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Old 10-09-2012, 08:17 PM   #3326
Jdub.csu
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Quote:
Originally Posted by INKMAN
I prefer the put the car on a lift and use air tools method.
Dos haha helps when I have them readily available to me...

Also power air tools ftw
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Last edited by Jdub.csu; 10-09-2012 at 08:32 PM.
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Old 10-09-2012, 08:22 PM   #3327
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Quote:
Originally Posted by INKMAN
Air ratchet would probably work since all the hardware is new and not seized at this point. They take a lot of air to constantly work at full power so you need a decent size compressor. A 3/8 impact gun works perfect for that kind of stuff too. Not everyone obviously has this stuff but it makes a world of a difference if you do.
ye I have a big compressor :P. Annoys my mom and scares my sister. I wish I had access to a lift though...
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Old 10-09-2012, 09:34 PM   #3328
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Originally Posted by Navendra94 View Post
CRAP! Thanks for the info lmao. I'll switch the gaskets tomoro after I run a quick errand. Looks like the entire exhaust has to get adjusted. Shouls take 15 minutes to fix.

Thanks man, real life saver!
I don't know why it wouldn't work but there are definitely two sizes.

Quote:
Originally Posted by INKMAN View Post
I prefer the put the car on a lift and use air tools method.
Quote:
Originally Posted by Jdub.csu View Post
Dos haha helps when I have them readily available to me...

Also power air tools ftw
Quote:
Originally Posted by Navendra94 View Post
ye I have a big compressor :P. Annoys my mom and scares my sister. I wish I had access to a lift though...
My car has never been on a lift or had air tools used on it
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Old 10-09-2012, 09:46 PM   #3329
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Quote:
Originally Posted by xluben View Post
I don't know why it wouldn't work but there are definitely two sizes.




My car has never been on a lift or had air tools used on it


How many miles are on your car?
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Old 10-09-2012, 09:46 PM   #3330
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Consider me spoiled. Being a flat rate technician it's a way of life! And come on....it's never ever been on a lift? Not once? Just for a little ride?
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Old 10-09-2012, 09:52 PM   #3331
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Quote:
Originally Posted by Jdub.csu View Post


How many miles are on your car?
Around 29k.

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Originally Posted by INKMAN View Post
Consider me spoiled. Being a flat rate technician it's a way of life! And come on....it's never ever been on a lift? Not once? Just for a little ride?
I was thinking real hard and it actually has been on a lift at least once that I can remember. It was for a tech inspection before a track day. Lol.

I'm pretty sure 100% of the work has been done on stand in my garage, with hand tools. If I was a mechanic by ready I don't think I'd want to work on my car this much. Lol.
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Old 10-09-2012, 10:25 PM   #3332
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Quote:
Originally Posted by xluben
Around 29k.

I was thinking real hard and it actually has been on a lift at least once that I can remember. It was for a tech inspection before a track day. Lol.

I'm pretty sure 100% of the work has been done on stand in my garage, with hand tools. If I was a mechanic by ready I don't think I'd want to work on my car this much. Lol.
Trust me sometimes it's the last thing I want to do and sometimes I wonder why I don't leave it stock lol but then I remember =D

So are you going to do all the 30K fluids yourself?
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Old 10-09-2012, 10:26 PM   #3333
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What fluids am I due for?
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Old 10-09-2012, 10:33 PM   #3334
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Quote:
Originally Posted by xluben View Post
Around 29k.


I was thinking real hard and it actually has been on a lift at least once that I can remember. It was for a tech inspection before a track day. Lol.

I'm pretty sure 100% of the work has been done on stand in my garage, with hand tools. If I was a mechanic by ready I don't think I'd want to work on my car this much. Lol.
You don't know how true that statement is sometimes. After working on cars all day I don't want to work on mine. After working for Honda for 6 years I can honestly say I would never , ever, work on Subaru as a career.

Changing spark plugs is one of the most annoying things on the planet.
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Old 10-10-2012, 09:47 AM   #3335
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Fixed gasket rattle. Only rattle left is the occasional rattle in low rpms due to vibration making mid pipe tap some metal under car.

It doesn't annoy me that much but I'll have to do that on weekend. Nothing a little fiddling around with the hangers couldn't fix eh?
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Old 10-10-2012, 10:29 AM   #3336
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You don't know how true that statement is sometimes. After working on cars all day I don't want to work on mine. After working for Honda for 6 years I can honestly say I would never , ever, work on Subaru as a career.

Changing spark plugs is one of the most annoying things on the planet.
Yes, it is quite a pain compared to a Honda!

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Originally Posted by Navendra94 View Post
Fixed gasket rattle. Only rattle left is the occasional rattle in low rpms due to vibration making mid pipe tap some metal under car.

It doesn't annoy me that much but I'll have to do that on weekend. Nothing a little fiddling around with the hangers couldn't fix eh?
That is odd, but it's probably minor.
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Old 10-10-2012, 10:29 AM   #3337
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Quote:
Originally Posted by Navendra94 View Post
Fixed gasket rattle. Only rattle left is the occasional rattle in low rpms due to vibration making mid pipe tap some metal under car.

It doesn't annoy me that much but I'll have to do that on weekend. Nothing a little fiddling around with the hangers couldn't fix eh?
That or XL hangers or bending the heat sheild
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Old 10-10-2012, 10:42 AM   #3338
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I hate long hangers. IMO they should not be necessary.
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Old 10-10-2012, 10:45 AM   #3339
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Quote:
Originally Posted by Jdub.csu

That or XL hangers or bending the heat sheild

Yea looks like the heatshield needs a bend...
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Old 10-10-2012, 10:47 AM   #3340
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Quote:
Originally Posted by xluben
I hate long hangers. IMO they should not be necessary.
I agree I just made a divit on my heat shield when I had the q300. It would only vibrate when running hard or cold start.
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Old 10-10-2012, 10:55 AM   #3341
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Quote:
Originally Posted by Navendra94

Yea looks like the heatshield needs a bend...
I ended up removing my heat shield and going with XL hangers on my '11 sedan. The midpipe was thrashing the driver side carrier bearing bolt. I put a big dab of permatex on the bolt while awaiting the hangers. All is well now though.
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Old 10-10-2012, 11:01 AM   #3342
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I'm going to go Bend the heatshield in soon since the sun's out. Any suggestions? Screwdriver? Hammer?
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Old 10-10-2012, 11:17 AM   #3343
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Quote:
Originally Posted by Navendra94
I'm going to go Bend the heatshield in soon since the sun's out. Any suggestions? Screwdriver? Hammer?
It doesn't take much to bend. Screwdriver + your hand is enough
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Old 10-10-2012, 11:20 AM   #3344
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Yeah, I think I bent mine by hand for one of my exhausts. Probably why I didn't have any issues with the Greddy (already was bent).
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Old 10-10-2012, 11:34 AM   #3345
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I'm guessing it will help transfer more power to the ground, and take some strain off everything else that get pulled out of position when the motor/tranny moves that much. I'm sure the stock mounts would have totally failed eventually anyways.
What I'm wondering is where does all that force go? I mean, from the looks of the engine jiggles as a result of the inertial force generated by the the sudden drop in power. If this is the case, then I would say that the force is already making its way out of the engine and into your mounts. Stiffening up the mounts would only result in more load transfer into whatever the mounts are connected to. The real question then becomes, what is the new weak link and can that new weak link take the additional force being added to it?

Same logic would apply to things like installing new sway bars and end links...
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Old 10-10-2012, 11:43 AM   #3346
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What I'm wondering is where does all that force go? I mean, from the looks of the engine jiggles as a result of the inertial force generated by the the sudden drop in power. If this is the case, then I would say that the force is already making its way out of the engine and into your mounts. Stiffening up the mounts would only result in more load transfer into whatever the mounts are connected to. The real question then becomes, what is the new weak link and can that new weak link take the additional force being added to it?

Same logic would apply to things like installing new sway bars and end links...
I think a simple way to think about it is to consider Newton's 3rd law, every force has an equal and opposite force acting against it. If the mounts are soft and squishy, then this could ultimately be the limiting factor in the power output (or at least reduce the efficiency of putting it to the wheels). The same is the case with adding stiffness in other areas.

When you see the motor bounce all over when the throttle is lifted, you can think about the opposite happening (although over a longer time scale) when power is applied. You should be able to see how this is inefficient. Holding the motor firmly in place, you reduce the energy that is wasted by moving the motor around, and allow this energy to be transferred to the wheels instead.

Yes, it does put the strain on other components, and probably could lead to earlier failures in some cases. But usually the subframe mounting points are more than strong enough and mushy factory parts are merely for NVH concerns.
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Old 10-10-2012, 11:54 AM   #3347
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Originally Posted by xluben View Post
I think a simple way to think about it is to consider Newton's 3rd law, every force has an equal and opposite force acting against it. If the mounts are soft and squishy, then this could ultimately be the limiting factor in the power output (or at least reduce the efficiency of putting it to the wheels). The same is the case with adding stiffness in other areas.

When you see the motor bounce all over when the throttle is lifted, you can think about the opposite happening (although over a longer time scale) when power is applied. You should be able to see how this is inefficient. Holding the motor firmly in place, you reduce the energy that is wasted by moving the motor around, and allow this energy to be transferred to the wheels instead.

Yes, it does put the strain on other components, and probably could lead to earlier failures in some cases. But usually the subframe mounting points are more than strong enough and mushy factory parts are merely for NVH concerns.
I think I see what you're saying. It's kind of like if you were to compare energy transfer between swinging a ball attached to a rubber band vs. a ball attached to a rigid shaft. Energy transfer is more efficient through the rigid shaft since its stiffness is higher. Assuming your subframe mounting points can take the extra force, seems like you could make more power. Are you going to go to a dyno? hahaha

Last edited by jhmr; 10-10-2012 at 12:01 PM.
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Old 10-10-2012, 11:56 AM   #3348
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Yes, that's a good analogy too. I don't plan on doing a dyno. I've changed a few other things too, so it wouldn't be apples to apples. The other big change with mounts is getting rid of the slop (ie. during hard shifting). You can obviously see this in the dyno video, but you wouldn't see it in dyno results.
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Old 10-10-2012, 12:58 PM   #3349
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Quote:
Originally Posted by xluben
Yes, that's a good analogy too. I don't plan on doing a dyno. I've changed a few other things too, so it wouldn't be apples to apples. The other big change with mounts is getting rid of the slop (ie. during hard shifting). You can obviously see this in the dyno video, but you wouldn't see it in dyno results.
I think slop during hard shifting kills things more than adding harder mounts will over time
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Old 10-10-2012, 02:42 PM   #3350
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I'm very interested to see how much noise those mounts cause. I wouldn't mind stiffening up things myself if the noise is tolerable.
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