Post #1
I'm trying to find out the above, anyone know these off hand?
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displaying posts 1 to 7 of 7
| Author | Subject: GTi6 combustion chamber and piston dome volume |
 JWP EFi
Turbo Legend!  Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
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 Posted 10th Dec 2012 at 19:40
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clen666
Seasoned Pro  Location: Co. Durham Registered: 12 Feb 2009 Posts: 2,401 Status: Offline |
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Posted 10th Dec 2012 at 22:46
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JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #3
i was reading that earlier on after i posted lol, hope welshpugs's calculations are correct! no doubt they will be |
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Posted 10th Dec 2012 at 22:56
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #4
Std gasket is 1.2mm thick and iirc 87mm dia, comp ratio is 10.8, cc is 1998, combystion chamber iirc is 37cc, should be able to work out the piston volume from that, its not much even though they do come up to deck and have tiny cutouts.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 10th Dec 2012 at 23:03
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JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #5
does 6.5cc piston dome volume sound about right? |
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Posted 11th Dec 2012 at 08:21
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fletch
Track Head  Location: The nearest Shell garage Registered: 12 Jun 2004 Posts: 12,273 Status: Offline |
Post #6
Rich_w will most likely know.An accurate way would be to fit the valves to the cylinder head with a sheet of perspex flush with the gasket face. Fill up the chamber through a hole in the perspex with a liquid measured from a burette. Could do a similar thing with the piston though depends if you want to be super accurate and measure down to the first piston ring. |
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Posted 11th Dec 2012 at 17:13
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JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #7
lol i tried that but the fluid kept leaking out so couldnt get an accurate readinganyway seeing as my T16 pistons and rods were of no use to me i came up with an idea... 1.9 XUD crank for 88mm stroke RFY 152mm con rods GTi6 pistons with a 1.2mm gasket and approx 1.25mm skim, i work this combo out to give me an 8.1:1 cr yes the pistons will sit 4mm down the bore, but so did the T16 ones there have been a few people using an 8 valve turbo bottom end with gti6 head and pushing well over 300bhp, with the right turbo and mapping so i think my latest 'brainwave' will be up to the job. |
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Posted 11th Dec 2012 at 20:56
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