Discussion
phazed said:
What valve clearances are you going to use cold Derek?
Don't forget, time in three times and check four times, you only have one chance!
I have the JP timing gears. Its not that difficult. Having done it fairly recently should be easy. Will double check though, i am checking everything carefully on this one.Don't forget, time in three times and check four times, you only have one chance!
Not got to thinking about lash yet, got work to do on the JE outrigger posts first.
phazed said:
Both Simon and my posts wouldn't fit over the shafts.
We had to ease the insides so they slipped over the shafts.
Why design a part if it doesn't fit?
Maybe they are designed for shafts at the lower end of tolerances.We had to ease the insides so they slipped over the shafts.
Why design a part if it doesn't fit?
John did phone me and said i need to drill open the front posts to 10.3-10.5mm and 8mm deep for the oil supply to be sufficient.
spend said:
If they are alloy pedestals, you want them tight to allow for the differential thermal expansion. Soak them in boiling water and then fit quickly.
I originally heated mine up and fitted them but they were such a tight fit that one split!I then eased the insides until they were a better shrink fit on the shafts.
Right, from memory after a few vinos.
Forget the dots and adjustments.
Find and make your TDC pointer and aim it at your timing disc.
Find TDC, (after setting the cam timing approx).
Set up your dial gauge on the rocker end of inlet, cylinder No1.
Turn crank counting from TDC and the first movement of the dial gauge should be at the setting of the cam specific,(ie, 108 degrees).
If out, move the chain around a tooth or 2 until you get the nearest to it.
When you do, reverse the engine rotation and take the average inbetween clockwise and anti-clockwise rotation.
You will then end up with the inlet starting to open at about 108 degrees before TDC.
Job done.
I usually check several times and end up taking half a day, (including tea breaks)
Forget the dots and adjustments.
Find and make your TDC pointer and aim it at your timing disc.
Find TDC, (after setting the cam timing approx).
Set up your dial gauge on the rocker end of inlet, cylinder No1.
Turn crank counting from TDC and the first movement of the dial gauge should be at the setting of the cam specific,(ie, 108 degrees).
If out, move the chain around a tooth or 2 until you get the nearest to it.
When you do, reverse the engine rotation and take the average inbetween clockwise and anti-clockwise rotation.
You will then end up with the inlet starting to open at about 108 degrees before TDC.
Job done.
I usually check several times and end up taking half a day, (including tea breaks)
phazed said:
Right, from memory after a few vinos.
Forget the dots and adjustments.
Find and make your TDC pointer and aim it at your timing disc.
Find TDC, (after setting the cam timing approx).
Set up your dial gauge on the rocker end of inlet, cylinder No1.
Turn crank counting from TDC and the first movement of the dial gauge should be at the setting of the cam specific,(ie, 108 degrees).
If out, move the chain around a tooth or 2 until you get the nearest to it.
When you do, reverse the engine rotation and take the average inbetween clockwise and anti-clockwise rotation.
You will then end up with the inlet starting to open at about 108 degrees before TDC.
Job done.
I usually check several times and end up taking half a day, (including tea breaks)
Too many vinos?Forget the dots and adjustments.
Find and make your TDC pointer and aim it at your timing disc.
Find TDC, (after setting the cam timing approx).
Set up your dial gauge on the rocker end of inlet, cylinder No1.
Turn crank counting from TDC and the first movement of the dial gauge should be at the setting of the cam specific,(ie, 108 degrees).
If out, move the chain around a tooth or 2 until you get the nearest to it.
When you do, reverse the engine rotation and take the average inbetween clockwise and anti-clockwise rotation.
You will then end up with the inlet starting to open at about 108 degrees before TDC.
Job done.
I usually check several times and end up taking half a day, (including tea breaks)
I have followed 3 or 4 tried and tested methods and the cam is still 4 degrees retarded on 6 degrees advance on the JP.
Need a nights sleep on it.
phazed said:
1 tooth on the camshaft sprocket is not 20°.
You should be able to get within a degree give or take.
1 tooth on the cam sprocket is 10 degrees but this is multiplied by 2 as the crank sprocket is half the size.You should be able to get within a degree give or take.
The cam turns half as fast as the crank. So 10 degrees on the cam = 20 on the crank and thats where the timing is taken from.
Its not possible to flip the crank sprocket and it makes no difference if you flip the cam sprocket.
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