Re: Lightened flywheel question...
 

8 lbs chromoly here. likin it so far, we'll see how it takes to boost compared to stock

Re: Lightened flywheel question...
 

LOOOOVE my exedy flywheel, wouldnt trade it back for the world. lightened flywheel + boost= :6

Re: Lightened flywheel question...
 

Thanks for all the input. I think I will still go with a lightened (but not so much) flywheel - around 11#

As for the underdrive pulley comment thanks for the advise but I really don't see how that would have any effect on oil pressure? The pulley doesn't drive the oil pump nor does it allow the engine to "rotate slower" causing reduced pumping. All it will be doing is driving my alternator slighlty slower.

I looked up unorthodox racing's opinions on this and they said that Honda/Acura engines are internally balanced and therefore there is no need for a harmonic balancer or a heavy stock larger diameter pulley. Anyone else have any bad experiences with underdrive pulleys? Am I out to lunch for wanting to run one?

Re: Lightened flywheel question...
 

your oil pessure is built at your bearings, if you have too much clearance you wont have any oil pressure,
I used to think the same way like you about the pulley not having anything to do with oil pump, if you search me you will find my post about it. I never learned until it happened to me
the pulley caused vibration, the vibration wear out your main and rod bearings, even though it does not affect your oil pump it ---- up your bearings, I wish I would have took pictures of my bearing clearance before and after the pulley. look around you will see what I am talking about. I was warned, and I say I will have to learned for myself, I did . I am using a ls vtec right now not because I wanted to, but because my b16 had no oil pressure, so I had a ls block as a spare so I put it in so I wont have any down time. now I need to rebuild the b16 with new bearings, because I was hard headed. but it will be my spare now

Re: Lightened flywheel question...
 

fluidamper, ati or U.R are all aftermarket pulleys. i don't believe any of that bs about my aftermarket crank pulley killed my engine. thats not the case. if you have one of those cheap ass ebay crank pulleys what the hell do you expect. honda engines are internally balanced so a light weight crank pulley that is true and well made and balanced from the factory will not harm your engine. the stock pulley doesn't even contain any damnpening material. yea since the ctr motor had an n1 pulley from the factory they toasted their bearings too? im half asleep so i'll elaborate later :X

Re: Lightened flywheel question...
 

i remember i read somewhere that the honda crancks are counter-balanced with the weight of the stock cranck pulley so if you put a lighter one it will break..
and this ---- happened to me too i had lots of shaved metal in my oil after 2k miles with the light cranck pulley.. i lost a cranck, a rod etc.. listen to us before you use one.. i admit mine was a poor quality cranck pulley but it was balanced (not with the cranck) and it still happened

Re: Lightened flywheel question...
 

Counterbalancing has nothing to do with the flywheel or crank pulley. Honda motors are internally balanced as well.

Install quality crank pullies/flywheels, and have the balance checked before installing them, no more problems.

Re: Lightened flywheel question...
 

honda crank pullies have no dampening material... LOL...


And then you wake up. Dont use those shitty non-harmonic balancer type of crank pullies no matter what the brand.

Re: Lightened flywheel question...
 

i know for a fact that d series never had any dampening material i.e. rubber have you ever cut one in half ? i guess not. any evidence on you disbelief?

Re: Lightened flywheel question...
 

One easy way to know if ANY engine needs to be balanced with the flywheel is...the flywheel will have a offset bolt or some sort of dowel pin in the flywheel that will only allow you to bolt it on one way. Some motors only have a mark that needs to be lined up...but most of the time you can only bolt it on one way. Just FYI...