tooter's manifold adventure...

[tooter]

Originally Posted by malibuguy

having a crank damper has nothing to do with internal balance. The crank actually deflects...especially at higher RPMs & high power outputs. doesnt matter if is a old domestic motor or a k20a in a honda.

without typing out a huge thing about this subject ( I used to work for ATI Racing years ago, who makes the best crank dampers) Most lower output economy motors dont really feature a real crank damper, but rather an accessory damper.

Now that's a damper...

[Kaotic Lazagna]

Originally Posted by malibuguy

having a crank damper has nothing to do with internal balance. The crank actually deflects...especially at higher RPMs & high power outputs. doesnt matter if is a old domestic motor or a k20a in a honda.

without typing out a huge thing about this subject ( I used to work for ATI Racing years ago, who makes the best crank dampers) Most lower output economy motors dont really feature a real crank damper, but rather an accessory damper.

4/20 i made good power (107/104) with a weapon*r header & my own full 2" mandrel-bent exhaust which seems to be a great match for our motor. 2.25" would most likely shift the power band upwards, but with minimal gain. I would test on mine, but Im working on a turbo kit now.

Yeah, I have a 2.25" (crush bent) resonator back on my sedan, and it pushed the torque up past 3,500 rpm, where I'm rarely ever at. With how my car is (that exhaust, K&N sri, NST CR-Lite crank pulley, and my heavy rim/tire combo), it really feels like I have turbo lag up until I pass that point. I want my torque back down lower

[Bluevitz-rs]

Either way you go is up to you but I've seen the stock pulley fail on a corolla where the rubber separated from the outer ring and left my friend stranded on the side of the road. A solid pulley will never fail. I'm sure the rubbers only there to lessen vibration to the belt driven accessories anyway. I've had mine for well over 100,000 km to no ill effect.

[Kaotic Lazagna]

But in no way am I saying my car is gutless, I've surprised some of my friends with having a total of 4 people in my car. LOL

[malibuguy]

^ buy my old exhaust from antho ;) hes selling it cheap

[Kaotic Lazagna]

Originally Posted by malibuguy

^ buy my old exhaust from antho ;) hes selling it cheap

I'd love to since that's one of the best sounding exhausts on a Yaris I've heard. But, any extra cash (which is 0 right now) I have will have to go towards camera gear (camera gear can make me money, whereas modding my car eaets my money ).

[cali yaris]

Setting the record straight:

1. The Yaris stock pulley DOES have a small rubber damping strip.
2. Straight from a Toyota engineer: "The purpose is to reduce noise in the cabin ONLY; it has nothing whatsoever to do with engine longevity".
3. Conclusion: An aftermarket pulley might cause a bit more cabin noise/vibration, but that is all.
4. #3 is proven by the hundreds of aftermarket Yaris pulleys out there with not one provable engine failure or shred of evidence that a solid pulley causes damage on this car.
5. This has all been covered over and over again on this forum and many others -- anyone bothering to do a search first wouldn't need to rehash the argument, at least in reference to the Yaris.

Are we good now?

[Flipper_1938]

Originally Posted by cali yaris

Setting the record straight:

1. The Yaris stock pulley DOES have a small rubber damping strip.
2. Straight from a Toyota engineer: "The purpose is to reduce noise in the cabin ONLY; it has nothing whatsoever to do with engine longevity".
3. Conclusion: An aftermarket pulley might cause a bit more cabin noise/vibration, but that is all.
4. #3 is proven by the hundreds of aftermarket Yaris pulleys out there with not one provable engine failure or shred of evidence that a solid pulley causes damage on this car.
5. This has all been covered over and over again on this forum and many others -- anyone bothering to do a search first wouldn't need to rehash the argument, at least in reference to the Yaris.

Are we good now?

They didn't do a damn thing else to reduce cabin noise....why'd they pick the crank hub to sound deaden?

[why?]

Originally Posted by Flipper_1938

They didn't do a damn thing else to reduce cabin noise....why'd they pick the crank hub to sound deaden?

probably because it fit, and it came from another car.

[malibuguy]

cant have ying without the yang ;)

[Kaotic Lazagna]

Originally Posted by malibuguy

cant have ying without the yang ;)

lol, once I get some paying gigs, I'll have some extra cash for other hobbies

[cali yaris]

It reduces vibration felt with the hands through the steering wheel, from what I was told. More vibration than noise, I guess.

Smoothness is associated with more expensive cars? I dunno, nor do I care much.

[Bluevitz-rs]

I don't know about the Yaris, but every one of the motor mounts on the Echo has a big chunk of cast steel mounted to it, two of them rubber mounted for vibration reduction. It just adds weight to the car for all I care about vibrations. The only vibrations I'm ever aware of are at idle.

[tooter]

Well, I actually like it when idling you can't even tell if the engine is on or off except for the needle on the tach...

...but that's just the daily driver in me, I guess.

[Captain Slow]

lucky you, I've got the A/C idle drop, which is apparently a very common thing on the Yaris. it idles smooth as glass, then dips for a second likes it's going to stall then goes back up. from what I've read though it's very common and considered normal by Toyota techs...something to do with the gas saving features of the car.

[tooter]

Mine also does that to on AC which we hardly ever run. It senses a load and then notches up the idle. The idle also goes up slightly when the lights are turned on.

[cali yaris]

Well, I actually like it when idling you can't even tell if the engine is on or off

Tooter, a horse would be too loud for you.

[tooter]

Originally Posted by cali yaris

Tooter, a horse would be too loud for you.

Your excellent exhaust sure isn't, Garm.
Inside the car, it's virtually silent at idle.
Stepping on the gas is another story...