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New to me 4D55
Just received new to me 1983 D-50 with 4D55 last weekend plan on dropping into the GW. Previous owner had it sitting for a few years before installing 56 head with roller rockers now it will not run.
Questions:
1. Is a D56 cam "Required" since it has roller rockers. Can I use D55 stock cam or do I have to have it reground for roller use.
2. Is the barring kit "Required" to set injection pump timing. I know it is always recommended but do I really NEED it..
3. Will spill port timing work with this motor and injection pump.
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Senior
Array
normally you want a roller cam for roller rockers, as the cam profile is easier on the wheels, slippers and jump.
not having the tool to set the timing can melt cylinders, i have heard you can go by the tone of the knock to get it close, however i have not touched timing
if he had the injection pump off (obviously) you will probably need to bleed the injection lines
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