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I took the car out for a nice drive today in 21 deg C weather....about 72 deg F. I was surprised to find the oil cooler fan running when I parked and shut off the motor after some city driving.  Again when home while cruising at about 50 mph I shut the motor off and the fan was on. Sound right / ok ? I'm running 10-30 VR1 Racing oil.

I was drilling a 1/4" hole in either side of the rear bottom of the deck lid " center box" to encourage rain water to drain out naturally en route and heard a strange sound from the right carb. Sort of a Shhhwoosh about 2-3 seconds long. About five minutes later the left carb did the same thing. Weber 48's. Any ideas on that ? Normal ?..I've just never had this setup before. Thanks. 

David Stroud

 '92 IM Roadster D 2.3 L Air Cooled

Ottawa, Canada

 

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The glorious smell of a warm air cooled motor cooling off in a closed garage. If they sold that smell in an aerosol, I'd buy some.

My brother in-law came to visit a few months ago. He came in from the garage and looked concerned. He said that he smells gasoline in the garage!!! He lives in California, and drives a Prius. I told him, that is the smell of performance. Then I explained carburetors to him.

He is also the one who asked if the guns in my house were loaded? I asked him if he had gas in his car?

Last edited by Carlos G
IaM-Ray posted:

That is one smell that women do not like .... the smell of gaz in the garage  

Mine is OK with it. She's a good woman.

Metal shavings, OTOH she is not fond of. You'd be amazed how many metal shavings fabbing anything at all produces, and how they stick to the bottom of almost any kind of shoe. Grandkids crawling around on the floor make this an undesirable situation, I'm told.

Last edited by Stan Galat

Dave, from your description, everything sounds normal.

My external cooler fan (180°F turn on) usually runs down when I turn the key off unless it is quite cold out.  10W40 oil and the oil temp sits around 200°F when running.

The carb shwoosh after 5 - 10 minutes sounds like percolation in the float bowls as someone mentioned.  The bowl liquid rises in temp as the engine heat soaks until it suddenly boils and the rapid evaporation of the vapor cools the bowl and carb off, stopping the boil  There is usually enough fuel left in the bowl that it should start right up.

Last edited by Gordon Nichols
Carlos G posted:

The glorious smell of a warm air cooled motor cooling off in a closed garage. If they sold that smell in an aerosol, I'd buy some.

My brother in-law came to visit a few months ago. He came in from the garage and looked concerned. He said that he smells gasoline in the garage!!! He lives in California, and drives a Prius. I told him, that is the smell of performance. Then I explained carburetors to him.

He is also the one who asked if the guns in my house were loaded? I asked him if he had gas in his car?

I regret that I can only like this once! Good stuff, my friend!

@David Stroud IM Roadster D

"I took the car out for a nice drive today in 21 deg C weather....about 72 deg F. I was surprised to find the oil cooler fan running when I parked and shut off the motor after some city driving.  Again when home while cruising at about 50 mph I shut the motor off and the fan was on. Sound right / ok ? I'm running 10-30 VR1 Racing oil."

All normal, David.  My previous IM with a 2332 did the same thing.  As you know, it's all thermostat controlled to come on at a certain temperature even while driving, and even at what you might think to be decent air temperature.  Every time I parked the car, the fan was running, and would keep running if I left the ignition on for some reason.

I had Henry make the oil cooler fans on my IM6 manually controlled, which gives me one more interesting thing to look after when I am driving.  I sometimes have to operate them even while cruising.

Bob, both you and Cory Drake have opted for a manual fan switch. I'm all for paying attention to your car/gauges but honestly if you overlook this it could have dire $$$$ engine consequences.

I pay attention but having an automatic thermostat just makes sense. My 2 centavos.

David, don't sweat it, my fan runs when I think it shouldn't, and sometimes doesn't when I think it should. But the temp gauge won't lie.

"I'm all for paying attention to your car/gauges but honestly if you overlook this it could have dire $$$$ engine consequences."

That's the same reason I made mine automatic, too.  I never want to casually glance at the temp gauge (semi-accurate, though it is) and suddenly find that it's pinned to the right because I forgot to look earlier and turn on the cooler fan.  I don't have to turn on the cooling fan in my daily driver, so I don't in my Speedster, either.  At less than $30 USD, it's really cheap security that I never think about.

Besides.......    I'm getting forgetful as I get older.  Now where the hell is my 10mm wrench?

I am all in for automaticity,   Hence my auto alarm previous discussion if the engine gets warm.  BTW the unit suggested by another member here is a bolt on to the tranny  & the engine if you buy the two sensor model and you get an alarm that you set at say 5 degrees higher than normal the BEEP will wake you up to turn on the switch if your circuit is not automatic with a temp guage or if the temp guage fails.  Ok, I convinced myself today and will order it up.   I hate to see the needle GO RIGHT.. 

Finally,  you could also add an overide switch if you feel more comfortable having an overide switch in case your towing  with your 356 or simply idling and don't trust the automatic feature or simply if the automatic feature won't work ...

I guess some might want an emergency measure, alarm anyone ?

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