Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 01-11-2011, 04:15 PM
FX4OR FX4OR is offline
Ford Tough
 
Join Date: Dec 2010
Posts: 417
Default timing chain rattle question

which timing chain guide set is the one that goes bad in the sohc 4.0's? I thought I knew this problem inside & out, but I read a bunch more information and now I'm more confused haha.

Ford calls it the 'primary timing chain guide' and fixes it with part number 2U3Z6D256DA.
--Is this the one in the front of the engine..., or is it the rear one that requires engine removal that wears out?
__________________
2002 Ranger FX4
4.0L SOHC, 5R55E Auto, 4.10 8.8 Torsen, 31x10.5/15 BFG ATs
Reply With Quote
  #2  
Old 01-12-2011, 12:53 AM
wintermute wintermute is offline
'03 Edge 4x4
 
Join Date: Sep 2010
Posts: 242
Default Re: timing chain rattle question

The Primary Timing Chain is the one that links the crank to the jack shaft in the valley of the engine. Both cam chains are driven by this shaft. 4x4's also have a balance shaft along the passenger side of the engine that has its own chain from the crank.

I like the idea of using of the cylinder offset to place the cam chains for a more compact design. It's just really frustrating that something as mundane as chain guides and tensioners causes so much trouble.

I'd really like to run an inspection scope down each chain cassette to check the guide conditions.
__________________
2003 Edge 4x4 Sonic Blue 4.0 SOHC, Auto, 4.10 LSD, 4-door Supercab
Reply With Quote
  #3  
Old 01-12-2011, 12:16 PM
FX4OR FX4OR is offline
Ford Tough
 
Join Date: Dec 2010
Posts: 417
Default Re: timing chain rattle question

Quote:
Originally Posted by wintermute View Post
I'd really like to run an inspection scope down each chain cassette to check the guide conditions.
That's actually a really good idea haha.

so am I correct by going off this diagram that the problem chain guides are in the front? (The chain that goes crankshaft to jackshaft)
__________________
2002 Ranger FX4
4.0L SOHC, 5R55E Auto, 4.10 8.8 Torsen, 31x10.5/15 BFG ATs
Reply With Quote
  #4  
Old 01-12-2011, 12:20 PM
Fordzilla80 Fordzilla80 is offline
Welcome to FRF!
 
Join Date: Oct 2010
Posts: 8,954
Default Re: timing chain rattle question

I like my 3.0 so much more after seeing that diagram. I'd rather replace a cam sync any day of the week.
Reply With Quote
  #5  
Old 01-16-2011, 10:25 AM
cowboykilroy cowboykilroy is offline
Like the Forums
 
Join Date: Dec 2010
Posts: 41
Default Re: timing chain rattle question

4x4's also have a balance shaft along the passenger side of the engine that has its own chain from the crank. What is this balance shafts purpose? And why 4x4 only?Thanks Dennis
Reply With Quote
  #6  
Old 01-16-2011, 04:48 PM
crowdpleazer crowdpleazer is offline
^thats what they call me^
 
Join Date: Aug 2010
Posts: 533
Default Re: timing chain rattle question

Quote:
Originally Posted by cowboykilroy View Post
4x4's also have a balance shaft along the passenger side of the engine that has its own chain from the crank. What is this balance shafts purpose? And why 4x4 only?Thanks Dennis
i believe that the balance shaft is needed because it is a v6. a v8 is naturally balanced with the "throws" of the crank (where the rods bolt onto) being 90 degrees apart, or 4 throws total in one circle. a v6 has to have 3 throws at 120 degrees apart. making the firing order all messed up which causes vibrations.

the balance shaft counteracts the vibrations and eliminates them. why it is only in 4x4s doesnt make sense to me.

now that i think about it, my engine (which is the ohv) vibrates pretty noticeable right at 2750 rpms. i think that it is the harmonics making it do that and the fact that its a v6...

i might be wrong about all this. if i am please correct me
__________________
1998 ranger extended cab, 2wd, 4.0 ohv, 5 speed, sony xploid 52 4 way watt radio, 2 pair of pioneer 240 watt speakers, Cobra 29 LX LCD CB radio pushing 100 watts, k&n air filter, 15 inch exploder wheels, dual exhaust with 4 inch stainless tips, 2 12 inch subs with a 1000 watt amp just for the hell of it!

new project: dirt track modified racing at the local saturday night track.
Reply With Quote
  #7  
Old 01-18-2011, 05:07 AM
cowboykilroy cowboykilroy is offline
Like the Forums
 
Join Date: Dec 2010
Posts: 41
Default Re: timing chain rattle question

After I asked why on 4x4 only, I kept thinking about it and I now thing It is because in 4low there is a high probability of much higher RPMs than 2wd.Just my opinion.Dennis
Reply With Quote
  #8  
Old 02-15-2011, 10:57 PM
Ranger_EDGE Ranger_EDGE is offline
SVT
 
Join Date: Sep 2009
Posts: 2,522
Default Re: timing chain rattle question

Quote:
Originally Posted by Fordzilla80 View Post
I like my 3.0 so much more after seeing that diagram. I'd rather replace a cam sync any day of the week.
x2!! lol and i already did so i'm good
Reply With Quote
  #9  
Old 09-08-2011, 10:41 AM
Stringer Stringer is offline
Ford Tough
 
Join Date: Aug 2010
Posts: 304
Default Re: timing chain rattle question

Yes which one wears out?!?!?! I need some help!!!
__________________
OXFORD WHITE 2002 FORD RANGER SUPERCAB 4 DOOR XLT FX4 OFF ROAD 4.0L SOHC 4.10 GEARS V2.0

OXFORD WHITE 2002 FORD RANGER SUPERCAB 4 DOOR XLT FX4 OFF ROAD 4.0L SOHC 4.10 GEARS V1.0 - SOLD
Reply With Quote
  #10  
Old 09-08-2011, 10:44 AM
Clinton Clinton is offline
Banned
 
Join Date: Mar 2010
Posts: 14,046
Default Re: timing chain rattle question

Quote:
Originally Posted by Stringer View Post
Yes which one wears out?!?!?! I need some help!!!
Doesnt really matter, if the engine is out, you should just replace them both
Reply With Quote
  #11  
Old 09-08-2011, 10:55 AM
Stringer Stringer is offline
Ford Tough
 
Join Date: Aug 2010
Posts: 304
Default Re: timing chain rattle question

Do I have to take the engine out to replace both? I thought that was only for one of them?
__________________
OXFORD WHITE 2002 FORD RANGER SUPERCAB 4 DOOR XLT FX4 OFF ROAD 4.0L SOHC 4.10 GEARS V2.0

OXFORD WHITE 2002 FORD RANGER SUPERCAB 4 DOOR XLT FX4 OFF ROAD 4.0L SOHC 4.10 GEARS V1.0 - SOLD
Reply With Quote
  #12  
Old 09-08-2011, 08:53 PM
cencaltrucks cencaltrucks is offline
Buy a Ford
 
Join Date: Aug 2011
Posts: 178
Default

Yea i heard its most likely the rear one mine is doing the sane thing im not that enthused about it but its something on my priority list lol
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
SOHC Timing Chain Rattle -> Catastrophic Failure? wintermute 4.0 SOHC / 4.0 OHV Tech 4 11-18-2010 04:30 AM
4.0 Timing Chain Rattle, Educate Me. edgeman4.0 4.0 SOHC / 4.0 OHV Tech 4 05-25-2010 06:23 AM
timing chain rattle rsmustang50 4.0 SOHC / 4.0 OHV Tech 13 02-10-2010 06:19 PM
4.0 timing chain rattle RangerLuc 4.0 SOHC / 4.0 OHV Tech 0 12-03-2009 08:12 AM
4.0 Cyl Pinging or Timing Chain Rattle? jdh02b 4.0 SOHC / 4.0 OHV Tech 5 11-19-2009 03:07 PM