d12 crankshaft in c engine bock ?
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=203528
Printed Date: 22 Nov 2024 at 5:55pm
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Topic: d12 crankshaft in c engine bock ?
Posted By: HudCo
Subject: d12 crankshaft in c engine bock ?
Date Posted: 05 Oct 2024 at 8:23pm
| willthe crank and rods for a d 10 0r d12 work in a 49 c engine ? |
Replies:
Posted By: PaulB
Date Posted: 06 Oct 2024 at 8:05am
|
The short answer is: Yes, it can be done. However there are many differences that make it more practical to just send your BE/CE crank to have it stroked. I've been increasing the power output of the BE/CE blocks since the early 80s and have more experience pulling a little tractors than probably any other person still living. I thought it would be an easy way to stroke a BE/CE just buy using a 138/149/160 crank and grinding the mains down to fit. First off the BE/CE spray oils the rod bearings and the 138/149/160 use pressure oiling to the rods and when you grind the mains down oil holes will open up in unwanted places. The BE/CE has its thrust main at the front and the 138/149/160 has it at the rear. While you're getting the BE/CE crank stroked, tell them to weld in the seal groove at the front and rear of the crank and then you can use the small D rear seal which is a lip seal instead of a felt seal. The best part is, you can get the crank back to STD/STD and bearing will be easy to get. If your club isn't picky about having an original block just put on a Small D engine. There are a few minor things that don't quite bolt in, but nothing that can't be worked out. Email me if you run into any snags. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: HudCo
Date Posted: 06 Oct 2024 at 9:31am
| how well will the d series engine bolt in to the c will the sheet metal still fit right |
Posted By: PaulB
Date Posted: 06 Oct 2024 at 6:15pm
|
Bolts right up to the bellhousing, use the C flywheel and clutch. At the front of the engine some of the later small D engines used 5/8" bolts and would need steep studs to bolt on the front steering bolster. Depending on if you use a D10/12 manifold or a D14/15 one to whether the exhaust and air cleaner will line up with the holes in the hood. The thermostat housing is different and you'll need to use a D10/12 top hose and do something else for a temperature gauge or make a fitting to allow use of a temperature gauge in the hood like I've done. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: HudCo
Date Posted: 06 Oct 2024 at 8:41pm
| paul b that all sounds very doable does this include the 160 c.i. i do pull my little c some and it needs more guts their , but i have to keep it my chore tractor also. i would like to do that swap and use my c engine for a b i have that needs a engine |
Posted By: PaulB
Date Posted: 07 Oct 2024 at 10:30am
|
The 138/149/160 engines all have the same basic bolt up dimensions as the BE/CE engines. If your only needing a little extra power I currently have a CE that will make about 30 and it could easily be bumped up near to 40. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: tbran
Date Posted: 08 Oct 2024 at 12:27pm
|
Explain the thrust brg swap ? The D10 crank has the thrust flange on the rear - the b/c/ca on the front ? ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: PaulB
Date Posted: 08 Oct 2024 at 6:46pm
What's there to explain? Just as I said above the BE/CE engines have the thrust main at the front of the engine and the small D series engines have the thrust main at the rear of the engine, That's just the way they are built. Look in the different parts books or pull a couple oil pans off and look for yourself. The BE/CE engines and the Smallblock D series are completely different engines and few parts were carried over in the the later design. I can't explain to you it any better and I certainly can't understand it for you. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
tbran wrote: