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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » coscast or non-coscast


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Author coscast or non-coscast
craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
3rd May 07 at 17:49   View User's Profile U2U Member Reply With Quote
how can i tell if my engine has the cocast head on it?and what are the differences?
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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3rd May 07 at 17:57   View Garage View User's Profile U2U Member Reply With Quote


The coscast one has coscast stamped on it too, but you can't see it too easily.
craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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3rd May 07 at 17:58   View User's Profile U2U Member Reply With Quote
what are the differences apart from the core plug?
Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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3rd May 07 at 17:58   View User's Profile U2U Member Reply With Quote
Doesn't go porous like gm ones.
ed
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Registered: 10th Sep 03
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3rd May 07 at 18:03   View User's Profile U2U Member Reply With Quote
Yes they do, they are less prone to doing so though.
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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3rd May 07 at 18:10   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by sri power
what are the differences apart from the core plug?


To look at, nothing bar the stamp.
Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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3rd May 07 at 18:25   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by ed
Yes they do, they are less prone to doing so though.

True, but i've hardly ever seen a porous coscast head.

The Gm ones are easy to fix anyway.
C4RL0
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Registered: 30th Sep 06
Location: Cumbria
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3rd May 07 at 19:51   View User's Profile U2U Member Reply With Quote
The early coscast heads also had straighter inlet ports meaning less restriction on intake.
craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
3rd May 07 at 23:22   View User's Profile U2U Member Reply With Quote
cheers i will check wich mine is tomorrow.

 
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