CB750K2

Re: CB750K2 to CR750 (ish?)

surffly said:
As a disclaimer I have no idea where the OP falls. It's the web and I don't know him.
Maybe the OP can tell us a little about himself, his skills, experience and goals.

I really do appreciate this.

As to experience with bikes, I don't have any so you're right on there. I do a metric ton of research before doing anything and I take my time and make sure what I do is done right. I've been into cars for about a decade now and have always wanted a bike. I'm not afraid to get my hands dirty.

My plan with this bike is to slowly mod it as I find time and money. The first step is maintenance, then safety, then aesthetics. The front end comes first after I get it firing on all 4 cylinders, replace the oil and re-build the carbs. Then rearsets and working on the tail end after that. We'll see where I go from there. I may end up leaving it mostly stock after all, it'll just depend.

This is what I currently drive:

560SL by jasonwithers, on Flickr
 
Re: CB750K2 to CR750 (ish?)

Nice R107! Euro version?

So now we should have no questions about your taste or style, obviously have plenty of both.
 
Re: CB750K2 to CR750 (ish?)

I like Itchiban's 2014 new years resolution video.
Do it right if you do it cause it would suck to see a bike in that shape go down. It does sound like your thinking the correct way though. I personally would take a bike like that and do a period correct modification. Upgrading the front end to the GL dual disc would be a great start. I would think that they should be sprung a little stiffer which should be able to be modified into a pretty tight setup for the 750.
 
Re: CB750K2 to CR750 (ish?)

Wrenching isn't the fun part, riding a well set up machine is.
As to better I mean working better as a motorcycle.
No need for the dress up parts. The look will just happen when the correct parts are used. The CR looks the way it does because of how it works.

What are you thinking for rearsets?
Tarrozi makes some killer bolt on ones for about $300.
If keeping the stock seat and tank for a bit I would run them with some Superbike bars or some tarrozi raised clip ons. Try and get the bars just a little bit higher then the top triple. That will give you nice leverage over the bike and not kill your back. Also you can still ride two up.

Have you looked at cartridge drop ins for the forks? Real nice and easy upgrade.
Or progressive springs?

If changing the front master from the stock GL check out vintage brake. On the site they have a chart to help size the new master. Cbrf3 masters work well normally.

After the front is done are you going to do the rear shocks and swing arm bushings?
Would be the logical next step after the brakes and forks.
 
Re: CB750K2 to CR750 (ish?)

This is a friends bike.
Look came from it being a race bike.


Short of the paint what makes these look good?
Again the form came from the function



Parts that turned a CB into a CR
All performance stuff to make the bike better as a motorcycle.


This is a complete joke and a complete fail.
Only thing it is good for is pictures. More an art project then a bike.


It is great to be enthused.
But better to be educated.
 
Re: CB750K2 to CR750 (ish?)

NagChampa said:
Nice R107! Euro version?

Sort of. It's actually a 560SL that I've put euro bumpers on. The 560SL was kind of the best of the best R107s so I used it as a base but I couldn't stand the bumpers. Sadly I'm going to have to sell it this spring so that's another project I have, fixing it up to sell. I commute to work right now but I think my wife might be getting a new job that will make that impossible. Sucks because I love that car but I need something that gets better than 15mpg for commuting.

surffly said:
What are you thinking for rearsets?
Tarrozi makes some killer bolt on ones for about $300.
If keeping the stock seat and tank for a bit I would run them with some Superbike bars or some tarrozi raised clip ons. Try and get the bars just a little bit higher then the top triple. That will give you nice leverage over the bike and not kill your back. Also you can still ride two up.

I was thinking Tarrozi only because they're bolt-ons and I don't really want to weld anything to the frame unless necessary. My only issue is that it doesn't look like they really push the pegs back that far, and that they interfere with the kick start. I guess the kick start will eventually need to go anyway, but ehhh. I'll probably start with them and then go for something custom if I'm not happy with them.

I was under the impression that the GL forks were a bit longer than the stock forks so I'd have a spot to mount the clip-ons above the triple. I wasn't planning on upgrading anything in the forks, is that really that important this early on? Rear shocks will come too but I haven't decided which yet. I need to find a brace for the front too, but I haven't seen any tarozzi braces for the GL1000.
 
Re: CB750K2 to CR750 (ish?)

Superbrace for GL forks. About $200
Other internal upgrades can wait.

Get the folding rearsets if you want to use the kick starter, and swap the kicker to one from an F as it is offset a bit.
They aren't that far back or high. They are great for the street.
Raask are higher, but a bit harder to find.
 
Re: CB750K2 to CR750 (ish?)

this escalated a bit.

OP, do your thing with it. rather ride a personalized homemade backyard buid bike you love than ride something you hate looking at. you'll always be wondering: "what if..."

Verstuurd van mijn GT-S6500D met Tapatalk
 
Re: CB750K2 to CR750 (ish?)

clem said:
I like Itchiban's 2014 new years resolution video.
Do it right if you do it cause it would suck to see a bike in that shape go down.

I'm looking forward to the "after pics" ;)
 
Re: CB750K2 to CR750 (ish?)

What's a fair price to pay for a pair of brake pistons? I found a pair of '76 GL1000 calipers but they were partially torn down and don't have pistons.

I've found this on eBay and so far that's the only place I've found them for a '76. Any suggestions on where else to look? I'd prefer not to pay $120 for them but if that's a fair price I guess it isn't the end of the world.
http://www.ebay.com/itm/HONDA-GL1000-GOLDWING-FRONT-BRAKE-CALIPER-PISTON-AND-REBUILD-KIT-1975-1977-/370976946866?pt=Motorcycles_Parts_Accessories&hash=item565ff2fab2&vxp=mtr
 
Re: CB750K2 to CR750 (ish?)

So the brakes I found need a bit of rebuilding... what is safe to use here? I have some brake cleaner but it isn't putting a dent in this rust. Is it safe to soak in it?

GL1000 Brakes by jasonwithers, on Flickr

On a side note you guys have gotten into my head and I'm leaning back towards leaving the bike mostly stock. I'll probably source a 2nd tank to play with some other stock colors..
 
Re: CB750K2 to CR750 (ish?)

You don't think they can be salvaged? When I bought them I was told they were in good shape, obviously not. Finding brakes for a '76 is tough.
 
Re: CB750K2 to CR750 (ish?)

pull the seals and scrub them with hot soapy water and a non abrasive scotchbright type pad,dry them COMPLETELY use a some heat
they will be fine, minor pitting like that will not effect the seal
get new seals,the pistons are what need to be free of pitting
 
Re: CB750K2 to CR750 (ish?)

I actually have brand new pistons and seals ready to go. I'm just trying to figure out the best way to clean the caliper.

I can definitely do that, I was just afraid that using a scotchbrite pad might create some issues. Thanks :)
 
surffly said:
Those pits will cut the new seals and cause a failure
no they will not the seal does not slide in the caliper, learn yer shit before posting
this simple stuff dude
 
Yes, the seal doesnt slide on the piston, you got me. Super crazy expert you must be.

Still that rust and pitting would bin the parts for me.
But what do I know.
 
surffly said:
Yes, the seal doesnt slide on the piston, you got me. Super crazy expert you must be.

Still that rust and pitting would bin the parts for me.
But what do I know.
apparently not much ;D
point is the seal slides on the piston
that is mostly shit stuck to the aluminum ::) look at the pitchur ferchrisakes...
you better go pull all the calipers off all you're vehicles and put them in the rubbish bin
'cause they all do that
 
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