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CBR Desmog 3
The Camshaft
The valve timing between 49 state and California CBR600 motorcycles differ greatly.
They are as follows:
They are as follows:
49 State:
- Intake opens: 15 degrees BTDC
- Intake closes: 35 degrees ATDC
- Exhaust opens: 38 degrees BBDC
- Exhaust closes: 7 degrees ATDC
California:
- Intake opens: -5 degrees BTDC
- Intake closes: 40 degrees ABDC
- Exhaust opens: 40 degrees BBDC
- Exhaust closes: -10 degrees ATDC
The Carburetor:
The carburetor can be rejetted or just swapped.Swapping out the CA carb for a 49 state carb makes the most sense as the
CA carbs have extra vent tubes that must be blocked.
CA carbs have extra vent tubes that must be blocked.
49 State:
- Carb model #VP41A
- Main Jet: 135
- Idle Speed: 1,200 rpm
- Pilot Screw: 2 1/8 turns California:
- Carb model #VP42A
- Main Jet: 132
- Idle Speed: 1,400 rpm
- Pilot Screw: 2 3/4 turns
The slow jet and float level in both models are the same.
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Great Product photo from Mini Spares in the UK! Photo by Matt Woods Photography.
Find it here:
http://www.minispares.com/product/Classic/Gearbox/DP3.aspx?15&ReturnUrl=/Default.aspx|Back%20to%20home
Find the AP-17 on our site here:
https://goldplug1.myshopify.com/products/ap17
Normal Wear Particles at Oil Change
We have had a lot of questions lately on what “Normal” wear look like at an oil change.
The very fine metal the slips through your oil filter looks like this:
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