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| Home > Help Needed / General Tech Chat > just measured my CC in the cylinder head now need help! | |||||||
 871 Posts Member #: 2590 Post Whore Croydon |
4th Jan, 2010 at 01:50:15pm
just measured my CC in the cylinder head chambers and now need to work out my overal CR
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 1137 Posts Member #: 1450 Post Whore Near Paris - France |
4th Jan, 2010 at 02:00:37pm
There are graphs in the Vizad book regarding he gasket stuff.
Rusty by nature
On 23rd Jun, 2008 paul wiginton said:
They said "That sounds rough mate." I said "Cheers it cost me a fortune to make it sound like that!" |
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871 Posts Member #: 2590 Post Whore Croydon |
4th Jan, 2010 at 02:02:18pm
yeah it will be turbo'd just going to get the vizard book its on a shelf really high up wrapped in a cloth |
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871 Posts Member #: 2590 Post Whore Croydon |
4th Jan, 2010 at 02:03:51pm
so what are engine blueprints? all the specs? shall i get my engine number as well?
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
4th Jan, 2010 at 02:05:45pm
I agree, I never include ringland or deck volume as a margin. Better to be low on a turbo engine.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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871 Posts Member #: 2590 Post Whore Croydon |
4th Jan, 2010 at 02:11:46pm
i got a cd case and put it onto the face of the cylinder head and syringed water in only on one chamber, and got 22.5
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871 Posts Member #: 2590 Post Whore Croydon |
4th Jan, 2010 at 02:27:39pm
wow this has got very confusing now reading david vizards book and its not making much sense :( |
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5795 Posts Member #: 80 AFRacing LTD Newbury, Berks |
4th Jan, 2010 at 03:13:30pm
http://www.afracing.com/CR.xls
AlexF |
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871 Posts Member #: 2590 Post Whore Croydon |
4th Jan, 2010 at 08:46:50pm
with that excel i got
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280 Posts Member #: 4340 Senior Member sideways, Birmingham |
5th Jan, 2010 at 08:25:55am
from memory a std mety turbo is 9.5 to 1 but its early in the morning and i havent worked your maths out so if you havent added 1 to your end figure to account for atmospheric air pressure then you could be in trouble as an mg engine is 10.5 to 1.
On 15th Dec, 2009 fastcarl said:
sell the lot to me for £70 pounds and i'll let you stand on the outside edge and look on my inner circle of closest frinds, lol carl FOR EVERY WELL THOUGHT OUT AND WELL EXECUTED PRICISION JOB EVER CONCIEVED, YOU CAN GUARANTEE THAT SOMEWHERE IN WALSALL OR THE BLACK COUNTRY THERE WILL BE A BLOKE TRYING TO ACHIVE THE SAME BY MEANS OF "ITIN IT WI LUMP AMAR" |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
5th Jan, 2010 at 08:35:51am
Your calculation is right, but where has a deck volume of 5.25cc come from, that's quite big. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
5th Jan, 2010 at 09:48:13am
Standard Metro 1275 should be 9.4:1 iirc On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it 
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
5th Jan, 2010 at 11:09:52am
no, actualy its 9.44:1
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
5th Jan, 2010 at 11:38:01am
On 5th Jan, 2010 Sprocket said:
no, actualy its 9.44:1  
On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it
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871 Posts Member #: 2590 Post Whore Croydon |
5th Jan, 2010 at 01:25:20pm
it was already on the excel software as standard for a N/A 1275 |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
5th Jan, 2010 at 01:38:28pm
By this I guess you mean the deck volume?
On 5th Jan, 2010 blister said:
it was already on the excel software as standard for a N/A 1275 This is a hell of an assumption, you need to measure it on your own engine. On all my engines it's zero. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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871 Posts Member #: 2590 Post Whore Croydon |
5th Jan, 2010 at 04:42:10pm
yes wil_h sorry about that yeah the deck volume was already inputted in the excel software |
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72 Posts Member #: 6792 Advanced Member |
5th Jan, 2010 at 08:06:29pm
The ONLY way you will find out with any remote accuracy is to measure it. I see that you used water previously, however this will give you some in-accuracy because it has surface tension. The most accepted way is to use Kerosene (or similar).
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