Cam/head Install Question
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Joined: Sep 2009
Posts: 95
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From: Pittsburgh/Butler PA
They are XER lobes. I do not have the stock rockers, when i bought the car it had the cranes on them with a vinci camshaft. I just took the cam shaft out tonight. With my cam, should I get new rockers or keep the cranes?
Team Owner
Joined: Mar 1999
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From: At the beach in little Rhody
I would not run Crane 1.8 rockers on the XER lobes, I think you are asking for problems both from a valve train control standpoint and longevity of the setup. The XER has a pretty fast closing ramp and using the Cranes, which at closing are almost a 1.9 ratio, may be pretty hard on the valves as well.
If you don't have the original stock rockers, you have two choices. First, pick up a new set of stock rockers. You may be able to find used ones but from what I understand they were updated to eliminate the issue of them losing bearings so I would personally go with new rockers since you would want to install new bearings in a used set anyhow. You will also need two rocker stands. Again, if you want to optimize the rocker geometry with stock rockers there are aftermarket stands that allow some machining to reduce height and are easier to shim should that be necessary to correct the geometry.
Second option would be Yella Terra rockers. These rockers are fairly light and easy to control. If you are installing an aftermarket head with bronze valve guides, these would be my first choice.
Either rocker will quite honestly simplify your setup and installation as compared to the stud mounted Crane setup.
What heads are you installing?
If you don't have the original stock rockers, you have two choices. First, pick up a new set of stock rockers. You may be able to find used ones but from what I understand they were updated to eliminate the issue of them losing bearings so I would personally go with new rockers since you would want to install new bearings in a used set anyhow. You will also need two rocker stands. Again, if you want to optimize the rocker geometry with stock rockers there are aftermarket stands that allow some machining to reduce height and are easier to shim should that be necessary to correct the geometry.
Second option would be Yella Terra rockers. These rockers are fairly light and easy to control. If you are installing an aftermarket head with bronze valve guides, these would be my first choice.
Either rocker will quite honestly simplify your setup and installation as compared to the stud mounted Crane setup.
What heads are you installing?
Last edited by vettenuts; Apr 7, 2011 at 04:57 AM.
