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Tractor Pulling Discussion Forum

Who needs a girdle?

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OutClast

02-22-2004 17:31:17




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What is the purpose of a girdle? How do I know if I need one?




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OutClast

02-23-2004 19:51:24




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 Re: Who needs a girdle? in reply to OutClast, 02-22-2004 17:31:17  
Thanks guys for you help in explaining! It sounds like 20% over stock RPMs shouldn't need one.



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CASEPOWER

02-23-2004 07:59:31




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 Re: Who needs a girdle? in reply to OutClast, 02-22-2004 17:31:17  
As stroke is increased leverage is added and it all goes back to the main bearings. Different brands may require different things when the block is modified depending on its design. Case DC engines are known to take the rear main completely off the block if you get some big cubes. If your gonna build it, build it to last or your wasteing your money, but then again it is your money!!



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TimC

02-23-2004 06:46:11




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 Re: Who needs a girdle? in reply to OutClast, 02-22-2004 17:31:17  
If you bore out a block until there is no real structural support on the bottom end you stand the risk of splitting it down the middle. It doen't mean it will come flying apart but more likely you will have water in the oil as the first sign something is amiss. Many other reasons but most likely an antique pulling no more than 30% over on RPMs would not need a girdle unless you are using exceptionally large bores.

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LW

02-23-2004 05:23:30




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 Re: Who needs a girdle? in reply to OutClast, 02-22-2004 17:31:17  
A reinforcement device that is used when you exceed the mechanical limitations of what an engine was intended for, also as preventive failure, building something on the edge with out it, if it comes apart you will realize you may need it after all.If you are concerned wouldn't it be cheaper to do it to start with?



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Wisconsin 88

02-22-2004 22:14:10




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 Re: Who needs a girdle? in reply to OutClast, 02-22-2004 17:31:17  
The girdle is for keeping the "extra materials" of the "Corn fed husky honey" held into a certain position, thus MISLEADING the unsuspecting horned up redneck into believing he is trying to take home a Porsche, when in actuality it is a one ton suburban. Now this being explained, you should be able to understand how the term "girdle" relates to an engine, basically that sucker is going to hopefully keep all the crap inside from popping out for that horned up redneck to see while he is watching the pull, drinking his beer, sitting in the cool shade of his suburban!!!

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Redman

02-22-2004 19:15:25




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 Re: Who needs a girdle? in reply to OutClast, 02-22-2004 17:31:17  
what are you doing?gas or diesel?turbo?it depents what you are after,on a IH diesel you don't need one until you get past 100psi of manifold pressure unless you are big cubes.



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FULLPULLER#1

02-22-2004 18:30:31




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 Re: Who needs a girdle? in reply to OutClast, 02-22-2004 17:31:17  
A girdle is suppose to "hold" the motor's lower end together at higher RPM's,,so they say,,
In my opinion if the motor is built RIGHT you won't need a girdle.
A girdle is a bandage for so-so engine work it ties the block and mains together,it goes between your block and oil pan, it makes me think of shabby work when I see one on an antique tractor,,,,so I say,,,.
If you are turnning 6000rpm on an antique,,you might need a girdle.
If your building a motor and useing so-so parts,,you mite need a girdle.
If your motors crank and rods were not ballanced,,you mite need a girdle.
If your turbocharged and running high RPM's,,,you mite need a girdle.
If you don't like the way your tractor looks after it's painted,,,you might need a girdle,,,(hahaha)
All fun aside get your engine built right the first time and use good parts and have someone that KNOWS what there doing and will build to your pulling needs,If you want the right answers to engine building ask FARMALL on this site,he KNOWS his stuff on engine build up's.

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common sense

02-23-2004 06:00:35




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 Re: Re: Who needs a girdle? in reply to FULLPULLER#1, 02-22-2004 18:30:31  
All of your answers are right, but I believe the amswer we are all looking for is. This is a safety advice that should be used any time a engine exceeds 20% above normal operating rpms



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