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displaying posts 1 to 18 of 18
| Author | Subject: Timing advance |
 monkgti
Regular  Location: New Ross Registered: 31 Jul 2009 Posts: 343 Status: Offline |
Post #1
well lads, wanting to advance my cam timing now seen as the car has passed nct and everything else is done with it now that i had to do, but im a bit nervous of advancing it too far as ive just got the head done because of 2 bent valves from a silly mistake while changing the timing belt, so just wondering if anyone can advise on how much to advance the cams without going too far??________________________________________ IF YOU CAN READ THIS IM STILL IN 5TH!!! |
 Posted 29th Jul 2010 at 21:53
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #2
if the head has been skimmed and a standard gasket used I wouldn't play with the cam timing.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 29th Jul 2010 at 23:52
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monkgti
Regular Location: New Ross Registered: 31 Jul 2009 Posts: 343 Status: Offline |
Post #3
yeah the head had a light resurface but i used one of Rich W,s head gaskets would this be ok then?________________________________________ IF YOU CAN READ THIS IM STILL IN 5TH!!! |
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Posted 30th Jul 2010 at 00:23
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monkgti
Regular Location: New Ross Registered: 31 Jul 2009 Posts: 343 Status: Offline |
Post #4
anyone?________________________________________ IF YOU CAN READ THIS IM STILL IN 5TH!!! |
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Posted 31st Jul 2010 at 23:18
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309btcc
**DODGY SELLER**  Location: england Registered: 07 Jul 2009 Posts: 530 Status: Offline |
Post #5
wouldnt bother mate you dont notice any differance atal |
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Posted 1st Aug 2010 at 21:59
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rallyeash
Seasoned Pro  Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #6
you can gain around 10 ft lb, so worth doing. believe peak power is brought down the rev range though, do a search there loads of info on here about it all... ________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 1st Aug 2010 at 23:18
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dr-evil
Senior User  Location: Crewe Registered: 20 Oct 2006 Posts: 901 Status: Offline |
Post #7
How much have you had skimmed off? Mines had 8 thou (0.23mm) skimmed off it plus an unknown amount previous to me buying the engine and the valves touch at stock timing so make sure you know what you have before advancing the inlet.________________________________________ Cad Monkey will work for chocolate biscuits....I'm not kidding |
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Posted 2nd Aug 2010 at 00:18
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monkgti
Regular Location: New Ross Registered: 31 Jul 2009 Posts: 343 Status: Offline |
Post #8
yeah ive read a good bit about the gains and difference in power band and that but just cant find anything about exactly how much to advance them by  i definitly dont want to go too far!im not sure how much has been takin off to be honest but i told the lad i didnt want much takin off and he assured me he would just give it the very lightest resurface.. as for being skimmed before im pretty sure it hasnt as theres a full history with the car but nothing about the head ever being off... if its too dangerous to try ill just leave it but i just wanted to give the car a little extra go as i have only induction kit and decat engine wise and havnt really got the funds to go for cams or anything like that and after reading about gaining up to 10 ft/lbs i thought it be worth a go  ________________________________________ IF YOU CAN READ THIS IM STILL IN 5TH!!! |
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Posted 2nd Aug 2010 at 03:44
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cwspellowe
Seasoned Pro  Location: Calderbank Registered: 19 Jul 2009 Posts: 6,496 Status: Offline |
Post #9
I did it myself, turning the key for the first time was the most poo inducing moment of owning the car ever  Car feels a lot smoother now but i was 99% sure the head hadn't been skimmed before, wouldn't risk it if the risks were too great ________________________________________ Bye bye Sundance Kid |
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Posted 2nd Aug 2010 at 04:26
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monkgti
Regular Location: New Ross Registered: 31 Jul 2009 Posts: 343 Status: Offline |
Post #10
does it feel much better than before? how far did you move the timing?________________________________________ IF YOU CAN READ THIS IM STILL IN 5TH!!! |
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Posted 2nd Aug 2010 at 05:17
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joevts
Senior User Location: barnsley Registered: 21 May 2008 Posts: 608 Status: Offline |
Post #11
move it two teeth on the belt mate that should sort you out. no seriously, just don't. |
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Posted 2nd Aug 2010 at 17:28
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adam b
Seasoned Pro  Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #12
309btcc wrote: wouldnt bother mate you dont notice any differance atal So moving from 142lbft to 156lbft is no difference?  Yes it can be done on a standard engine without a skim, yes it can get you more torque lower down the rev range, yes it can f*ck your engine if you aren't careful. No I have no idea what amount mine was moved by. Was a quick car though  ________________________________________ Nothing to see here |
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Posted 2nd Aug 2010 at 17:32
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monkgti
Regular Location: New Ross Registered: 31 Jul 2009 Posts: 343 Status: Offline |
Post #13
142 to 156 ft/lb's  i have to do it, someone please tell me how much it should be advanced by  ________________________________________ IF YOU CAN READ THIS IM STILL IN 5TH!!! |
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Posted 2nd Aug 2010 at 22:00
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adam b
Seasoned Pro Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #14
Your difficulty is that the head has been skimmed and that I didn't do mine, rather it was done by a local rally guy who knows the engines inside out. There are photos of mine on here, but of course they can never be that accurate due to lens angles etc.The only way you can do it is by measuring everything properly and taking it from there. Welshpug might be able to give you an idea of what needs to be measured. I can't help you more than that i'm afraid. I was going to look into it on my V6 but thats not happening now. ________________________________________ Nothing to see here |
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Posted 2nd Aug 2010 at 23:54
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #15
this really needs someone to measure quite how much lift an XU10J4RS cam has at its factory TDC setting, and then 5 -6 degrees further, which is what IIRC some of the Brazilian Xsara owners have tried.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Aug 2010 at 00:17
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joevts
Senior User Location: barnsley Registered: 21 May 2008 Posts: 608 Status: Offline |
Post #16
how about sticking some putty on top of the piston and seeing how much of an indentation the valves leave when you turn it over? or is that just stupid? is it not quite easy to just get a seperate head and bottom end and turn them over very slowly, taking incremental measurements of each with a dial gauge? |
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Posted 3rd Aug 2010 at 00:39
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #17
that is one way to do it.other way is to measure directly off the top of the bucket with a dial gauge making note of the crank angle, which is the most common way to do it. ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 3rd Aug 2010 at 00:59
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monkgti
Regular Location: New Ross Registered: 31 Jul 2009 Posts: 343 Status: Offline |
Post #18
well what if when someone finds out what theirs was advanced by i just move mine half that to be safe? still should make a small improvment no?________________________________________ IF YOU CAN READ THIS IM STILL IN 5TH!!! |
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Posted 4th Aug 2010 at 15:44
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