Cam choice for tu5jp4 engine

1. simo8028 Newbie Joined: Aug 2017 Posts: 4 Peugeot 206 1,6 16v Citroën C2 inlet manifold 4-

   #1 16th August 2018, 08:44

   Hi all
   
   I have a tu5jp4 engine and looking for at set of cams.
   
   I´m running C2 VTS alloy inlet, 4-1 manifold race-cat and sports exhaust. Also i have a set of J4 adjustable pulleys. I wont´t be replacing the valvesprings, unless it´s absolutely necessary.
   
   I´m currently looking at stock J4 cams, Newman PH3 or Catcams 1322703.
   
   I´ve looked at a few forums online and my main concern is valve to piston clearence.
   
   My aim is around 145 bhp, with decent midrange tourqe, as i will be driving the car everyday.
   
   Obviously the car will get a remap after the cams are fitted.
   
   Kind regards
   Simon
2. Chipwizards Frequent Poster Joined: Nov 2009 Posts: 576

   #2 17th August 2018, 18:29

   There's very little clearance on a JP4.
   JP4S and J4 have small cutouts in the pistons to allow for a sloppy timing belt on the stock cams which allows a little scope for bigger cams.
   Whatever you choose, proceed with extreme caution when doing the timing.
   Also consider that the valves are closest a few degrees after TDC, not at TDC.
3. simo8028 Newbie Joined: Aug 2017 Posts: 4 Peugeot 206 1,6 16v Citroën C2 inlet manifold 4-

   #3 18th August 2018, 08:20

   Thank you for your reply.
   
   I am aware of the tight clearence, however all the cams I’ve listed should clear the pistons at TDC but obviously I will be carefull.