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17-10-2005, 11:34 PM | #1 | ||
Banned
Join Date: Jan 2005
Location: Over there
Posts: 401
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Hello all - thought i'd pop into your forum for a moment as hopefully I will be fortunate enough to have an au motor to install in my car soon.
I was wondering if anyone knows the exact differences in short motors between the VCT and non VCT AU motors. Ie, bore, stroke, compression, etc... Have heard that VCT had higher compression - was this due to different pistons or was it in the head? Any info appreciated. |
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18-10-2005, 03:00 PM | #2 | ||
Audi S3
Join Date: May 2005
Location: Sydney.
Posts: 8,307
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all i know is that the VCT has variable cam timing and its more powerful the the other OHC motor.
and that probably didnt help at all.
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18-10-2005, 05:02 PM | #3 | |||
Barra Turbo > V8
Join Date: Jan 2005
Posts: 25,939
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Quote:
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18-10-2005, 07:56 PM | #4 | ||
TL40 Wagon?
Join Date: Dec 2004
Location: Sydney
Posts: 2,377
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VCT engine has a different head and different cam. Bottom end is the same.
Head inlet and exhaust valve sizes the same and i doubt the compression is any different. |
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18-10-2005, 08:26 PM | #5 | |||
XB in parts...
Join Date: Dec 2004
Location: Sydney
Posts: 2,890
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Quote:
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Daily Driver 2019 Ford Escape...looking for XR6T's. |
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18-10-2005, 08:37 PM | #6 | ||
Miami Pilot
Join Date: Jan 2005
Location: ACT
Posts: 21,703
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I'd PM Casper - he is likely to have the info somewhere. The info, or some if it, should also be in the owners manual.
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The Hammer: FG GTE | 376rwkw | 1/4 mile 11.793 @ 119.75mph 1.733 60' (4408lb) 1 of 60 FG MK1 335 GTEs (1 of 118 FG Mk 1 & 2 335 GTEs). Mods: Tune, HSD/ShockWorks, black GT335 19” staggered replicas with 245 & 275/35/19 Michelin Pilot sport 5s Daily: BF2 Fairmont Ghia I6 ZF, machine face GT335 19” staggered Replicas with 245s and 275s, Bilsteins & Kings FPV 335 build stats: <click here> Ford Performance Club ACT |
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18-10-2005, 09:06 PM | #7 | ||
Regular Member
Join Date: Jan 2005
Location: SMITHFIELD NSW
Posts: 472
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well i think with the normal AU 4.0 they had 157kw and the VCT in the Fairmont ghia had 168kw and the XR6 had 172kw.
hope that answesr the question.
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18 T6 Multivan 03 Ba Xr turbo 300rwkw |
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18-10-2005, 09:49 PM | #8 | |||
buickman
Join Date: Dec 2004
Location: eastern suburbs Melb Vic
Posts: 1,462
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Quote:
Its only the head & cam that different. Plus the exhaust on the XR6 gave it the extra KW's over the ghia VCT mtr. buickman |
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22-10-2005, 07:58 AM | #9 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Posts: 12,083
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Quote:
ALL AU I6 bottom ends are the same.. end of story. The VCT Head is the only difference from the HP or Intec engines. As for compression, there is a slight issue with the S1 VCT heads. They seemed to have a manufacturing fault that left them mith margianly less compression than the later VCT's. Same head but there appears to be a "fix" (possibly a slight shave) that upped the compression. Nothing official from Ford and it was never listed anywhere. This was found by JMM after they noticed something odd and started testing. We are only talking minimal difference here but it could account for 3-5rwkw missing in the earlier VCT's. Not that that seems to be a great big issue..not on mine anyhow
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Older, wiser, poorer. Now in Euro-Trash. VW Coupe V6 4motion.
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22-10-2005, 02:43 PM | #10 | |||
buickman
Join Date: Dec 2004
Location: eastern suburbs Melb Vic
Posts: 1,462
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First I heard of it all documents & figures I've read has all the AU six mtrs compression from factory at 9.65.1. Nothing that a good exhuast system would'nt fix buickman |
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22-10-2005, 02:44 PM | #11 | |||
FF.Com.Au Hardcore
Join Date: Dec 2004
Posts: 12,083
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Quote:
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Older, wiser, poorer. Now in Euro-Trash. VW Coupe V6 4motion.
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