Notices
996 Forum 1999-2005
Sponsored by:

Big problem with ims, I think

Thread Tools
 
Search this Thread
 
Old May 7, 2017 | 11:10 PM
  #1  
robman's Avatar
robman
Thread Starter
Instructor
 
Joined: May 2014
Posts: 119
Likes: 1
From: north alabama
Default Big problem with ims, I think

I dropped the motor out of my car because I thought the ims went out. it would not start and had no compression. I got the motor out and was removing the exhaust while my brother in law removed the clutch and flywheel Then I heard him say the ims is bearing is still good. That's when I realized he had removed the ims flange and the motor is not on tdc on bank 1. now the ims shaft is over to one side. I tried removing the tensioner but that didn't let it center back up. I'm afraid to try and time it now.
What should I do know?

E1CCC836-4942-4B10-BEF7-D45F7B2D7C7C_zpsw9kc2sdm.jpg

Last edited by robman; May 7, 2017 at 11:46 PM.
Reply
Old May 7, 2017 | 11:52 PM
  #2  
dan_189's Avatar
dan_189
Race Car
10 Year Member
 
Joined: Nov 2014
Posts: 3,890
Likes: 162
From: Melbourne, Australia
Default

Good work on dropping the engine.

As for your issue, fear not this happened in another rebuild thread i'm not sure how it was resolved but it wasn't gave over. I'll try and find the thread for you
Reply
Old May 7, 2017 | 11:55 PM
  #3  
robman's Avatar
robman
Thread Starter
Instructor
 
Joined: May 2014
Posts: 119
Likes: 1
From: north alabama
Default

Originally Posted by dan_189
Good work on dropping the engine.

As for your issue, fear not this happened in another rebuild thread i'm not sure how it was resolved but it wasn't gave over. I'll try and find the thread for you
Thanks
Reply
Old May 8, 2017 | 12:19 AM
  #4  
dan_189's Avatar
dan_189
Race Car
10 Year Member
 
Joined: Nov 2014
Posts: 3,890
Likes: 162
From: Melbourne, Australia
Default

A quick google search turned up a fair bit:

https://www.google.com.au/search?q=r...hrome&ie=UTF-8

However if your car has no compression and wont start there might be bigger issues than the IMS.

The engine builders on here will chime in shortly i'm sure but there is a high possibility you'll need it rebuilt.

Can start with the simple things that will assist:
Year, mileage, transmission etc.
Reply
Old May 8, 2017 | 12:51 AM
  #5  
Schnell Gelb's Avatar
Schnell Gelb
Drifting
10 Year Member
 
Joined: Apr 2014
Posts: 2,337
Likes: 28
From: Los Angeles
Default

And we need the history. The engine ran fine before you dropped it ? So why are you worried about compression now? Try a blowby test? Turn (safely!) the engine over until 5 and then 6 are BDC .That would usually be the worst situation if the bores are oval.
But before all that we need the whole story in one Post including codes ,filter disection,sump plate contents otherwise we'll be just spinning our bearings.
Reply
Old May 8, 2017 | 12:59 AM
  #6  
Ahsai's Avatar
Ahsai
Nordschleife Master
 
Joined: May 2005
Posts: 7,326
Likes: 77
Default

Originally Posted by Schnell Gelb
And we need the history. The engine ran fine before you dropped it ? So why are you worried about compression now? Try a blowby test? Turn (safely!) the engine over until 5 and then 6 are BDC .That would usually be the worst situation if the bores are oval.
But before all that we need the whole story in one Post including codes ,filter disection,sump plate contents otherwise we'll be just spinning our bearings.
His original thread. Quite a strange case.

https://rennlist.com/forums/996-forum/988202-2000-c2-will-not-start.html
Reply
Old May 8, 2017 | 01:32 AM
  #7  
Flat6 Innovations's Avatar
Flat6 Innovations
Former Vendor
 
Joined: Nov 2010
Posts: 6,968
Likes: 2,341
From: Cleveland Georgia
Default

You screwed this up.

The tensioner must be removed BEFORE the IMS Flange is removed. You must also have the engine at TDC and the crank locked before the flange is removed. Now the engine must be re- timed as it appears that you didn't do either of these things.

Like I say in my classes, the biggest mistakes are made with this procedure, in the first 5 minutes.
Reply
Old May 8, 2017 | 09:23 AM
  #8  
robman's Avatar
robman
Thread Starter
Instructor
 
Joined: May 2014
Posts: 119
Likes: 1
From: north alabama
Default

Originally Posted by Flat6 Innovations
You screwed this up.

The tensioner must be removed BEFORE the IMS Flange is removed. You must also have the engine at TDC and the crank locked before the flange is removed. Now the engine must be re- timed as it appears that you didn't do either of these things.

Like I say in my classes, the biggest mistakes are made with this procedure, in the first 5 minutes.
as I said I the post I wasn't going to pull the flange off until I got it on tdc and the cams locked. My brother in law pulled it off before I had a chance to get it ready.
As for the motor before removal it was running great no issues what so ever. I went to start it one day and nothing, just turns over. I checked the spark and it was firing. Checked compression on number six and there was zero. So I new the motor would have to come out. I figured the Ims had failed but the bearing looks to be fine. Is there a way to get the flange back on so I can time it?
Reply
Old May 8, 2017 | 11:26 AM
  #9  
charlieaf92's Avatar
charlieaf92
Rennlist Member
10 Year Member
 
Joined: Nov 2013
Posts: 931
Likes: 105
From: cincinnati
Default

My guess is that to get the flange back on you need to remove the two lower chain tensioners. But since you've yet to discover the problem, why bother at this point? I'd think you should just continue to disassemble until you get to the culprit then decide a course of action.
Reply
Old May 8, 2017 | 11:42 AM
  #10  
robman's Avatar
robman
Thread Starter
Instructor
 
Joined: May 2014
Posts: 119
Likes: 1
From: north alabama
Default

Yep that's what I'm going to do. I guess I'm going to take the motor to the shop and let them diagnose the problem.
Thanks
Reply
Old May 8, 2017 | 01:05 PM
  #11  
johnireland's Avatar
johnireland
Rennlist Member
 
Joined: Sep 2014
Posts: 1,652
Likes: 14
From: Sherman Oaks, CA
Default

Another DIY nightmare. The 996 is not the car to "learn as you go."
Reply
Old May 8, 2017 | 01:14 PM
  #12  
Schnell Gelb's Avatar
Schnell Gelb
Drifting
10 Year Member
 
Joined: Apr 2014
Posts: 2,337
Likes: 28
From: Los Angeles
Default

Originally Posted by robman
Yep that's what I'm going to do. I guess I'm going to take the motor to the shop and let them diagnose the problem.
Thanks
There is an expert somewhat near you.He posts on Renntech as Porschetech3 .He may have a referral for you. The M96 is a peculiar piece of engineering that should be worked on by a specialist ,not a generalist.
Reply
Old May 8, 2017 | 02:11 PM
  #13  
squawbum's Avatar
squawbum
Instructor
 
Joined: Feb 2017
Posts: 103
Likes: 2
From: Marin County
Default

Ditto what 5CHN3LL said in post #12!
Reply
Old May 8, 2017 | 02:17 PM
  #14  
808Bill's Avatar
808Bill
Nordschleife Master
5 Year Member
 
Joined: Dec 2016
Posts: 8,050
Likes: 819
From: Kauai
Default

x2 on both the above...Rob, you have two good options here. Keep us posted!
Reply
Old May 8, 2017 | 06:19 PM
  #15  
robman's Avatar
robman
Thread Starter
Instructor
 
Joined: May 2014
Posts: 119
Likes: 1
From: north alabama
Default

I bit the bullet and carried the motor to martins classic cars in Huntsville AL. About all they work on is Porsche. There was a lot of cool 911's and 956's there getting work done. I just don't have time to work on it very much. I believe that I could have figured it out with the help from you guys but if I want to enjoy driving it this year I needed to get professional help. Thank guys I'll keep you updated.
Reply



All times are GMT -3. The time now is 01:18 PM.