csweatherston
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Registered: 16th Jan 06
Location: Devon
User status: Offline
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will i be able to put a c16 head on my x16 block??..is it a straight swap??
on the sbd site, theres a modified head oil way??.... these any good?
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L30 SCT
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Registered: 27th Nov 05
Location: aberdeen
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i am putting an x16xe head on my c16xe block
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csweatherston
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Registered: 16th Jan 06
Location: Devon
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any reason?
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L30 SCT
Member
Registered: 27th Nov 05
Location: aberdeen
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well i sent it away to get ported and polished thinking i had bought a c16xe head but i found out it was the x16xe so just going to use it as i have been told it will work fine
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
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interchangable
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csweatherston
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Registered: 16th Jan 06
Location: Devon
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does a polished port make much difference??...
as most people are using a standard lower inlet which has 12" or so of unpolished casting........
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Dean_W
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Registered: 13th Dec 05
Location: Downham Market, Norfolk
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A mantzel inlet makes a hell of an increase on these engines. This is not polished, it makes a shorter inlet tract. It's the length of the inlet and the bends that are no good.
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csweatherston
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Registered: 16th Jan 06
Location: Devon
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a mantzel bolts on to the 'rough casted' lower inlet tho
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ainsley_brader
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Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
User status: Offline
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quote:
Originally posted by csweatherston
a mantzel bolts on to the 'rough casted' lower inlet tho
polishing of the inlets isnt all that tbh you need some turbulence in the inlet. Polishing of the exhausts is more important.
[Edited on 09-09-2006 by ainsley_brader]
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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csweatherston:
you have asked all this before, why ask again?
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L30 SCT
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Registered: 27th Nov 05
Location: aberdeen
User status: Offline
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polishing the inlet manifold is not good as it causes the fuel to go into droplits.
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csweatherston
Member
Registered: 16th Jan 06
Location: Devon
User status: Offline
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dave - because i have just been told by someone that it wont fit, i was double checking....
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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yes it will fit. no need for modifying oilways etc...
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
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quote:
Originally posted by L30 SCT
polishing the inlet manifold is not good as it causes the fuel to go into droplits.
the fuel will go in to drop lets before the the fuel in injected right at the bottom of the inlet straight on to the back of the valves??? good one
Yes flowing it out will help, but it's faily difficult to, and woudl you really feel the 0.5BHP you'd get??
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L30 SCT
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Registered: 27th Nov 05
Location: aberdeen
User status: Offline
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quote:
Originally posted by James R
quote:
Originally posted by L30 SCT
polishing the inlet manifold is not good as it causes the fuel to go into droplits.
the fuel will go in to drop lets before the the fuel in injected right at the bottom of the inlet straight on to the back of the valves??? good one
Yes flowing it out will help, but it's faily difficult to, and woudl you really feel the 0.5BHP you'd get??
where did i say that it would happen in the inlet manifold?
i said by polishing the inlet manifold causes it to happen.
flowing it wouldnt help as the air coming in need some sort of friction causing it to mix the fuel and air. this is why when the head is polished the inlet valves are left a bit ruff. it was gary from migweb that told me the above
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
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Do you have any idea how "rough" a rough finish is on the head?
Polishing the inlet before the fuel goes in will be fine, and how you'd get a polished finish on the inlet anyways.
The finish you're aiming for is similar to rubbing the port with some 600 grit wet and dry, which I think's pretty smooth not like a gravel drive.
Gary has done several heads for me, his work is brilliant, but think you have to see it know what rough means
Also the upper inlet can be polsihed, the transition to the on to the rougher sruface woudl generate suffient turbulent flow to allow a good mix.
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csweatherston
Member
Registered: 16th Jan 06
Location: Devon
User status: Offline
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UPDATE - hopefully buying alex gsi's engine now complete c16xe 
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