Lightweight pulley wow

[djdnz]

Given the assembly procedure, I'd be more inclined to think they are balanced on their own. It's easy to balance the rotating assembly off the engine, I find it hard to believe that they would go to the trouble after the engine was assembled. When they build the engine, the crank would be installed, engine put together, then the pulley installed afterwards. I may be wrong, never having built an engine before, and not seeing how it comes apart, but it's my feeling looking at the images posted that the crank pulley would likely be installed as one of the later components.

With that said, I'd still leave mine stock. I've been through these mods before on my current car, and in my mind it's not worth it for the little things like this. Custom parts makes for custom problems, so I tend to stick to the bigger change items. But everyone is entitled to their own opinion on the matter so I'm sure it will still sell well.

[20valvewynn83]

Originally Posted by dwx

H4/H6 Subaru engines do not use balance shafts. The whole car minus the transmission and rear diff is Subaru.

This is kind of true and not at the same time. Toyota desined a lot of the parts but Subaru made them. If you want to get technical the engine that's is used has a lot less HP but Toyota designed new internals and the fuel system to boost the HP to 200. Yes this car was build by Subaru factories but people cant say its all Subaru.

some more info for you!!

Nissan had acquired a 20% stake in 1968 during a period of government-ordered merging of the Japanese auto industry in order to improve competitiveness under the administration of Prime Minister Eisaku Sato. Nissan would utilize FHI's bus manufacturing capability and expertise for their Nissan Diesel line of buses. In turn, many Subaru vehicles, even today, use parts from the Nissan manufacturing keiretsu. The Subaru automatic transmission, known as the 4EAT, is also used in the first generation Nissan Pathfinder. Speculation has suggested that it was Subaru that introduced Renault to Nissan, when Renault asked for assistance in all-wheel drive (AWD) technology, and when FHI told Renault to discuss their plans with Nissan, the discussions may have been a contributing factor to the currently successful Renault-Nissan alliance.
Upon Nissan's acquisition by Renault, its 20% stake was sold to General Motors in 1999. Troy Clarke, of General Motors served as representative to Fuji Heavy Industries on their corporate board. During that time, the Subaru Forester was sold as a Chevrolet Forester in India in exchange for the Opel Zafira being sold as a Subaru Traviq in Japan. Also, the Chevrolet Borrego concept was presented in 2002, a crossover coupe/pickup truck being derived from the Japanese-market Legacy Turbo platform. During the brief General Motors period, a "badge engineered" Impreza was sold in the United States as the Saab 9-2X. An SUV (Subaru Tribeca / SAAB 9-6X) was also planned[5][6] but the SAAB version did not proceed, and styling was recycled in the 2008 Tribeca refresh.[7]
On October 5, 2005 Toyota Motor Corporation purchased 8.7% of FHI shares from General Motors who had owned 20.1% of FHI[8] since 1999. GM later divested its remaining 11.4% stake, selling its shares on the open market to sever all ties with FHI. FHI previously stated that there might have been 27 million shares (3.4%) acquired before the start of trading by an unknown party on October 6, 2005, and speculation suggested that a bank or perhaps another automaker was involved. After the purchase, Toyota announced a contract with Subaru on March 13, 2006 to use the underutilized Subaru manufacturing facility in Lafayette, Indiana, and Toyota announced plans to hire up to 1,000 workers and set aside an assembly line for the Camry model, beginning in the second quarter of 2007.


I can make it simple for you Toyota Owns Subaru!!!

[Tainen]

Originally Posted by 20valvewynn83

I can make it simple for you Toyota Owns Subaru!!!

Sorry, no. Toyota owns 16% of Subaru, as per their investor relations website.

[SkAsphalt]

Making them the largest independent owner of Subaru

Which does not make them own Subaru, just the most influential independent owner

Originally Posted by Tainen

Sorry, no. Toyota owns 16% of Subaru, as per their investor relations website.

[kendalldwhite]

just received

[karma003]

Originally Posted by TSLRich

My guess.. the drill marks in the stock pulley are so that it is balanced on its own... but that doesn't mean that is provides any harmonic balancing to the motor.. once it is installed.

I haven't kept reading to see if anyone else has answered but the drill marks r actually for a special tool that the dealerships or just machanics use to take it off smoothly. There's a Benz badge looking thing that goes to each hole, bolts r bolted down on it, then there's a center one that pushes down on the center & pulls it out smoothly from what I remember. Its been a long time since I've used one

[karma003]

Originally Posted by White64Goat

The one question that has still to be answered is: Is the stock pulley/balancer balanced on it's own or is it balanced as a complete rotating assembly. This isn't a 'I think it is' or 'probably' or 'the older engines did this or that' question. It's a black and white question. The holes drilled in the pulley/balancer are to balance the pulley or drilled to balance the whole assembly.

Then once you have the answer to that question, you have to ask that if you install an aftermarket pulley (any brand) that is a balanced pulley (on it's own) will it change the balance of the rotating assembly?

Does this make sense, or is my reasoning off base?

From my knowledge, I thought the motor was all already balanced? Considering that the crankshaft has the counterweights,

[Sportsguy83]

Originally Posted by karma003

I haven't kept reading to see if anyone else has answered but the drill marks r actually for a special tool that the dealerships or just machanics use to take it off smoothly. There's a Benz badge looking thing that goes to each hole, bolts r bolted down on it, then there's a center one that pushes down on the center & pulls it out smoothly from what I remember. Its been a long time since I've used one

We are not talking about those holes, the ones we are talking about are on the face of the pulley, and they have no thread for a bolt.

[SkullWorks]

Originally Posted by Don@Accelerated

Are the perrin units dampeners. It doesn't appear so?

I hope not, plus I don't see anywhere to store much water in the pulley so it wouldn't get very much wet anyway

on an unrelated not see difference between Damper and Dampener

just pushing buttons

[Sportsguy83]

Originally Posted by djdnz

I find it hard to believe that they would go to the trouble after the engine was assembled.

When you are building a motor, you take the components you want to balance to the shop and they are balanced together before being assembled inside the motor block. This is obviously, before the motor is assembled.

[karma003]

Originally Posted by Captain Snooze

Incorrect. It depends on the number of cylinders and configuration. Inline 4; unbalanced. Inline 6;balanced. As for vees it depends on on number of cylinders and vee angle.

I believe this is incorrect & the lad is right but made a typo when one is heading back ones heading out. Meaning that its using the law of physics what's in motion stays in motion. & for every action there's an equal & opposite reaction. So the force is never lost, but helps keep the motor keep moving more smoothly. As for v shaped & inline motors, the forces r thrown into a random counter in the motor & the pistion going up at the same moment is thrown off

[karma003]

Originally Posted by sportsguy83

We are not talking about those holes, the ones we are talking about are on the face of the pulley, and they have no thread for a bolt.

I used to be a technician at a Toyota dealer, I didn't do too many engine rebuilds due to the fact that Toyotas r pretty reliable, (& most were given to my buddy the master tech there.) But to my recollection, they weren't ment for any kind of balancing I don't think. I could have sworn they were for lining something up or another... I'm not gonna lie, I'm not really sure, I'm just throwing out what I & don't know for sure. & I don't ever remember being told they were for balancing purposes. If so, what would one do when they buy a new pulley? At most the company selling the pulley would have to balance the harmonic balancer, but what for? Either way it'd have nothing to do w the motor but w the pulley itself.

[mike2100]

Originally Posted by karma003

I used to be a technician at a Toyota dealer, I didn't do too many engine rebuilds due to the fact that Toyotas r pretty reliable, (& most were given to my buddy the master tech there.) But to my recollection, they weren't ment for any kind of balancing I don't think. I could have sworn they were for lining something up or another... I'm not gonna lie, I'm not really sure, I'm just throwing out what I & don't know for sure. & I don't ever remember being told they were for balancing purposes. If so, what would one do when they buy a new pulley? At most the company selling the pulley would have to balance the harmonic balancer, but what for? Either way it'd have nothing to do w the motor but w the pulley itself.

timing marks?

[karma003]

Originally Posted by mike2100

timing marks?

No, timing marks r usually little dimples made on the edge. I've never seen holes for timing. My guess would be they're used either for a tool or for holding the pulley still when bolting.in the bolt. Idk. Sorry.