Ford Sierra/Sapphire/RS500 Cosworth This forum is for discussion of all things pertaining to the Ford Sierra Cosworth.

cam bearing cap stud thread loose!

Thread Tools
 
Search this Thread
 
Old 11-06-2009, 09:55 PM
  #1  
mr_intex
I'm Finding My Feet Here Now
Thread Starter
 
mr_intex's Avatar
 
Join Date: Sep 2007
Posts: 116
Likes: 0
Received 0 Likes on 0 Posts
Thumbs up cam bearing cap stud thread loose!

i have removed the cams to replace tappets, cam bearings, new gaskets and all belts.

one of the bearing cap studs has a loose thread so i tightened it down with two nuts and then thread locked them. i managed to get it really tight in the end though do you think this will be ok?

also, i have reused some bearing cap nuts as they are only 12 months old.

i am having to do this all over again because i bought cheap tappets off ebay the first time and now i've replaced them with ina tappets from matt lewis.

many thanks and all the best to everyone!
Old 12-06-2009, 05:38 AM
  #2  
grcossie
I've found that life I needed.. It's HERE!!
 
grcossie's Avatar
 
Join Date: May 2007
Location: norway
Posts: 1,262
Received 20 Likes on 20 Posts
Default

Use time sert to fix your thread, i done this many times, never problem after
Old 12-06-2009, 08:41 AM
  #3  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

There's no need to change the bearing cap nuts anyway.
The stud doesn't have a great force on it from the torqueing up poundage, so hopefully be ok, but if not do as said time sert etc.
tabetha
Old 12-06-2009, 09:00 AM
  #4  
D700 OMB
Its standard!!
iTrader: (1)
 
D700 OMB's Avatar
 
Join Date: Sep 2008
Location: In Ze Ocean
Posts: 465
Likes: 0
Received 0 Likes on 0 Posts
Default

I would do all you can to make sure they are on uber tight.
I snapped a cam because of this, and that was after helicoilin one or two cos i wasnt happy with the thread.

Just a heads up.
Old 12-06-2009, 11:21 AM
  #5  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

Std tightness is fine, doing them "uber tight" is what kills them.
tabetha
Old 12-06-2009, 11:24 AM
  #6  
D700 OMB
Its standard!!
iTrader: (1)
 
D700 OMB's Avatar
 
Join Date: Sep 2008
Location: In Ze Ocean
Posts: 465
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by tabetha
Std tightness is fine, doing them "uber tight" is what kills them.
tabetha

I'll be sure to pass on your wisdom to AG & Co as they did this for me.
Old 13-06-2009, 09:36 AM
  #7  
tabetha
20K+ Super Poster.
 
tabetha's Avatar
 
Join Date: Jul 2006
Location: uk
Posts: 24,596
Likes: 0
Received 3 Likes on 3 Posts
Default

Please do, it's not rocket science, trying to put two forces either side of a piece of alloy that doesn't want to compress, 1 of two things is going to happen, a thread is going to pull, or the cap is going to squash, the thread in the head is the weakest part, but perfectly fine for std torque.
tabetha
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Focosmitch
Ford Focus RS Parts for Sale.
5
09-03-2016 01:03 PM
Focosmitch
Cars for Sale
9
05-11-2015 08:12 PM
Focosmitch
Ford RS Cosworth Parts for Sale
5
03-11-2015 04:08 PM
rog
General Car Related Discussion.
5
04-09-2015 07:24 AM
hopper350
Garage / Workshop & Tools Section.
2
04-09-2015 12:53 AM



Quick Reply: cam bearing cap stud thread loose!



All times are GMT. The time now is 03:47 AM.