Too much crankcase gas is a symptom of excessive "blow by" at the rings.
On May 28, 2006, at 9:23 AM, John Snyder wrote:
> I currently have two tri-carb Healeys + just sold another one. All
> have freshly rebuilt engines w/ mileage ranging from 250 to 5000.
> None of these cars have the smell at all. So, I don't know what the
> problem is, but it is not due to the tri-carb set-up.
>
> John Snyder
>
>
>> I have not driven my tricarb any great distances since it's
>> conversion back to
>> triples and it's rebuild, -but in driving around town, and while
>> working on
>> it, running, -I have noticed that there is appreciably more exhaust
>> smell from
>> the crank case and valve cover vent, than there was when the car had
>> the twin
>> HDs on it.
>>
>> It is not to the point where it produces headaches or other symptoms,
>> --but
>> the smell is there, and it is definitely coming from the screen on
>> the air
>> filter on the rear carb. --Is this fairly typical of the tricarbs
>> out there?
>> I'm aware that the pancake air filter does not create much of a
>> vortex to suck
>> the vapors into the carb, and that there is approximately 34% less
>> air flow
>> into the carb throat than on a dual carb setup.......
>>
>> Is this all I am dealing with? (I'd hate to "gas" myself,
>> unaware...). Is
>> there a means to measure the venting volume from the hose, or to
>> determine if
>> the output is too high? --Any solution for improving the draw on the
>> carb, to
>> reduce the escaped vapors?
>>
>> (Engine is practically new from rebuild, and compression is excellent)
>>
>> David W. Jones
>> '62 Mk II BT7 tricarb
>> Cumberland, RI USA
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