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| Author | Subject: Max revs on stroked XU10J4RS? |
 stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #51
Everything is a compromise, you've just got to work out what can be acheived and then work out which setup is the best for your personal application.  ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
 Posted 15th May 2012 at 14:59
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atterz
Seasoned Pro  Location: Stafford Registered: 18 Feb 2011 Posts: 1,134 Status: Offline |
Post #52
Above comment is spot on, thats how it would be in my mind.I would assume that its far easier to protect and build an engine from torque than revs. ________________________________________ owain wrote: A GTI-6 with a good dashboard and the seats down can outsprint an E46 M3 in July. |
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Posted 15th May 2012 at 15:02
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ruan
Junior User  Location: Truro Registered: 17 Sep 2009 Posts: 64 Status: Offline |
Post #53
stan_306gti6 wrote: Everything is a compromise, you've just got to work out what can be acheived and then work out which setup is the best for your personal application. Absolutely - that's why the Centrifugal S/C conversions are so (in comparison...) reliable - they're a pretty darned good compromise. |
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Posted 15th May 2012 at 15:10
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matty_rallye
Senior User  Location: Devizes Registered: 28 Oct 2005 Posts: 966 Status: Offline |
Post #54
adam b wrote: Yes Ashok's blue one. Its a beast of a thing and very standard-looking. So the valve has to move further, quicker matty? Yea i was thinking that a hydraulic lifter having to move furthar at a higher rpm in a N/A engine is going to struggle more / cause more problems than one which doesnt have to travel so far at the same RPM due to a less agressive camshaft profile? I am sure someone who knows far more than me would be able to say! ________________________________________ 2.1 16v 306 Rallye. |
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Posted 15th May 2012 at 20:22
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #55
A cam with less lift is not going to work the lifters as hard as one with a high lift.  ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 15th May 2012 at 20:50
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clen666
Seasoned Pro  Location: Co. Durham Registered: 12 Feb 2009 Posts: 2,401 Status: Offline |
Post #56
Isn't it the ramp angle of the camshaft lobe that has a greater effect on the lifters, rather than the total amount of lift?________________________________________ Team 'unintentional rat look' |
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Posted 15th May 2012 at 21:22
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #57
yeap, spot on Clen.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 15th May 2012 at 22:05
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #58
clen666 wrote: Isn't it the ramp angle of the camshaft lobe that has a greater effect on the lifters, rather than the total amount of lift? Both really. The ramp angle is part of it but remember that on a high lift cam when the valve is fully open, the lifter is taking more load than normal as there is more pressure on the lifter. The easier life you can give these components the better and the longer they will last. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 15th May 2012 at 22:06
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b11 bob
Banned! Location: birmingham Registered: 19 Dec 2010 Posts: 265 Status: Offline |
Post #59
welshpug! wrote: stan_306gti6 wrote: welshpug! wrote: rich_w wrote: What experience do you have that forms the basis of your comment? Direct from talking to an engine builder, he has a few championships to his name and works with a few experienced race engine builders, so I'd trust their word  Rich asked what experience "you" had not other people you've talked to.  So in that context, what has Rich done with long stroke N-a engines?? I was passing direct info from an engine builder, not "rumours". next we'll be hearing how Rich was right and Sodemo was wrong all along, they didn't need to put steel cranks in all those maxi and WRC engines, nor did they have to stick very long very expensive manifolds on them or solid tappets to get to 9k. after all standard stuff will do the job just fine? he's starting to sound like that B11BOB fella  I share Rich's view on this due to experience being priceless unlike other peoples opinions.Which are just that ________________________________________ 205 GTI6 235 bhp at 7400 rpm |
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Posted 19th May 2012 at 19:46
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atterz
Seasoned Pro Location: Stafford Registered: 18 Feb 2011 Posts: 1,134 Status: Offline |
Post #60
Not again  ________________________________________ owain wrote: A GTI-6 with a good dashboard and the seats down can outsprint an E46 M3 in July. |
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Posted 19th May 2012 at 19:47
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dragoon
Seasoned Pro  Location: Ghent - Belgium Registered: 30 Dec 2008 Posts: 1,071 Status: Offline |
Post #61
asim_pug306 wrote: This must be the sort of thing discussed at length on Honda forums. VTEC kicks in at 10k yo!!  I was thinking this the whole timean interesting topic anyhow  ________________________________________ Team WheelwhoreTeam Limited Edition Astor 306 Francorchamps RIP Virtual Blue 208 GTi quote: I this place. So many illiterate deluded fool's acting 'ard . . . and so many literate intelligent people to rip them apart and knock them back down again . . . ahh  |
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Posted 19th May 2012 at 20:03
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phillipm
Seasoned Pro  Location: Rotherham Registered: 15 Oct 2006 Posts: 20,607 Status: Offline |
Post #62
ruan wrote: End of the day - Torque damages things and RPMs damage things... Take your pick of which you damage - make more of one or the other and you'll end up with more horsepower. . But long before either you need to worry about fatigue. Unless you intend on stripping, inspecting and rebuilding once a year ________________________________________ - Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM meEmail me! Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces. |
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Posted 19th May 2012 at 20:05
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atterz
Seasoned Pro Location: Stafford Registered: 18 Feb 2011 Posts: 1,134 Status: Offline |
Post #63
True, we arent rally teams.________________________________________ owain wrote: A GTI-6 with a good dashboard and the seats down can outsprint an E46 M3 in July. |
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Posted 19th May 2012 at 20:33
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