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#1
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Crankshaft pulley
Come across a car where the crankshaft pulley has come apart at the seams! The grooved portion has been chewing its way through the timing belt housing.
Question - is there another Subaru that uses the same pulley before? And the replacement presumably needs the timing belt removing. Thanks guys Tony |
#2
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The crank pulley is an item to watch, so it can be caught before it grinds into the T-belt cover. SVX crank pulley is unique to SVX. Only the ac, ps belts have to come off to change it. T-belt can stay put. Covers for T-belt need to be replaced? It is most likely warped.
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May your transmission live forever. SuperbVehicleXtraordinary Proud sponsor of a 1992 SVX. |
#3
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we have
Quote:
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My mom will forever live in me and never be forgotten, one day Ill see her again CLICK the LINK below to Visit the SVX Store: http://www.planetsvx.com http://www.motorsportwarehouse.com/svx/sig2.jpg Cars in the garage: 92 Toyota Soarer Single Turbo JDM RHD 70 Boss 302 Mustang 39k original miles 97 SVX Lsi 92 Liquid Silver Murano-ized (1st of its kind) 71 Cougar Xr7 Conv 351c 4v 4spd 69 SS Camaro 350 71 Nissan RHD Fairlady Z 70 Stang Fastback 70 Amc AMX 390 71 240z 89 Conquest TSi w/ 5.0 v8 swap 84 Mustang GT Turbo conv "good, if it bleeds, we can kill it ....." |
#4
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With the under drive pulley the ac compressor and Alt will run at a higher rpm. Right?
Why is there a rubber ring in the standard pulley?
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May your transmission live forever. SuperbVehicleXtraordinary Proud sponsor of a 1992 SVX. |
#5
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The drive pully is driven off of the crank. If the pulley is smaller, as in an underdrive, then the accessories turn at a slower speed. That is why they are supposed to increase available HP by slowing down the accessories that siphon the HP from the crank.
I believe there is rubber in the original to absorb crankshaft vibration. Some folks refuse to use an underdrive for the very reason that it will not absorb those stresses and will theoretically shorten the life of the crankshaft. Others disagree that it would.
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Pearl '92 LS-L 179K (Historic 1st 5-speed SVX) Mods: 5-speed, 4.11's, Group-N motor mounts, dual Magnaflows, cone air filter, Kenwood MP-228 CD/Receiver, white-faced gauges, '97 grill, custom window tinting. Ebony Mica '92 LS 80K Oct 2002 - Dec 2004: Victim of theft. She served me well. You can tell the lack of craftsmanship by the wrinkles in the duct tape. |
#6
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Yes your are correct and I should have realized that. Small is slower.
I do remember reading a thread where the failure was thought to have been caused by the underdrive pulley.
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May your transmission live forever. SuperbVehicleXtraordinary Proud sponsor of a 1992 SVX. |
#7
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Depending on who you talk to, the rubber isolator in the crankshaft pulley is either there to absorb vibration or to compensate for crankshaft flex. Though I've never seen it proven, most of the other automotive sites I visit agree that one-piece crankshaft pulleys are bad news.
This is especially true in the 1st and 2nd gen. Mitsubishi Eclipse environment, where the 4g63 engine's crankwalk problem has been partially attributed to the use of one-piece underdrive pulleys. The theory is basically that the rubber isolator compensates for the crankshaft flex caused by the #1 cylinder firing. Replacing that pulley with a one-piece unit that cannot compensate for the flex causes additional strain and wear on that main / thrust bearing, eventually leading to a crankwalk condition. However, this is all somewhat anecdotal and I have no idea if it even vaguely applies to the EG33. John
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1996 Subaru SVX LSi - "Red Wolf" - In Storage 2001 Subaru Outback L.L. Bean Edition - "Angel" - Mom's 2006 Acura RSX - "Grey Wolf" - Current Daily Driver |
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