D17 G226 any 4" piston kits still available
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=189311
Printed Date: 27 Jul 2025 at 9:51am
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Topic: D17 G226 any 4" piston kits still available
Posted By: pirlbeck
Subject: D17 G226 any 4" piston kits still available
Date Posted: 05 Jul 2022 at 2:00pm
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Does anyone still offer a 4" bore sleeve & piston kit for a G226? I have part numbers for the OEM kits of varying compression ratios, but local dealer says they are all NLA. I don't really want to use a 4-1/8" kit if I don't have to, as years ago when I worked at an Allis Dealer it seemed like tractors would come in with coolant in the cylinders from a broken sleeve flange and they always had the 4-1/8" S & P in them. This was 45+ years ago so maybe something has changed with the quality of the liner and this is no longer a problem. 70257452 4" 7.25-1 C/R 70257458 4" 8.25-1 C/R 70257859 4" 8.00-1 C/R 70257457 4' 5.83-1 C/R I would be ok with any of the above kits other than the 5.83-1 kit. Thanks! |
Replies:
Posted By: DrAllis
Date Posted: 05 Jul 2022 at 2:32pm
| I think maybe someone has 4 inch sleeves available. I was thinking about buying some of those and having custom Power Crater 8.0 to 1 pistons made for the 4 inch sleeves. Wouldn't be cheap, but I've always felt the 4 1/8" bores with no compression was just a giant step backwards in power and fuel economy. |
Posted By: steve(ill)
Date Posted: 05 Jul 2022 at 4:04pm
------------- Like them all, but love the "B"s. |
Posted By: DrAllis
Date Posted: 05 Jul 2022 at 5:42pm
| The same website also shows an 8.25 to 1 kit under the 170 tractor. They call it an LPgas kit which would be correct for a D-17 LPgas. |
Posted By: Alex09(WI)
Date Posted: 07 Jul 2022 at 8:08am
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We have a 175 piston & sleeve kit, 8.25:1 ratio, A-C #257548 in stock for $922. Also have aftermarket piston & sleeve kit, 8.25:1 ratio with 4.125 bore available. And NOS D17, WD45, WD pistons 229718 available. ------------- www.awtractor.com A&W TRACTOR 920-598-1287 KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY |
Posted By: Allis dave
Date Posted: 07 Jul 2022 at 9:39am
| That is interesting. I few years ago I was looking pretty hard at 8.25 kits. I was able to find and buy a Reliance 4" kit but I never saw a 4.125 overbore 8.25 Kit. That would be a step up for those pushing for more power. |
Posted By: DrAllis
Date Posted: 07 Jul 2022 at 9:41am
| 1/8" overbore at the same compression ratio is probably 3 to 4 more HP at the PTO. |
Posted By: Alex09(WI)
Date Posted: 07 Jul 2022 at 9:55am
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I have sold one of those 8.25:1 4.125" bore kits to a customer who pulls his WD and has told me its working great! We also installed that kit in a local 170 tractor and that has been working great too! I would not recommend that kit with the WD/WD45 crankshaft or if the D17 crank has been turned down more than .010. ------------- www.awtractor.com A&W TRACTOR 920-598-1287 KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY |
Posted By: TramwayGuy
Date Posted: 07 Jul 2022 at 10:23am
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“ I have sold one of those 8.25:1 4.125" bore kits to a customer who pulls his WD..” Putting a 8.25 compression ratio kit from a 170 into a WD (with 4” stroke) would lose a lot in compression. |
Posted By: Allis dave
Date Posted: 07 Jul 2022 at 11:30am
| It's good to know some of these options are available again. 5 years ago when I was buying there was only one 4" 8.25 kit left on the shelf with no prospect of another run. |
Posted By: WF owner
Date Posted: 07 Jul 2022 at 5:49pm
A lot of guys have replaced the 201(4") WD crankshaft with a 226 (4.5") WD45 in the original 201 block. I think that's what Alex was talking about.
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TramwayGuy wrote:Posted By: Alex09(WI)
Date Posted: 07 Jul 2022 at 5:56pm
Good catch! Tractor was a WD45 not a WD. Hard to keep track of all the sales and repairs I make lol ------------- www.awtractor.com A&W TRACTOR 920-598-1287 KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY |