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Tractor Pulling Discussion Forum

Re: dc case build

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Gary Baker

10-22-2013 15:30:35
70.194.0.224



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You need to upgrade to a 400, superior tractor. Ive owned them both




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mEl

10-22-2013 15:57:07
71.245.12.46



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 Re: dc case build in reply to Gary Baker, 10-22-2013 15:30:35  
I agree with Gary, the DC will make great HP but the block has its limitations, we solved the rear main issues but the center main saddle will also pull out of the block as well. The 400 has a 5 main engine and vastly better gear selection. The big stroke big bore Case blocks are just now being developed by builders like Gary. Strokes of over 7" are the norm and the later engines can hold near 200 more cubes than a D series block.

Dollar for dollar the later engines just make more sense.

BTW, Doug is a great friend and we have no competetion between us, we share info via phone regularly and I have personally visited his place and seen his stable of tractors. Our associations back East here allow for more lax rules using speed limits rather than RPM limits which allow for some design differences. We just take advantage of the rules we are given to work under.

mEl
This post was edited by mEl at 16:04:29 10/22/13.

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a dalton

10-22-2013 17:01:27
75.200.142.171



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 Re: dc case build in reply to mEl, 10-22-2013 15:57:07  
Will a 400 engine couple to my DC bellhousing because I have an engine but no rear end



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mEl

10-22-2013 17:34:32
71.245.12.46



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 Re: dc case build in reply to a dalton, 10-22-2013 17:01:27  

No, they are completely different animals, there are really no similarities



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a dalton

10-22-2013 17:58:40
75.200.142.171



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 Re: dc case build in reply to mEl, 10-22-2013 17:34:32  
You said you fixed the rear main problem what needs to be done to fix it and is it possible to turn my engine 4500 rpms with a stock stroke and a 4.5 bore and balance work



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Gary Baker

10-23-2013 02:20:43
70.194.3.235



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 Re: dc case build in reply to a dalton, 10-22-2013 17:58:40  
Your gunna get hurt. 4500 rpm's on a DC Case? Get a different hobby while you still can



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a dalton

10-23-2013 07:16:16
70.193.9.0



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 Re: dc case build in reply to Gary Baker, 10-23-2013 02:20:43  
I"m turning 3000 rpm with a stock motor I don"t see why I couldn"t get 1500 more out of it with a lot of balance work and a good set of rods and cam



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north puller

10-23-2013 09:55:29
207.219.69.203



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 Re: dc case build in reply to a dalton, 10-23-2013 07:16:16  
Let's say your flywheel comes apart and hurts or kills a bystander. Their family is going to sue the sled owner/operator, the property owner, the pull promoter, and you the tractor owner/driver. Do you have personal liability insurance that specifically covers tractor pulling? If not, 4500 rpm could cost you your house and some jail time. Sure it's worth it?



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gfs

10-23-2013 10:48:45
98.65.209.59



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 Re: dc case build in reply to north puller, 10-23-2013 09:55:29  
well since they make steel flywheels and clutch components, scatter blankets and tie bars you are really talking nonsense. I would think if 4500 rpms are your goals then you would consider those items part of the build process. Maybe in your little world nobody runs over stock rpm's but personally many tractors run over 3000 and don't come apart because they were built with this figure in mind.



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a dalton

10-23-2013 12:52:58
70.193.9.0



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 Re: dc case build in reply to gfs, 10-23-2013 10:48:45  
I have to agree with gfs I already have a 1030 case that has a 504 engine in it turbocharged that is turning 5500 but it had the proper safety equipment to stand this many I have never fooled with smaller case and didn"t know the precautions I needed to take to do this



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where does it stop

10-23-2013 10:02:42
192.43.65.245



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 Re: dc case build in reply to north puller, 10-23-2013 09:55:29  
What if it comes apart at 1200RPM's? Will the same sue-happy society still prevail?

Might as well stop now.



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dboll

10-23-2013 12:34:53
209.23.168.131



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 Re: dc case build in reply to where does it stop, 10-23-2013 10:02:42  
just remember at 1200 rpm's the engine is under the rated rpm's for that engine at 1390 or above a sharp lawyer could exploit that fact, as for multiplying centrifical force doubling the rpm's quadruples it so if the formula holds true at 4500 it would be almost 16 times the force, if anyone wants to discuss the issues I had to overcome building a 4 5/8x6.5 I am always willing to talk but if someone wants to build a spinner please call someone else

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A.P.

10-23-2013 08:43:08
65.183.164.82



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 Re: dc case build in reply to a dalton, 10-23-2013 07:16:16  
Get a trans-blanket, steel flywheel and aftermarket clutch and pressure plate (SFI recommended) and maybe a set of tie bars to tie the engine and rear end together. The engine's internal parts are a lot less likely to hurt/kill someone than if any portion of the flywheel assembly comes apart. 4500 rpm is roughly three times stock or nine times the stress the flywheel was designed for.



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