Well I've just been for the first run with the 1242 fitted & what a difference - I have to say I'm impressed .
The car feels pretty much the same as the 1108 up to 2000/2500rpm , but after that it comes on the cam & just flies . The engine will easily hit 6000rpm now , the 1108 was definately gasping for air at that speed .
Here's the spec.....
Mk2 Punto 1242 engine fitted with a Mk1 Punto 75 head , cam & inlet manifold . The throttle body is the Punto 75 lower half (38mm) fitted with the Cinq Sport top half . The lower half has been machined to match the aperture of the top section . I've had a 15mm alloy spacer made up to fit between the inlet & TB , as the stock 75 spacer is too tall .
The MPI injectors have been removed & the holes blocked with rubber bungs & automotive silicon sealant (leaves me the option to go MPI if I choose) .
I've read on other posts that the 75MPI inlet won't work as it will puddle fuel. I can't see that as when it's fitted to the car , the bottom of the inlet manifold is angled towards the head at about 20deg and there's no flat or concave areas so there's nowhere for the fuel to puddle . It certainly works fine .
The car has Magnecor leads & seems to run better on the standard NGK plugs than the Bosch Super 4's (I personally think they're rubbish)
At the moment the car has the Cinq Sport 4-1 exhaust manifold , but on Sunday I'll be fitting the Punto 75 4-2-1 manifold & twin downpipes . A bit of cutting & welding will mate that to the rest of my Cinq system.
The air filter is the stock Cinq Sport fitted with a K&N panel filter & the front part of the box virtually cut away to nothing . I'm waiting for the induction kit to be delivered from Yanninya - hopefully that will give me a bit more power.
You may be interested to hear of my slightly unusual way that I fitted the engine .
What I did was remove the head on the old engine , support the engine with a hoist and then remove the left engine mount (left as you look at the engine).
Then lowering the engine on the hoist , this allowed the engine to tilt until the top of the block was clear of the front chassis leg & allowed the engine to be removed from the gearbox. (this won't work with the head in place) I then fitted the new engine in the same way , and fitted the head once the engine was bolted in place .(the head was already off my new engine )
That saved loads of time & work as I didn't need to disturb the other 2 engine mounts , the driveshafts and the gear linkage .
Hope that helps others planning a similar swap.
John
The car feels pretty much the same as the 1108 up to 2000/2500rpm , but after that it comes on the cam & just flies . The engine will easily hit 6000rpm now , the 1108 was definately gasping for air at that speed .
Here's the spec.....
Mk2 Punto 1242 engine fitted with a Mk1 Punto 75 head , cam & inlet manifold . The throttle body is the Punto 75 lower half (38mm) fitted with the Cinq Sport top half . The lower half has been machined to match the aperture of the top section . I've had a 15mm alloy spacer made up to fit between the inlet & TB , as the stock 75 spacer is too tall .
The MPI injectors have been removed & the holes blocked with rubber bungs & automotive silicon sealant (leaves me the option to go MPI if I choose) .
I've read on other posts that the 75MPI inlet won't work as it will puddle fuel. I can't see that as when it's fitted to the car , the bottom of the inlet manifold is angled towards the head at about 20deg and there's no flat or concave areas so there's nowhere for the fuel to puddle . It certainly works fine .
The car has Magnecor leads & seems to run better on the standard NGK plugs than the Bosch Super 4's (I personally think they're rubbish)
At the moment the car has the Cinq Sport 4-1 exhaust manifold , but on Sunday I'll be fitting the Punto 75 4-2-1 manifold & twin downpipes . A bit of cutting & welding will mate that to the rest of my Cinq system.
The air filter is the stock Cinq Sport fitted with a K&N panel filter & the front part of the box virtually cut away to nothing . I'm waiting for the induction kit to be delivered from Yanninya - hopefully that will give me a bit more power.
You may be interested to hear of my slightly unusual way that I fitted the engine .
What I did was remove the head on the old engine , support the engine with a hoist and then remove the left engine mount (left as you look at the engine).
Then lowering the engine on the hoist , this allowed the engine to tilt until the top of the block was clear of the front chassis leg & allowed the engine to be removed from the gearbox. (this won't work with the head in place) I then fitted the new engine in the same way , and fitted the head once the engine was bolted in place .(the head was already off my new engine )
That saved loads of time & work as I didn't need to disturb the other 2 engine mounts , the driveshafts and the gear linkage .
Hope that helps others planning a similar swap.
John
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