Hi Tom,
I doubt you will hear a loose timing chain, at least I haven't that
were loose enough to wore a hole in the cover, and you do have a slack
adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
balancers come loose in their rubber mounts a bounce around against the
pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
incline to believe it's a rod bearing, I bet you wish you had just put
in the inserts while you were there, now?
God Bless America, ßill O|||||||O
mailto:--------------------

Tunohs wrote:
>
> Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> it has an annoying rattle coming from the front of the block area. It
> has 132,000 on the motor and the previous owner was mechanically
> challenged.
>
> I've changed out the rod bearings and oil pump to be safe (the rod
> bearings didn't show much wear so I just plasti-gaged the mains and
> they were within specs. Found out there was nothing to adjust on the
> lifters so now I'm suspecting that there is some slop in the timing
> chain and or tensioner.
>
> Anybody familiar with the replacement of the wearables on the valve
> timing on these engines? Best place to get replacement parts? Is the
> tensioner spring over hydraulic or just spring?
>
> Thanks for any help.
>
> Tom

 

Hi Tom,
I doubt you will hear a loose timing chain, at least I haven't that
were loose enough to wore a hole in the cover, and you do have a slack
adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
balancers come loose in their rubber mounts a bounce around against the
pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
incline to believe it's a rod bearing, I bet you wish you had just put
in the inserts while you were there, now?
God Bless America, ßill O|||||||O
mailto:--------------------

Tunohs wrote:
>
> Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> it has an annoying rattle coming from the front of the block area. It
> has 132,000 on the motor and the previous owner was mechanically
> challenged.
>
> I've changed out the rod bearings and oil pump to be safe (the rod
> bearings didn't show much wear so I just plasti-gaged the mains and
> they were within specs. Found out there was nothing to adjust on the
> lifters so now I'm suspecting that there is some slop in the timing
> chain and or tensioner.
>
> Anybody familiar with the replacement of the wearables on the valve
> timing on these engines? Best place to get replacement parts? Is the
> tensioner spring over hydraulic or just spring?
>
> Thanks for any help.
>
> Tom

 

Hi Tom,
I doubt you will hear a loose timing chain, at least I haven't that
were loose enough to wore a hole in the cover, and you do have a slack
adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
balancers come loose in their rubber mounts a bounce around against the
pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
incline to believe it's a rod bearing, I bet you wish you had just put
in the inserts while you were there, now?
God Bless America, ßill O|||||||O
mailto:--------------------

Tunohs wrote:
>
> Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> it has an annoying rattle coming from the front of the block area. It
> has 132,000 on the motor and the previous owner was mechanically
> challenged.
>
> I've changed out the rod bearings and oil pump to be safe (the rod
> bearings didn't show much wear so I just plasti-gaged the mains and
> they were within specs. Found out there was nothing to adjust on the
> lifters so now I'm suspecting that there is some slop in the timing
> chain and or tensioner.
>
> Anybody familiar with the replacement of the wearables on the valve
> timing on these engines? Best place to get replacement parts? Is the
> tensioner spring over hydraulic or just spring?
>
> Thanks for any help.
>
> Tom

 

Bill, et al.,
Thanks for the replies. I did replace the rod bearings while I was in
there along with the oil pump. It was the main bearings that mic'd
out so close to perfect that I didn't bother with them. I will check
out your link to the timing, Bill. I wonder how much the Stealership
will want for changing it out for me? Nevermind, I was just day
dreaming.

Tom

L.W.(ßill) ------ III <----------@***.net> wrote in message news:<403D1411.5E60A02E@***.net>...
> Hi Tom,
> I doubt you will hear a loose timing chain, at least I haven't that
> were loose enough to wore a hole in the cover, and you do have a slack
> adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
> balancers come loose in their rubber mounts a bounce around against the
> pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
> incline to believe it's a rod bearing, I bet you wish you had just put
> in the inserts while you were there, now?
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> Tunohs wrote:
> >
> > Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> > it has an annoying rattle coming from the front of the block area. It
> > has 132,000 on the motor and the previous owner was mechanically
> > challenged.
> >
> > I've changed out the rod bearings and oil pump to be safe (the rod
> > bearings didn't show much wear so I just plasti-gaged the mains and
> > they were within specs. Found out there was nothing to adjust on the
> > lifters so now I'm suspecting that there is some slop in the timing
> > chain and or tensioner.
> >
> > Anybody familiar with the replacement of the wearables on the valve
> > timing on these engines? Best place to get replacement parts? Is the
> > tensioner spring over hydraulic or just spring?
> >
> > Thanks for any help.
> >
> > Tom

 

Bill, et al.,
Thanks for the replies. I did replace the rod bearings while I was in
there along with the oil pump. It was the main bearings that mic'd
out so close to perfect that I didn't bother with them. I will check
out your link to the timing, Bill. I wonder how much the Stealership
will want for changing it out for me? Nevermind, I was just day
dreaming.

Tom

L.W.(ßill) ------ III <----------@***.net> wrote in message news:<403D1411.5E60A02E@***.net>...
> Hi Tom,
> I doubt you will hear a loose timing chain, at least I haven't that
> were loose enough to wore a hole in the cover, and you do have a slack
> adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
> balancers come loose in their rubber mounts a bounce around against the
> pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
> incline to believe it's a rod bearing, I bet you wish you had just put
> in the inserts while you were there, now?
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> Tunohs wrote:
> >
> > Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> > it has an annoying rattle coming from the front of the block area. It
> > has 132,000 on the motor and the previous owner was mechanically
> > challenged.
> >
> > I've changed out the rod bearings and oil pump to be safe (the rod
> > bearings didn't show much wear so I just plasti-gaged the mains and
> > they were within specs. Found out there was nothing to adjust on the
> > lifters so now I'm suspecting that there is some slop in the timing
> > chain and or tensioner.
> >
> > Anybody familiar with the replacement of the wearables on the valve
> > timing on these engines? Best place to get replacement parts? Is the
> > tensioner spring over hydraulic or just spring?
> >
> > Thanks for any help.
> >
> > Tom

 

Bill, et al.,
Thanks for the replies. I did replace the rod bearings while I was in
there along with the oil pump. It was the main bearings that mic'd
out so close to perfect that I didn't bother with them. I will check
out your link to the timing, Bill. I wonder how much the Stealership
will want for changing it out for me? Nevermind, I was just day
dreaming.

Tom

L.W.(ßill) ------ III <----------@***.net> wrote in message news:<403D1411.5E60A02E@***.net>...
> Hi Tom,
> I doubt you will hear a loose timing chain, at least I haven't that
> were loose enough to wore a hole in the cover, and you do have a slack
> adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
> balancers come loose in their rubber mounts a bounce around against the
> pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
> incline to believe it's a rod bearing, I bet you wish you had just put
> in the inserts while you were there, now?
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> Tunohs wrote:
> >
> > Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> > it has an annoying rattle coming from the front of the block area. It
> > has 132,000 on the motor and the previous owner was mechanically
> > challenged.
> >
> > I've changed out the rod bearings and oil pump to be safe (the rod
> > bearings didn't show much wear so I just plasti-gaged the mains and
> > they were within specs. Found out there was nothing to adjust on the
> > lifters so now I'm suspecting that there is some slop in the timing
> > chain and or tensioner.
> >
> > Anybody familiar with the replacement of the wearables on the valve
> > timing on these engines? Best place to get replacement parts? Is the
> > tensioner spring over hydraulic or just spring?
> >
> > Thanks for any help.
> >
> > Tom

 

FWIW
The 2.5 and 2.8 are notorious for cracked flex plates, and unless you
do a dye penetrant (or magnaflux) inspection you wont normally see the
cracking. Under extreme and changing torque load, the cracks will
'move' and it will sound like a loose bolt rattling around near the
'bottom' of the engine. A good radial crack in a flex plate will
sometimes sound like a rod knock - 'hollow' sound metallic tap.
To further locate and identify, remove the trans cover plate and have
an assistant rapidly change rpm while you have a stethoscope (or rubber
hose) to your ear and the other end near the flywheel. Cold engine
will develop more flex plate crack-movement-noise than warm.

Anyone have a suggestion of a location of 'beefed-up' flex plates .....
I usually only get 30-40K mi. and need a source of a heavier gauge
plate. Most online sources only offer standard flex plates for the
2.8L.


In article <2ceb674c.0402260602.29988756@posting.google.com >, Tunohs
<tom@fiberspec.com> wrote:

> Bill, et al.,
> Thanks for the replies. I did replace the rod bearings while I was in
> there along with the oil pump. It was the main bearings that mic'd
> out so close to perfect that I didn't bother with them. I will check
> out your link to the timing, Bill. I wonder how much the Stealership
> will want for changing it out for me? Nevermind, I was just day
> dreaming.
>
> Tom
>
> L.W.(ßill) ------ III <----------@***.net> wrote in message
> news:<403D1411.5E60A02E@***.net>...
> > Hi Tom,
> > I doubt you will hear a loose timing chain, at least I haven't that
> > were loose enough to wore a hole in the cover, and you do have a slack
> > adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
> > balancers come loose in their rubber mounts a bounce around against the
> > pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
> > incline to believe it's a rod bearing, I bet you wish you had just put
> > in the inserts while you were there, now?
> > God Bless America, ßill O|||||||O
> > mailto:--------------------
> >
> > Tunohs wrote:
> > >
> > > Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> > > it has an annoying rattle coming from the front of the block area. It
> > > has 132,000 on the motor and the previous owner was mechanically
> > > challenged.
> > >
> > > I've changed out the rod bearings and oil pump to be safe (the rod
> > > bearings didn't show much wear so I just plasti-gaged the mains and
> > > they were within specs. Found out there was nothing to adjust on the
> > > lifters so now I'm suspecting that there is some slop in the timing
> > > chain and or tensioner.
> > >
> > > Anybody familiar with the replacement of the wearables on the valve
> > > timing on these engines? Best place to get replacement parts? Is the
> > > tensioner spring over hydraulic or just spring?
> > >
> > > Thanks for any help.
> > >
> > > Tom

 

FWIW
The 2.5 and 2.8 are notorious for cracked flex plates, and unless you
do a dye penetrant (or magnaflux) inspection you wont normally see the
cracking. Under extreme and changing torque load, the cracks will
'move' and it will sound like a loose bolt rattling around near the
'bottom' of the engine. A good radial crack in a flex plate will
sometimes sound like a rod knock - 'hollow' sound metallic tap.
To further locate and identify, remove the trans cover plate and have
an assistant rapidly change rpm while you have a stethoscope (or rubber
hose) to your ear and the other end near the flywheel. Cold engine
will develop more flex plate crack-movement-noise than warm.

Anyone have a suggestion of a location of 'beefed-up' flex plates .....
I usually only get 30-40K mi. and need a source of a heavier gauge
plate. Most online sources only offer standard flex plates for the
2.8L.


In article <2ceb674c.0402260602.29988756@posting.google.com >, Tunohs
<tom@fiberspec.com> wrote:

> Bill, et al.,
> Thanks for the replies. I did replace the rod bearings while I was in
> there along with the oil pump. It was the main bearings that mic'd
> out so close to perfect that I didn't bother with them. I will check
> out your link to the timing, Bill. I wonder how much the Stealership
> will want for changing it out for me? Nevermind, I was just day
> dreaming.
>
> Tom
>
> L.W.(ßill) ------ III <----------@***.net> wrote in message
> news:<403D1411.5E60A02E@***.net>...
> > Hi Tom,
> > I doubt you will hear a loose timing chain, at least I haven't that
> > were loose enough to wore a hole in the cover, and you do have a slack
> > adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
> > balancers come loose in their rubber mounts a bounce around against the
> > pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
> > incline to believe it's a rod bearing, I bet you wish you had just put
> > in the inserts while you were there, now?
> > God Bless America, ßill O|||||||O
> > mailto:--------------------
> >
> > Tunohs wrote:
> > >
> > > Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> > > it has an annoying rattle coming from the front of the block area. It
> > > has 132,000 on the motor and the previous owner was mechanically
> > > challenged.
> > >
> > > I've changed out the rod bearings and oil pump to be safe (the rod
> > > bearings didn't show much wear so I just plasti-gaged the mains and
> > > they were within specs. Found out there was nothing to adjust on the
> > > lifters so now I'm suspecting that there is some slop in the timing
> > > chain and or tensioner.
> > >
> > > Anybody familiar with the replacement of the wearables on the valve
> > > timing on these engines? Best place to get replacement parts? Is the
> > > tensioner spring over hydraulic or just spring?
> > >
> > > Thanks for any help.
> > >
> > > Tom

 

FWIW
The 2.5 and 2.8 are notorious for cracked flex plates, and unless you
do a dye penetrant (or magnaflux) inspection you wont normally see the
cracking. Under extreme and changing torque load, the cracks will
'move' and it will sound like a loose bolt rattling around near the
'bottom' of the engine. A good radial crack in a flex plate will
sometimes sound like a rod knock - 'hollow' sound metallic tap.
To further locate and identify, remove the trans cover plate and have
an assistant rapidly change rpm while you have a stethoscope (or rubber
hose) to your ear and the other end near the flywheel. Cold engine
will develop more flex plate crack-movement-noise than warm.

Anyone have a suggestion of a location of 'beefed-up' flex plates .....
I usually only get 30-40K mi. and need a source of a heavier gauge
plate. Most online sources only offer standard flex plates for the
2.8L.


In article <2ceb674c.0402260602.29988756@posting.google.com >, Tunohs
<tom@fiberspec.com> wrote:

> Bill, et al.,
> Thanks for the replies. I did replace the rod bearings while I was in
> there along with the oil pump. It was the main bearings that mic'd
> out so close to perfect that I didn't bother with them. I will check
> out your link to the timing, Bill. I wonder how much the Stealership
> will want for changing it out for me? Nevermind, I was just day
> dreaming.
>
> Tom
>
> L.W.(ßill) ------ III <----------@***.net> wrote in message
> news:<403D1411.5E60A02E@***.net>...
> > Hi Tom,
> > I doubt you will hear a loose timing chain, at least I haven't that
> > were loose enough to wore a hole in the cover, and you do have a slack
> > adjuster: http://www.----------.com/TChain.jpg I have had many harmonic
> > balancers come loose in their rubber mounts a bounce around against the
> > pulley: http://www.----------.com/balancer.jpg and make noise. I'm more
> > incline to believe it's a rod bearing, I bet you wish you had just put
> > in the inserts while you were there, now?
> > God Bless America, ßill O|||||||O
> > mailto:--------------------
> >
> > Tunohs wrote:
> > >
> > > Hey guys and gals, I've got a 92 Wrangler with the 2.5 four banger and
> > > it has an annoying rattle coming from the front of the block area. It
> > > has 132,000 on the motor and the previous owner was mechanically
> > > challenged.
> > >
> > > I've changed out the rod bearings and oil pump to be safe (the rod
> > > bearings didn't show much wear so I just plasti-gaged the mains and
> > > they were within specs. Found out there was nothing to adjust on the
> > > lifters so now I'm suspecting that there is some slop in the timing
> > > chain and or tensioner.
> > >
> > > Anybody familiar with the replacement of the wearables on the valve
> > > timing on these engines? Best place to get replacement parts? Is the
> > > tensioner spring over hydraulic or just spring?
> > >
> > > Thanks for any help.
> > >
> > > Tom

 

Hi Tom,
Main bearings make a distinctive sound, because of their excessive
clearance the oil drains out while it's not running, then when started
you will hear that sound only until the it pressures up.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Tunohs wrote:
>
> Bill, et al.,
> Thanks for the replies. I did replace the rod bearings while I was in
> there along with the oil pump. It was the main bearings that mic'd
> out so close to perfect that I didn't bother with them. I will check
> out your link to the timing, Bill. I wonder how much the Stealership
> will want for changing it out for me? Nevermind, I was just day
> dreaming.
>
> Tom