'71 CB450 Front end Upgrade to EX250 ?'s
- Thread starter Chris L.
- Start date
Hi Hill
I was going to try to remove the rivets like DJ did on his CB swap. I will mount the disc like he did.. well I hope to anyway. I just bought a ex250 disc on the cheap from ebay to see if it will match up. If not then I probably will scratch the idea as I don't have any of these spare parts laying around. I have to keep buy them and hoping they work. keeping my fingers crossed
I was going to try to remove the rivets like DJ did on his CB swap. I will mount the disc like he did.. well I hope to anyway. I just bought a ex250 disc on the cheap from ebay to see if it will match up. If not then I probably will scratch the idea as I don't have any of these spare parts laying around. I have to keep buy them and hoping they work. keeping my fingers crossed
Swagger
Putting boot to ass since 1967!
Hi, sorry it took so long to get back to you...
So as DJ says, use as much of the EX stuff as you can, there are very good pads available that'll make that disc work juuuuust fine for any speed you'll make with the 450. Dig up a CB360 disc and.....bolt the EX disc to theCB carrier just like he did. That should bolt to your 450 hub IIRC. The stem bearings should be the same for the 450 as on the 360, though be sure to verify. If not, just drop an email to allballs and they will likely set you up directly. The EX front end is a nice budget setup for what you're doing and the top clamp can be dressed up nicely. Get yourself over racetech, they can make you springs to suit whatever weight you need...just wait till the bike is mostly done before that step so you get the right weight. You can also get emulators to fit those4 forks that'll take them from good to very good on rough roads. The other good thing about that front end on a smaller bike...it's light compared to stuff from bigger bikes and weight savings are going to be a boon to performance. You'll be pleased with it once it's on and dialed in.
If you do decide to swap to a larger front disc (seriously, try the 250 disc with ebc or galfer pads and braided lines first) there are several almost bolt on options for your 450 hub and as PJ says, making a caliper bracket is easy as pie. If you can do basic maintenance, you CAN do this conversion.
So as DJ says, use as much of the EX stuff as you can, there are very good pads available that'll make that disc work juuuuust fine for any speed you'll make with the 450. Dig up a CB360 disc and.....bolt the EX disc to theCB carrier just like he did. That should bolt to your 450 hub IIRC. The stem bearings should be the same for the 450 as on the 360, though be sure to verify. If not, just drop an email to allballs and they will likely set you up directly. The EX front end is a nice budget setup for what you're doing and the top clamp can be dressed up nicely. Get yourself over racetech, they can make you springs to suit whatever weight you need...just wait till the bike is mostly done before that step so you get the right weight. You can also get emulators to fit those4 forks that'll take them from good to very good on rough roads. The other good thing about that front end on a smaller bike...it's light compared to stuff from bigger bikes and weight savings are going to be a boon to performance. You'll be pleased with it once it's on and dialed in.
If you do decide to swap to a larger front disc (seriously, try the 250 disc with ebc or galfer pads and braided lines first) there are several almost bolt on options for your 450 hub and as PJ says, making a caliper bracket is easy as pie. If you can do basic maintenance, you CAN do this conversion.
Swagger said:
Swag,
You and DJ always have the best posts! Thank you for taking the time to write on this thread. I will post more as I get these parts in and see how they all match up.
I am sure I will be bugging you guys more if you don't mind?
I already have a ex 250 rotor on the way to see if it will match up to the rivets like DJ 500 disc did. I will post some pics this week when it arrives. I will for sure do what you are suggesting if it doesn't. Keeping my fingers crossed
Thanks again for all of the help
Chris
crazypj
Split personality, I fake being smart
Chris L. said:PJ,
Thanks for positing that. I have a full tool shop just no mill, I've always wanted a mill I need to get one, oh well one day. .. Its great to see that it can be done with what I have. I may be picking your brain once I get there if you don't mind? Thanks again for all of the help
Chris
I 'chain drilled' around the curves, hacksawed out, filed to shape with half round file, then used flap wheel
hillsy said:
Hey Hill
Thanks for the reply. I was waiting to buy the EX forks to make sure I had a viable option. I didn't want to buy them and them not work. I go back and forth if I should just buy em or not. I see them all over ebay but none of them sell. I just didn't want to be stuck with some forks I didn't use?? What do you think
Swagger
Putting boot to ass since 1967!
Shit....I see some of the issue here....
DJ, didn't you run an 08-ish ex250 disc on the 360 carrier? Sorry Chris, didn't evem cross my mind until now...it's the pseudo-wave rotor you want.
Seriously though, looking at where you are for parts, I'd say back up and go look for I believe it's a mid-90's CBR disc that bolts to the CB450 hub? PJ, do you have any input on this? I've seen late model sportbike discs bolted to CB hubs, at that point you really would be down to just chipping out a caliper adapter to move your stock EX or perhaps something more exotic to the proper position.
DJ, didn't you run an 08-ish ex250 disc on the 360 carrier? Sorry Chris, didn't evem cross my mind until now...it's the pseudo-wave rotor you want.
Seriously though, looking at where you are for parts, I'd say back up and go look for I believe it's a mid-90's CBR disc that bolts to the CB450 hub? PJ, do you have any input on this? I've seen late model sportbike discs bolted to CB hubs, at that point you really would be down to just chipping out a caliper adapter to move your stock EX or perhaps something more exotic to the proper position.
