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Author BTCC Cavaliers
Butler
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Registered: 2nd Jun 05
Location: London
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25th Nov 07 at 11:55   View User's Profile U2U Member Reply With Quote
What was with these engines. C20XEs I assume? Did they use a reverse head? What sort of power were these engines putting out? Just been watching some old BTCC videos on youtube and it got me curious.
P1CK4D
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Registered: 19th Jun 06
Location: Around Essex Somewhere
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25th Nov 07 at 12:02   View User's Profile U2U Member Reply With Quote
Video links
SportBoy
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Registered: 5th Oct 01
Location: Retford, Nottinghamshire
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25th Nov 07 at 12:03   View User's Profile U2U Member Reply With Quote
think only the later ones used the reverse head .. might be wrong tho .. and about 300bhp i 'think'
mattk
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Registered: 27th Feb 06
Location: St. Helens
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25th Nov 07 at 12:07   View User's Profile U2U Member Reply With Quote
A pic of the swindon head

Butler
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Location: London
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25th Nov 07 at 12:13   View User's Profile U2U Member Reply With Quote
barter
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Registered: 27th Oct 07
Location: essex
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25th Nov 07 at 12:24   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by P1CK4D
Video links
Butler
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Registered: 2nd Jun 05
Location: London
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25th Nov 07 at 12:37   View User's Profile U2U Member Reply With Quote
Lazy

http://www.youtube.com/watch?v=C7NrmvbA0iA
spankyjames
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Registered: 26th Jun 06
Location: Corsham, Wiltshire
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25th Nov 07 at 13:48   View User's Profile U2U Member Reply With Quote
http://www.youtube.com/watch?v=JHk3D2XhuTc&feature=related

reminds me of toca 2 lol
Lee Wilson
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Registered: 20th Feb 06
Location: Fareham, Hants Drives: XE Corsa
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25th Nov 07 at 14:18   View User's Profile U2U Member Reply With Quote
Wow, a vauxhall engine thats the right way round
SVM 286
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Registered: 13th Feb 05
Location: pain
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25th Nov 07 at 14:30   View User's Profile U2U Member Reply With Quote
N'ah, that would have to be a Manta, Kadette, Chevette or MK I Cavalier for that Lee
Matt H
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Registered: 11th Sep 01
Location: South Yorkshire
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25th Nov 07 at 14:32   View User's Profile U2U Member Reply With Quote
Im sure Daimo priced up having a swindon head transplant, was a thread about it a while ago
Lucky B
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Registered: 7th Apr 02
Location: Lunatic asylum. Drives: Hard & Fast.
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25th Nov 07 at 14:55   View User's Profile U2U Member Reply With Quote
Why do folk posting up car stuff on you tube and the like spoil it by playing crap music along with the clip!?!?
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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25th Nov 07 at 15:15   View Garage View User's Profile U2U Member Reply With Quote
The earlier ones had a 'normal' head, the reverse head didn't make a lot of difference to the power apparently.
Paul H
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Registered: 11th Aug 03
Location: Lincoln.
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25th Nov 07 at 15:27   View User's Profile U2U Member Reply With Quote
pmsl at this one
http://www.youtube.com/watch?v=bCij9mYIokA
My boss having a good old ding dong with cleland
Colin
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Registered: 4th Apr 02
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25th Nov 07 at 15:32   View User's Profile U2U Member Reply With Quote
Can I be the 1st idiot to ask 'reverse head - what & why?'
Paul H
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Registered: 11th Aug 03
Location: Lincoln.
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25th Nov 07 at 15:33   View User's Profile U2U Member Reply With Quote
induction on the front at a guess more air
BarnshaW
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Registered: 25th Oct 06
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25th Nov 07 at 15:43   View User's Profile U2U Member Reply With Quote
so the only real benefit is for throttle bodies etc? im a bit puzzled by the benefits of this? someone explain
Mattb
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Registered: 2nd Feb 03
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25th Nov 07 at 15:52   View User's Profile U2U Member Reply With Quote
i belive the reverse heads were fitted to allow better routing of the exhaust and to allow the engine to be mounted lower to the floor. its all down to aerodynamics under the car and handling
SVM 286
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Registered: 13th Feb 05
Location: pain
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25th Nov 07 at 16:18   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Colin
Can I be the 1st idiot to ask 'reverse head - what & why?'


When the exhaust is on the side facing forward it pours hot air over the engine and more importantly inlet manifold as it gathers in the bulkhead area.

Having the inlets facing the bulk head restricts airflow, cold air supply and manifold design.

Facing the inlets forward allows for a greater freedom of angle of mounting and manifold design.
It also allows you to have a lovely great air box mounted directly in the flow of air in front of the vehicle to scoop up buckets of cold, dense air and shovel it into the engine.

Having the exhaust facing towards the bulkhead allows for a simpler, shorter, more efficient exhaust that doesn't have to curve under the engine first, in order to make it's way to the back of the car.

Also, because the exhaust doesn't run under the engine, the engine can be mounted marginally lower in the car to lower the centre of gravity Colin.

Butler
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Registered: 2nd Jun 05
Location: London
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25th Nov 07 at 16:20   View User's Profile U2U Member Reply With Quote
SVM why were crossflow engines ever introduced?
SVM 286
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Registered: 13th Feb 05
Location: pain
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25th Nov 07 at 16:40   View User's Profile U2U Member Reply With Quote
To ease maintenance and promote better combustion because pre-crossflows tend to suffer with hot spots/heat soak and which can lead to poor running James.

I believe the principles of squish and swirl are better implemented in a crossflow design.

Also, the flow of combusted gases works more naturally in a crossflow design.

That said, there have been some very impressive race tuned Anglia engines.
jr
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Registered: 20th May 02
Location: Kent
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25th Nov 07 at 16:43   View User's Profile U2U Member Reply With Quote
Hello, i belive svm has answerd everything in here i was going to, just with longer and correctly spelt words
SVM 286
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Registered: 13th Feb 05
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25th Nov 07 at 16:53   View User's Profile U2U Member Reply With Quote


Evenin Jimbo
Chris C
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Registered: 2nd Jan 05
Location: Hemel Hempstead
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25th Nov 07 at 19:22   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Paul H
pmsl at this one
http://www.youtube.com/watch?v=bCij9mYIokA
My boss having a good old ding dong with cleland


awesome little vid
16V_1600
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Registered: 7th Oct 07
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25th Nov 07 at 19:28   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Butler
Lazy

http://www.youtube.com/watch?v=C7NrmvbA0iA


Brilliant!

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