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Author Subject: My Cylinder Head
acg558

Junior User

Location: North Queensferry

Registered: 02 May 2010

Posts: 62

Status: Offline
Post #1
Hi guys,

I am totally confused please help.

My garage has ordered new valves for my head and when they arrived my mechanic said they were too big. He measured the valves that are currently in the head and the motor shop said they valves are for 130bhp!!!

As far as I knew you could only put a GTI6 head on a GTI6.

Can anyone shed any light on why I have 130bhp size valves in my head. As far as I am aware there has not been anything changed.

CheersSad

________________________________________

Ph3 China Blue GTi6
Ph3 White GTi6 Track Car
Citroen Xsara, Run about
Posted 2nd Jun 2010 at 18:36
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al4x

Seasoned Pro

Location: Hitchin

Registered: 20 May 2003

Posts: 23,513

Status: Offline
Post #2
I guess an XSI head may have been fitted
Posted 2nd Jun 2010 at 19:06
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acg558

Junior User

Location: North Queensferry

Registered: 02 May 2010

Posts: 62

Status: Offline
Post #3
sorry didn't mean to post this twice

________________________________________

Ph3 China Blue GTi6
Ph3 White GTi6 Track Car
Citroen Xsara, Run about
Posted 2nd Jun 2010 at 23:41
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pgti6

Junior User

Location: Melb Aust

Registered: 20 Aug 2005

Posts: 72

Status: Offline
Post #4
A proper GTi6 head (J4RS) has 34.1mm inlets & 30.6mm exhaust diameter valves.

The 138 hp engine (J4R) head has the same size valves as the 1.9 & 2.0 litre Mi16 heads-34.6mm inlet & 29.7mm exhaust.

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N5 XU10J4RS Road car
D60 XU9J4 Track car 120Kw atw
Posted 3rd Jun 2010 at 09:53
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cooper666

Senior User

Location: doncaster

Registered: 27 Nov 2009

Posts: 778

Status: Offline
Post #5
a proper gti6 head will have [rs] writing tig welded to the head near the thermostat outlet

________________________________________

clio r27
ps3 id:cooperkloe



Posted 3rd Jun 2010 at 21:37
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acg558

Junior User

Location: North Queensferry

Registered: 02 May 2010

Posts: 62

Status: Offline
Post #6
Yeh that's right my head has the RS on it along with the oil spray bars for the cams, camshaft sensor and vacuum pump. I think it may just be the motor shop describing them differently as I have had a few S16's and 6's and this one feels quicker than them

________________________________________

Ph3 China Blue GTi6
Ph3 White GTi6 Track Car
Citroen Xsara, Run about
Posted 4th Jun 2010 at 15:20
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