Farm Equipment - difference between 180 and 190 gas

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difference between 180 and 190 gas

Printed From: Unofficial Allis
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=35822
Printed Date: 10 Sep 2025 at 4:29am
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Topic: difference between 180 and 190 gas

Posted By: fst86410
Subject: difference between 180 and 190 gas
Date Posted: 21 Aug 2011 at 8:18am

Hello, new to the forum. I was just wondering if someone could tell me what the differences are in the engine being that they are both 2500 series engines? Thanks

Replies:

Posted By: DrAllis
Date Posted: 21 Aug 2011 at 8:31am

180 has a smaller carb and runs 200 rpm slower.

Posted By: fst86410
Date Posted: 22 Aug 2011 at 11:28am

That's it?

Posted By: DrAllis
Date Posted: 22 Aug 2011 at 12:22pm

YUP....you sound surprised?

Posted By: fst86410
Date Posted: 23 Aug 2011 at 7:50am

A little. So I can just slap a 190 carb on my 180 and make 10 more hp?

Posted By: DrAllis
Date Posted: 23 Aug 2011 at 8:03am

And increase the rpm's by 200.

Posted By: Skyhighballoon(MO)
Date Posted: 23 Aug 2011 at 10:12am

Do you get the 200 rpm's by changing the 180 governor weights to 190 weights, changing a spring(s) or a combination? Just curious. Mike

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1981 Gleaner F2 Corn Plus w 13' flex
1968 Gleaner EIII w 10' & 330
1969 180 gas
1965 D17 S-IV gas
1963 D17 S-III gas
1956 WD45 gas NF PS
1956 All-Crop 66 Big Bin
303 wire baler, 716H, 712H mowers

Posted By: fst86410
Date Posted: 23 Aug 2011 at 10:48am

Alright, where do I locate a Zenith carb for a G2500 190?

Posted By: KGood
Date Posted: 23 Aug 2011 at 12:20pm

You might be able to make your carb. as big as 190's. With a bigger venturi,main and secondary jet.

Posted By: fst86410
Date Posted: 23 Aug 2011 at 1:01pm

I didnt know you could change the venturi.

Posted By: KGood
Date Posted: 23 Aug 2011 at 2:06pm

We did on our marvels for pulling I would think most zeniths would to.

Posted By: fst86410
Date Posted: 23 Aug 2011 at 2:48pm

I'll check it out. Thanks