Technical valves etc

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Technical valves etc

BAZZYB12

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would it be possible to add another intake valve and exaust valve to each cylinder on a punto mk1 55 1.1l engine, obviously making it 4 valves per cylinder. Also could engine headers be considered, if both of these are possiblities, could someone point me in the general dierection to get these, breakers or online shopping?

Cheers
Christian
 
what would need to be changed for the punto mk1 gt turbo 1.4 to work in my mk1 1.1, would it even fit in my engine bay? i know everyone just says buy a GT or whatever but I have full custom white leather so i dont really want to sell it

Cheers
 
A very easy conversion would be to a 75. All you need is a spacer for the manifold (if you don't want to use the 75 exhaust) the engine loom from the 75, ECU, key, code box, and the 75 engine. The loom can be plugged in the loom connector at the bulk head.

To answer your original question. Yes you can fit a 16v head to your engine. But it is not quite as easy as you would like it to be because you have to modify the pistons as well as the pulley arrangement for the timing belt, whicxh is a lot of head ache.

Adding to more valves to the head is not possible.
 
cheers old school, its the gt turbo engine that i ideally want to replace, only thing is i cant seem to find many at the breakers, if i converted that 1.2 to have 16v instead of 8 would that fly alot more than the 1.1
 
BAZZYB12 said:
cheers old school, its the gt turbo engine that i ideally want to replace, only thing is i cant seem to find many at the breakers, if i converted that 1.2 to have 16v instead of 8 would that fly alot more than the 1.1


You could always buy puntoboys.. Im sure ull see it in a scrap yard soon near you, at the rate hes going ... pmsl :p
 
could i directly remove a 16v head off another mk1 model, also would the 16v carboretta be universal also. what modifying would need to be done to the pistons as stated by 'oldschool' finally, which turbocharger would be ideal for 1.1 mk1, would the gt one by fine?

Cheers
Christian
 
Last edited:
The 1.2 16v would be much faster than the 1.1. Also it does have quite some tuning potential.

Advantage over the GT engine is the lower weight making it handle better. If you get a late 1.2 16v or 1.4 16v you will save even more weight. If you want to go the turbo route, wait till the new turbo engines are released, which is very soon.

Fitting the GT engine is quite some headache and very costly if you can't do it yourself.
 
unless your car is emensly modified and crafted from at least 200kilo's of wag and filler, then there isn't much point trying to bodge a twin cam head to a 1.1, the block on teh 1.1 is too small for a startoff for the 1242 16 head to fit

if you want a fairly easy engine upgrade, then plumb a 75 and associated gear in there, (it made a fair differenece to my 60 having 75 gear in there).
next stage up is the 85/ 1.2 16vsporting engien (also comes in cars with a 85 badge)
then the 1.6 8v, this is a dog of an engine, its heavy, drives like **** compared to its sucessor, and pretty much untunable without 5k thrown its way, for which money you could buy a whole 5m of decent car.
then the 1.4 8v turbo, which is possible, but you are basically going to have to strip the interior and whole front end down to subframe and beyond to do this, to fit mechanicals and electrical componants.

sorry to say it, but if you want a 16v head fitted to the 1.4 8v you are wasting your time, ask anyone on puntosports.co.uk who will tell you about how good the 8v is as it stands.

all that lot probably sounds confusing, so to sum up.
option 1) 1242 16v from a sporting/85, into whatever car you have inc lots of wiring (that means dashboard out again matey!), I think the gearbox is different too.
2) buy a sporting, and fit your goodies
3) buy a gt, and fit your goodies

they really are so cheap that its a more financially viable option, even if doing the work yourself
 
faster4_tec said:
unless your car is emensly modified and crafted from at least 200kilo's of wag and filler, then there isn't much point trying to bodge a twin cam head to a 1.1, the block on teh 1.1 is too small for a startoff for the 1242 16 head to fit

if you want a fairly easy engine upgrade, then plumb a 75 and associated gear in there, (it made a fair differenece to my 60 having 75 gear in there).
next stage up is the 85/ 1.2 16vsporting engien (also comes in cars with a 85 badge)
then the 1.6 8v, this is a dog of an engine, its heavy, drives like **** compared to its sucessor, and pretty much untunable without 5k thrown its way, for which money you could buy a whole 5m of decent car.
then the 1.4 8v turbo, which is possible, but you are basically going to have to strip the interior and whole front end down to subframe and beyond to do this, to fit mechanicals and electrical componants.

sorry to say it, but if you want a 16v head fitted to the 1.4 8v you are wasting your time, ask anyone on puntosports.co.uk who will tell you about how good the 8v is as it stands.

all that lot probably sounds confusing, so to sum up.
option 1) 1242 16v from a sporting/85, into whatever car you have inc lots of wiring (that means dashboard out again matey!), I think the gearbox is different too.
2) buy a sporting, and fit your goodies
3) buy a gt, and fit your goodies

they really are so cheap that its a more financially viable option, even if doing the work yourself

Sorry to correct you here, but the 1242 16v head fits straight on the 1108 block. Adapting the wiring for the 1242 16v engine in a Punto 55 is very easy too.
 
If you put a 1242 16v head on a 1108 block the cambelt tensioner cannot take up the slack as the 1108 block is shorter than the 1242. The head does physically fit as I have tried it but gave up cos of the cambelt issue.
 
richcinq said:
If you put a 1242 16v head on a 1108 block the cambelt tensioner cannot take up the slack as the 1108 block is shorter than the 1242. The head does physically fit as I have tried it but gave up cos of the cambelt issue.

Don't get me wrong, I don't want to encourage anyone to do the 16v 1108cc conversion, but it is possible. You have to choose the right cam belt for it. You could use the 999cc 16v belt with a slight modification of the tensioner and adapt the crank pulley.

I just wanted to clear that the above statement was not correct.
 
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