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31st December 2010, 01:12
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#1
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L-plater
Join Date: Aug 2010
Location: Perth, Scotland
Posts: 69
Car(s): Citroen Saxo VTR, Citroen AX, Mercedes 190, Honda
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Difference between jp4 and jp4s?
As far as i can tell thru searching, the s version has an aluminium inlet and a higher rev range.
Is this all?
In theory I'll be changinag the inlet to a J4 anyway, and once i change over the head internals, and fitted some ph3s it will be getting mapped.
Anything else im missing?
Valve-piston clearance with the ph3s alright?
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31st December 2010, 01:35
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#2
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Saxperience Forum Bum
Join Date: Oct 2009
Location: Blackburn
Posts: 4,739
Car(s): A few
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iirc the only difference is the inlet, and cams. As you are camming it, and using the J4 inlet, I cant see there being a difference
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Quote:
Originally Posted by MikeKinetik
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Quote:
Originally Posted by L20VTS
I only got stuck because I couldn't get out
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31st December 2010, 01:38
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#3
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L-plater
Join Date: Aug 2010
Location: Perth, Scotland
Posts: 69
Car(s): Citroen Saxo VTR, Citroen AX, Mercedes 190, Honda
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Excellent. So no point in searching for a rare jp4s then, when a jp4 will do the job 
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31st December 2010, 01:43
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#4
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Saxperience Forum Bum
Join Date: Oct 2009
Location: Blackburn
Posts: 4,739
Car(s): A few
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Not really mate. IIRC the TU5JP4S was the 1 used in the C2 VTS and the TU5JP4 was used in the 207 etc.
They are basically the same engine iirc, with just the few little bits like the inlet etc...which will be changed anyway
Ill double check when im slightly more awake tomorrow for you though mate...dont wanna lead you down wrong path.
__________________
Quote:
Originally Posted by MikeKinetik
I'm a cunt
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Quote:
Originally Posted by L20VTS
I only got stuck because I couldn't get out
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Last edited by SAM-S44MDS-; 31st December 2010 at 01:48.
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The Following User Says Thank You to SAM-S44MDS- For This Useful Post:
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31st December 2010, 01:47
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#5
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L-plater
Join Date: Aug 2010
Location: Perth, Scotland
Posts: 69
Car(s): Citroen Saxo VTR, Citroen AX, Mercedes 190, Honda
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Cheers mate.
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31st December 2010, 17:03
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#6
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Regular Poster
Join Date: Apr 2008
Location: Sheffield
Posts: 276
Car(s): Peugeot 106 GTi, Clio 172
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JP4s I beleive has pocketed pistons for the wilder cam like J4's and slightly stronger, but they are much rarer and more pricey obviously.
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