however, a warning to all ppl who from HK, the GD1 pulley is JUST FIT GD1 not GD3.
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however, a warning to all ppl who from HK, the GD1 pulley is JUST FIT GD1 not GD3.
Quote:
Originally Posted by TypeG
no need to get defensive of any claims against a said product - Are you aiming to sell :rolleyes: ?
Seriously, TypeG and others - does installing JUST a lighter crank pulley help at all , or is it a must for midly modded cars + above ?
Ive read up that STOCK cars should not attempt such a mod...
i hope i can have one only since it is for 1.3L Jazz but if i want to sell this product here, i think my post will be deleted anyway so no pint to talk about this at all.
no mod is need to install this
It's a waste, and would probably be the last performance mod you should look at - long after everything else has been sorted out...much better go for the lightened flywheel as already stated.
And I think Bren offers a much more technical explanation and raises valid points as opposed to "a book said so - so it must be right!"
And to be honest I don't believe Australia is underdeveloped in terms of car modification....the cost just becomes too expensive to justify at times.
Look at it realistically. You change the pulley and save 100grams, but you are still running the standard flywheel. OK the engine "might" spin a tiny bit more freely from the lightweight pulley, but the motor still has to turn a flywheel weighing something like 10-12kgs...now you can save 100grams on a pulley, or about 5KGS on the flywheel....think about it.
IMO you would only change the pulleys for the sake of doing a mod...it won't offer any real gains, but will/may have an detrimental affect on the lifespan of the engine.
An exhaust and air filter won't f*ck your engine up like these pulleys can...
i cbf to argue as i am tired to argue with some people who dun even readlly understand what a light pulley can offer. the gain of the pulley is more than any JDM exhuast.
also it is not 100 g lighter. It is 1-2kg lighter on pulley itself and consider the pulley is not as big as a flywheel.
and price wise it cost like $300 and this price may just enough for u to buy a second hand brand muffler.
"a book said so - so it must be right!"---- depends on comparing to who. If a book vs mod here. I trust the book. Fair Enough?
well, maybe it is waste for u since u even think ARC airbox is a waste of money so well.... what else can I say
Have a look at the other side of the engine. You WILL notice more of a difference by taking off say 3-4Kgs from the flywheel than say 1Kg from the crank pulley.Quote:
Originally Posted by TypeG
Harmonics can destroy an engine........what's trying to be said is that the costs of this mod outway its benefits and there are better bang for buck mods than changing the crank pulley. The idea behind this applies to ALL engines.......not just the Jazz.
of coz i will notice more different on changing flywheel with 3-4kg off as it is 1-2 kg lighter than lighter pulley. That's is the fact. However, the benefit of these two items are different. I will also agrue flywheel is better than pulley but if they both suit Jazz, i will get both as we always want to max. our benefit.
Again, it has been released for quite a while and i never heard anyone have problem with that little pulley. destory the engine...... let see who destory the engine then...
TypeG always in commotion lol :D
Install a llight weight pulley kit and the results usually u get is better throttle response and more power. Light weight pulley is usually made from aluminium billet, making them immensely lighter than their factory steel counterparts. This lower weight yields a large reduction in the rotating inertia of the belt train, allowing the engine to accelerate faster. The effect is similar to fitting a lightened flywheel and is particularly noticeable in the lower RPM range. This is because the power required to accelerate a heavy pulley accounts for a much greater proportion of the available power at low RPM.
By changing the pulley diameters, to a larger one, also reduces the amount of power needed to turn the alternator and power steering pump while still retaining the original serpentine belt.
Honda engine in particular, I think is the B-series where they had problems, the crank main bearing are very sensitive. The Harmonic balancers are a needed component to protect, usually the front bearing of the crank from periodic vibrations that can occur at certain rpm in any engine. Over time vibrations can cause or aggravate wear.
You can however change all the other pulley eg the power steering, a/c and other small pulleys but the crank pulley is a no no. Not so sure about the new honda engines, but I guess they are the same.
Hope this info helps some people.
or email a msg to Spoon CEO, he can tell us to do it or not.
(I think you can sent it in English)
I am talking on this pulleyQuote:
Originally Posted by pinklady
to make things simple then.... y would they wanna make something that useless and its been going on for ages now???? i was never told that u needed to overhaul ur internal engine just to fit pulleys.... neither does any magazine from my knowledge....Quote:
Originally Posted by bennjamin
mrfit.... when they highly recommend the pulley, did they mentioned anything else??? like side effects or whether u have to change anything to suit the pulley????? they must have said other stuff as well.... and wat are these pulleys for anyway???? i mean the ones that they recommend... which pulleys are they?Quote:
Originally Posted by MRFIT