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914 rocker arm question

Hi again everyone

Iím rebuilding my 2.0 L 914 type 4 and when I position the rocker arms on the shaft they donít align up with the valve stems nor the push rods. Note that on each end of each rocker there is where the shaft slides in an extended boss so to speak.

I have been positioning each rocker on the shaft such that these extended bosses are oriented in the middle facing each rocker. Thus between each rocker the washers each abutt against each rocker with the spring in between.

Does it matter if this extended boss of each rocker is oriented in the middle if not will my rockers align up. Additionally, from some photos Iíve seen on the web there appears to be two different kinds of rockers. The difference being the angle between the shaft and a line you draw from the adjuster to the cup on the push rod tube.

Dave or Dr 914 can you please chime in.

Thanks

Old 01-05-2020, 07:58 AM
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Does the rocker box look like this?



If not, you're probably using the rocker arms in the wrong locations.

--DD
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Old 01-05-2020, 07:29 PM
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914 rocker arms

Dave itís not real clear. Do the flat washers go between the rockers and the spring
Old 01-05-2020, 07:54 PM
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I'll defer to Dave or George, but just to be clear, the intake and exhaust rockers are different part numbers- make sure you have one of each on each shaft and the exhaust is always to the outside of the head.

Yes, the thrust washers go on the inside of each rocker with the spring between (you have it right).
Old 01-06-2020, 11:31 AM
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Rockers

Ok, thank you theer
Old 01-06-2020, 04:01 PM
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the first thing I would think is that the rocker arms were not in alignment, there are intake and exhaust rocker arms and they are different. Next thing is to make sure that the pushrods are seated into the lifters as this will cause misalignment as well


Quote:
Originally Posted by jess p View Post
Hi again everyone

Iím rebuilding my 2.0 L 914 type 4 and when I position the rocker arms on the shaft they donít align up with the valve stems nor the push rods. Note that on each end of each rocker there is where the shaft slides in an extended boss so to speak.

I have been positioning each rocker on the shaft such that these extended bosses are oriented in the middle facing each rocker. Thus between each rocker the washers each abutt against each rocker with the spring in between.

Does it matter if this extended boss of each rocker is oriented in the middle if not will my rockers align up. Additionally, from some photos Iíve seen on the web there appears to be two different kinds of rockers. The difference being the angle between the shaft and a line you draw from the adjuster to the cup on the push rod tube.

Dave or Dr 914 can you please chime in.

Thanks
Old 01-08-2020, 09:06 AM
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BTW the valve adj. tips SHOULD be slightly offset to the tops of the valves to promote rotation.
To go deep into adjusting valve alignment, correct geometry & extract the last oomph of performance from your setup, the trick is to mill the shaft clamps and use the shims to adjust rockers location & provide a rotating surface on both sides of the rockers

Old 02-12-2020, 07:16 PM
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