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Old 10-11-2009, 08:58 AM   #1
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Default heating a motor for break in?

what are a few options to heat up a motor during break in before starting it?
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Old 10-11-2009, 09:18 AM   #2
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http://www.amainhobbies.com/product_...gar-9-Heat-Gun
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Old 10-11-2009, 09:28 AM   #3
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If you're some where in socal Harbor Freight tools has a good heat gun
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Old 10-11-2009, 09:30 AM   #4
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Any tips for avoiding the carb while heating the head and case?
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Old 10-11-2009, 09:32 AM   #5
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Don't point the heat gun at the carb.

You could put a piece of cardboard between the head and carb.
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Old 10-11-2009, 09:37 AM   #6
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Default Hot pad

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Originally Posted by makaluch View Post
Any tips for avoiding the carb while heating the head and case?
I grabbed an old hot pad from the kitchen and I lay that over the carb so I don't melt it. Be careful when heating the engine. If you concentrate the heat right on top of the head you can get it too hot and warp the head. You want to disperse the heat evenly on the top, sides and on each side of the case. Give it a minute or two to soak evenly into the engine. Make sure your piston is at BDC when heating the engine.
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Old 10-11-2009, 10:02 AM   #7
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will a hair drier get it hot enough as a temp fix?
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Old 10-11-2009, 10:05 AM   #8
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I've seen hair driers get motors to 150-180. Not hot enough. Spend the $10-20$ and get the heat gun. You've spent enough on buying a motor to not spend a tiny bit more and have an engine that will last.
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Old 10-14-2009, 12:09 AM   #9
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Default hmmm

no need to heat a motor. It will warm up all on it's own. Unless it wont start. I don't use calipers or temp guns either, and I don't change setups every day. Still win races and get 10 gallons from my motors without worrying about runtime. Huge box of tires? nope. I do clean my car really well.
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Old 10-14-2009, 01:51 AM   #10
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Default wise words

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no need to heat a motor. It will warm up all on it's own. Unless it wont start. I don't use calipers or temp guns either, and I don't change setups every day. Still win races and get 10 gallons from my motors without worrying about runtime. Huge box of tires? nope. I do clean my car really well.
exactly!

by the way how u cleaning the car?
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Old 10-14-2009, 02:40 AM   #11
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I genereally heat mine up until break in is done.. then if possible for a few more tanks. But by that time im running it down the track.. so dont have power to use the heat gun.. But Heating a engine on break in makes it x2 as easy to do that.. cold.. years back breaking my 1st Go engine.. Toke me over a hour to start it. because of the pinch... but I dont think many do it that way anymore.. or did lol.. but I didnt know any better..
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Old 10-14-2009, 03:04 AM   #12
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Quote:
Originally Posted by merdith6 View Post
no need to heat a motor. It will warm up all on it's own. Unless it wont start. I don't use calipers or temp guns either, and I don't change setups every day. Still win races and get 10 gallons from my motors without worrying about runtime. Huge box of tires? nope. I do clean my car really well.
+1 to everything this guy just said...

lots of overrated techniques out there
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Old 10-14-2009, 04:47 AM   #13
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will a hair drier get it hot enough as a temp fix?
I use one to get the engine to 180 the first heat cycle and 150 the next 2. After that then just straight starts.
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Old 10-14-2009, 06:26 AM   #14
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I use a hairdryer to pre-heat the engine to at least 150F, and continue to do that until there is little to no chance of the piston sticking at TDC when cold. That could take up to a gallon of fuel, depending on the engine.
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Old 10-14-2009, 06:28 AM   #15
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I heat the engine head and block when breaking in the engine and until the metal pinch is gone. I also use a heat gun when the weather is cold. I race in a winter series and in the morning it's usually in the 30's engines don't like to start when it's that cold outside.
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