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Can someone confirm the M113k combustion chamber volume?

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Old Sep 8, 2021 | 06:42 PM
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Can someone confirm the M113k combustion chamber volume?
I'm seeing conflicting information in my research, and I don't want to pull the heads off my engine just to confirm.

Has anyone on here actually cc'd a set of Kompressor heads themselves? I'm trying to calculate piston dish volume to get at the CR I want for the engine I'm building.
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Old Sep 9, 2021 | 06:16 PM
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WTF!??? Are you drunk or just stupid?
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Old Sep 9, 2021 | 11:18 PM
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Originally Posted by Plutoe
if you know the the total volume of your engine determining a single cylinder volume is easy to calculate, if this seems difficult I would than ask you son or daughter for help.
Plutoe, GFY.
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Old Sep 10, 2021 | 07:39 AM
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Joe I do not know and have no one to check it . But I have a cylinder head that I could send you.
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Old Sep 10, 2021 | 11:47 AM
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Originally Posted by SICAMG
Joe I do not know and have no one to check it . But I have a cylinder head that I could send you.
All you need is a piece of plexiglass or glass with a small hole lined up over the chamber. Seal against the head with a very thin coat of grease and add water through the hole using a precise measuring device. I used to do that years ago when verifying combustion chamber volume between multiple cylinders and/or after resurfacing the cylinder head.
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Old Sep 10, 2021 | 12:32 PM
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Originally Posted by bbirdwell
All you need is a piece of plexiglass or glass with a small hole lined up over the chamber. Seal against the head with a very thin coat of grease and add water through the hole using a precise measuring device. I used to do that years ago when verifying combustion chamber volume between multiple cylinders and/or after resurfacing the cylinder head.
That’s exactly how I checked the piston dish volume and the chambers in my NA heads, except I used isopropyl alcohol. Its thinner viscosity makes it less prone to having air bubbles trapped in it.







Originally Posted by SICAMG
Joe I do not know and have no one to check it . But I have a cylinder head that I could send you.
Thank you, but I don’t think we need to go through the trouble of shipping a head. I have reached out to Tony at RaceIQ to see if he can confirm. He should have this info available.
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Old Sep 10, 2021 | 09:56 PM
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Hey sorry JoeJ, I can check when I get the engine on my stand apart. I've just been procrastinating so bad.
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