bases had lost much of their chrome and wouldn’t you know it? Honda still sells them. $126 + tax and the front end is a bit shinier. Now I’m thinking the instruments need cleaner faces and a coat of black paint!
           Yesterday I screwed in the adaptor pipes to hook up my carb synchronizing tool. The next time it’s warm enough to open up the shop door, that will get done.  Theoretically, that’s all that’s left to do. BUT, I could replace the seat cover before that tiny crack turn into a tear. The oil filter housing and centre stand both need a good scrub, maybe some paint? Probably needs and oil/filter change?  Who says winter is long?
      P.S. carbs sync’d and I did replace the seat cover. Sweet Ride!
« Last Edit: June 26, 2019, 04:49:31 PM by BenelliSEI »

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1975 cb750F Resto.
« Reply #1 on: June 26, 2019, 02:43:34 PM »
Nice looking F0  ;)
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Sigmund

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Re: 1975 cb750F Resto.
« Reply #2 on: June 26, 2019, 03:08:30 PM »
Love the orange. Nice build.

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Offline BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #3 on: June 27, 2019, 06:24:23 AM »
Thanks for the comments,.Few more pictures.......

Offline SOHC4 Cafe Racer Fan

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Re: 1975 cb750F Resto.
« Reply #4 on: June 27, 2019, 08:49:24 AM »
Hot damn. Looks like another candidate for BOTM.
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: 1975 cb750F Resto.
« Reply #5 on: June 27, 2019, 09:51:29 AM »
 Hard to believe my F looked pretty much like that at one point.....almost 40 years ago. ;D
Owner of the "Million Dollar CB"

Offline PeWe

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Re: 1975 cb750F Resto.
« Reply #6 on: June 27, 2019, 12:42:31 PM »
Really good looking F bike!
That photo will make people to find one for a restore.
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

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Re: 1975 cb750F Resto.
« Reply #7 on: June 27, 2019, 01:00:23 PM »
The paint was so good on this one, I just couldn’t resist!

Online ofreen

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Re: 1975 cb750F Resto.
« Reply #8 on: June 27, 2019, 10:29:11 PM »
I could be accused of bias, I guess, but looking at those photos, it is hard to understand why so many consider the F to be ugly.
Greg
'75 CB750F

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Offline SOHC4 Cafe Racer Fan

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Re: 1975 cb750F Resto.
« Reply #9 on: June 27, 2019, 10:41:34 PM »
BenelliSEI,

This bike has been nominated and seconded for Bike of the Month.  Please post that you "accept" the nomination in the following nomination thread:  http://forums.sohc4.net/index.php/topic,176614.0.html
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 BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #10 on: June 28, 2019, 05:41:17 AM »
Thank you! Accepted.

Offline PeWe

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Re: 1975 cb750F Resto.
« Reply #11 on: June 30, 2019, 09:32:50 PM »
I saw another F bike in candy red like a CBX1000 in another thread, also really good looking.
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 andy750

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Re: 1975 cb750F Resto.
« Reply #12 on: July 01, 2019, 02:59:30 AM »
Beautiful bike well done! Is the one you wanted to sell?

Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #13 on: July 01, 2019, 06:46:20 AM »
Andy...... too many motorcycles. It’s for sale, but not trying too hard...

Offline BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #14 on: August 16, 2019, 05:40:27 AM »
As mentioned in a few other posts, a local photographer wanted some bike pics for a project he is working on. Came out yesterday and here is his favourite of the  750F

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1975 cb750F Resto.
« Reply #15 on: August 16, 2019, 10:07:11 AM »
Gorgeous but I gotta ask... what's with the HONDA between the front running lights/turn signals?
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #16 on: August 16, 2019, 02:14:19 PM »
Jerry...... good catch! First guy to ask. It’s a front plate from a cb750K7/8. The chrome was so rusty, I threw it in with stuff I blasted and powder coated. It came out really smooth and black. Added a Honda badge I had in another pile of bits and stuck it on....... covers the hose tee and brake switch nicely and looks OK, so I left it on.
« Last Edit: August 16, 2019, 08:25:57 PM by BenelliSEI »

Offline BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #17 on: January 03, 2023, 01:18:26 PM »
Some one referred to this project post today and I realized it’s incomplete.

I did find a perfect, NOS 4-1, chrome head pipe. The Muffler was a complete different issue. Rarer than rocking horse poo. Ultimately, a local Forum member mention he had a muffler from a first year cb750A. It looks identical and fit perfectly! Really finished the bike.....

Offline Geoff Hastings

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Re: 1975 cb750F Resto.
« Reply #18 on: January 03, 2023, 02:51:14 PM »
That’s a really nice bike.

Offline BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #19 on: January 03, 2023, 02:52:25 PM »
Thanks! A friend has it now and he is really enjoying it!
« Last Edit: January 03, 2023, 06:20:00 PM by BenelliSEI »

Offline Don R

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Re: 1975 cb750F Resto.
« Reply #20 on: January 03, 2023, 03:39:24 PM »
 I couldn't leave mine stock, I put 400F handlebars on it and K4 headlight/start switch. 
No matter how many times you paint over a shadow, it's still there.
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Offline BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #21 on: January 03, 2023, 06:24:07 PM »
I couldn't leave mine stock, I put 400F handlebars on it and K4 headlight/start switch.

Don.....That’s a coincidence. I had a set of low 400F bars put aside for this bike. They looked awesome, but the stock ones were so comfortable, I left them alone......

Offline Magpie

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Re: 1975 cb750F Resto.
« Reply #22 on: January 04, 2023, 10:50:04 AM »
Nice work, beautiful bike! Cliff.

Offline BenelliSEI

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Re: 1975 cb750F Resto.
« Reply #23 on: January 06, 2023, 08:27:10 AM »
Nice work, beautiful bike! Cliff.

Thanks Cliff. The paintwork was stunningly well done and the really stout, 3D printed side covers (by the previous owner) were perfect too. Stumbling on an original muffler really finished it off.

Nice bonus: the exhaust that was originally fitted looks perfect on my Rickman CR project!
« Last Edit: January 06, 2023, 08:30:17 AM by BenelliSEI »

Offline RAFster122s

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Re: 1975 cb750F Resto.
« Reply #24 on: January 06, 2023, 08:50:08 AM »
Yeah that's a gorgeous CB750, BOTM material for certain...
« Last Edit: January 06, 2023, 08:52:16 AM by RAFster122s »
David- back in the desert SW!