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jerry12345
January 15th, 2008, 01:06 PM
Due to stupidity I purchased a JDM 7MGE engine. Want to re-do the timing belt. I cannot get the crank pulleyto break loose. The engine is out of the car. I just want to verify that there is no possiblity that a JDM engine would have left handed threads on the crank bolt. So far I have tried a breaker bar and a 1/2 inch air impact operating at 110 lbs. I have remove several of these from US engines with nowhere near the problems I have now.
Thanks in advance

GrimJack
January 15th, 2008, 01:14 PM
Funny you should mention stupidity, because you posted this in the wrong section.

Thread moved.

The threads are normal on all 7M engines. The torque is 195 ft/lbs IIRC, so keep going.

shaeff
January 15th, 2008, 02:24 PM
the rattle gun has never let me down. ever.

BlackMKIII
January 15th, 2008, 02:31 PM
Get yourself a big fat impact gun and just go nuts on it with a good socket. It WILL come off, eventually.

BlackDynamite
January 15th, 2008, 02:45 PM
i thought it was 215 ft/lbs...whoops...Well i took mine off in the car and had to use a 4 foot cheater bar made of iron...lol...i was turning the engine, so i had a friend get under the car and wedge a screwdriver in the flex plate and the side of the engine.

amichie
January 15th, 2008, 07:38 PM
What you need is a big tool.

I made this out of a piece of stainless.

http://i67.photobucket.com/albums/h318/amichie/Bodgy-crank-tool.jpg

sbenson619
January 15th, 2008, 09:52 PM
I used a tool called a Crank stopper from matco tools. one of the master techs at my shop said it always works if the impact wont break it loose. that and a 2ft long breaker bar and a pipe broke it loose.

BlindRonin
January 15th, 2008, 09:52 PM
If your talking about breaking the pully bolt loose you need to get a harder hitting impact. Grim is absolutely right 110 wont even budge that. We have a huge 500lbs impact Cannon we use when removing pully bolt, and strut mounts. Of course I cut it down to around 250.

cuel
January 15th, 2008, 10:40 PM
110 psi. on the hose = 1000 ft. lbs. tq.(reverse) on my 1/2" impact gun. That pulley bolt comes loose pretty quick ;)

With the motor out, drop the oil pan, and wedge the crank. Then get on it with a breaker bar and cheater pipe.

AW11inVa
January 17th, 2008, 07:50 AM
Is the pulley that comes on the JDM engines the same as the one on the supra. My supra pulley is pretty rusty and the one on the JDM I have is nice and clean I would rather use that if I can.

AJ'S 88NA
January 17th, 2008, 08:06 AM
Should be the same, check the size and weight.

Nalleywhacker
January 17th, 2008, 10:27 AM
yeah no impact at our shop would touch my crank bolt it was hold the flywheel and get the breaker bar and a 2ft cheater bar and my full body weight to break it loose. (btw i weigh 300lbs!)

shaeff
January 17th, 2008, 03:41 PM
^ then you have weak impact guns. if you broke it with a breaker bar and 2ft cheater bar, you have weak impact guns. :)

BlindRonin
January 17th, 2008, 04:18 PM
Always oil Your impacts ppl no joke! They will firm up and hit harder after you re oil them even if its been a REALLY long time. My Ingersol was so weak till I oiled it then it felt twice as strong.

BlackMKIII
January 17th, 2008, 04:37 PM
yeah no impact at our shop would touch my crank bolt it was hold the flywheel and get the breaker bar and a 2ft cheater bar and my full body weight to break it loose. (btw i weigh 300lbs!)

So you're saying it took 600 ft/lbs? That's quite a bit, actually.

AW11inVa
January 17th, 2008, 06:12 PM
The dead block that I pulled out of my supra has a crank bolt that will not budge. I have hit it with impact wrench, breaker bar, breaker bar w/ pipe. Nothing. I am going to have to haul it to my dads workplace and have him hit it with one of thier 3/4" air guns.

Kckazdude
January 17th, 2008, 07:49 PM
My IR 231 has broken lose every crank bolt I have ever thrown at it.

Nalleywhacker
January 17th, 2008, 08:49 PM
So you're saying it took 600 ft/lbs? That's quite a bit, actually.

basically yeah thats what iam saying. i couldnt beleive it was so hard to get off!

AW11inVa
January 21st, 2008, 07:39 PM
I went to Lowes and bought some flat bar and made 2 holes for the 12mm bolts and screwed it to the JDM crank pulley and I had made a bigger hole for my socket. I rested the far end on a piece of steel and with the engine secured to the skid I hung from the rafters on my car port stood on my big Snap On ratchet. I had to hop up and down on it but it finally broke free. YAY!!

http://i29.photobucket.com/albums/c298/msjohndrow/supra/DSCF6685.jpg

shaeff
January 21st, 2008, 07:57 PM
nice. :) (please note that the JDM pulleys are the same as USDM.;))

AW11inVa
January 21st, 2008, 08:07 PM
Cool I was not sure. Can you use the crank pulley bolt over again? I was planning putting in new front main seal, timing belt, head gasket cam seals blah blah blah...

shaeff
January 21st, 2008, 08:09 PM
sure can. :)

Dr Chill
February 12th, 2008, 11:14 AM
I was in the junkyard pulling a balancer off a 7m & did not have the proper tools .. I had a breaker bar & a 5 foot pry bar .. you may think this is crazy ,But it worked I put the breaker bar on the balancer /pulley bolt and whacked the shit out of the breaker bar ... I figurd since it was'nt my car it did'nt hurt any to try ...the funny thing is that it actually worked
Ghetto tech in effect