Conversion question……
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Stage III
Joined: Aug 2023
Posts: 3
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From: Memphis
Conversion question……
I know there are many threads about this but I can’t find the info I’m looking for. I recently bought an 883 that was said to have been converted. The head says 883 but when I put scope down the cylinder to look at piston it is stamped 3.625. It appears to be a standard flat top piston. There is also HH29 stamped on top of piston as well. I did the “stick” measurement and it looks to read as an 883. I’m lost. Any info will be greatly appreciated. It does have an S&S shorty carb on it.
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Stage III
Joined: Aug 2023
Posts: 3
Likes: 0
From: Memphis
No paperwork at all. 2 different people have owned it that I personally know but neither had the conversion done. It was said to be done by original owner. I did the “stick” measurement and it measures what appears to be stock stroke but with the pistons being stamped 3.625 I was thinking possibly a big bore kit was installed. I’m new to the conversion topic so I have no clue.
HDF Community Team
Joined: Dec 2011
Posts: 8,621
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From: San Diego, CA
It's possible the combustion chambers were relieved to lower the compression ratio in order to use flat top pistons. I think the early SE kits had a template for grinding out material from the 883 chamber.
John
John
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From: OH
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Cruiser
Joined: Mar 2017
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From: Kentucky
Someone has previously posted this but here it is again. You should read this it will explain the heads for an 883 upgrade. https://hammerperf.com/ttxlheads.shtml
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