[Healeys] Selecting a replacement CAM for BJ8

drmasucci at comcast.net drmasucci at comcast.net
Sat Apr 15 05:12:46 MDT 2017


Hi All, 

Well now that spring is here, I am resuming the rebuild of my BJ8 engine. The engine was rebuilt back in 1999, but since I'm doing a full resto of the car, I decided to take a look at the engine. While all other parameters were well within spec, the cam and lifters were damaged. Back then I didn't know much about modern oils and the lack of zinc, and since that's the only part of the engine that didn't do well, I am assuming that must be why. 

So I am now trying to decide what to do. I can have my cam reground, or buy new. Since I believe it was already reground and based on the wear, I am thinking maybe new is the best choice. I am looking for stock or mild tune only. 

I am not a pro engine builder, but I know the basics and am not new to the process. I know that if I change something like the cam parameters, I need to understand how that affects the rest of the valve train. I looking for guidance on selecting the right components. 

I am considering the Welch DWR8 cam and lifter package. I understand that I will have to machine pockets into the block for valve clearance. I will be having the head rebuilt to basic stock parameters as far as the valve gear is concerned. I need to determine how to select the correct pushrods. Since this cam is drilled to feed oil to the lobes, do I need to make other modifications to support that feature? 

So I'm looking for some feedback and recommendations from the list. Has anyone followed a similar path on their 6 cylinder Healey? Any opinions, cautions, or advice would be appreciated. Is this cam my best choice? Also if there are better options to consider I'd like to hear that also. 

As usual, thanks in advance for any help. 

Dave 
64 BJ8 
72 XJ6 
72 Bonneville 




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