Author Topic: cb750 1975K5 Cafe Racer  (Read 14771 times)

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Offline Guns_Up

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cb750 1975K5 Cafe Racer
« on: June 01, 2012, 08:37:30 AM »
Ok guys, I picked up a 1975K5 CB750 and wanted to rebuild it for a "little" project/stress relief. It was in decent condition when I  started.

The frame is a little rusted up now, but I got a quote to get it re powder coated at JLC powder coating in Macon, GA for $150 for the frame and swing arm.

The first thing I tackled, other than trying to make room in the shop, was the Bat. box and tool tray.



I shave with a safety razor so what I did was take a blade and cut the rubbers, so I wouldn't completely mangle them trying to pull them through the tiny whole.

Then I glass blasted them and primed after cleaning with some alcohol so they wouldn't rust.




The tool try was starting to crack a little so I stop drilled it and JB welded the whole.



Then came the front brakes, they were seized on the disk ridiculously tight (which made pushing the bike a real pain)


A little heat got them apart, I have polished the piston and calipers and in the process of painting them with VHT Caliper paint.

Upon taking off the tappet covers the Intake of #4 and Exhaust of #3 looks like the valve clearance was off, they have been readjusted. I am hoping that they were just loose and the rockers aren't worn out but I will found out once I get her running again



The tank has been prepped with Dawn dish soap, boiling water and sheet metal screws. For the first HR and a half I shook it for 1min every 15mins. Then for S*%ts and grins I strained it out to see what I found. Then after a good rinse I put in more boiling water and dawn and let it set up for 24hrs. After a thorough rinse it was treated with boiling water and Esprit Rust Remover concentrate. It has been sitting up for about 5 days now (b/c of my schedule) but today it will be drained, rinsed, dried, and coated with MMO to keep from any flash rusting.


<a href="http://s1266.photobucket.com/albums/jj534/ataudette/?action=view&amp;current=DSCF0132.jpg" target="_blank"><img src="http://i1266.photobucket.com/albums/jj534/ataudette/DSCF0132.jpg" border="0" alt="Photobucket">[/url]

http://i1266.photobucket.com/albums/jj534/ataudette/DSCF0132.jpg

In the mean time, I tackled the swing arm. removed the old bushings (which took some time) and in the efforts fond that the grease grooves were already cut into the center collar. But the little felt washers are done for, anybody know where I can get some? also I need to tap the pivot bolt to fit American grease fittings.





I have degreased the whole shabang and polished the center collar.

For the front fender, the bottom was rusted up a good amount, today it is getting blasted and then after cleaned up the bottom side will be coated in a spray-on truck bed liner.


and now a picture of Christmas in May



These Hagons were funny, B/C I am stationed in CT, not far from Dave Quinn. When I talked to him I asked if I could swing by and pick them up but he told me that if I did that he would have to charge me state taxes and it would be cheaper if he sent it to the house in GA. He is a good guy, and it was a breeze to deal with him. His shipping was insanely fast to.
I thought that this was pretty cool of Dime City Cycles to do


I will get more into details of what all goodies I picked up once they go one the bike, but I have a whole list of what I've bought so far, where I got them from and for how much. I post it up latter.

have a good one yall

Tony
« Last Edit: April 27, 2014, 07:47:29 AM by Guns_Up »

Offline Greggo

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Re: cb750 1975K5 a bit of a brat
« Reply #1 on: June 01, 2012, 09:18:10 AM »
Cool.  Welcome to the forum! 

Offline harisuluv

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Re: cb750 1975K5 a bit of a brat
« Reply #2 on: June 02, 2012, 09:46:42 PM »
Great start!  Will be following.

Offline Guns_Up

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Re: cb750 1975K5 a bit of a brat
« Reply #3 on: June 06, 2012, 07:55:45 PM »
Ok, a made some progress. I finished up the inside of the tank with the esprit, the underside of the front fender, Softened up the carbs boots, the brake calipers are painted and curing for the 7 days till I can put the clear on. and today (with the help of my friend who is a bodybuilder) we got the engine out.
THis is what came out when I used the dawn dish soap/boiling water and dry wall screws. Every 15min for an hr and a half I would shake it for a min or 2.


I put in the Esprit Rust Remover Concentrate for a week (It was the second tank that we used it with, and it came out great, the first one was absolutely AMAZING) after I completely dried out the tank with compressed air and a new rag with the flexible fingers. plugged up the petcock whole with a rubber stopper and poured in some MMO and sloshed it around to keep it from flash rusting.

this is what came out with the Esprit

AND THE INSIDE







The front fender after the rust was glass blasted off, sprayed with duplicolor truck bed liner, but where the rubber bumpers go that hold up the support arms, I just primed, painted and cleared.





I got the calipers polished on the inside, taped up and preped for paint with Duplicolor caliper paint

This picture is pretty crappy, they look much better.

The Bat. tray and tool tray and painted and cleared


Softening up the carb rubber with a (about 60%) pure wintergreen oil and 1/2 gallon of water. Heated it to just below a boiling for 20min and then let it sit for 24hrs. they softened right up and will work great.


AND LASTLY, she is out


we are tugging along, not at any sort of fast pace but gettin there.

Tony
« Last Edit: June 06, 2012, 07:57:42 PM by Guns_Up »

Offline brandEn

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Re: cb750 1975K5 a bit of a brat
« Reply #4 on: June 06, 2012, 09:54:45 PM »
Looks great. Man that tank is nice now!

Offline Guns_Up

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Re: cb750 1975K5 a bit of a brat
« Reply #5 on: June 07, 2012, 06:03:15 AM »
thanks man, the Esprit did a hell of a job, and that was the second tank we did with it too.

Offline Guns_Up

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Aight so its been AWHILE but the bike is to the point where it can be fired and tuned up, all though I haven't done this yet, but to recap on what I have done.

The Esprit worked wonders on the inside of the tank, to protect the paint on the outside I wrapped it in duct tape---->


This I DO NOT recommend, When I took the tape off the adhesive from the tape bonded to the tank, messing up the paint job. hindsight 20/20 putting boiling water into a metal tank covered in an adhesive, the adhesive will cure to hot metal thing. NOTED no big deal though as I plan to paint it now.

I got the frame, swing arm, rims, hubs, fork lowers, engine mounts, and a few other pieces powder coated in gloss black by JLC Powder Coating in Macon, GA. and they did a fabulous job with an amazing turn around time. They are across the street from a custom bike shop so motorcycle parts are nothing new to them, and the atmosphere is great. I couldn't be more happy with the job they did.







I replaced all the wheel bearings with All Ballz, and the steering head bearing too. Got new fork tubes and seals from Dime City Cycles along with the repo gators and replaced the spokes with Buchanan spokes. I originally ordered some cheapo ones from Thailand off ebay paid WAY to much for shipping waited for ever and when I got them they were the wrong ones. I returned those and went for the tied and true. lacing the wheel was new to me and took forever to do the front one. I took them down to Rat Rodz in Macon, GA (across the street from JLC Powder Coating) and had them balance, true, and spoke up the rear wheel. they also wrapped it in my Bridgestone Battleax's




I LOVE the way they came out!

In the mean time of the wheels and frame getting powdercoated I borrowed my uncle's engine hoist and cleaned, and scrubbed, and cleaned, and scrubbed the hell out of the engine so I could paint it with some confidence that the duplicolor would stick.







The colors are Cast Coat Iron & Aluminum, we were skeptical of the way the two colors would look together, but it turned out good.

I picked up a new wire harness from parts n more for 75 doll hairs to replace the old one the PO had gone through to find his electrical problem. I didnt want to deal with this so i replaced it (I am by NO means a wire chaser and tend to let the magic smoke out to much)




while doing this I cleaned all the rust off of the points and got new screws

I thought that I had a picture of it but I guess I don't. In HondaMan's book he tells you to "trim" one of the engine mount bevel/flange (I forgot the exact word) so that when you go to put in engine in it would be simply turn engine on right side then side frame over. I wrapped the frame to protect it and the engine and being supper carful it took literally 15 min tops. easiest part yet!!!



on to the rear wheel and components- new sprocket, chain, brakes, shocks, spokes, rubber the whole 9 yrds.


The shocks I got from Dave Quinn were Hagon 2810's 12.2" slim bodied, now in conjunction with raising the forks through the trees 1.5" I had a revelation after installing the rear brake linkage about 10 times each time I got it all hooked up the brake would be engaged fully. after some farting around and head scratching it came to me- Shorter shocks, shorter front end, ! BRAKE SPRING NEEDS TO BE SHORTER !!! so a few trial and error lengths were done before ever cutting and I found its happy place, cut and BOOM works great.

Second and still lingering problem, with the center stand up it hits the chain. still kicking around Ideas for that one.
Third with it over on the kickstand it sits almost vert and a strong breeze could topple her over -no bueno-
   So after inspecting a few modern cruiser kickstands I found that the kawasaki vulcan (99-07) has the same shape/design I just bought it off ebay with hopes of a little fabrication and a problem solved.
 
For the front end I got the ss brake lines from slingshot cycles, new throttle and clutch cables, a new BMM with the banjo on the front to accommodate the bend in my bars, new throttle tube, progressive fork springs, super motto bars (inverted= super comfy) and new brakes.



for the seat, I tried fiberglassing my own -epic fail- and decided to pick one up from Carpy. it came in quick and looks Bada$$



(had to try it on with the tank)
I had to do a little mods to the seat b/c I kept the frame stock in case I or someone else wanted to restore it to its original beauty.






on the center stand

on the kickstand (almost no difference)

Some for fun



Now the riding position I find comfy, I can put BOTH feet on the grand firmly and flat (a huge deal for me, im only 5'7")




My dad who is a little shorter found it comfy and stable also


Before I forget, I replaced the pod filters with the air box and a K&N filter. The main jet needles to Keihin #110's. got a new bleeder screw, new plugs DENSO X24ES-U (as prescribed by Honda Man) and new plug caps.

Now to the electrical (THE BAIN OF MY EXISTENCE)

I got a new Acewell tach/speedo combo (model 2853), and new bullet type turn signals. Making the connections for the acewell was no problem, the instructions are easy to follow. The real trouble was with the turn signals, they were made for modern "smart" relays (power+ground, winks by itself) the cb has three (power+ground+winker) All I can say is my brother found this out and explained it to me like that. luckily he found the relays he needed at radio shack for $10 and we are in BITNAS.

For the paint job I am thinking cream with a bold black line down the tank with the writing in crimson, or the line being crimson with the lettering in black.

OPINIONS!!!!?????

This will be the writing on the tank.


This was my squads nickname in the ghan and we came up with this design. we made a stencil and sharpied it onto all our undershirts. I want this to go on the rear of the seat where the hump to break up all the dead space



A few things still left to do, minor things but things. any questions you have fire away.



Tony.























Offline Stev-o

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #7 on: September 03, 2012, 02:19:21 PM »
Looks great. 
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline theofam

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #8 on: September 07, 2012, 03:10:16 PM »
That's a ton of progress in three months!  It's looking great, especially the engine paint combo and the way you masked it.  Keep chuggin'!

Offline Schnell

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #9 on: September 07, 2012, 04:47:24 PM »
This is inspirational, thanks!

But have you kept a tally of the costs?
A good traveller has no fixed plans and is not intent on arriving. --Lao Tsu

primary: 1974 Honda CB750
long term, now resting: 1981 BMW R100/7
project: 1971 Honda CL350
project: 1974 Honda CB450

previous:
1975 Honda CB750
1973 BMW R90/6
1981 Suzuki GS650
1973 Honda CD175

My little website: http://frankfoto.jimdo.com/

Offline Stev-o

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #10 on: September 07, 2012, 07:53:43 PM »

But have you kept a tally of the costs?

No no no, don't even think about it!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline GrandRapids750K3

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #11 on: September 07, 2012, 07:59:25 PM »
This is looking awesome. Thanks for all the details, makes for an enjoyable read. Looking forward to seeing the progress.

Offline Tews19

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #12 on: September 07, 2012, 08:09:07 PM »
Looks really great! Is the rear wheel an 18"? The center stand does look really tall for some reason. I wonder why? Anyways keep up the great work and post more pics!
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Guns_Up

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #13 on: September 08, 2012, 03:21:16 PM »
thanks for the kind words guys, I was hoping to have her done by now. Every time I got to something new I ended up thinking "Since I'm doing that, I might as well do this too"


But have you kept a tally of the costs?

I have kept a tally of the total cost, buttttttt for subconscious reasons I haven't added it all up in awhile, But I do have the cost for everything I've bought/paid for. Is there something in particular you were looking to know or do you want a list of it?

Looks really great! Is the rear wheel an 18"? The center stand does look really tall for some reason. I wonder why?

Yessir, the rear wheel is an 18" I think that the center stand looks so long because the rear shocks are shorter pulling the wheel and swing arm up to "reveal" it more.


I have a few things that I want to do still, for the exhaust I wanted to get a set from Cycle X but Ken had some problems with his pipe bender and the money I had set aside for them I spent on something else. I still need to come up with an idea for the grips too, the ones I bought where too short, I want to get the same type leather that my seat will be and find a way to wrap and cure them.

The Kawasaki vulcan kickstand came in, next Saturday I will have time to mess around with it to see if it will fit the frame and give me the lean that I want.

I'll see if i cant find more pictures, and I keep you all updated

Tony

Offline xxHillratxx

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #14 on: September 08, 2012, 09:40:03 PM »
Wow looks really great! Very nice job.
1974 CB750k

Offline Guns_Up

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #15 on: November 13, 2012, 10:24:45 PM »
ok quick update before I head to bed.

I have been back in school now for a few months and it has been my main focus, plus my school is in CT and the bike is in GA, so I haven't had a whole lot of hands on time with her. I have had a few hours here and there when I'm back in town for some weekends but not enough for the major electrical work that needs to be done. My turn signals I bought were stumping me

these ones ------->     http://www.ebay.com/itm/BLACK-BULLET-MARKER-TURN-SIGNAL-LIGHTS-AMBER-LED-HARLEY-BOBBER-CHOPPER-CRUISER-/330827446812?_trksid=p2047675.m1850&_trkparms=aid%3D222001%26algo%3DSIC.CURRENT%26ao%3D1%26asc%3D48%26meid%3D3446558849403630786%26pid%3D100011%26prg%3D1035%26rk%3D1%26sd%3D251165650449%26

until I read the part tonight that said "my require a 1-1000 OHM resistor" why I never thought to look before is beyond me.

PLUS I am not sure if I'll need to pick up the three pronged flasher relays for them. ANY IMPUT ON ELECTRICAL IS WELCOME, I AM LOST IN THE SAUCE.

plus I cut out the turn signal buzzer, if my mind serves me correct they were Brown and Blue wires, as of right now not connected to anythin, leaving it "ungrounded" (im not an electrical engineer/ electrical genius so the terms aren't correct or fancy... more Barney style) same situation with the horn wires.

Also on the list of items to get is a new fuse holder
this little guy -------->       http://sohc4shop.com/catalog/product_info.php?cPath=23&products_id=48

and also while using the search function (which I get extra brownie point for) I found this website to get the OE style jap electrical connections which are WAY to hard to come by.

http://www.vintageconnections.com/

the only other thing electrical wise i need to pick up is a new bulb for the light and a rear brake light switch (mine is cracked so might as well)

also on the list are a new set of exhaust clamps from Cycleexchange ----- Which they did call me back about the pipes I had ordered when they were compleated but like i said I had already spent the money on other things, bills :( ----- but any company willing to do that for me is good enough to get my business when they can.

I wrapped my stock pipes with a DEI Tan Kevlar wrap after taking off the old megaphones, know i need to secure the ends of the pipes to the frame so they are supported at both ends to relieve the vibrations at the top end.

The Kawasaki Vulcan kickstand ended up being the same length and would have been more work to fab up then (brace yourself) "chopping " the original one. so that was $20 down the pisser plus the cost to get it powder coated again.

I found new grips that i like enough to put on and with go well with the paint scheme I'm aiming for.

http://www.dimecitycycles.com/vintage-cafe-racer-caferacer-bobber-brat-chopper-custom-motorcycle-handlebar-parts-classic-white-barrel-style-titty-cushion-grips-4420-46.html

I like Dime City Cycles as a parts supply place, they are fast, reliable and sell high quality stuff. they also have the Acorn nuts for the rear suspension, (the SKU # is 90309-315-000 just put that in the search on their website if you need these things too) the ones i couldn't find even at the two local mom and pop hardware stores that ask me if I'm done yet everytime i go in.
Also from DCC I'm gonna pick up new "shorty" race style brake/clutch levers ( SKU: 30-73682 & 30-73681) if you wanna check them out.

the old foot pegs are bulky looking to me, but function great with the spring they have in there so I'm figuring out a way to clean up the look and maintain a functionality of them.

SO you now know where the bike is at and where she is going to. and there will be more pictures up in the week after Thanksgiving.

Happy 237th Birthday to any Devil dogs and Corpsmen out there and happy veterans day (especially to any Vietnam vets, they never got the thanks that we did when we returned home, and they are the reason our welcome home was as smooth as it was)

also if you get the chance to do a patriot riders ride and escort a fellow American to his final resting place do so, its an experience you will never forget and neither will the family of the fallen.

have a good day everyone

Tony

Offline greenjeans

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #16 on: November 14, 2012, 01:02:44 PM »
what is it about black rims and the stock blue tanks....   they look so good together.    Good job so far - can't wait to see it finished.
Yep, I'm the kid that figured out how to put things back together...eventually.

Offline Roach Carver

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #17 on: November 14, 2012, 01:32:59 PM »
Very nice build. Have you left room for padding behind your rear on the tail?

Offline Guns_Up

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #18 on: November 14, 2012, 03:35:10 PM »
I have to make up a seat pan for it, that will be one of the very last things ill do, I still need to find an upholsterer that I can trust will do good work on it.

Offline Tews19

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #19 on: November 14, 2012, 07:15:18 PM »
Looks really good... Where did you get wintergreen from... I could really use some but not sure where to buy...
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Guns_Up

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #20 on: November 14, 2012, 08:24:33 PM »
Tews, I actually got mine off of Amazon.com from an herbal shop on there (8oz was $15). The two in town didn't sell them in a high enough quantity nor did they have them in stock. the two key factors while doing 1) Is ventilation (our your ENTIRE house while smell like you just burnt the hell out of store brand bubble gum) and 2) let them stew in there for awhile, patience is key.

Hope this helped

Offline Guns_Up

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #21 on: February 07, 2013, 03:27:36 PM »
Its been awhile, and I've taken her out for a ride the last time I was in GA. I absolutely LOVE IT, needs a seat and some paint but we are working on making the seat and the paint I will probably get to around March (I hope). but for your viewing needs, here she is. if you have any questions let me know.

My electrical is Finlay working



I got some closed cell foam from one of those therapeutic places then wraped them in some leather. (the picture isnt that good because it was dark in the shop)



















BLAH










making the seat


The top layer of the cushion we are making



 Hopefully these videos will work











and a before shot





and my little CL350







Tony

Offline Tews19

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #22 on: February 07, 2013, 06:22:54 PM »
Great work! Your videos work too
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Guns_Up

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #23 on: February 07, 2013, 09:19:53 PM »
Thanks Tews, its a great feeling getting her kicked over and on the road. Makes all the challenges worth it.

Offline stuartni

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Re: cb750 1975K5 a bit of a brat (Now a Cafe Racer) UPDATED WITH PICS*
« Reply #24 on: February 08, 2013, 07:16:07 AM »
loving the build bike looks great