318_tC

Anyone know if this is avaible for the tC?

ZPIracing

we have a kit....we have only tested it on two cars thus far you could become the third?

WeDriveScions

^ I'll do the how-to!

318_tC

What does the kit consist of

nodsetse

Did vibration to the cabin increase much, and what were the power gains?

I know there's no issues doing this with Nissan's 2.5, and it can supposedly give up to 16 more hp, but hadn't heard of anyone doing a tC's 2.4 until now.

ZPIracing

I dunno we did not dyno before and after I can tell you this the car revs like a sport bike

400amonth

Remove the balance and you will get the shaft around 50,000 miles with motor damage.

Hey...it still will be cool while it last so I would go for it......can you put a price on being happy?

WeDriveScions

Yeah, when we talked about it at first, my first thought was the endless discussion about vibrations and motor damage... but, many other race setup guys are running it on other makes and doing quite well...

I like your attitude.... no price on happiness!

soros151

And this does what? Heard of it, but never seen it.

zer0

Its an old DSM trick, it works well and free'd up 10hp on my talon.

From vFaq.com
So why do it?

Simply put, reliability. The balance shafts are only there for your butt, not the engine. They are there to cancel out vibrations at idle and around 3-4K that would be annoying to the average driver that just owns a car for transportation, and wants the drive to be as smooth as possible. For the enthusiast, though, the slightly increased vibration from removing the shafts can easily be tolerated (right after doing this mod, you may think the vibration is much worse, but the vast majority of people barely notice it after a couple of days). The balance shaft system adds more complexity to the engine.

There is no reliability decrease from removing the shafts as long as the job is done properly. Reliability should actually increase, and the engine should rev slightly easier, as there is less reciprocating weight for the crank to accelerate/decelerate (roughly 5-7 lbs for both shafts). The only real drawback is that the engine will vibrate a bit more at idle and about 3-4K rpm (some people have reported it vibrating harder at 6K and up, but I haven't seen that on my 3 cars). You do NOT have to have your entire shortblock balanced to do this job. It will smooth out the engine a bit, but it isn't absolutely necessary.

soros151

dang, this is awsome. Thanks for the info zer0.

HP_Pirate

so now that we know what it is and the pro's and con's. how hard is it for us DIY guys. and what will the kit be running as far price.

soros151

I did a google and saw that most kits don't cost over $60. That is without the job. Get it? Maybe while rebuilding the motor I will do that.

WeDriveScions

It's easy on some of the other setups, and I will do a good how-to when ZPI is good to go for selling the kits... if it's easy enough!

Thanks ZERO! nice to hear a positive reputation for them!

Glad to see there isn't the endless debate!

Now to get em in and run away!

zer0

Yea its another great mod to lighten up the rotating assembly.

HP_Pirate

so any Idea when or what zpi's cost will be. defenatly interested.

glad to see at least one forum is still positive. lets keep it that way.

WeDriveScions

^ I believe they're still running it in their cars to assess vibrations and get a good testing out of the way before they throw them our direction... I'd rather wait a bit, than have someone get in over their heads and complain when vibrations bug them, or they get a wierd result.

And... love the positive... wish it was all that way.

zer0

I belive Charles (TurboCustoms) has already done this mod. I asked him a long time ago.

soros151

Maybe he can chime here, to see some opinions.

PghtC

yeah I had it done on my Chevy Cavalier, 2.4L quad 4 motor. picked up about 20HP...what a great mod it was...of course it was hard as heck to do it since the oil pump was driven off the shafts...

So I had to retrofit a 2.3L pump on the block, drill a new oil return passage through the block and plug all the old ones... But man was it worth it. :D