<VV> Hot starting advice

[shortle]

The insulators were introduced to make hot starts easier as they get the carbs a little further away from the cylinder heads. I have upper and lower gaskets sandwiching my insulators. Make sure they are the same thickness. This may not be a "cure all" but is just 1 of the things that can contribute to hot start issues.
Timothy Shortle in Durango Colorado 81301 


-----Original Message-----
>From: chuck mckinley <cmckinley313 at verizon.net>
>Sent: Mar 18, 2012 10:37 AM
>To: shortle <shortle556 at earthlink.net>
>Cc: BobHelt at aol.com, virtualvairs at corvair.org, chuck mckinley <cmckinley313 at verizon.net>
>Subject: Re: <VV> Hot starting advice
>
>The car typically sits the order of 10-15 minutes (and stays hot.) I
>only have to crank the engine for one second or less, just a couple
>turns of the starter - as I say, it's really no big deal. It's just that
>it starts with a big load of gas from the accelerator pump, so it starts
>up with high rpm and makes me look like some kind of high-school Harry
>in the parking lot! The choke has definitely come off by the time this
>is happening. I guess I mis-stated the item about the unloader. I just
>put in new plugs (NGK) gapped to .035 per instructions. I do not have
>insulators under the carbs, just the thin gaskets that came with the
>rebuild kits. I had the thick insulators on the car prior to the carb
>rebuild, but they pretty much fell apart when I pulled the carbs, as
>they'd been there for about six years. I got the rebuild kits from a
>FLAPS, not Clark's, else I would have ordered the insulators. If they're
>considered crucial I'll get a pair.
>
>Chuck
>
>On Sun, 2012-03-18 at 10:20 -0600, shortle wrote:
>> Hi Chuck,
>> Of course Bob Helts book on identifying and rebuilding Corvair Rochester carbs is invaluable and has helped me a number of times. 
>
>> You failed to mention how long your car sits before this occurs and how long you have to crank the engine before it will start. 
>
>> (When you mention "unloader" it leads me to think your car is actually cooled off enough for the choke to be involved). 
>
>> Is your choke adjustment too stiff? Try disconnecting both choke rods after car warms up and see if this issue is still there? 
>
>> Do you have the insulators under the carbs? 
>> Do you have the correct spark plugs with the proper gap? Just a few thoughts from cold and chilly SW Colorado.
>> Good luck and please post results and findings. 
>> Timothy Shortle in Durango Colorado
>> PS You also maybe close to Corvair Master Technician Spence Shepherd if worse comes to worse
>>  
>> 
>> 
>> -----Original Message-----
>> >From: BobHelt at aol.com
>> >Sent: Mar 18, 2012 10:02 AM
>> >To: cmckinley313 at verizon.net, virtualvairs at corvair.org
>> >Subject: Re: <VV> Hot starting advice
>> >
>> >chuck,
>> >It could be any number of causes. Most likely is that the carburetors  
>> >floats are set too high allowing the fuel in the bowl to be too high. This can  
>> >cause engine heat to percolate the fuel and run raw gas into the engine 
>> >after  shut off.
>> >Another possibility is that you have carburetors that lack sufficient  
>> >venting to disipate fuel fumes after a hot shut down. This is explained in  my 
>> >book on H and HV carburetors. It wasn' t until 1964 that Chevrolet got the  
>> >venting problem fixed. If that is your problem, then get a pair of 1964 or  
>> >later carburetors for your engine.
>> >Regards,
>> >Bob Helt
>> > 
>> > 
>> >In a message dated 3/18/2012 7:36:52 A.M. US Mountain Standard Time,  
>> >cmckinley313 at verizon.net writes:
>> >
>> >However,  when I drive somewhere far enough to get the engine warmed up
>> >and then park  (on grocery runs, etc.), I have to use the technique of
>> >flooring the  accelerator to engage the unloader to start it up again. It
>> >always starts  without hassle, so maybe there's no real issue, but I'm
>> >wondering if  there's any tweak that can be made to minimize  this
>> >pattern
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