GolfGTIforum.co.uk
General => The garage => Topic started by: dubslug on 05 May 2004, 17:22
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can i fit a 8v gti head to my 1.6 ez coded engine???
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Will have to use your inlet manifold etc and use the gti cam, should give you a bit more hp ;).
Steve.
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so it will bolt on no problems etc etc as it looks different to the one on my motor ???
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Different, in what way?.
Steve.
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think it might just be because the rocker cover is different?? dont want the injection part just the head as i want a gti cam and exhaust manifold on mine, excuss my stupidness but are the injectors not in the head??
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Ahh, injectors in the head. I thought the later heads had injectors in the manifold for better cooling (or is that on Audi heads?).
Remove the injector inserts and screw in blanking plugs, you can get them from your local hydraulics suppler.
Steve.
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you msy well be right as the head is still on another car, im so hopeless with engines
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I thought the injectors were always in the inlet manifold ???
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surely this mod would lower engine compression though? or would the benefits outweigh the gains. i suppose you could get the head skimmed if need be.
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Why would it lower the compression ratio?
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Why would it lower the compression ratio?
i assume the combustion chambers in the GTI head have a bigger volume than those in the 1.6 head.
if the volume is bigger compression will go down, no? if the volume is the same i bow down to your supperior knowledge and crawl back under my stone ;D
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The compression ratio on the gti head will be higher.
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if you increase stroke and/or bore size compression ratiowill go up. that's one of the benefits of putting a 2l bottom end on a 1.8 head. if you are putting a 1.6 bottom end on a 1.8 head you are decreasing the stoke size the bore is the same but compression will go down.
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Not necessarily.
I think you will find that 1.8GL runs at a lower compression ratio than a 1.8 8v gti.
This because the combustion chamber is smaller on the gti.
So with a smaller combustion chamber, putting a gti head on a 1.6 will increase the compression ratio compared to a standard 1.6.
Depends what you are comparing it with.
I think you meant the ratio will be lower compared to a 1.8gti, it will, but it will be higher than the standard 1.6.
The way to get round that is put 1.8 pistons and crank in the same block, as vw only made one block for 1.6 and 1.8. That will give you 1.8L and with the gti head, the same compression ratio as the gti.