Kurtis :
I can't say if your engine should have any emission controls or not, but
even if it should, a '63 would have the connection from the valve cover to
the air cleaners, not to the intake manifold. There was a special air
filter used, with a fitting in the center for the crankcase vent line.
(Last I checked, replacement type filters with this fitting were not
available, and original filters were quite expensive.)
IMO you should check for the presence of a road draft tube. With the
'breather' cap, you should also have the road draft tube. If the tube is
not present, there will be a plug that you can pry out and fit a tube.
Don't know if new ones are available, but used ones are plentiful. Unless
exact originality is important to you, I'd stick with the open system. The
early closed systems all had problems of one sort or another, IMO the only
good alternative to an open system is a full PCV system with a filtered
fresh air intake for the crankcase, linked to the engine air intake so that
blowby is routed into the carbs when there is no manifold vacuum. (AFAIK no
wet liner engine was ever fitted with such a system by the factory.)
Randall
> -----Original Message-----
>
> Greetings...
>
> I have recently purchased an early 1963 TR4, and have an emissions system
> question. When I purchased the car, the PO indicated that the
> idle was set a
> little high (actually around 1300 RPM). When I tried to adjust it down to
> normal, I quickly learned that the engine would not idle any
> lower. It didn't
> take me long to figure out that the problem was the unconnected
> hose leading
> from the top of the intake manifold. There is also a hose
> connection point on
> the top (not the side as I've seen on TR4s w/ emissions control). The oil
> filler cap is the open circuit breathing type, and there is no
> sign of a PCV
> valve. The car has the SU type H6 carburetors with the standard air
> cleaners.
>
> I simply plugged the intake manifold and valve cover holes with
> an appropriate
> sized bolt (they both had threaded inserts w/ a hose connection). The car
> seems to run fine now with a good idle.
>
> Base on all the information I can find, this car should not have
> an emissions
> control system. Does this sound right? Is there any way I can
> verify this?
> Also, does what I done to this point seem reasonable?
>
> Thanks in advance for any info/help!
>
> Kurtis Jones
> 1963 TR4
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