Rotated mount installation M35 LSJ/LNF - Page 3 - Cobalt SS Network

Go Back  Cobalt SS Network > Specific Technical Discussion > Drivetrain
Rotated mount installation M35 LSJ/LNF >

Rotated mount installation M35 LSJ/LNF

Drivetrain Transmission, LSD, Clutch, Driveline, Axles...

Rotated mount installation M35 LSJ/LNF

Old 11-29-2012, 02:21 PM
  #51  
Banned
iTrader: (5)
 
Join Date: 06-12-10
Location: Augusta GA
Posts: 4,040
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by Sox-Fan View Post
This thread needs to get cleaned up and moved to the how-to section.
this I agree with, not sure why its not in how-to to start with.
Vander Nars is offline  
Old 11-29-2012, 02:30 PM
  #52  
Senior Member
Platinum Member
iTrader: (14)
 
EXsoccer1921's Avatar
 
Join Date: 05-04-08
Location: The 405
Posts: 37,072
Thanks: 0
Thanked 2 Times in 2 Posts
cause there already is one. i do like johns pictures though. i should have taken more.
EXsoccer1921 is offline  
Old 11-29-2012, 02:33 PM
  #53  
Got Brakes?
Platinum Member
iTrader: (7)
 
Sox-Fan's Avatar
 
Join Date: 12-23-09
Location: Mt. Pleasant S.C.
Posts: 12,762
Thanked 2 Times in 2 Posts
Steal them for yours, lol.
Sox-Fan is offline  
Old 11-29-2012, 02:34 PM
  #54  
Senior Member
Platinum Member
iTrader: (14)
 
EXsoccer1921's Avatar
 
Join Date: 05-04-08
Location: The 405
Posts: 37,072
Thanks: 0
Thanked 2 Times in 2 Posts
i stuck this one so it'll be at the top of the drivetrain page. and it actually pulls up more often from searching than mine comes up.

added a link to it at the top of mine as well
EXsoccer1921 is offline  
Old 11-29-2012, 02:39 PM
  #55  
Senior Member
Platinum Member
iTrader: (14)
 
EXsoccer1921's Avatar
 
Join Date: 05-04-08
Location: The 405
Posts: 37,072
Thanks: 0
Thanked 2 Times in 2 Posts
Originally Posted by Sox-Fan View Post
Steal them for yours, lol.
i'm not in to the whole stealing thing..
EXsoccer1921 is offline  
Old 02-14-2013, 04:43 PM
  #56  
New Member
 
Join Date: 04-12-07
Location: MICH
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
I installed the LNF mounts on my 07 LSJ, and I have vibrations. I did not support the engine from the bottom when I removed the old mounts, so I know things shifted. I jacked up the trans to get the new mounts to line up with the cross bolts. If the engine/trans shifted side to side, how do I move it back and get everything lined up right? I now have 4 jack stands so I can support it in 4 corners to keep the car level.
freeman is offline  
Old 02-14-2013, 06:10 PM
  #57  
Supporting Vendor
Thread Starter
iTrader: (3)
 
Join Date: 04-25-11
Location: Port Perry
Posts: 6,199
Thanked 37 Times in 26 Posts
start the process again. support the motor; loosen the top mounts. relax the rear and then the front mount. remove one bolt from the passenger side top mount and look at its relative position, that will tell the story. Go to the first page of this thread, second last photo, will show you the correct positioning of that mount, which should tell the story. Understand this DOES NOT apply to LNF replacement mounts front and rear, ONLY Powell rotated mounts.

good luck.
Powell Race Parts is offline  
Old 02-17-2013, 09:18 PM
  #58  
New Member
 
Join Date: 04-12-07
Location: MICH
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
When I loosen the bolts on the top engine mount, I loosened the center bolt long enough to see its orientation. It is angled facing the right. Should it be perpendicular to to the plate with the oversized holes? Does this indicate how the motor/trans is out of balance and which direction I need to correct? I tried redoing it yesterday, and I also loosened the transmission side upper mount. I supported the bottom with a jack, but was not sure if I should jack up the trans until there is no weight on the mount or just enough to support the trans?
freeman is offline  
Old 02-17-2013, 09:33 PM
  #59  
Supporting Vendor
Thread Starter
iTrader: (3)
 
Join Date: 04-25-11
Location: Port Perry
Posts: 6,199
Thanked 37 Times in 26 Posts
Originally Posted by freeman View Post
When I loosen the bolts on the top engine mount, I loosened the center bolt long enough to see its orientation. It is angled facing the right. Should it be perpendicular to to the plate with the oversized holes? Does this indicate how the motor/trans is out of balance and which direction I need to correct? I tried redoing it yesterday, and I also loosened the transmission side upper mount. I supported the bottom with a jack, but was not sure if I should jack up the trans until there is no weight on the mount or just enough to support the trans?
go to picture 9 on the first post. Thats what it should look like. It is entirely possible, as the drivers side upper mount has no capability of resisting fender side to fender side movement for the engine trans unit to slide towards the passenger side.

support the trans/engine with a jack and a piece of wood, doing your best to balance it equally by placing the jack and wood under the trans by the engine pan slightly rearward.
Then loosen the top bolts and the lower mount cross bolts, and use a prybar to move the motor back by levering between the passenger side rail and the engine. Dont pry on the tensioners, or the pullies or the alternator etc.

read the how to again?

hope this helps
Powell Race Parts is offline  
Old 03-03-2013, 10:21 PM
  #60  
Senior Member
iTrader: (11)
 
Join Date: 03-16-08
Location: Altus AFB, Ok
Posts: 3,534
Thanks: 0
Thanked 1 Time in 1 Post
question... can you use the ttr engine mount with these? or is the stock mount the better option? right now i have the ttr installed, but i have an extra stock mount i can put back on.
06cobalt racer is offline  
Old 03-03-2013, 10:39 PM
  #61  
Supporting Vendor
Thread Starter
iTrader: (3)
 
Join Date: 04-25-11
Location: Port Perry
Posts: 6,199
Thanked 37 Times in 26 Posts
its best to use the stock mount as it has extra large holes that permit rotation. If you use a non stock mount you are best to machine the engine mounting block for the mount. that requires some careful dimensional changes, so we just make a new block and it is not cheap to make. stock mount is best. any other mount will increase vibration and may eventually cause some damage to the other mounts .
Powell Race Parts is offline  
Old 03-03-2013, 10:59 PM
  #62  
Senior Member
iTrader: (11)
 
Join Date: 03-16-08
Location: Altus AFB, Ok
Posts: 3,534
Thanks: 0
Thanked 1 Time in 1 Post
ok cool thanks. stock mount it is!
06cobalt racer is offline  
Old 05-09-2013, 11:24 AM
  #63  
Premium Member
iTrader: (1)
 
SS89's Avatar
 
Join Date: 09-13-12
Location: Canada, Quebec, Montreal
Posts: 310
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by Powell Race Parts View Post
NOTE: there are four mounts on any delta. The front and rear ones are quite firm, rubber inserts with voids.

the top mounts, are actually referred to as “torque axis” mounts. The passenger one is quite firm the drivers side is very soft. Very soft.

so when on jack stands, its possible for the motor to slide over to the soft side and compress the new front mount to one side.
Is there a way to avoid this? Can I put a second jack under the engine for support? I'm going to order the rotated mount soon and going to do the install myself but I don't want to screw up everything. Also, would you recommend the mount with coilovers?
SS89 is offline  
Old 05-09-2013, 07:27 PM
  #64  
Supporting Vendor
Thread Starter
iTrader: (3)
 
Join Date: 04-25-11
Location: Port Perry
Posts: 6,199
Thanked 37 Times in 26 Posts
Originally Posted by SS89 View Post
Is there a way to avoid this? Can I put a second jack under the engine for support? I'm going to order the rotated mount soon and going to do the install myself but I don't want to screw up everything. Also, would you recommend the mount with coilovers?
I prefer the car to be on four jack stands to avoid this issue. Regardless of coil overs dropped up down or inside out, rotated mounts on the manual shift delta platform cars really helps fix power hop.
Powell Race Parts is offline  
Old 05-09-2013, 08:04 PM
  #65  
Senior Member
 
chris88z24's Avatar
 
Join Date: 06-03-07
Location: In the garage patching rust holes
Posts: 13,799
Thanks: 0
Thanked 22 Times in 20 Posts
I did it on 2 stands but had a jack under the oil pan the entire time to make sure the engine didn't move. I think I had to push the engine a bit up top with a prybar... can't remember, was too busy ripping out OTTP's garbage instead of remembering the exact steps. lol

The rotated mount w/ the LNF rear trans mount is da bomb diggity. Really helps the car put the power down without breaking things...
chris88z24 is offline  
Old 09-18-2013, 11:31 AM
  #66  
New Member
 
Join Date: 07-05-13
Location: Canada
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
I Installed my stage 1 John Powell Mount yesterday and I am getting a lot of vibes under 1000 RPM. If I accelerate at low rpm's or in reverse I feel the transmission shaking. We tried loosening all the bolts and tried rebalancing the motor and it seems to have helped but there are still a lot of vibes under 1000 rpm.

Is that normal or should I keep trying to rebalance the motor?
Kap_Kayaker is offline  
Old 09-18-2013, 06:58 PM
  #67  
Supporting Vendor
Thread Starter
iTrader: (3)
 
Join Date: 04-25-11
Location: Port Perry
Posts: 6,199
Thanked 37 Times in 26 Posts
impossible to tell. does it change a/c on/off? Hard not to be
worrying about the install or other things - exhaust contact with body etc.

These mounts are not stock and the NVH is different as the absorption capability is different with a smaller harder insert.
Powell Race Parts is offline  
Old 09-20-2013, 10:20 AM
  #68  
New Member
 
Join Date: 07-05-13
Location: Canada
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
It does make a difference with the a/c on... it makes it vibrates more. When I am driving I don't get any vibes. It is when I am idling that I get a lot more vibes then before. When I am baking up I get vibrations and when I release the clutch slowly at low Rpm that will make the car vibrate.

Would those thing be considered normal with the new mount?
Kap_Kayaker is offline  
Old 09-20-2013, 04:57 PM
  #69  
Supporting Vendor
Thread Starter
iTrader: (3)
 
Join Date: 04-25-11
Location: Port Perry
Posts: 6,199
Thanked 37 Times in 26 Posts
a/c on/off yes. Clutch release vibration? no clue. Check driver mod, install, clutch. clutch should only be released slowly to the point of take up at that moment on its a switch, and for all forward gears beyond first.
Powell Race Parts is offline  
Old 09-26-2013, 05:02 PM
  #70  
New Member
 
Join Date: 07-05-13
Location: Canada
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
My Mechanic friend recommended not to jack under the oil pan so we jacked the right side of the motor and I think that might have caused the motor to be slightly off balance. I will try loosening all the bolt again while putting the jack under the oil pan to rebalance everything.

Thanks for the help
Kap_Kayaker is offline  
Old 09-26-2013, 07:03 PM
  #71  
Senior Member
iTrader: (4)
 
Join Date: 05-26-09
Location: Calgary, Alberta
Posts: 13,455
Thanked 12 Times in 9 Posts
Originally Posted by Kap_Kayaker View Post
My Mechanic friend recommended not to jack under the oil pan so we jacked the right side of the motor and I think that might have caused the motor to be slightly off balance.



Umm, obviously jacking on an aluminum oil pan is a bad idea, but did you miss this?

Originally Posted by Powell Race Parts View Post
...
1. First job is to get the car properly secured , well up in the air and on jack stands. Then using a piece of wood to spread jacking load, gently support the engine at the transmission differential area.

Now go up top and release a couple/three turns the top passenger side mount bolts. (15 mm socket)
...
soundjunky is offline  
Old 09-30-2013, 10:31 AM
  #72  
New Member
 
Join Date: 07-05-13
Location: Canada
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Haha nope that is how we did it. But I was thinking maybe if I would of supported the passenger side a little more while all the bolts were loose I would be getting less vibrations.
Kap_Kayaker is offline  
Old 09-30-2013, 10:43 AM
  #73  
Supporting Vendor
Thread Starter
iTrader: (3)
 
Join Date: 04-25-11
Location: Port Perry
Posts: 6,199
Thanked 37 Times in 26 Posts
There is no doubt that the motor and transt can shift sideways during the install particularly if you jack the car up at the front only. Good luck
Powell Race Parts is offline  
Old 10-17-2013, 09:18 PM
  #74  
Junior Member
iTrader: (6)
 
Join Date: 01-27-11
Location: Fort Wayne, IN. USA
Posts: 402
Thanks: 0
Thanked 0 Times in 0 Posts
I just got stage 2 rotated mounts from a member on here and installed them yesterday at work using a lift. I had terrible vibrations however I did not see this how-to. I then got online last night and read I needed to loosen the top 3 engine mounts bolts to let it settle and then retorque, I did this at work today and I still have vibrations. After skimming through this thread, and I mean really skimming, I think the solution would be to re-rack the vehicle, loosen all of the lower rear mount bolts including the through bolt, front mount bolts including through bolt, and the top 3 engine mount bolts then re-torque following the sequence in the how-to. Am I wrong in thinking this or is this correct? Hopefully John can advise.
smitzk01 is offline  
Old 10-17-2013, 09:30 PM
  #75  
Supporting Vendor
Thread Starter
iTrader: (3)
 
Join Date: 04-25-11
Location: Port Perry
Posts: 6,199
Thanked 37 Times in 26 Posts
^^^ yupper.
Powell Race Parts is offline  

Thread Tools
Search this Thread
Quick Reply: Rotated mount installation M35 LSJ/LNF


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.