Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Discussion Forum

JD 4630, and 730 diesel

Welcome Guest, Log in or Register
Author 
Paul K.

05-28-2002 20:09:32




Report to Moderator

I have some thoughts wandering around in my head as in to how much will these tractors take.. i know alot. but how much.. i have a 730 diesel and a 4630. both beautiful tractors..wouldnt trade them for any other color.. not even for a million bucks. but anyways. i kinda have went towards the tractor pulling stage. i was wandering how much horses can i get out of a 730 with out TOO much money and how much would both of the 4630's and 730's rear ends take of horse power... like the 730. how much could i turn it up to , to where it would probably wrech the rear end. same with the 4630.. how much horses could i take these both up to, before i have to worry about hurting them. thanks for any info.

[Log in to Reply]   [No Email]
JDJIM

05-29-2002 21:45:56




Report to Moderator
 Re: JD 4630, and 730 diesel in reply to Paul K., 05-28-2002 20:09:32  
Had a 730D but never pulled with it so I don't know how they would do . If I remember a good old 730 would have close to 70hp . I did pull quite a bit with a 4630 in late '70's . Used to pull in the 14 and 16,000lb classes . It pulled better in the 16 , it had better ballance , could get more weight on back end . There were some 225hp 16,000lb classes back then . Later they did away with the dyno and let you open em up . From then on it became kind of a "run what you brung " deal and who spent the most won the most . I used to turn the "smoke screw" in till it was even with the lock nut , I would count the turns from where I started so I could turn it back out later for going back to the field . I used to run the 4630 about 200hp for farming . I don't know how much hp it had wide open like that I was chicken to dyno it that high , I do know "DO NOT RUN IT VERY LONG" if you want to keep it living . I don't know what kind of rules you have in your area , but if they are pretty close to out of the field a 4630 should do decent in a heavy class . The class STOCK has a lot of different meanings today seems like to me . G-MAN covered a lot about the 4630 and I'll add that when you up the hp make sure your trans pressure and clutch pressure is up to spec or a little over so you don't slip something .

[Log in to Reply]  [No Email]
Duben

05-29-2002 20:08:20




Report to Moderator
 Re: JD 4630, and 730 diesel in reply to Paul K., 05-28-2002 20:09:32  
The 730 has a real low first gear. I easily run out of traction before power with mine if I pull in first. You might try it just the way it is before making any changes.



[Log in to Reply]  [No Email]
Duben

05-29-2002 20:08:13




Report to Moderator
 Re: JD 4630, and 730 diesel in reply to Paul K., 05-28-2002 20:09:32  
The 730 has a real low first gear. I easily run out of traction before power with mine if I pull in first. You might try it just the way it is before making any changes.



[Log in to Reply]  [No Email]
G-MAN

05-29-2002 10:56:32




Report to Moderator
 Re: JD 4630, and 730 diesel in reply to Paul K., 05-28-2002 20:09:32  
Paul, I can't speak to the 730 issue, as I don't have much experience with two-cylinder diesels. However, I have worked on quite a few 30 series Deeres, and they are pretty strong tractors. I have personally dynoed a 4430 that was putting out 230 hp. I'm not saying that it would have lived long at that level, as it was a 10,000 hour tractor that some idiot had gotten carried away with turning the smoke screw - but it did pull it.
The only real problem I've seen with 4630s engine-wise is that they don't have much of a torque curve - once you get below rated speed the power falls off in a hurry. Those 404s are wound pretty tight in those tractors. If a guy wanted to really play with one without spending gobs of money, he could probably find a good used 466 and swap in pretty easily. If you wanted to stick with the 404, I would recommend pulling the head and making sure it's flat and the valves/guides/seats are in good shape. Also check liner protrusion and make sure it's up to snuff - because at higher horspowers that is critical, to keep the head gasket from blowing. Unless you get real crazy, I don't foresee any rear-end problems, as long as everything is in good shape. The bottom line is that it really depends on what you want. If you want to go to the local pull and not be embarassed, you can take it to the dealer and have them crank it up for the pull, and then turn it back down afterward. It really comes down to what you want to do with the tractor and how competitive you want to be. Just my two cents.

[Log in to Reply]  [No Email]
Andy

05-28-2002 23:15:12




Report to Moderator
 Re: JD 4630, and 730 diesel in reply to Paul K., 05-28-2002 20:09:32  

I don't really know either, but I have seen some 730's with a LOT of money in them, and pull real good, out pull 820's and 830's, if your just gona turn the pump up you will be safe. my 2 cent's. Andy



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy