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170 gas engine questions

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=34813
Printed Date: 20 Sep 2025 at 3:04pm
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Topic: 170 gas engine questions

Posted By: Darb210
Subject: 170 gas engine questions
Date Posted: 01 Aug 2011 at 10:33am

Hello, just bought a 170 gas, clean little tractor, but dropped a valve, owner decided not to fix it & I bought it. Head is ruined as well as one piston. I have a good wd45 engine , is that a feasible swap or will I be under-powering the 170? Any opinions/options are appreciated. Thanks, A.J.

Replies:

Posted By: wi50
Date Posted: 01 Aug 2011 at 10:48am

the 170 is a much nicer engine compared to the wd45, but you are in luck. Swap the head. Hopefully you can find a piston or cylinder assembly without haveing to buy a complete set if the others are good.

The 170 has quite a bit more power than the WD45, but it needs it with more accesories and hyd to run.

I don't put much time on any of these old gas tractors, it would be nice to spend all kinds of money and have everything fresh, but I usually just repair my "old tractors" to be in working order, if it's questionable than it gets replaced but I don't go putting to much in them. They get driven into the shed anyway untill the battery goes dead and the gas gets old, then I decide to try and use it to rake some hay or run an auger so I can spend more time and money getting it running again.

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"see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet"