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| SteveNMaine |
 Dec 2 2024, 08:17 AM
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#1
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Member  Group: Members Posts: 94 Joined: 12-August 24 From: Maine Member No.: 28,288 Region Association: None  |
I am trying to work out compression ratio of my 2056 build. In calculating head volume my understanding from the forum is that stock 2.0 heads have 57mm and the valve pockets on the pistons I am going to use is 3mm. Do I add these together to use 60mm in my calculations for head volume?
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| technicalninja |
Dec 4 2024, 04:27 PM
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#2
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Advanced Member Group: Members Posts: 2,531 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region 
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Jack, I am the TECHNICALninja...
I earned that name and did not choose it myself. That was compression calculations 101! You know this; you're serious too... Do you disagree with what I posted? If you don't take everything into consideration, you're not doing it correctly! Thank God he's using flat tops. Imagine the difficulty with an exotic shaped piston crown. That is where I've used the clay before. And, yep, during a build, speed is not a factor. I seldom have to go back "in" however... I want to do it exactly right ONE SINGLE TIME! And I use the alcohol BECAUSE of the fast, clean evaporative qualities. Every AC system I flush is finished with alcohol as to guarantee nothing is in the system when I pull a vacuum. A single drop of the other AC flushing chemicals will kill a new system. I call this "medically clean"- not even germs... |
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Posts in this topic
SteveNMaine 2056 Build Dec 2 2024, 08:17 AM
Geezer914 Yes, anything that adds volume. Dec 2 2024, 09:25 AM technicalninja You should measure the valve depressions, head CCs... Dec 2 2024, 09:50 AM rfinegan IM doing this too..
This may help
https://www.yout... Dec 2 2024, 12:31 PM technicalninja Another tip is to reduce the surface tension of th... Dec 2 2024, 12:56 PM barefoot My understanding is that 2L heads are 60 cc and 1,... Dec 2 2024, 06:40 PM Jack Standz
I am trying to work out compression ratio of my 2... Dec 2 2024, 10:41 PM emerygt350 I used my kids crayon clay and compared it to oil,... Dec 3 2024, 06:25 AM 930cabman
I am trying to work out compression ratio of my 2... Dec 3 2024, 10:59 AM technicalninja
[quote name='SteveNMaine' post='3179889' date='De... Dec 3 2024, 12:16 PM porschetub Did all that when I did my last build for a custom... Dec 3 2024, 04:15 PM emerygt350 Well spent time. And on a type 4 it's some pre... Dec 3 2024, 04:55 PM technicalninja @porschetub The .028 on the top of the piston is... Dec 3 2024, 05:42 PM
porschetub
@[url=http://www.914world.com/bbs2/index.php?show... Dec 7 2024, 01:28 PM Jack Standz
[quote name='SteveNMaine' post='3179889' date='D... Dec 4 2024, 02:17 PM Geezer914 Deck height should be around 0.040, if less, check... Dec 5 2024, 09:30 AM Jack Standz
Jack, I am the TECHNICALninja...
I earned that n... Dec 5 2024, 10:06 AM |
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