anyone tried a ph4 in a vtr?

1. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #1 3rd June 2009, 19:42

   anyone tried fitting a ph4 into a 90bhp vtr with an s1 inlet? would like some info on this? i know they say the wildest cams you can fit to a vtr on "standard" induction is the ph3(i already have this) but have never really looked into the wilder cams for my car, what are the main issues stopping it? valve clearance or something? im going standalone shortly when i strip and paint my car etc and was going to go turbo but might just mod a bit further fisrt then go turbo when i get a vts? was thinkin tbs but there a bit expensive but would lovew to run cams that you can run with bodies hence im here in this thread lol
   ps ill defo be buying pred ecu to run whatever i decide
2. user_25706 Established Member Joined: Jul 2008 Taunton, Somerset Posts: 1182 Millenium Falcon

   #2 3rd June 2009, 20:23

   Found this in another thread from WilliamsVTS
   
   

   Quote:

   Originally Posted by williamsvts when choosing a cam you want to leave about 1.5mm valve to piston clearance, you never know what could happen lift on standard cam is 8.49mm and has valve clearance of 3.01mm, so you can work it out from there (although this would need to be worked out from lift at TDC). if you were wanting cams with more lift you would either need your pistons rebated or some forged pistons. you would also need to consider throttle bodies as cams with that much lift would be being restricted by the standard inlet.

3. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #3 4th June 2009, 20:09

   no one got any advice on this
4. vtr_chris90 Established Member Joined: Jun 2008 nuneaton Posts: 1796 LY R26

   #4 4th June 2009, 20:38

   you may need forged internals to run the ph4, it is said to be a 5050 on rallye reg with this cam on valve/piston contact the specs stated on newmans are actually wrong aswell by the way, its wilder than they state
   
   heres the cam on newmans.... http://www.newman-cams.com/pdf/peugeot.pdf
   
   and a quote from sandy on rallye reg...
   
   "The Newman PH4 actually lifts the valve 11.5mm peak, the specs they publish on the site doesn't seem to correlate in an obvious way with the actual profiles I've received. I don't know why that is and I'm not complaining, because the profiles I've had from them so far have been closer to what I wanted than the actual spec. I've plotted the curve for the PH4, I do it for every cam I use to help me develop the rest, but I don't know that my various cam suppliers would be too chuffed if I published their profiles publicly! If they weren't concerned, I'd imagine the curves would be available already, I wish they were.
   Cams from different manufacturers are quite different and what some of the manufacturers make for the specialist engine builders are quite different in many to what's publicly available. But clever cam design/choice isn't much use without knowing what else is needed anyway."
   
   also the catcam 645 is said to be very very close to valve/piston contact and that has 11.25mm of lift, i spoke to qep about this and he said when they fitted them to 3 of there rallyes for trial runs, they were worried about the contact and hoped they didnt touch lol
   
   it is a great cam though, and would def need bodies imo, also if you decide to go boost, your better off getting a cam specced to run turbo catcams have one for that, a freind of mine had it in his and he was very impressed with it
   
   hope this helps mate
5. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #5 4th June 2009, 21:44

   tempted to try it and find out but then i risk fooking a set of valaves and poss pistons........ to try or not to try? was going to get head skimmed too but i dont think that will be such a good idea now lol
6. vtr_chris90 Established Member Joined: Jun 2008 nuneaton Posts: 1796 LY R26

   #6 4th June 2009, 22:08

   lol it will be very close mate, i think it would hit and personally i would get forgies or pocketed pistons to be safe, as i am tempted to run the ph4 with bodies next year, they are the plans anyway
   
   are you thinking of boost or bodies next though?
   
   also what about your current engine youve only just cammed that lol
7. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #7 5th June 2009, 18:04

   wanting to go boost but im toying with a few ideas at the min????? going on hol in aug so no work takes place till after????
8. VtsTom Saxperience Forum Bum Joined: Oct 2007 Spalding-ish Posts: 2512 Mk4 Anniversary golf. 106 Quiksallye

   #8 5th June 2009, 18:09

   Cheaper solution would be to get a set of 16v pistons (about £40 2nd hand) and get some valve cut outs (£130 from my place). You will have enough room and slightly higher compression due to the shape of the piston.
   
   Should think standalone would be needed just to get it to idle right
9. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #9 5th June 2009, 18:12

   i dont want to be altering pistons if i can get away with it lol, valce cut outs generally lead to disaster and i have a heavu foot lol