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Author gas flowing a cylinder head
Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
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18th Dec 03 at 17:23   View User's Profile U2U Member Reply With Quote
ive got a spare one for my td, what should i do to it? my uncle does engine remanufacturing for a living so i have access to everything i need.
BeArDy
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Registered: 7th Aug 00
Location: Manchester
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18th Dec 03 at 17:26   View User's Profile U2U Member Reply With Quote
gas flow it then
Kris TD
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Location: Ware, Hertfordshire
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18th Dec 03 at 17:26   View User's Profile U2U Member Reply With Quote
how do i do that though, there has got too be more to it than just polishing the inside to make it smooth
MikeH
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18th Dec 03 at 17:27   View User's Profile U2U Member Reply With Quote
What exactly is involved in the process by the way?
broster
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Registered: 6th Dec 02
Location: Drives: E39
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18th Dec 03 at 17:27   View Garage View User's Profile U2U Member Reply With Quote
i would also like to no this
MikeH
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18th Dec 03 at 17:28   View User's Profile U2U Member Reply With Quote
do you perhaps try to remove sharp corners from round the ports and stuff?
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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18th Dec 03 at 17:28   View User's Profile U2U Member Reply With Quote
Just open it up a bit, a mate of mine did mine in my shed with a dremel, spent hours and hours on it. Just make sure everything equal.

I assume its the same sort of design as a petrol head. Match the inlet and exhaust to the gaskets.
Kris TD
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18th Dec 03 at 17:30   View User's Profile U2U Member Reply With Quote
yeah not a bad idea that miles, at the end of the day if i fuck it up it only cost me 20 quid.

the 1.7 has the same size valves so i cant change them as easily as i thought

so match it too the gaskets, smooth it all off etc..
broster
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18th Dec 03 at 17:30   View Garage View User's Profile U2U Member Reply With Quote
so to do inlet and exhaut, u just put the gasket on and open it up to them? then put the gasket on the inlet maniofld and exhaust manifold and do the same?
Kris TD
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18th Dec 03 at 17:32   View User's Profile U2U Member Reply With Quote
i cant see why it would be different to a petrol one to be honest
miles
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18th Dec 03 at 17:33   View User's Profile U2U Member Reply With Quote
Put the gasket on as it would fit, then colour in the parts that are inside the gasket holes with a marker pen, then being as smooth as you can, open it out to them. If someone can upload pics I'll email them some of my head later.
broster
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18th Dec 03 at 17:34   View Garage View User's Profile U2U Member Reply With Quote
i can do it, e.mail to m.broster@ntlworld.com u2u when u have sent the e.mails
BeArDy
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18th Dec 03 at 17:35   View User's Profile U2U Member Reply With Quote
well i was in SnS and they where doing a Festa head and all the kid had was a like a Dremal with a sanding head on and he was polishing and smoothing everthing off, like u would a rocker cover 1500's and soapy water.

porting u need to know where u can add the extra ports, would need to find out

why its called port and polish

[Edited on 18-12-2003 by BeArDy]
miles
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18th Dec 03 at 17:35   View User's Profile U2U Member Reply With Quote
Can you upload them? Im on my laptop now, so when I can be assed I'll get them off my desktop and send them over.
Kris TD
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18th Dec 03 at 17:35   View User's Profile U2U Member Reply With Quote
wicked, cheers miles, i look forward to seeing pics
broster
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18th Dec 03 at 17:37   View Garage View User's Profile U2U Member Reply With Quote
may try this myself on an old head!
broster
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18th Dec 03 at 17:37   View Garage View User's Profile U2U Member Reply With Quote
yeah i can d omate, just e-mail them when ur ready
Kris TD
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18th Dec 03 at 17:38   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by broster
may try this myself on an old head!


you may aswell get one thats from a 1.4 16v then if its anygood you can use it.
broster
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18th Dec 03 at 17:39   View Garage View User's Profile U2U Member Reply With Quote
"you may aswell get one thats from a 1.4 16v then if its anygood you can use it. "

yeah, will look out for a cheap one
Kris TD
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18th Dec 03 at 17:41   View User's Profile U2U Member Reply With Quote
i got mine off ebay for 21 quid.
broster
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Registered: 6th Dec 02
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18th Dec 03 at 17:42   View Garage View User's Profile U2U Member Reply With Quote
will look on there now lol
corsa120
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Registered: 4th May 02
Location: Northamptonshire
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18th Dec 03 at 18:20   View User's Profile U2U Member Reply With Quote
he broster this is all i was talking about when i told ya open up the holes to give a high % of flow
broster
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18th Dec 03 at 18:33   View Garage View User's Profile U2U Member Reply With Quote
i get it now!
MikeH
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18th Dec 03 at 18:35   View User's Profile U2U Member Reply With Quote
Why don't vauxhall manufactur them like this to begin with?
broster
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18th Dec 03 at 18:37   View Garage View User's Profile U2U Member Reply With Quote
they do them all to a certain extent, but due to tolorences in the casts and such they cant be perfect, also the time spent doing it would bump up costs loads! this is y the supersprint manifold iv got is quite expencive as it has been matched up to a gasket, dont no it they are all done this way?

[Edited on 18-12-2003 by broster]

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