Zetec-SE 1.6 Head on 1.4 Block?
18-04-2010, 07:28 PM
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Stephen Hill
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Zetec-SE 1.6 Head on 1.4 Block?
I'm currently designing a rebuild of a 1.4 Zetec-SE engine and my original plan was to have the head ported to the same size of a 1.6.
Would it be possible to simply buy a second hand 1.6 head, have it cleaned and honed, rather than having a 1.4 head machined to size?
Therefore, would the head fit onto the block without any further modifications and which head gasket would I use?
Ta
Would it be possible to simply buy a second hand 1.6 head, have it cleaned and honed, rather than having a 1.4 head machined to size?
Therefore, would the head fit onto the block without any further modifications and which head gasket would I use?
Ta
Last edited by gatekiller; 18-04-2010 at 07:30 PM.
18-04-2010, 08:15 PM
#3
PassionFord Post Troll
there both se's so i guess it would 
maybe the puma 1.7 would also fit, the racing puma engine comes with better cams and inlet so that could be a better possibility deoending what you want from it
maybe the puma 1.7 would also fit, the racing puma engine comes with better cams and inlet so that could be a better possibility deoending what you want from it
18-04-2010, 08:47 PM
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Stephen Hill
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I'm only really interested with the head itself, will be replacing everything inside the head.
18-04-2010, 09:26 PM
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Stephen Hill
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23-04-2010, 09:11 PM
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Stephen Hill
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Should save me a few bob in machining costs
20-05-2010, 04:39 PM
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Stephen Hill
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I've actually decided that I'm not doing to do this now. While it is technically possible, I have since found out that a custom head gasket would be required and a little machining to the main block.
Also, the compression ratio would decrease because of the bigger width of the combustion chamber - which is undesirable.
@RedLexcus: I would post picture but there really isn't anything different to see with the eye.
Also, the compression ratio would decrease because of the bigger width of the combustion chamber - which is undesirable.
@RedLexcus: I would post picture but there really isn't anything different to see with the eye.
12-08-2010, 01:58 PM
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Stephen Hill
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Hi Stuart,
I decided not to fit a 1.6 head to a 1.4 block simply because the compression done was larger than 1.4 and would require a custom head gasket to be designed and created.
So I've opted to have the current 1.4 head gas flowed with bigger exhaust valves.
Cheers
Stephen
I decided not to fit a 1.6 head to a 1.4 block simply because the compression done was larger than 1.4 and would require a custom head gasket to be designed and created.
So I've opted to have the current 1.4 head gas flowed with bigger exhaust valves.
Cheers
Stephen
13-08-2010, 02:34 AM
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Wahay!! I've lost my Virginity!!
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Hi Stuart,
I decided not to fit a 1.6 head to a 1.4 block simply because the compression done was larger than 1.4 and would require a custom head gasket to be designed and created.
So I've opted to have the current 1.4 head gas flowed with bigger exhaust valves.
Cheers
Stephen
I decided not to fit a 1.6 head to a 1.4 block simply because the compression done was larger than 1.4 and would require a custom head gasket to be designed and created.
So I've opted to have the current 1.4 head gas flowed with bigger exhaust valves.
Cheers
Stephen
Right, all the heads in the zetec se range are interchangable providing you use the gasket to go with the larger item. no custom jobs necessary.
however, compression is the issue!
using a 1.4 bottom end with:
1.25 head raises compression, small valves but goes well.
1.6 head lowers compression, slightly larger valves better cams as far as i know.
1.7 head, lower compression still, better cams and vvt if you can wire it up.
with your engine id do either:
1.6 head, 1.6 gasket, skim head to regain compression, 1.6 cams (cheapest method)
1.4 head, light skim, 1.4 gasket, 1.6 cams plus port/polish/bigger valves etc.
1.25 head, 1.4 gasket, 1.6 cams. (be carefull if head has been skimmed before, too high compression WILL melt pistons. although small valved, after approx 2500rpm this combo flies!!!
my personal fave is a 1.6 bottom, 1.6 cams and 1.4 head!!!!
1.25 head on 1.6 is possible but pistons dont last long!!!
hope this helps!!!!
09-12-2010, 09:02 AM
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1.4 slow focus machine!!
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The head gaskets gone on my 1.4 Focus and instead of simply replacing it i decided to look on the internet to see what i could do to make it a bit quicker
how much of a difference does it make using the - 1.25 head, 1.4 gasket, 1.6 cams?
or would i be better off usind the 1.6 head, 1.6 gasket and 1.6 cams?
Thanks
how much of a difference does it make using the - 1.25 head, 1.4 gasket, 1.6 cams?
or would i be better off usind the 1.6 head, 1.6 gasket and 1.6 cams?
Thanks
23-04-2012, 09:29 PM
#17
I've found that life I needed.. It's HERE!!
1 Right, all the heads in the zetec se range are interchangable providing you use the gasket to go with the larger item. no custom jobs necessary.
however, compression is the issue!
using a 1.4 bottom end with:
1.25 head raises compression, small valves but goes well.
1.6 head lowers compression, slightly larger valves better cams as far as i know.
2 1.7 head, lower compression still, better cams and vvt if you can wire it up.
with your engine id do either:
1.6 head, 1.6 gasket, skim head to regain compression, 1.6 cams (cheapest method)
1.4 head, light skim, 1.4 gasket, 1.6 cams plus port/polish/bigger valves etc.
1.25 head, 1.4 gasket, 1.6 cams. (be carefull if head has been skimmed before, too high compression WILL melt pistons. although small valved, after approx 2500rpm this combo flies!!!
my personal fave is a 1.6 bottom, 1.6 cams and 1.4 head!!!!
1.25 head on 1.6 is possible but pistons dont last long!!!
hope this helps!!!!
however, compression is the issue!
using a 1.4 bottom end with:
1.25 head raises compression, small valves but goes well.
1.6 head lowers compression, slightly larger valves better cams as far as i know.
2 1.7 head, lower compression still, better cams and vvt if you can wire it up.
with your engine id do either:
1.6 head, 1.6 gasket, skim head to regain compression, 1.6 cams (cheapest method)
1.4 head, light skim, 1.4 gasket, 1.6 cams plus port/polish/bigger valves etc.
1.25 head, 1.4 gasket, 1.6 cams. (be carefull if head has been skimmed before, too high compression WILL melt pistons. although small valved, after approx 2500rpm this combo flies!!!
my personal fave is a 1.6 bottom, 1.6 cams and 1.4 head!!!!
1.25 head on 1.6 is possible but pistons dont last long!!!
hope this helps!!!!
2.WRONG the 1.7 water and oil path ways are diffrent. Also the vvt wont work on any other ecu than the 1.7 and a 1.7 ecu would overfuel and kill a 1.4 so it would need be removing.
26-02-2023, 06:25 PM
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Right, all the heads in the zetec se range are interchangable providing you use the gasket to go with the larger item. no custom jobs necessary.
however, compression is the issue!
using a 1.4 bottom end with:
1.25 head raises compression, small valves but goes well.
1.6 head lowers compression, slightly larger valves better cams as far as i know.
1.7 head, lower compression still, better cams and vvt if you can wire it up.
with your engine id do either:
1.6 head, 1.6 gasket, skim head to regain compression, 1.6 cams (cheapest method)
1.4 head, light skim, 1.4 gasket, 1.6 cams plus port/polish/bigger valves etc.
1.25 head, 1.4 gasket, 1.6 cams. (be carefull if head has been skimmed before, too high compression WILL melt pistons. although small valved, after approx 2500rpm this combo flies!!!
my personal fave is a 1.6 bottom, 1.6 cams and 1.4 head!!!!
1.25 head on 1.6 is possible but pistons dont last long!!!
hope this helps!!!!
however, compression is the issue!
using a 1.4 bottom end with:
1.25 head raises compression, small valves but goes well.
1.6 head lowers compression, slightly larger valves better cams as far as i know.
1.7 head, lower compression still, better cams and vvt if you can wire it up.
with your engine id do either:
1.6 head, 1.6 gasket, skim head to regain compression, 1.6 cams (cheapest method)
1.4 head, light skim, 1.4 gasket, 1.6 cams plus port/polish/bigger valves etc.
1.25 head, 1.4 gasket, 1.6 cams. (be carefull if head has been skimmed before, too high compression WILL melt pistons. although small valved, after approx 2500rpm this combo flies!!!
my personal fave is a 1.6 bottom, 1.6 cams and 1.4 head!!!!
1.25 head on 1.6 is possible but pistons dont last long!!!
hope this helps!!!!
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