Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Motor mounts dont line up after replacing (Prothane)

Thread Tools
 
Search this Thread
 
Old 01-06-2010, 02:07 PM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (3)
 
pheer's Avatar
 
Join Date: Jun 2009
Location: Houston, Tx
Posts: 563
Likes: 0
Received 0 Likes on 0 Posts
Default Motor mounts dont line up after replacing (Prothane)

i bought the GM motor and trns mount set from prothane...
got the old mounts out, put the new ones in, and now the bracket won't line up to the holes.... it's about an 1/8" off, almost like i need to pull the motor forward...

has anyone run into this? do i actually need to somehow pull the motor forward?
Old 01-06-2010, 02:57 PM
  #2  
That's MISTER MODERATOR
iTrader: (9)
 
Paul Bell's Avatar
 
Join Date: Nov 2005
Location: NYC
Posts: 7,585
Received 42 Likes on 36 Posts

Default

Stock K-Frame?

I had this problem also. It was after getting the passenger side in first. Do the drivers side first and the passenger side should be easier.
Old 01-06-2010, 03:08 PM
  #3  
TECH Enthusiast
Thread Starter
iTrader: (3)
 
pheer's Avatar
 
Join Date: Jun 2009
Location: Houston, Tx
Posts: 563
Likes: 0
Received 0 Likes on 0 Posts
Default

i'm unable to get either side in.... they're both off by about the same
Old 01-06-2010, 03:14 PM
  #4  
TECH Fanatic
iTrader: (17)
 
jrpimp00's Avatar
 
Join Date: Jan 2004
Location: Fayetteville, NC
Posts: 1,069
Likes: 0
Received 0 Likes on 0 Posts

Default

I used a prybar and got mine in just fine and I actually painted mine before hand.
Old 01-06-2010, 06:01 PM
  #5  
That's MISTER MODERATOR
iTrader: (9)
 
Paul Bell's Avatar
 
Join Date: Nov 2005
Location: NYC
Posts: 7,585
Received 42 Likes on 36 Posts

Default

You will need some good long prybars. It'll go.
Old 01-06-2010, 06:02 PM
  #6  
TECH Senior Member
iTrader: (96)
 
01ssreda4's Avatar
 
Join Date: Aug 2007
Location: Turnin' Wrenches Infractions: 005
Posts: 24,241
Likes: 0
Received 79 Likes on 70 Posts

Default

Yes, pry as gently as you can to get the job done. It takes a little persuasion.
Old 01-06-2010, 07:49 PM
  #7  
Teching In
iTrader: (13)
 
Lazpno's Avatar
 
Join Date: Feb 2007
Location: Saint Louis, MO
Posts: 48
Likes: 0
Received 0 Likes on 0 Posts

Default

Do driver's side first, don't tighten bolt down, just slide bolt through. the issue that i saw with mine was that with the weight of the transmission it won't line up easily. you can loosen the transmission cross member but you can do it without. i ended up doing this solo so using a prybar wasn't really a possibility. i ended up using a scissor jack to move the motor where i wanted it.
Old 01-06-2010, 07:56 PM
  #8  
TECH Veteran
iTrader: (40)
 
00pooterSS's Avatar
 
Join Date: Mar 2008
Location: Dallas
Posts: 4,916
Received 523 Likes on 372 Posts

Default

Yeah I dont think they line up for anybody, mine didnt, prybars got mine in
Old 01-07-2010, 02:03 AM
  #9  
TECH Fanatic
iTrader: (5)
 
Mumbles's Avatar
 
Join Date: Aug 2007
Location: SouthEastern Iowa
Posts: 1,441
Likes: 0
Received 2 Likes on 2 Posts

Default

I actually had better luck installing the passenger long bolt first.

Then line up the drivers side the best you can. It won't be perfect, just get it as close as you can.

Next, install the long bolt from the Firewall side of the mount (opposite the way it was installed from the factory). With the bolt started like this, you have room to hammer that ****** home with a mallet.

This is what worked on the three sets I've helped install. And, as was previously mentioned, having a helper with a prybar is never a bad idea. Good luck, man.
Old 01-07-2010, 05:24 AM
  #10  
TECH Enthusiast
Thread Starter
iTrader: (3)
 
pheer's Avatar
 
Join Date: Jun 2009
Location: Houston, Tx
Posts: 563
Likes: 0
Received 0 Likes on 0 Posts
Default

i figured it'd boil down to gravity and somethin to do with the tranny....
what part of the engine were you guys prying? and against what were you pushing? (i can't find any place that seems to have enough room for a prybar, cept maybe the top)

@ Mumbles
my issue isn't with installing the long bolts... jus teh smaller ones that connect the mount itself to the block...
Old 01-07-2010, 06:41 AM
  #11  
TECH Fanatic
iTrader: (17)
 
BlackBADaSS02's Avatar
 
Join Date: Aug 2005
Location: Millville, NJ
Posts: 1,379
Likes: 0
Received 1 Like on 1 Post

Default

Originally Posted by Mumbles
I actually had better luck installing the passenger long bolt first.

Then line up the drivers side the best you can. It won't be perfect, just get it as close as you can.

Next, install the long bolt from the Firewall side of the mount (opposite the way it was installed from the factory). With the bolt started like this, you have room to hammer that ****** home with a mallet.
This is what I did, except I loosened up the driver side pedestal also.
Old 01-07-2010, 11:13 AM
  #12  
TECH Fanatic
iTrader: (5)
 
Mumbles's Avatar
 
Join Date: Aug 2007
Location: SouthEastern Iowa
Posts: 1,441
Likes: 0
Received 2 Likes on 2 Posts

Default

Originally Posted by pheer
i figured it'd boil down to gravity and somethin to do with the tranny....
what part of the engine were you guys prying? and against what were you pushing? (i can't find any place that seems to have enough room for a prybar, cept maybe the top)

@ Mumbles
my issue isn't with installing the long bolts... jus teh smaller ones that connect the mount itself to the block...
Ah. I see.

Mmm... I can't say I've run into this problem.

My only advice would be to play around with how high you have the motor jacked up. Maybe slip the mounts into the pedestals, then lower the motor to see if the holes line up better when the motor is closer to being in its normal position.

You could also loosen the four bolts that hold each pedestal to the K-member. (BlackBADaSS02 suggested this in previous post, as well.) The way you describe the problem in your first post, it sounds as if the pedestals are in the way to properly line up the bolt holes. This would allow some movement of the pedestals, hopefully giving you enough room to manuever the mounts against the block.

Thats all I can come up with. Good luck, man.

Last edited by Mumbles; 01-07-2010 at 02:25 PM.
Old 01-07-2010, 11:49 AM
  #13  
TECH Enthusiast
Thread Starter
iTrader: (3)
 
pheer's Avatar
 
Join Date: Jun 2009
Location: Houston, Tx
Posts: 563
Likes: 0
Received 0 Likes on 0 Posts
Default

i'll try lossening the pedestals.... that sounds like it'd give it enough play.... thanks guys
Old 01-07-2010, 12:04 PM
  #14  
11 Second Club
iTrader: (17)
 
LeftySS's Avatar
 
Join Date: Sep 2005
Location: North Little Rock, Ar
Posts: 739
Likes: 0
Received 1 Like on 1 Post

Default

The only issue I had installing mine was on the driver side. I had 3 out of the 4 bolts started but couldn't for the life of me get the lower left bolt to start. What happened was the prothane bushing was a little to wide and to bolt would bump up against it and wouldn't let the bolt quite line up. So I had to gind down the washer on the bolt. Didn't have to take much off but that let it get started in the hole. This might not be an issue with you but just something to look out for.
Old 01-07-2010, 01:03 PM
  #15  
That's MISTER MODERATOR
iTrader: (9)
 
Paul Bell's Avatar
 
Join Date: Nov 2005
Location: NYC
Posts: 7,585
Received 42 Likes on 36 Posts

Default

I think the OP is talking about getting the mounts to line up with the chassis. He already had the mounts assembled and bolted to the engine block.
Old 01-07-2010, 01:55 PM
  #16  
TECH Fanatic
iTrader: (10)
 
NHRATA01's Avatar
 
Join Date: Jan 2002
Location: Dutchess, New York
Posts: 1,797
Received 27 Likes on 22 Posts

Default

Loosening the pedestal bolts is the way to go, that's how I did it. It gives you enough play to line everything up and pull it together. Alternatively I'm trying to recall how much adjustability is in the trans mount. Usually the holes are a little bit elongated to account for slight tolerance variation.
Old 01-07-2010, 02:23 PM
  #17  
TECH Fanatic
iTrader: (5)
 
Mumbles's Avatar
 
Join Date: Aug 2007
Location: SouthEastern Iowa
Posts: 1,441
Likes: 0
Received 2 Likes on 2 Posts

Default

Originally Posted by Paul Bell
I think the OP is talking about getting the mounts to line up with the chassis. He already had the mounts assembled and bolted to the engine block.
Thats what I thought at first, as well. But the O.P. was kind enough to clear that up with a post.

Originally Posted by pheer
my issue isn't with installing the long bolts... jus teh smaller ones that connect the mount itself to the block...
Just gotta read the thread, man.
Old 01-07-2010, 06:39 PM
  #18  
TECH Enthusiast
iTrader: (19)
 
Mart00SS's Avatar
 
Join Date: Jan 2008
Location: Tequesta, FL
Posts: 597
Received 9 Likes on 7 Posts

Default

you need to bolt the mounts to the engine first and as leftySS stated sometimes the mount will get in the way of one of the bolts to the engine, I just had to mess with it for a while to get it started. Then lower it down onto the pedistals and use pry bar to persuade it in place so the long bolts line up.
Old 01-07-2010, 07:24 PM
  #19  
TECH Fanatic
iTrader: (6)
 
DarkJuggalo's Avatar
 
Join Date: Sep 2007
Location: Charlotte, NC / Ansonia,CT
Posts: 1,275
Likes: 0
Received 0 Likes on 0 Posts
Default

i used a prybar and found it easier to do pass side then driver side for mine, took a few cold beers, 2-3 breaks for more beer, and patience. it will go ya just gotta be patient with it
Old 01-07-2010, 07:55 PM
  #20  
That's MISTER MODERATOR
iTrader: (9)
 
Paul Bell's Avatar
 
Join Date: Nov 2005
Location: NYC
Posts: 7,585
Received 42 Likes on 36 Posts

Default

AHHH YES. The lubricating properties of beer!

Yhup, with the stock K-Frame, loosening the pedestals would make getting the mounts in easier. It's us with aftermarket K-Frames that have it tough. I suppose one advantage the Spohn K-Frame has over the others is that it still retains the pedestals.


Quick Reply: Motor mounts dont line up after replacing (Prothane)



All times are GMT -5. The time now is 08:22 AM.