Jp4 head

1. 01amatti Regular Poster Joined: Dec 2006 leeds Posts: 313 2003 saxo VTR, 2000 VTS

   #1 22nd February 2012, 20:05

   Have all tu5jp4 heads got the same size valves? Is it just the cams and inlet manifold in the tu5jp4s that is different?
2. 01amatti Regular Poster Joined: Dec 2006 leeds Posts: 313 2003 saxo VTR, 2000 VTS

   #2 23rd February 2012, 12:17

   Also does anyone know which cams would be better to use? 106gti ones or a tu5jp4 performance cam?
3. xsi16v Regular Poster Joined: Jan 2006 Ilkeston, Derbyshire Posts: 469 374 bhp Supercharged 205 GTI, Passat Estate

   #3 23rd February 2012, 18:02

   all valve sizes are the same its just the JP4s cams that are different. You would be better off with a performance JP4 cam over the standard J4 ones.

   1 user thanked this post: 01amatti
4. 01amatti Regular Poster Joined: Dec 2006 leeds Posts: 313 2003 saxo VTR, 2000 VTS

   #4 23rd February 2012, 18:51

   Quote:

   Originally Posted by xsi16v all valve sizes are the same its just the JP4s cams that are different. You would be better off with a performance JP4 cam over the standard J4 ones.

   Finally a response! Thanks! So am I right in thinking I can use a jp4 performance cam with the standard jp4 head internals as long as I use a j4 head gasket? Or would I still need the pistons pocketing?
5. xsi16v Regular Poster Joined: Jan 2006 Ilkeston, Derbyshire Posts: 469 374 bhp Supercharged 205 GTI, Passat Estate

   #5 23rd February 2012, 18:58

   That should work, i'd check clearances first and see if you can use the JP4 gasket to keep the CR decent.