D-17 gas head
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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=28769
Printed Date: 03 Mar 2025 at 11:31am
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Topic: D-17 gas head
Posted By: TexasAllis
Subject: D-17 gas head
Date Posted: 08 Apr 2011 at 10:16am
| Does anyone have a drawing (cutaway) of a D-17 gas head that shows the location of the water passages? |
Replies:
Posted By: walters444
Date Posted: 08 Apr 2011 at 5:50pm
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no pic.,,,,, but i might be able to help
whats up????????
Chapin Cylinder Head and Block 217-472-3333
GIVE US A RING
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Posted By: mlpankey
Date Posted: 09 Apr 2011 at 9:03am
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if your thinking on porting and wanting to know where the water is . the two places i usually hit it first at are at the bottm about a half inch in . At the top were the intake port tees or turns toward the intake valve. Belzona 111 supermetal is your friend when doing port work on a 50 yearold porous cast iron head. some heads due to sand pits and rust over there life have real thin areas. ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: TexasAllis
Date Posted: 11 Apr 2011 at 7:28am
| I was thinking about building a spit manifold out of header pipe. There are not many holes in the head to bolt a manifold to so I wanted to know if I drilled additional holes where can I drill and not hit water. |
Posted By: Steve M C/IL
Date Posted: 11 Apr 2011 at 11:31am
| Most if not all the current manifold studs go into the water jacket.....what's a couple more? |
Posted By: wi50
Date Posted: 11 Apr 2011 at 12:05pm
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here's an old pic of a manifold I made ------------- "see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet" |
just stay away from the ports a bit, but you won't be able to drill and put a bolt that close anyway.Posted By: TexasAllis
Date Posted: 12 Apr 2011 at 7:29am
Now thats what I am talking about. A little more modifications than what I have planned but I like it.
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wi50 wrote:Posted By: KGood
Date Posted: 12 Apr 2011 at 9:01am
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Do you guys bevel out were the spark plug goes so it's not such a sharp hole sunk in the head(on the compression side). We do just because a guy told us we need to. It kinda makes sense to do that but I wondered if that was normal practice? The guys at Rochester head shop drilled into two water passages for putting in bigger valves before they realized it. It was on a short head all they said was sorry we need a different one. |
Posted By: wi50
Date Posted: 12 Apr 2011 at 10:15am
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tx allis,
you can see the studs I installed out past the end exhaust ports in that head if you look close in the picture you see a shiny stud in the end.
Kgood,
I flare the plug pockets some, it should help get the flame traveling a little easier, but alwayse wait untill the valve work has been done, sometimes they can get pretty close to the plug pockets. ------------- "see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet" |