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#1 |
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
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My car revs quick, but i don't know how much quicker than any other LT5... When I start off with very little throttle, maybe too little sometimes, there is a rattle for the tranny/engine area?
Can anyone describe the noise that is associated with the single mass FW? Thanks!
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1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car! |
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#2 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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The FW makes no noise. The noise is from the Trans which is a bit like rocks in a can. The Dual Mass absorbs the engine vibration.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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#3 |
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
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Yeah, thats what i was thinking, i think i have a Single Mass in mine.
Thanks
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1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car! |
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#4 |
![]() Join Date: Oct 2013
Location: Wichita Falls,Tx
Posts: 604
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Under those conditions,a ZR-1 with dual mass flywheel will make the same noises.
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Clint & Sherry 1994 ZR-1 White/Red #152 (sold) 1991 ZR-1 Callaway Aerobody #1332 (sold) 1990 ZR-1 Red/Red #952 (sold) 2002 Z06 Torch Red/Mod Red widebody |
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#5 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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My Fidanza will cause a tranny rattle at idle, in neutral and clutch disengaged. Otherwise, it doesn't rattle. And the amount of rattle depends usually on how hot the trans oil is.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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#6 | |
![]() Join Date: Jun 2005
Location: CenCoast California
Posts: 899
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![]() Quote:
The dual mass wheel damps gear rattle from the transmission. At idle and low rpm the engine speed fluctuation caused by four firing impulses per revolution (engine speed increases as the engine accelerates during a power stroke then decreases as the engine slows down on a compression stroke) causes the teeth of the gears on the transmission main shaft to vibrate or rattle in the teeth of the gears on the countershaft The dual mass wheel, partially damps the effect of this speed fluctuation by setting up a secondary fluctuation out of phase with the primary. The result is a reduction in gear rattle.
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Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878 |
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#7 |
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
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Mine is loud... I'm a little embarrassed when pulling out of the local meet...
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1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car! |
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#8 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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Is this in neutral? Clutch disengaged? Accelerating?
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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#9 |
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
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No noise in Neutral, maybe a little throwout bearing noise.... No noise acceleration except from a dead stop with light throttle. Not nearly so light a throttle that the car bucks or anything like that just a normal light throttle take off.
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1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car! |
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#10 |
Join Date: May 2007
Location: Chicagoland, IL
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Mine only rattles in Neutral w clutch engaged. The noise level is also dependent on how hot trans oil is, as in after a long run on a hot day. Again, playing w the tune evens out the engine pulse helping to minimize the rattling. Same as what happened with the ZF-6 in my 84 Xfire.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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