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displaying posts 1 to 25 of 37
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| Author | Subject: Lariest cams on standard internals |
 Mossy1985
Senior User  Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #1
As title states what is the best uprated cams I can use on the standard engine in my 6? I've searched and found a,to of info especially a old thread started by welshpug which was full of numbers and degrees which basically made my brain fart! So any advice, info, personal experiences, recommendations etc all welcomedCheers Dave |
 Posted 7th Jan 2015 at 18:12
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demondriverdan
Seasoned Pro  Location: Londinium Registered: 29 Nov 2010 Posts: 2,665 Status: Offline |
Post #2
Catcams 3107 will work on standard internals I believe. PT81s can if you're feeling brave and your head hasn't been skimmed!________________________________________ Rallye Race Car |
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Posted 7th Jan 2015 at 18:29
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RetroPug
Seasoned Pro  Location: Leicestershire Registered: 15 Jan 2013 Posts: 2,473 Status: Offline |
Post #3
Mild enough to make it not really worth the cost, basically.________________________________________ 61k miles Ph.1 Diablo '6 Project Thread |
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Posted 7th Jan 2015 at 18:48
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Mossy1985
Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #4
RetroPug wrote: Mild enough to make it not really worth the cost, basically. Which ones are you talking about? |
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Posted 7th Jan 2015 at 18:52
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RetroPug
Seasoned Pro Location: Leicestershire Registered: 15 Jan 2013 Posts: 2,473 Status: Offline |
Post #5
Buying uprated cams plus a remap for many hundreds of pounds for 10bhp all at the top of the rev range isn't really worth it.You can only go slightly more lairy before hitting a piston so unless you are willing to spend even more and have cutouts machined, it isn't worth spending quite a lot of money for little gain in my opinion. ________________________________________ 61k miles Ph.1 Diablo '6 Project Thread |
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Posted 7th Jan 2015 at 18:55
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Mossy1985
Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #6
Ok fella appreciate your input. I assume you would advocate for a LB charger set up yes? |
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Posted 7th Jan 2015 at 18:58
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demondriverdan
Seasoned Pro Location: Londinium Registered: 29 Nov 2010 Posts: 2,665 Status: Offline |
Post #7
It's only £100 to get the pistons pocketed which isn't a huge amount, gives you a little more space for lift________________________________________ Rallye Race Car |
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Posted 7th Jan 2015 at 18:59
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Mossy1985
Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #8
If I did that what sort of gains could I expect from cams and a remap? Is 10bhp all I could hope for? I'm more about torque than bhp tbh |
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Posted 7th Jan 2015 at 19:03
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RetroPug
Seasoned Pro Location: Leicestershire Registered: 15 Jan 2013 Posts: 2,473 Status: Offline |
Post #9
I'd have thought that higher lift and longer duration would lose you low down torque at the expense of higher peak torque and peak power?So for a track car good gains but a road car maybe worth a rethink. ________________________________________ 61k miles Ph.1 Diablo '6 Project Thread |
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Posted 7th Jan 2015 at 19:13
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Mossy1985
Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #10
RetroPug wrote: I'd have thought that higher lift and longer duration would lose you low down torque at the expense of higher peak torque and peak power? So for a track car good gains but a road car maybe worth a rethink. I'm open to suggestions |
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Posted 7th Jan 2015 at 19:17
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RetroPug
Seasoned Pro Location: Leicestershire Registered: 15 Jan 2013 Posts: 2,473 Status: Offline |
Post #11
Mossy1985 wrote: RetroPug wrote: I'd have thought that higher lift and longer duration would lose you low down torque at the expense of higher peak torque and peak power? So for a track car good gains but a road car maybe worth a rethink. I'm open to suggestions Very basically: I have performed none of these modifications, but the best gains for money spent is LBSC. All gains are pretty expensive though. ITBs will either give good gains and be similarly expensive (very roughly) or even better gains but with the added expense of lairier cams and pocketed pistons. ________________________________________ 61k miles Ph.1 Diablo '6 Project Thread |
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Posted 7th Jan 2015 at 19:24
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ryangti6
Seasoned Pro  Location: Pontypool Registered: 01 Sep 2006 Posts: 1,839 Status: Offline |
Post #12
Agree with retropug, the money if will cost to put them in a standard engine just isn't worth it for the little gain.Although it's only 100 to have pistons pocketed it'll still cost you more as you'll be taking the head off or crank out to remove them which is either a gasket set or set of main bearings and big end bearings whichever way you do it and that's assuming you are capable of doing that work yourself or obviously going to cost more on top. Lbsc is definitely the way to go money to power wise especially with the prices second hand kits go for. If you want torque buy the v6 conversion in the whats it worth section, again power for money I don't think they can be beaten really. ________________________________________ Ryan |
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Posted 7th Jan 2015 at 20:09
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blandy
Seasoned Pro  Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #13
demondriverdan wrote: It's only £100 to get the pistons pocketed which isn't a huge amount, gives you a little more space for lift Any ideas on the "best" cam if you had pistons done. I.e is pt81 the limit still? i have a spare engine in bits which im tempted to get the pistons done and build it up or is it really not worth it. |
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Posted 8th Jan 2015 at 10:26
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,847 Status: Offline |
Post #14
cutouts just allow the pt81 to be timed properly and safely.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 8th Jan 2015 at 10:33
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demondriverdan
Seasoned Pro Location: Londinium Registered: 29 Nov 2010 Posts: 2,665 Status: Offline |
Post #15
PT81s are a good bet if you have cutouts and fairly available. I think WP runs Newman PH2s on cutouts as well?________________________________________ Rallye Race Car |
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Posted 8th Jan 2015 at 12:09
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Mossy1985
Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #16
What sort of power gains could I expect to see from a set of the pt81s? |
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Posted 8th Jan 2015 at 13:18
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Mossy1985
Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #17
Just read on another post on here that it might be an idea to pocket the pistons a fair bit and fit pt81s? Anyone had this before? |
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Posted 8th Jan 2015 at 13:31
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jeffers
Forum Admin Location: Leeds Registered: 14 Dec 2003 Posts: 3,702 Status: Offline |
Post #18
Mossy1985 wrote: Just read on another post on here that it might be an idea to pocket the pistons a fair bit and fit pt81s? Anyone had this before? I run Pt81's and pocketed pistons as do a few others, the reason is simple.... If you time pt81's up correctly in a otherwise standard engine its likely there'll be some sort of contact. They can be fitted yes but to time them up correctly you really need enlarged pockets. ________________________________________ Team Running Engine again!Team Negative Camber! My Budget track engine build thread! Now appearing at a Trackday near you!!  |
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Posted 8th Jan 2015 at 13:50
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #19
Jeffers do you feel the pt81's were a good investment/improvement i.e i guess the overall pub figures are nothing to write home about but do they feel much of a improvement on the road/track |
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Posted 8th Jan 2015 at 14:39
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jeffers
Forum Admin Location: Leeds Registered: 14 Dec 2003 Posts: 3,702 Status: Offline |
Post #20
blandy wrote: Jeffers do you feel the pt81's were a good investment/improvement i.e i guess the overall pub figures are nothing to write home about but do they feel much of a improvement on the road/track To be honest I've not really run mine too much in anger yet, as I had a few issues when I took it to Oulton in November meaning it's only covered Dyno time to run it in and 3 sighting laps (mine is not road legal anymore) I have been in Dennis's car which my engine is virtually the same as and that is quick, but Dennis's has a lot of suspension work too so felt quick in the first place. I guess the engine feels more responsive from what I can tell but like I say I've not really used it in anger to comment, I'm hoping to have it out next month if that helps?! ________________________________________ Team Running Engine again!Team Negative Camber! My Budget track engine build thread! Now appearing at a Trackday near you!! |
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Posted 8th Jan 2015 at 15:06
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #21
yeah would be interesting to see as the figures are never going to sound amazing but its real world performance well more track performance thats intriguing |
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Posted 8th Jan 2015 at 16:42
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Mossy1985
Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #22
It's looking like pocket pistons and pt81s may be the way forward? |
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Posted 8th Jan 2015 at 17:23
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jeffers
Forum Admin Location: Leeds Registered: 14 Dec 2003 Posts: 3,702 Status: Offline |
Post #23
Mossy1985 wrote: It's looking like pocket pistons and pt81s may be the way forward? Just be aware that in pocketing the pistons your basically gonna be doing a bottom end rebuild, well you may as well as it's in bits anyway? ________________________________________ Team Running Engine again!Team Negative Camber! My Budget track engine build thread! Now appearing at a Trackday near you!! |
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Posted 8th Jan 2015 at 18:09
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Mossy1985
Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline |
Post #24
jeffers wrote: Mossy1985 wrote: It's looking like pocket pistons and pt81s may be the way forward? Just be aware that in pocketing the pistons your basically gonna be doing a bottom end rebuild, well you may as well as it's in bits anyway? Yea my thinking is pick up a known good engine and then strip at my leisure, get the pistons sorted and build it up as and when I have the time and funds |
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Posted 8th Jan 2015 at 20:46
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jeffers
Forum Admin Location: Leeds Registered: 14 Dec 2003 Posts: 3,702 Status: Offline |
Post #25
Mossy1985 wrote: jeffers wrote: Mossy1985 wrote: It's looking like pocket pistons and pt81s may be the way forward? Just be aware that in pocketing the pistons your basically gonna be doing a bottom end rebuild, well you may as well as it's in bits anyway? Yea my thinking is pick up a known good engine and then strip at my leisure, get the pistons sorted and build it up as and when I have the time and funds Thats pretty much what i did, much easier when your not on a timescale!  ________________________________________ Team Running Engine again!Team Negative Camber! My Budget track engine build thread! Now appearing at a Trackday near you!! |
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Posted 8th Jan 2015 at 21:02
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