MKoers

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• Feb 8, 2011

• #1

As I want to turbo my cinq I'm looking for a punto 75 engine.
But I can't find one with reasonable mileage.
All around 200k Kilometers.

So I thinking of using my current one.

It runs fine but I'm wuried it won't be good for turboing.

The buns for the sparkplugs were gone So I bored it up and placed new buns.
This while the cilinderhead was still on the engine.

Removed most of the debre from the cilinder with a greased drillbit.


The engine runs fine ever since.
But will some left over debree scratch the surface of the cilinder?
It aluminum so kinda soft I gues.

I only want to hone the cilinders as I'm gonna place 16v pistons and rods.

If this is'nt a good idea the next question is...

Will a punto 60 block also fit the 16v pistons and rods?
Or is the bore size different?

 

fingers99

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• Feb 8, 2011

• #2

unto 60 is essentially the same engine with SPI head, different cam.

 

craigb244

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• Feb 8, 2011

• #3

yeh 60 is the same but some (other then the later ones from what i can tell) dont have oil squirters which are great for keeping the pistons cool on a turbo car

 

OP

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• Feb 8, 2011

• #4

I knew about thos oil squirters.
Always thought the punto 75 had a bigger stroke and the 60 had a bigger bore.

But you say the latest 60 engine do have those oil squirters.
Do you know from what year they have that?

 

craigb244

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• Feb 8, 2011

• #5

nope bore and stroke is the same. i think the punto 75 is decked a tiny bit more then the 60 to raise the compression (a good thing if using 16valve pistons as it will help bump the compression up a little as it would be a little to low.)

no idea what engines.
you can also use a 1242 16valve bottom end if you can get them easier/cheaper obviously doing it this way you will have 16valve pistons. also 16v have the oil squirters and a reinforced bottom end... 8valve head will bolt right on and just need the crank pulley swapping for a 8valve one.

 

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• Feb 8, 2011

• #6

Ok,

so the 16v pistons in a 16v engine also don't reach the top?
Did'nt know that.

I'm gonna look around and see what I can find for a nice prise.

 

Brooky

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• Feb 8, 2011

• #7

16v crank looks better than the 8v aswell

 

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• Feb 8, 2011

• #8

I do have a 16v crank.

 

T

Todger182

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• Feb 8, 2011

• #9

I still have a spare 1.2 16v block lying around but thats all it is i'm afraid. It doesn't have anything else on it. You would still need to get a sump, oil pick up, water pump, and seals.

Thanks

X

 

craigb244

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• Feb 8, 2011

• #10

MKoers said:

Ok,

so the 16v pistons in a 16v engine also don't reach the top?
Did'nt know that.

I'm gonna look around and see what I can find for a nice prise.

Click to expand...

yes it has a 0mm deck hight just like if they are in a 8valve. the lower compression comes from the dish in the piston