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Front Subframe lowering technique for transmission removal?

#1 User is offline   jhf2005 

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Posted 12 September 2011 - 10:48 PM

The bolts holding the subframe to the frame will not loosen. I have tried air gun, breaker bar, and socket wrenches. Here is a pic of the instructions. The second picture is of my actual car and bolts..

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the left bottom bolt is the bolt that will not budge..

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#2 User is offline   funkemonke 

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Posted 12 September 2011 - 10:57 PM

support around the area of the bolt, use your impactool (air gun) without extension, and use penetrating oil.

gl its a big task
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#3 User is offline   Boofster 

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Posted 13 September 2011 - 03:01 PM

Use a 1/2" socket with ratchet attached to a breaker bar. Looks like you're in rusty land so gl.
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#4 User is offline   03Mongoose 

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Posted 13 September 2011 - 04:22 PM

I just did mine, used a 4' piece of pipe as a breaker bar and it loosened up easily. My impact wrench didn't budge them even when running at a full 150 psi. If you think these are tough, wait until you get to the top transmission bolt. That one about broke me.

Bill

#5 User is offline   Boofster 

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Posted 19 September 2011 - 03:09 AM

^ For top transmission bolt, use 1/2" extensions with your 1/2" drive + breaker bar and won't be a problem.
It's ok to keep the reducer at the end or even an universal joint.
The issue is always too much twist in the smaller extensions.

#6 User is offline   igorien2k 

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Posted 03 October 2014 - 09:56 AM

So there are 3 bolts holding the subframe on each side. Two of them are quite long, and the middle one is shorter. Did you remove the middle one alltogether? I backed the middle one out about 2 inches- still not enough clearance. I don't have a tall enough jack to support the subframe, so I'm afraid of taking the bolt out and having the whole thing drop on me.

#7 User is offline   cdelena 

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Posted 03 October 2014 - 11:17 AM

The steady torque application of a large bar is not the best way to loosen a long fastener... a more powerful impact gun is ideal. I have found on a really tough large bolt I can up the air pressure from my normal at about 80 to 150 a difficult bolt can be removed without damage.

#8 User is online   Slowcrash_101 

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Posted 03 October 2014 - 11:37 PM

I hope you're not trying to remove that bolt with anything less than a 1/2" drive.

#9 User is offline   merkis1024 

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Posted 04 October 2014 - 12:41 AM

penetrating oil will definitely help. It did for me.
I also couldn't get it out with a 200 lb ft impact. returned the impact and bought a 350 lb ft milaukee and it did a little better. still returned it because i wanted to pick up a 800 lbft ingersol. lol
What worked even better is a breaker bar with a 4 foot extension. I used the metal bar used on my hydraulic jack and inserted it into my breaker bar. It came off quite easily.
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2005 AP2 Silverstone

#10 User is offline   Ryuu 

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Posted 04 October 2014 - 12:44 AM

View Postigorien2k, on 03 October 2014 - 09:56 AM, said:

So there are 3 bolts holding the subframe on each side. Two of them are quite long, and the middle one is shorter. Did you remove the middle one alltogether? I backed the middle one out about 2 inches- still not enough clearance. I don't have a tall enough jack to support the subframe, so I'm afraid of taking the bolt out and having the whole thing drop on me.






if there is a harbor freight store near, an you can, go grab a jack that'll reach the sub-frame.. I figure if your going to do the work, get the tools.. cause you'll use them over and over...

remove the middle two bolts completely, seriously, no worries.. the 4 corner bolts are long enough to be lowered the 3 inch drop they claim easy... and measure, don't be " about "
01' chassis - 04 2.2L 204,312miles of smiles.. My S2000 Journey


Silverstone/Silver/Black
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