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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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02-12-2017, 10:53 PM | #29 | |
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For now, @why? , I'll just challenge the statement which is bolded above. Are you saying that a boxer engine is more "balanced" than an in-line six ....?? humfrz |
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02-12-2017, 10:57 PM | #30 |
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THANK YOU!
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02-12-2017, 11:18 PM | #31 | |
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On some engines the pulley plays a crucial role in balancing the whole thing. On this engine it really is internally balanced, and the pulley itself is balanced (OK, I haven't verified this one, but the engineers say the engine is balanced internally, so I'm pretty sure it's like my previous car, which I did test... that pulley had the same rubber insert and people ran lightweight undamped underdrive pulleys hundreds of thousands of miles no problem...) So the only thing it can do is change how the crankshaft etc. sees harmonic resonance... Which it dampens. No balancing involved. Pedantic, but if you're arguing its importance when we haven't seen clear failures as a result of pulleys,... I have no clue if it's good or bad. But I do know it's not balancing anything. I also haven't installed a lightweight pulley, though I have one somewhere... C |
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02-13-2017, 12:28 AM | #32 | |
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Heck, I don't know if a dampened type pulley is necessary on this engine or not. All I know is that my car has one ...... and it ain't broke ...... so, I'm not going to "fix" it ...... humfrz |
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02-13-2017, 01:37 AM | #33 |
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If the damper wasn't deemed necessary the OEM wouldn't have specified it. A stamped steel pulley is much cheaper to manufacture.
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02-13-2017, 01:45 AM | #34 |
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*sigh* Here we go again.
There's only one answer for this issue:
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02-13-2017, 01:51 AM | #35 |
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I refute that statement as a valid argument. Are you suggesting that everything on this car is "necessary". If I remove the radio is the car going to blow up? It would have been cheaper to omit the radio.
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02-13-2017, 01:57 AM | #36 |
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If you were serious you would've used a better example than the radio.
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02-13-2017, 01:59 AM | #37 | |
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humfrz |
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02-13-2017, 02:09 AM | #38 |
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I don't think one in pic is still virgin girl
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02-13-2017, 02:46 AM | #39 |
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02-13-2017, 02:48 AM | #40 |
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That's it. I'm emailing Subaru.
Done. If/when they reply I will post here and I will forward their email to those who want it.
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Last edited by Captain Snooze; 02-13-2017 at 03:03 AM. |
02-13-2017, 02:50 AM | #41 |
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OK, time for lights out.
Pa-pa and Ma-ma are on a new schedule starting tomorrow. Daughter started a new job and has a longer commute. Granddaughters will be arriving at 0715. Nite all ........... ZZZZZZZZZZ |
02-13-2017, 03:17 AM | #42 |
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I am not disputing that article. I do not have the expertise to do so but.....
I am wary all the same. They (Fluidampr) are trying to sell their product. I look at their graph and say to myself "Holy shit! Just look at the difference their damper makes!" That is the intention. I am not suggesting what they are saying is incorrect but.. So what if the "vibration angle" goes from .225 to .05? Let me state I DO NOT KNOW ok? But sure it looks good in their sale pitch but why is it significant? Crankshafts oscillate and providing there is no nasty resonance I don't understand the issue. I've read another part of their article: "Crankshaft driven timing components and oil pump drives can be more susceptible to these high frequency vibrations." My bold. That looks like marketing speak to me. They don't say "it does" they say "can be". As in might be, possibly, maybe. Two other points: 1/ There has been no controlled testing of the effect of fitting a solid cp on the FA20 as far as I know and it would not be economically viable to do so. 2/ There doesn't seem to be a high correlation of engine failure with having fitted a lwcp.
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Last edited by Captain Snooze; 02-13-2017 at 03:31 AM. |
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