[Healeys] Perhaps throw out bearing?

[Bob Spidell]

I second Richard's suggestion. Though SU carbs are (alleged to be) 
somewhat air density/elevation compensating, your engine runs 
richer--due to less-dense air--on hot days and will lug. If your 
pseudo-choke mechanism is adjusted properly you can pull the 'choke' 
knob out to open the throttles up a little (first half of travel is only 
opening throttles, second half lowers jets to enrichen mixture). When I 
know I'll be running at altitude, above 6K feet or so for a while I'll 
open the slow-run valves a half-turn or more.

I think a shot release bearing would make a perceptible grinding noise.

bs


On 7/31/2024 1:28 PM, richard mayor wrote:
> One more thing to consider.  When you step on the clutch you are 
> pushing the crankshaft forward and into the thrust washers that are 
> mounted between one of the main caps and crankshaft. It is metal to 
> metal contact.  This will tend to slow the engine down.  If your idle 
> speed to too low then this can cause your engine to stall.
>
> Richard Mayor
> boyracer466 at gmail.com
>
>
>
>> On Jul 31, 2024, at 11:43 AM, Robert Markovich via Healeys 
>> <healeys at autox.team.net> wrote:
>>
>> I have two suggestions. The first is one I recommend for all Healeys 
>> and for that matter all vintage cars: Install a pusher fan in front 
>> of the radiator with a switch you control yourself to keep things as 
>> simple and foolproof as possible. These can mount on the front cross 
>> brace or Wizard sell radiators with the fan attached. The second is 
>> that your stalling problem may be related to the thrust bearings 
>> which are directly affected when the clutch pedal is depressed—a 
>> reason starting the Healey in neutral without touching the clutch is 
>> recommended.
>>
>>
>> Sent from the all new AOL app for iOS 
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>>
>> On Wednesday, July 31, 2024, 1:59 PM, Dennis Gavin via Healeys 
>> <healeys at autox.team.net> wrote:
>>
>>     I’m attempting to understand what my problem is with my BJ7. When
>>     I was in bumper to bumper Cape Cod traffic approaching the bridge
>>     the engine heated up to about 200 degrees. Not bad for a 90
>>     degree day and barely moving. It was very difficult to get into
>>     1^st or 2^nd gear and became more difficult as it heated up. Also
>>     when I pushed the clutch to disengage the idle would slow down
>>     and stall. I could keep it going by adding more gas  and if I put
>>     it in neutral and let the clutch out it would recover to good
>>     idle immediately. Could this be the throw out bearing becoming
>>     difficult or what do our experts suggest. It became almost
>>     impossible to drive so I pulled over and let it cool down for
>>     about 45 minutes. I met so many people stopping to offer help or
>>     water or just to chat as the traffic was so slow you had the time
>>     to chat. Let me know what you think and, as always, I’m very
>>     thankful to this group that has been so helpful to me for years.
>>
>>     Dennis Gavin
>>     Mashpee, MA
>>
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