This is the second time since I installed the DP Tuner, about 4 months. The bolts that mate the compressor to exhust side back out. Luckily today i was able to find 1. Cant see or feel the rear one, but the two on top for sure. The only thing holding it up is probably my 4" exhaust!

Anyone else have this issue, if so how did you fix it. Plan on getting a 38r, but thats a ways away.


thanks,
Josh

 

There are 4 bolts total. If the lower two are loose then the upper two won't stay tight very long and back out again. Unfortunately to get to the lower two you have to remove the two long turbo pedestal bolts. If you are going that far then you might as well pull the turbo so you can make sure you tighten all 4 housing bolts. You will need turbo to pedestal o-rings to put it back together.

Ford says their replacement bolts have a special thread that helps them remain tight...looked like normal bolts to me though. Maybe they are a little different because I haven't had any more problems since I replaced the bolts with the new design. The part number for the bolts is N811266-S437. Pack of 4 pcs. Ford is proud of these suckers....I think it cost me over $30 for the bolts.

You do not have to disassemble the turbo housings to install the new bolts. It can be done with a quality 8mm combination wrench and it helps to have the turbo on a workbench to make the job easier.

 

I had the same problem with mine a few years back, someone on here gave me the IH part number, I have a dealer in town, ordered them, put them in, no problems since-the thread MUST somehow be different than the originals....I can dig up the IH number if anyone needs it.

 

TSB 03-21-49 covers this issue.

You must use new bolts or a very good thread locker to hold these in. The heat and cool cycles are the culprit to making them loose.