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Someone take a picture for me

spoolnaround

1/2 ton status
Joined
Apr 8, 2002
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Location
Kingsburg Ca
I need a pic from the fan looking at the harmonic balancer. I am looking to see what kind of clearance you guys have. This is the second K5 I have had that the HB rubs on the cross member.
 
This is what I am talking about. If you cant get a camera in just measure it for me and tell me what your spacing is.

HB1.jpg

HB2.jpg
 
Not a great pic, but this is shot from right under the radiator shroud... I have a good 1.5" between the crossmember and the HB.

IMG_0584.jpg
 
Ive replaced one, I guess I will do the other tomorrow. I did a 203-205 swap a couple of years ago and dont remember the HB dragging prior. It seems to be getting worse. I was thinking maybe that could have been the prob. Thanks for the replys.
 
Was this motor swapped in from a 2wd truck/car?

The clam shell that bolts on the block with three bolts is different between 2 and 4wd trucks. The 2wd's are a "shorter" shell and maybe if your motor was swapped in, it lowered the engine slightly causing the rub.
The fix is to find the correct 4wd shells and install them.
 
If everything else is straight, you more than likely have a broken engine crossmember.

Both trucks I've seen that sat that low were cracked at the crossmember, which makes the engine mounts sag. One was a '74, one was my '81 frame. The later crossmembers were reinforced because of this.

Look for cracks on the "back" side (towards rear of vehicle) of the crossmember near the frame rails. I can't recall if you can see these with the engine in place from underneath or not.
 
Last edited:
dyeager535 said:
If everything else is straight, you more than likely have a broken engine crossmember.

Both trucks I've seen that sat that low were cracked at the crossmember, which makes the engine mounts sag. One was a '74, one was my '81 frame. The later crossmembers were reinforced because of this.


what he said...


had the same issues, hell I have lots of issues..but this one can be fixed:D
 
Good info guys. Thanks for the replys. I have been under that thing 50 times looking at stuff and have not seen any cracks but I will check for them. I bought the vehicle with a salvage title (guy donated it to a non profit orginization bla bla so it got a salvage title, so the po stated) so who knows what has been done motor or mount wise. I had a leaky fuel line Sat morning and had a h@#$ of a time trying to change the line it sits so low in the frame rails.
 
Don't let this happen to you! Shiney harmonic balancers are very bad, mmmkay?

DSC00334.JPG
 
when you did your case did you raise it up in the frame higher? If so the engine pivotted on the mounts and thus pointed balancer down...?
 
i have a 4wd crossmember if you need one.
 
MNorby said:
when you did your case did you raise it up in the frame higher? If so the engine pivotted on the mounts and thus pointed balancer down...?
Although this makes sence, you would have to pick the back of the t case up alot to make the front move a little... because the front of the motor is so much closer to the pivot point then the tcase....
 
This is what was on my mind. I figured the 205 sat alot higher on the crossmember. I replaced the motor mounts and I now have appx 1/2 to 3/4 of an inch clearance.
 
yeah, I bet with worn out motor mounts and the case being raised up it would be easily possible to hit.
 
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