Post #1
Is it possible to measures the cylinder head thickness without removing it . Got some cams just want to check before fitting them .
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displaying posts 1 to 14 of 14
| Author | Subject: Cat cams valve clearance |
 mrtickle
Newbie  Location: Norwich Registered: 19 Apr 2011 Posts: 42 Status: Offline |
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 Posted 28th Nov 2015 at 20:13
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #2
Which cams?________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 28th Nov 2015 at 20:26
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #3
Moved to Engines.  ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
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Posted 29th Nov 2015 at 00:30
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mrtickle
Newbie Location: Norwich Registered: 19 Apr 2011 Posts: 42 Status: Offline |
Post #4
welshpug! wrote: Which cams? I'm unsure will check tomorrow on the cams , I have had the head skimmed once but I'm not certain how much was taken off it was 5 years ago and believe this is the only time it has been skimmed. |
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Posted 29th Nov 2015 at 22:10
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mrtickle
Newbie Location: Norwich Registered: 19 Apr 2011 Posts: 42 Status: Offline |
Post #5
welshpug! wrote: Which cams? The cams that I have are -4903109- cat cams any advice would be great. |
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Posted 3rd Dec 2015 at 17:09
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #6
http://www.catcams.co.uk/acatalog/4903109.pdf ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Dec 2015 at 17:56
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #7
2mm lift at tdc on inlet, 1.4 exhaust, too much for std pistons even machined, borderline too much lift for std valves also.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Dec 2015 at 18:02
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mrtickle
Newbie Location: Norwich Registered: 19 Apr 2011 Posts: 42 Status: Offline |
Post #8
welshpug! wrote: 2mm lift at tdc on inlet, 1.4 exhaust, too much for std pistons even machined, borderline too much lift for std valves also. Aw ok what if I had a thicker head gasket and machined Pistons would that still not work . |
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Posted 3rd Dec 2015 at 18:18
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #9
wilder cams need more compression not less, you would lose a fair bit if you put a gasket thick enough to get safe clearance, I don't think you'll find a gasket thick enough for that as well________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Dec 2015 at 20:30
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mrtickle
Newbie Location: Norwich Registered: 19 Apr 2011 Posts: 42 Status: Offline |
Post #10
welshpug! wrote: wilder cams need more compression not less, you would lose a fair bit if you put a gasket thick enough to get safe clearance, I don't think you'll find a gasket thick enough for that as well Ok that's a pain never mind thanks anyway  |
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Posted 3rd Dec 2015 at 20:59
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pete_rallye
Seasoned Pro  Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Post #11
welshpug! wrote: borderline too much lift for std valves also. Explain please?! You mean valve to valve clearance? ________________________________________ Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
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Posted 3rd Dec 2015 at 21:13
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #12
no, risk of going coil bound, mssed the 'spring' word out!________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Dec 2015 at 22:03
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pete_rallye
Seasoned Pro Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Post #13
Ah ok, do you know what height the standard springs go coil bound at?________________________________________ Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
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Posted 3rd Dec 2015 at 22:31
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #14
I can't remember the exact figure, but its around 10.9, they'll hit the spray bars past 10.9 also if they're the same base circle as a standard cam.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 4th Dec 2015 at 11:06
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