CB650Z racer
CB650Z racer
Got the 650Z on the road this weekend. Great fun to ride. Now on to the 750k1 build.
Still some minor things to do, racing stripes on the tank and a different seat cover. Will also get some proper pics taken when it's all finished up.
Still some minor things to do, racing stripes on the tank and a different seat cover. Will also get some proper pics taken when it's all finished up.
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1979 Honda CB650Z
1971 Honda CB750 K1
1971 Honda CB750 K1
Re: CB650Z racer
a couple of more...
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1979 Honda CB650Z
1971 Honda CB750 K1
1971 Honda CB750 K1
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- Posts: 15
- Joined: Thu Aug 20, 2009 9:34 pm
- Location: Asheville, NC USA
Re: CB650Z racer
Thanks man. The levers are Chinese-$40-ones from ebay I picked up for another project. Decent quality for the price.
1979 Honda CB650Z
1971 Honda CB750 K1
1971 Honda CB750 K1
Re: CB650Z racer
Nice bike! Where'd you get tank? And how much?
Re: CB650Z racer
Hawk213 wrote:Nice bike! Where'd you get tank? And how much?
That would be the original 650Z tank.
My blog .... http://rossmz.blogspot.com.au/
Re: CB650Z racer
Thanks. And yeah, stock tank. Blasted and powder coated.
I've done a few miles and it so much fun to ride with the rear lifted (and front lowered), feels like a true racer. New rear shocks a bit stiff, but I'll live with that over the squishy stock ones.
Shouldn't have reused the caliper seals, they are leaking and will be rebuilt with new seals today. That's the only problem I've encountered so far, knock on wood. The engine even feels better with the new exhaust, almost no use for choke any more and strong all over the rev range. No problem doing the ton
Started tearing down the 750 engine last night, so I don't think the 650 will get a new seat this season
I've done a few miles and it so much fun to ride with the rear lifted (and front lowered), feels like a true racer. New rear shocks a bit stiff, but I'll live with that over the squishy stock ones.
Shouldn't have reused the caliper seals, they are leaking and will be rebuilt with new seals today. That's the only problem I've encountered so far, knock on wood. The engine even feels better with the new exhaust, almost no use for choke any more and strong all over the rev range. No problem doing the ton
Started tearing down the 750 engine last night, so I don't think the 650 will get a new seat this season
1979 Honda CB650Z
1971 Honda CB750 K1
1971 Honda CB750 K1
Re: CB650Z racer
Really impressing work.
For the calipers, it is often the surfaces rather than the seals.
For the calipers, it is often the surfaces rather than the seals.
Cosky's great (free) online manual: http://cosky0.tripod.com
forum links to common technical issues
If you really like this site and you would not like to see it vanish soon, have a look there: Urgent: Future of HondaCB650.com Forum
forum links to common technical issues
If you really like this site and you would not like to see it vanish soon, have a look there: Urgent: Future of HondaCB650.com Forum
Re: CB650Z racer
Thanks volker. So you're thinking new pistons?
1979 Honda CB650Z
1971 Honda CB750 K1
1971 Honda CB750 K1
Re: CB650Z racer
Often pistons look bad (like all mine ), however they seem very hard to get. I heard that clubs did small reproduction series for older CB's.
No idea how it looks like for the CB650 now. In any case measure/verify exact piston dimensions before you buy something.
A bad piston surface will however not cause immediate leakage. It is crucial for tightness that the piston seal groove is intact and moreover that the caliper has no sharp grooves or edges that may damage the piston seal.
I think also the orientation of the seal plays a role, but rather for clearance after release than for tightness.
No idea how it looks like for the CB650 now. In any case measure/verify exact piston dimensions before you buy something.
A bad piston surface will however not cause immediate leakage. It is crucial for tightness that the piston seal groove is intact and moreover that the caliper has no sharp grooves or edges that may damage the piston seal.
I think also the orientation of the seal plays a role, but rather for clearance after release than for tightness.
Cosky's great (free) online manual: http://cosky0.tripod.com
forum links to common technical issues
If you really like this site and you would not like to see it vanish soon, have a look there: Urgent: Future of HondaCB650.com Forum
forum links to common technical issues
If you really like this site and you would not like to see it vanish soon, have a look there: Urgent: Future of HondaCB650.com Forum
Re: CB650Z racer
Changed the seals yesterday... getting good at doing this, both calipers redone in 20 minutes... leak free now, but need to get the rubber seals/bushings for the slider bolts..
Also got around to making the new seat today, laying down some fiberglass. Should be done in a few days completing this project.
Also got around to making the new seat today, laying down some fiberglass. Should be done in a few days completing this project.
1979 Honda CB650Z
1971 Honda CB750 K1
1971 Honda CB750 K1
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- Posts: 19
- Joined: Mon Oct 06, 2014 9:36 am
- Location: Aberdare, South Wales
Re: CB650Z racer
Lovely looking bike, what exhaust you running? I'm a sucker for a set up like that, its all about the symmetry of twin cans
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- Posts: 19
- Joined: Mon Oct 06, 2014 9:36 am
- Location: Aberdare, South Wales
Re: CB650Z racer
also what did you use to detail the engine letters?
Re: CB650Z racer
ross_cheeks wrote:Lovely looking bike, what exhaust you running? I'm a sucker for a set up like that, its all about the symmetry of twin cans
ross_cheeks wrote:also what did you use to detail the engine letters?
Thanks man. Exhaust is stock up to where they angle upwards. Cut and welded on the upsweep. Cans are from Cone Engineering. Sound very good, although a bit loud for longer rides/high rpm.
The covers are detailed with your off the shelve spraypaint. Filled the recesses with a small brush and wiped off the excess. Easy peasy.
The bike has gotten a new seat which I think looks much better and some decals on the tank. Will try to get a few pics taken this weekend.
1979 Honda CB650Z
1971 Honda CB750 K1
1971 Honda CB750 K1
-
- Posts: 19
- Joined: Mon Oct 06, 2014 9:36 am
- Location: Aberdare, South Wales
Re: CB650Z racer
hmmm Ive got a 1980 Z but its got a 4-1 style system, would rather a twin can set up though
*Edit
Just actually bothered to look and it appears i have the same set up
*Edit
Just actually bothered to look and it appears i have the same set up
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