confused on j4/jp4 and jp4s part numbers
as a lot of people on here i assumed that the jp4/jp4s engine uses larger inlet valves compared to the j4 engine
looking on the citroen parts website the j4 and jp4 inlet valve part numbers are exactly the same its only the jp4s which apparantly uses different inlet valves secondly, again i was under the immpression that the jp4 valve springs and therfore the caps were different (weaker) to the j4 counterparts, even all the big websites say to fit j4 springs when fitting wilder cams.. however again the citroen service website states that the j4 and jp4 use the same springs and caps.. and again its only the jp4s use different springs so currently citroen are telling me the jp4 engine i have has the same size valves as the j4 engine and that i dont need to fit j4 springs/caps in to my jp4 head to run wilder cams, this seems like a load of bull shit to me, do you guys recon they've just got part numbers mixed up across the 3 different engines?? otherwise what i and a lot of other people seem to think are wrong when it comes to fitting the saxo vts head internals in to the jp4 head to make it 'stronger' |
Honestly, I wouldn't be surprised if they were the same. Forum bullshit and all.
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think im still going to go ahead and fit saxo springs/caps in to my head and keep the jp4 followers and collets, they must be stronger, everythingin me is telling me to listen to citroen and forget the forums advise but i do strongly believe the part numbers are wrong lol its not like fitting saxo vts internals is a new thing its been done for years in countless engines.. |
I've just had a look and between a 106 gti and a 206 tu5jp4 there are difference's
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ive screen shot all the part numbers from a saxo vts, c2 jp4 and c2 jp4s i can post them if you like
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Interesting. I have a JP4S engine though so I had no worries :)
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J4 (saxovts +106 gti) does have different valves + springs + caps
jp4 (plastic rocker cover ,no block breather pipe + plastic paper filter type ) has larger inlet valves |
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Don't get me wrong everything that's been pointed out is what I knew to be true just wondered why the part numbers don't seem to match up :s
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jp4 was never fitted to any saxo or 106 started with the xsara +pug206 j4 engine was only ever fitted in a saxo =106 |
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