SE Head Lower Rocker Boxes

[WhipLash96]

OK, I am doing some clearance checking for my 124. I am using a set of 09 CVO SE heads. I am also using the stock rocker boxes which came off an 01 A engine. Is there a difference? I am looking at these and man are those springs really close to hitting. I am just curious if they are different or not. Thanks.

[SP33DY]

Use the tapered oil pump alignment bolts to hold the lower rocker box in place. Then check around the spring retainers with a "wire" type of spark plug gage. If .050" gage goes through without binding you're good. Otherwise grind a little bit of clearance into the lower r.b. and re-install it using the oil pump alignment screws to properly maintain the same clearance.

[TXChop]

The old rocker boxes are tight. I use a zip tie and make sure i can easily fit that around the spring when torqued. IF not grind away as needed. The new boxes are much easier to work with bigger springs.

[Don D]

Use reduced diameter springs or conical.

[rbabos]

Been a while now but I seem to remember back in 09 the 110s had clearanced lower boxes around the springs.
Ron