1242s have one, 1108s don't.
Therefore
1242s must have an inherant vibration that 1108s don't, but the crank must be able to support a) the damper, and b) the vibration.
Cheers
D
Off Topic ah but can you super charge one??
- Thread starter slugworth1987
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Off Topic ah but can you super charge one??
1242s have one, 1108s don't.
Therefore
1242s must have an inherant vibration that 1108s don't, but the crank must be able to support a) the damper, and b) the vibration.
Cheers
D
do you run your cento with a harmonics damper pulley RC?
I ran the cento pressed steel on on mine for ages until I some how ended up doing research at college on harmonic fatigue and realising how powerful the forces are. and after fitting it (might be placebo effect) the engine did feel.... different.
But if you think about it... making harmonic dampers costs stupid amounts and hundreds of hours dyno/testing... fiat wouldnt waste all that money plus the extra cost of the part, for no reason.
just noticed the torques for the crank bolt if it would make any differance
1.1 8v - 100nm
1.2 8v - 100nm
1.2 16v - 20nm then 90degrees
Ash
1.1 8v - 100nm
1.2 8v - 100nm
1.2 16v - 20nm then 90degrees
Ash
Nope, I have a fully balanced 1108, so no bob weight on the end.
I wondered vaguely whether the enlarged area of the damper could be used to drive an SC and whether it would fit the 1108, but only idle speculation.
My next transplant is a 2.4 litre, starting a week tomorrow.
Cheers
D
Is that down to the factory balancing tollerances?
To be honest, I was thinking about scrapping the damper to loose weight off the crank, but I would obviously be balancing rods pistons and sending the crank, flywheel and pressure plate off to be done properly to try and rid the vibration.
Or is it all down to harmonics
To be honest, I was thinking about scrapping the damper to loose weight off the crank, but I would obviously be balancing rods pistons and sending the crank, flywheel and pressure plate off to be done properly to try and rid the vibration.
Or is it all down to harmonics
OP
OP
holy crap i would offer my car to be projected on trying to keep it standard bar the sc, just imagine the 899 whining (more) with an sc on it... mmmmmmmmmmm dreams
the alternator pulleys (assuming the car it came from never had hydraulic pas or aircon) are swapable between 1.1 1.2 8valve (not sure about 1.4 or 16valves)
Or is it all down to harmonics
harmonics...
got to remember that harmonics only effect small areas of rpm.
its to do with the natural frequency of the crankshaft (with all parts attached)
also iirc it only really causes problems if the engine is at a steady rpm on the bad area.
so say if the engine had the worse harmonics at 4000rpms and this just so happened to be 70mph in 5th gear then it would cause a problem.
same if it was at 900rpms... engine you hammer its self to death at idle.
you can never remove harmonics... only move them.
Ballancing the crank/adding new pulleys for a SC will move frequently...
The old harmonic dampener debate. different forum, different car, same debate
I'll use a working example.
The 4agze - as found in import AW11 (MR2 mk1), AE92, AE101, AE111 (corolla's).
As standard they have a harmonic dampener front pulley, however a common upgrade is to swap it for a billet item (different ratio)
for example
Now, I agree that it was put there for a reason, but if everything is balanced up I think you can probably get away with it if you run a lower annual milage. I only say this because I havent heard of many (any) failing due to crank fatigue, but then the toyota crank is a very beefy item.
How long the FIAT crank will last, is a different question. Only one way to find out
And as for woodruff size, the 4agze isn't that large
I'll use a working example.
The 4agze - as found in import AW11 (MR2 mk1), AE92, AE101, AE111 (corolla's).
As standard they have a harmonic dampener front pulley, however a common upgrade is to swap it for a billet item (different ratio)
for example
Now, I agree that it was put there for a reason, but if everything is balanced up I think you can probably get away with it if you run a lower annual milage. I only say this because I havent heard of many (any) failing due to crank fatigue, but then the toyota crank is a very beefy item.
How long the FIAT crank will last, is a different question. Only one way to find out
And as for woodruff size, the 4agze isn't that large
