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jeffrey10x2
Joined: 23 Oct 2010
Posts: 15
Location: duncansville,pa
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 Posted: Wed Jan 26, 2011 6:32 pm Post subject: lean out valve |
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would it be a good idea to install a lean out valve when going to E85 for the cool days to get heat i the motor?
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72 camaro
PAR race engines 461 cu in BBC |
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hotrod
Joined: 19 Apr 2005
Posts: 872
Location: Colorado
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| Posted: Wed Jan 26, 2011 9:28 pm Post subject: |
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Depends on your situation. What sort of setup are you talking about, a pure racing vehicle or a street vehicle?
If a street vehicle I would just put a proper thermostat in it to ensure it warms up properly. Perhaps install a bypass valve that allows the coolant to go around the thermostat so you could cool the engine down when ever you wanted by opening the bypass.
Racing only ---- Mmmmm perhaps but I would be worried that someone would accidentally leave the switch in lean mode or it would fail to close properly and you'd burn a piston.
In a racing situation I would prefer a block heater and a portable generator to get the engine up to a good operating temp. The other option would be to completely block the radiator with a piece of tarp held in place so there is no chance you would run without taking it off.
If I did a lean out valve I would have a great big idiot light showing the valve was open where the driver could not miss it.
Larry |
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Eric68
Joined: 01 Nov 2007
Posts: 331
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| Posted: Fri Jan 28, 2011 6:21 pm Post subject: Re: lean out valve |
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| jeffrey10x2 wrote: | | would it be a good idea to install a lean out valve when going to E85 for the cool days to get heat i the motor? |
In my opinion no. Its better to leave the carb tune alone and use a thermostat and an electric fan that is on a thermostat.
If you get the tuneup right an E85 carb will be lean enough to build heat at part throttle and rich enough to be happy and fast going down the track.
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E85 racer and E85 carb builder
www.horsepowerinnovations.com
E85 powered 68 Camaro street car
Best ET on motor 9.96 @ 133 MPH, 5.92 on N2O in the 1/8th |
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ron
Joined: 27 Feb 2009
Posts: 16
Location: NY
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| Posted: Sat Jan 29, 2011 11:38 am Post subject: |
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jeffrey10x2
In a RACING situation you can use a very simple and easy to install 3/8 ball valve mounted on your colum, blumbed to carb vac port, spacer or drill and tap the back of manifold for a 3/8 barb to use for a vac source.
This should help get the motor to temp quicker in cold air and if you should forget to close it at full throttle, a vac leak that close to carb would not lean motor. This works for me in the late fall in Buffalo when air temp is in the forties. Hope this is of some help. Ron
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