Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

Conversion Problem. Need help.

Post new topic    
View previous topic :: View next topic  
Author Message
Walter Buller

Joined: 22 Aug 2002
Posts: 376

Report to Moderator

PostPosted: Thu Jul 19, 2012 8:34 pm    Post subject: Conversion Problem. Need help. Reply to specific post Reply with quote

We are putting a 1993 5.9 12v Cummins with an NV 4500 tranny into a Chevy 3500 that originally had a 6.5 in it with an automatic. We had to use a 1994 clutch pack and flywheel because the bell housing is off of a 1994 Cummins. The problem we are having is the inside of the bell housing binding on the pressure plate before the bell housing is flush against the motor. We have tried 1993 clutches, but the same thing happens. The bell housing is now able to touch the motor at the bottom, but stands away from it just a little at the top. We speculated that there may be some kind of an adapter plate that goes there but the Chrysler people didn't say so. Do any of you guys have any idea of what the problem might be?
Back to top
View user's profile
Tractor Guru

Joined: 13 Dec 2000
Posts: 20364
Location: Chester NH

Report to Moderator

PostPosted: Fri Jul 20, 2012 4:07 am    Post subject: Re: Conversion Problem. Need help. Reply to specific post Reply with quote

It sounds like there must be a difference in the shape of either the crank flange or the flywheel, so that the pressure plate is positioned slightly further away from the block. It shouldn't be difficult to get the flywheel surfaced to allow for more room. I converted a clutch to a double disc which required getting a different flywheel and getting it machined to have room for the additional clutch disc and "floater" disc. It was just a matter of measurements. Assuming it is a standard transmission you will need to do the same type of measuring to have your clutch fingers at the proper height for the release bearing to engage properly.
Back to top
View user's profile
Tractor Expert

Joined: 18 May 2003
Posts: 1951

Report to Moderator

PostPosted: Fri Jul 20, 2012 4:27 pm    Post subject: Re: Conversion Problem. Need help. Reply to specific post Reply with quote

The issue is the flywheel housing. The 94-up unit is deeper than the 93-earlier unit to allow more room between the flywheel and transmission for the lock-up torque converter in the automatics. You need the flywheel housing and starter off a 94-up unit, as the starter is different as well and the earlier starter won't engage the flywheel properly when used with the later flywheel housing.
sign up here for more Cummins info

Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Tractor Transporting All times are GMT - 8 Hours
Page 1 of 1

Jump to:  

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

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