I use a new chain, a new crank sprocket, and an adjustable cam
sprocket so I can more easily degree the cam. A street car doesn't
need the luxury of the adjustable sprocket because hopefully it
doesn't have to come apart as often as a race car.
I find that the new parts are okay, but the cam sprockets do not have
the holes drilled the way the old ones did, which allowed you to get
the cam timing pretty close. The new ones are drilled exactly
symmetrical, so you can only set the timing as close as one tooth
difference. I believe you must also put your own mark on it for the
next disassembly.
At 01:55 PM 12/21/2007, you wrote:
>Listers,
>
>I attempted to fit a new timing chain to a TR4 engine this morning.
>It's loose as a goose, so I suspect that new crank and cam
>chainwheels are in order, part nos. 55971 and 57113.
>
>I'm always leery of repro parts, so wonder what's out there for this
>application.
>
>Does anyone have any experience with the currently available items?
>
>What are the FOT guys using?
>
>Thanks,
>
>Ed Woods
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