91 12 valve engine question

[JCockerill]

I have a 3rd gen now, but i had a 91 1st gen 12 valve truck that i sold to a friend a few years ago. it has around 180K on it. He said it needs timing gears, truck broke down and he towed it to his yard 2-3 years ago (never fixed it). I'm thinking of buying it back and have read a little about the KDP problem, which it sounds like this is what happend. MY QUESTION FOR YOU GUYS IS, what is the worst case senerio? how much damage can i get cought up in here? and what would you offer for a truck not running like this? thanks.

 

[AVerHage]

Well a lot of things factor in to the value, I know around my area a 91 is pretty rusty, as far as the KDP, you really have to get that cover off and look at what your dealing with, It could have caused verry little damage or a lot depending on the cycle, RPM, and load that was on the engine at the time. Is it intercolled or not? that also plays into value. For a typical IC non-running in my area is 1500 or less

 

[AVerHage]

1200-1500 for a 4x4



500-800 for a 4x2

 

[JCockerill]

yeah, it is Intercooled, the truck is not that rusty. pretty clean considering age. thanks for the help. .

 

[Greenleaf]

I hear it has done little more damage than cracking the aluminum case or as much as breaking the cam and eating valves etc. along with breaking the block.

 

[dpuckett]

Worst case scenario, new cam, pump, and crank gears, new timing case and cover. Perfect opportunity to put a PDR cam in there. Removing the front cover is a 20min job. If you can get it for $500, it's worth a look.

I had one that was on the other end of the spectrum- KDP fell out, and washed into the oil pan and ddnt hit anything. My W350 had a small dent in the cover. I beat it back flat, and put it back on. I need a new seal and gasket now (still leaks a little, but not too bad).

Daniel

 

[pepecat]

i didn't think they started intercooling untill 93 could be wrong... ... .

yes you're wrong, 91. 5 is the year they started intercooling. #ad