Honda 87 CBR600F Hurricane, project
#11
#13
Valve adjustment chore…done
Got into the valve adjustment chore, very good results!
Compression was so-so before adjustments. All the intake valves were too tight, and some exhaust valves. All set correctly now.
Compression across cylinders is; 1 to 4, 180-200-180-200 psi !!!
Got my bucket of soapy water and wiping away all the dust and dirt accumulation too.
Compression was so-so before adjustments. All the intake valves were too tight, and some exhaust valves. All set correctly now.
Compression across cylinders is; 1 to 4, 180-200-180-200 psi !!!
Got my bucket of soapy water and wiping away all the dust and dirt accumulation too.
#14
Working on updating maintenance chores…
Some progress can be seen here, detail cleaned front wheel, and water hoses, new front tire, Engine Ice coolant.. Painted the headers.
Pulled out the radiator and hoses, for better access during valve adjustments.
Great results after valve adjustments, compression is 1-4, 175-200-180-200 psi.
Waiting for new sprockets and chain. Have new rear tire ready. Brakes need to be bled.
You can see I have both L and R mirrors, the white mirrors sitting in the box.
Tires are Bridgestone Battlax Hypersport S20 EVO, 140/70-R17H, & 110/70-R17H
Pulled out the radiator and hoses, for better access during valve adjustments.
Great results after valve adjustments, compression is 1-4, 175-200-180-200 psi.
Waiting for new sprockets and chain. Have new rear tire ready. Brakes need to be bled.
You can see I have both L and R mirrors, the white mirrors sitting in the box.
Tires are Bridgestone Battlax Hypersport S20 EVO, 140/70-R17H, & 110/70-R17H
Last edited by Buffalo_BiL; 06-10-2019 at 09:48 AM.
#15
What was the bump in compression and do you notice a difference on a road test? Been wondering about valve adjustment but was thinking it is not related to hesitation so was going to defer. I have compression around 150 per cylinder with one at 175. I thought this was pretty decent and indicating that power lag could not be a result of valves. Thanks.
#16
What was the bump in compression and do you notice a difference on a road test? Been wondering about valve adjustment but was thinking it is not related to hesitation so was going to defer. I have compression around 150 per cylinder with one at 175. I thought this was pretty decent and indicating that power lag could not be a result of valves. Thanks.
There was almost no clearance on the intake side.
The manual recommends these bikes have valve adjustments every 8000 miles. It ain't hard after you get the radiator and hoses out of the way, and that wasn't so hard. You only have to drain the coolant out of the radiator.
This bike ain't safe for the road yet. The chain is fully stretched and dried up, the brakes haven't been bled, the rear tire is 23 yo and bald.
Last edited by Buffalo_BiL; 06-10-2019 at 11:41 AM.
#18
I had to remove the radiator to do the valve adjustment. Most valves were IN = 0.005 EX = 0.007. Cylinder 4 IN valves were within spec. I did a post adjustment compression test and the numbers went up; 170, 160, 170, 175 (was 150, 150, 150, 175). Cylinder 4 didn't get a bump but that was also the cylinder with the correct IN valve gap. So just curious, where were your BEFORE adjustment numbers? Were you off by more than 1/1000th? and were all valves tight? I just have to hope now that this small change will help with the problems I see and hear where the bike starts to lurch as it warms up and I start to hear a ticking from the motor (which might not be mechanical, but a soft of pinging which perhaps could happen if the valve is partly open during part of the combustion cycle.
Thanks for all of the guidance.
Thanks for all of the guidance.
#19
I had to remove the radiator to do the valve adjustment. Most valves were IN = 0.005 EX = 0.007. Cylinder 4 IN valves were within spec. I did a post adjustment compression test and the numbers went up; 170, 160, 170, 175 (was 150, 150, 150, 175). Cylinder 4 didn't get a bump but that was also the cylinder with the correct IN valve gap. So just curious, where were your BEFORE adjustment numbers? Were you off by more than 1/1000th? and were all valves tight? I just have to hope now that this small change will help with the problems I see and hear where the bike starts to lurch as it warms up and I start to hear a ticking from the motor (which might not be mechanical, but a soft of pinging which perhaps could happen if the valve is partly open during part of the combustion cycle.
Thanks for all of the guidance.
Thanks for all of the guidance.
Added oil to each cylinder down the plug hole and got ; 120, 140, 130, 160.
After adjustment; 155, 200, 180, 200.
I had a hard time getting the comp. gauge to sit securely in cylinder #1 plug hole, because the frame was in my way. So it's measurements are not as reliable.
#20
Last night, and more today…
Got the wheel cleaned up, new tire mounted, new sprockets and chain installed.
Had to hammer out the axle bolt with a dowel rod, it was jammed up with dried crud between the bearings.
Old tire was 23 years old, must have been the last time the axle was out!
Work space after 6 hours!
Lookin' really good!
Had to hammer out the axle bolt with a dowel rod, it was jammed up with dried crud between the bearings.
Old tire was 23 years old, must have been the last time the axle was out!
Work space after 6 hours!
Lookin' really good!