1.6 head on a 1.4 block

[phunkynova]

I have a 1.4 NV motor block and wish to put a Head from a c16sei on to it is there any mod's I need to do or can I just bolt it straight on ie do I use a cam belt from the 1.6 or the 1.4 ?, must the head be skimmed? and so on .
Thanks for your help.:thumb:

[burgo]

why do you want to put that head on it?

[thegingerwhinger]

complete waste of time, all your doing is increasing the compression ratio, you want to go the other way and reduce it to give you a better compression ratio.

[phunkynova]

The bigger valves and the round ports and I have a set of R1 bike carbs for this head. The car will be used for rally's.

[fastcar1cars]

Use the c16sei bottom end too?

[burgo]

The bigger valves and the round ports and I have a set of R1 bike carbs for this head. The car will be used for rally's.now we've established a valid reason ditch the 1.6 head and get a 1.4sri head, exactly the same valves and round ports as the 1.6 but much smaller combustion chamber

[phunkynova]

Only one problem with that is I live in the Czech Republic and standard Nova/corsa A parts are not to be had even more so parts for sr sri gte gsi so must use what I have. Do not want to run the 1.6 motor as I would like to run in class 1 for cars up to 1.4l.

[thegingerwhinger]

now we've established a valid reason ditch the 1.6 head and get a 1.4sri head, exactly the same valves and round ports as the 1.6 but much smaller combustion chamber:thumb:

[blue_peg_16v]

complete waste of time, all your doing is increasing the compression ratio, you want to go the other way and reduce it to give you a better compression ratio.

totaly wrong on a n/a engine increasing the compresion increases power you reduce on a turbo motor not n/a, hence why people fit 1.3 or 1.2 heads to 1.4 blocks as it increases the compresion ratio due to the chamber shape and therefore increases power.

the best standard parts cobble together 1.4 is
1.4 bottom end
1.2/1.3 head
1.3 sr cam

[andy_mk3]

AFAIK, the 1.6 head on the 1.4 block will reduce c/r. I know someone who has put a 1.4 head on a 1.6 block and the compression was silly high, it was pinking and eventually wrecked the stem seals.

[burgo]

Only one problem with that is I live in the Czech Republic and standard Nova/corsa A parts are not to be had even more so parts for sr sri gte gsi so must use what I have. Do not want to run the 1.6 motor as I would like to run in class 1 for cars up to 1.4l.the c14se engines are extremely common in mk3 astra's.

you would have to skim so much off a 1.6 head that you'll have to pocket the pistons

[phunkynova]

Thanks for the reply's still not sure what to do as there is a conflict of opinion between you all.:confused:

[Welsh Dan]

burgo and blue peg know thier stuff.

[phunkynova]

ok but my round port inlet manifold would that work on a 1.2/1.3 head
?

[burgo]

ok but my round port inlet manifold would that work on a 1.2/1.3 head
?it would bolt on but the ports wouldnt match, you might be able to get the ports to match but then you looose the bigger valves the c14se head offers

[phunkynova]

so a c14se head is the best way to go then:thumb:

[novalovingned]

Some good info here......

Would it be worth while putting a 1.4 8v head on the 1.6 8v and use a 270 cam?

[phunkynova]

yep but then I'm in the 1.6 class and here there are lot of well sorted Skoda kit cars running in that class would need to spend a small Fortune to match them for power.:cry:

[mowgli]

ok. 1400 bottom end. c14se head, round port intake. decent cam. bike carbs. it will be pretty good. the head will cope with some porting too

[greg1.4]

either

1400 bottom end, 1200/1300 sr head/decent cam, square port inlet and carb/s..

1400 bottom end, 1400 round port head, round port intake, decent cam/carb/s..

[phunkynova]

yer thanks boys it looks like I must sort out a c14se head then a cam..Thanks for all the input :thumb: ..Any one got a c14se head they can send to CZ :d

[amggsi]

Sort of related to this, but I have just aquired an automatic Daewoo Nexia 1.5. (Got it free before anyone asks!)

I also have a 1.3 engine with a doubtful bottom end, would it be possible to use the Daewoo block and 1.3 head and have a decent engine for my SR?

[thegingerwhinger]

totaly wrong on a n/a engine increasing the compresion increases power you reduce on a turbo motor not n/a, hence why people fit 1.3 or 1.2 heads to 1.4 blocks as it increases the compresion ratio due to the chamber shape and therefore increases power.

the best standard parts cobble together 1.4 is
1.4 bottom end
1.2/1.3 head
1.3 sr cam

thats what im saying!! no point in him fitting a 1600 head to a 1400 bottom end. he'd have to go the other way "hence why people fit 1.3 or 1.2 heads to a 1.4 blocks"

[blue_peg_16v]

in your reply tho you said it would increase compresion and he needed to go the other way hence my coment lol ah well sorted now lol

[Trendall]

this is probs kinda pointless but if i fitted a 1.0 head to my 1.2 would that increase compression and thats a good thing for power right?

[Welsh Dan]

A 1.0 head is overhead valve, your 1.2 is overhead cam. It wouldn't fit.

[mowgli]

this is probs kinda pointless but if i fitted a 1.0 head to my 1.2 would that increase compression and thats a good thing for power right?

to add, tuning a 1.2 is not worth it, especially if it is an spi. the percentage gains will look great, but it is so low hp to start with that it is not worth the expense.

[Trendall]

fair enough cheers guys just looking for cheap power gains untill i have the money and 4th year ncb for a 2L turbo conversion :)

[burgo]

to add, tuning a 1.2 is not worth it, especially if it is an spi. the percentage gains will look great, but it is so low hp to start with that it is not worth the expense.

actually the 1.2i's respond very well. i cant remember who it was but someone on here got about 75bhp out of one by just bolting on other standard parts

[mowgli]

which bits? mpi stuff and a 1400 head?

[burgo]

which bits? mpi stuff and a 1400 head?nope, i believe it was something like a gsi exhaust manifold and system, sri cam, 1.4 spi inlet manifold and injector as well i think. if i get bored ill hunt it out