- Posts: 110
- Thank you received: 0
tuned for airbox but swapping to pod filters
- jbalet666
- Topic Author
- Offline
- User
81 650csr
AoA
old soul young blood
Please Log in or Create an account to join the conversation.
- jbalet666
- Topic Author
- Offline
- User
- Posts: 110
- Thank you received: 0
81 650csr
AoA
old soul young blood
Please Log in or Create an account to join the conversation.
- martin_csr
- Offline
- User
- Posts: 8068
- Thank you received: 1656
Please Log in or Create an account to join the conversation.
- jbalet666
- Topic Author
- Offline
- User
- Posts: 110
- Thank you received: 0
I think I'm going to keep the air box until summer then rejet/retune the carbsmartin_csr wrote: If you're sure you want to use pod filters, then get a set of VM24 carburetors. Or maybe some VM26s. VM24s came stock on most 650s from 77-81 & will be more readily available. You'll also need the carb holders.
as always the labor for this stuff is what gets you in the end but its never a bad thing to pay foe someones expertise
so hopefully by then I'll be able to put the jets in and just take them to get tuned
I got the filters relatively inexpensive so this isn't a do or die situation I'm planning on switching exhaust as well so there's no sense in tuning them more than once again
I'm extremely new to this stuff so I apologize to everyone in the thread if I get redundant or ask dumb questions
Thanks for all the help
81 650csr
AoA
old soul young blood
Please Log in or Create an account to join the conversation.
- martin_csr
- Offline
- User
- Posts: 8068
- Thank you received: 1656
Rr Br shoes. If they are the originals or their age is otherwise unknown, replace them. The adhesive that binds the linings to the shoes can fail over time, so a lining can get jammed between the shoe & drum, locking the rear wheel.
Please Log in or Create an account to join the conversation.
- jbalet666
- Topic Author
- Offline
- User
- Posts: 110
- Thank you received: 0
81 650csr
AoA
old soul young blood
Please Log in or Create an account to join the conversation.
- martin_csr
- Offline
- User
- Posts: 8068
- Thank you received: 1656
I installed Vesrah brake shoes. If you go ahead & replace them, sand the leading edges of the shoes &
sand the drum glazing - very evenly & very carefully. Otherwise, you may end up w brake squeal.
Do not breathe the dust, as it contains asbestos.
Don't contaminate the bearings. Use brake caliper grease where lubrication is recommended.
Permatex Ultra disk brake caliper lube in the little packets.
Please Log in or Create an account to join the conversation.
- WABBMW
- Offline
- User
- Let The Good Times Roll !
- Posts: 341
- Thank you received: 16
I have an '82 with Mikuni BS32 CV carbs. The bike ran well with the stock air box. At one time, I considered pods. (Much easier to work on, and I thought that if they allowed more air, then the bike would surely run better). But before buying the pods, I tried a little experiment. I removed the air filter and the intake nozzle from the air box. This allows air to enter the carbs directly from the top of the air box, which is approaching 5" in diameter.
THE MOTORCYCLE RAN TERRIBLY. It bogged so badly that the horsepower was probably half of what it had been putting out. It would not even hold a steady speed without surging. Now the stock main jets are 107.5. So I put 110.0s in. The bike ran slightly better, but not good. I then put 112.5 jets in. Ran slightly better, but still nowhere close to stock. I didn't try any richer jets or raising the jet needles. Went back to 110.0 jets and put the filter and top back on the air box. THE BIKE RAN EXTREMELY WELL.
My conclusion, like so many others have mentioned, is that the CV carbs depend on the very slight restriction within the air box to run well. Pods lead to a tuning nightmare for the CV carbs. I am not saying that they might not eventually run well, but not until extensive work and experimentation has been done.
Bill Baker
Houston, Texas
1982 KZ650 CSR
2008 Yamaha FZ1
2006 Yamaha FZ1
1977 Honda Supersport 750 four (sold)
1984 Honda Nighthawk 650 (sold)
Please Log in or Create an account to join the conversation.
- Proxy
- Offline
- User
- 80% Human 20% Nuts/Bolts
- Posts: 513
- Thank you received: 46
Take it from me cuz I found
If you leave it then somebody else is bound,
To find that treasure, that moment of pleasure,
When yours, it could have been.
1977 KZ650 B1 Being restored to original (Green)
1977 KZ650 B1 Original (Red) Sold
1977 KZ650 B1 Donor Bike for Parts
Please Log in or Create an account to join the conversation.
- jbalet666
- Topic Author
- Offline
- User
- Posts: 110
- Thank you received: 0
Proxy wrote: I think you made the right decision on the airbox if only for a little while. At least you will know how your bike is supposed to perform so when and if you go to pods you will be able to judge for yourself.I will only add this advice. When you do switch do not burn your bridges. It's bot fun getting an airbox out and some just end up wrecking the airbox. Besides you can get OK money for them usually and you just may not like pods and want to back track. It's not fun putting it back in either. I have done both. I like an airbox. That's my two cents and at that I'm overcharging.
Thanks for your advice I'm planning on keeping it in case I sell it one day I plan to return it to stock not many people here are interested in a cafed csr
81 650csr
AoA
old soul young blood
Please Log in or Create an account to join the conversation.
- martin_csr
- Offline
- User
- Posts: 8068
- Thank you received: 1656
Here's a 650 that was posted over at the KZ650.Info site.
Please Log in or Create an account to join the conversation.
- Proxy
- Offline
- User
- 80% Human 20% Nuts/Bolts
- Posts: 513
- Thank you received: 46
Take it from me cuz I found
If you leave it then somebody else is bound,
To find that treasure, that moment of pleasure,
When yours, it could have been.
1977 KZ650 B1 Being restored to original (Green)
1977 KZ650 B1 Original (Red) Sold
1977 KZ650 B1 Donor Bike for Parts
Please Log in or Create an account to join the conversation.