Oil Filter Adapter Cross Threaded
Well the idiot who had this vette before me 1990 VIN 8 put on the wrong oil filter and made it work. It should be a PH30 (fram of course). Anyways, the first thread is FUBAR and barely got the old filter off with channel locks and now I know why. I'm having a hard time finding the part to replace it with. In my service manual its called an "adapter, oil filter bypass valve". Looks like there was three bolts holding it in (this is the piece the filter threads onto. Is this somthing that could be easily replace in my driveway? If so where can I find the replacement?
Thanks!
Well the idiot who had this vette before me 1990 VIN 8 put on the wrong oil filter and made it work. It should be a PH30 (fram of course). Anyways, the first thread is FUBAR and barely got the old filter off with channel locks and now I know why. I'm having a hard time finding the part to replace it with. In my service manual its called an "adapter, oil filter bypass valve". Looks like there was three bolts holding it in (this is the piece the filter threads onto. Is this somthing that could be easily replace in my driveway? If so where can I find the replacement?
Thanks!Expect to pay $15 to $20 for a new one, or about $5 for a used one.






Assuming you don't have the factory oil cooler, lt $20 should buy a new one. And, two bolts (during an oil change) fixes your problem.
If you have an oil cooler, that's a different story. Since that part has been discontinued (from what I read), you'd have to either A) find a salvage part, B) fix/cut/grind off the bad thread, or C) delete the oil cooler and the adjoining hoses.
Option C would require a double male 3/4" hose coupler placed where the hose "T" is molded into the lower heater hose. (Or a complete new hose w/o that "T".
Edit:
In case you're not familiar with the factory oil cooler, they look like this.... (ignore the yellow arrows)
Last edited by GREGGPENN; Oct 3, 2010 at 05:50 PM.






