stripped oil feed on head

[teampruven01]

guessin i can just tap this and go with a little bigger banjo bolt? i'm not takin it off to get fixed or relocating... wtf.. one this after another.

 

[SexyDSM95]

Could you helicoil it?

 

[1990AWD]

I had the same problem so I started feeding my 14b from the OFH using FP's oil feed line and a .075" restrictor drilled out of their inline filter.

 

[DSM_PWR]

I've had this happen before. Once i just cleaned the threads with the tap and another time i used a helicoil

 

[92AWDHX40]

Mine stripped too used ofh, but i have a new head now back to the head, with this new turbo.

 

[SexyDSM95]

I had the same problem so I started feeding my 14b from the OFH using FP's oil feed line and a .075" restrictor drilled out of their inline filter.

But the OP will still need to fix his stripped out bolt hole on the head.

 

[jpmxrider489]

I would just helicoil it. Make sure you get it in there striaght.

 

[92AWDHX40]

Tried that yeah take your time, i had issues still leaked all over my enigne.

 

[teampruven01]

helicoil it is.. gotta go visit fastenal....

 

[1990AWD]

But the OP will still need to fix his stripped out bolt hole on the head.

Touché!

I just plugged mine.

 

[bryanwheat]

Pull the allen head plug out in the front of the head and push a something up in there to block the passage off. From there drill, tap , clean and helicoil the hole. I would then blow air thru the hole in the front to get the remaining metal particles, reinstall the plug in the front and bolt the oil supply back to the head. It is crucial that the hole is perfectly straight or else the crush washers will not seal.

 

[pauleyman]

uessin i can just tap this and go with a little bigger banjo bolt

NO NO NO NO NO
If you install a longer banjo you'll block off the oil passage to the exhaust cam. A shop did this to my friends car once. The story afterwards is too long to tell. It's off in the talon digest archives somewhere. 5000$ in damage later as it destroyed the head, cam, belt valves which happened to put holes in the pistons and starved the turbo of oil so it went also. He sued the shop.

 

[bryanwheat]

NO NO NO NO NO
If you install a longer banjo you'll block off the oil passage to the exhaust cam. A shop did this to my friends car once. The story afterwards is too long to tell. It's off in the talon digest archives somewhere. 5000$ in damage later as it destroyed the head, cam, belt valves which happened to put holes in the pistons and starved the turbo of oil so it went also. He sued the shop.

ACTUALLY, a bigger bolt will not block off the oil holes. IF you use a longer banjo than yeah is will block it off, but the stock banjo bolt doesn't even go in far enough to reach the supply for the passage or any of the hole for the passenger side cam journal. This idea isn't the greatest because the hole in the oil line is still 10mm and only has around 3mm of of material on the sealing surface. By the time you enlarge the hole enough to put a 12mm bolt in there you will not have enough surface left on the oil line for the crush washers to seal to.

 

[sk8freak8989]

Another thing to do is is cover the drill bit and tap with grease if you are going to install a helicoil. It will catch a lot of the metal shavings.

 

[Hal]

Another thing to do is is cover the drill bit and tap with grease if you are going to install a helicoil. It will catch a lot of the metal shavings.

Bad idea, you risk pushing the shavings into the vertical galley.

To do this with the least risk, the head must be removed.

Then it can be drilled, the galley plugs removed and the head properly cleaned of shavings.

Hal

 

[sk8freak8989]

Bad idea, you risk pushing the shavings into the vertical galley.

To do this with the least risk, the head must be removed.

Then it can be drilled, the galley plugs removed and the head properly cleaned of shavings.

Hal

Yes removing the head is the best way, but i have successfully done it with no damage to the car. The way i did it was take out the allen plug in the front of the head next to the oil feed hole and hold a vacuum up to it. Then i coated the bit with grease and drilled it out. I did the same thing with the tap to. After i was done i looked in with one of thoes tiny inspection cameras and i did not see any shavings.

It is still better to remove the head to do this though if you can.

 

[awdspyder98]

The way i did it was take out the allen plug in the front of the head next to the oil feed hole and hold a vacuum up to it. Then i coated the bit with grease and drilled it out. I did the same thing with the tap to. After i was done i looked in with one of thoes tiny inspection cameras and i did not see any shavings.

It is still better to remove the head to do this though if you can.

this is the safest way besides removing the head.. Just take your time.

 

[teampruven01]

Well thanks for all the ideas. But i am goin to be doin this with the head in. U just got it together im not tearing it apart again.

 

[zcoh2gdsm]

me and my step father did this when i was installing my 14b on my 2g. i couldn't get the bolt out of my OFH to use the fitting they gave me so i blocked off the OFH and tapped the head. after it was tapped you take a q-tip wit some vasoline rub on the end and put it in the hole and gently pick up all the metal shavings.

just an fyi the head allen bolt is a metric size and i couldn't find a matching bolt anywhere, hornungs, ace, lowes, home depot, no place had them no i tapped it to SPT

 

[SexyDSM95]

McMaster Carr has everything! usually NAPA does too. But MC has never let me down and located in NJ so can usually get stuff next day.

 

[Heartless]

I find it odd or maybe I was just lucky but I had this happen on a friends car so I made my own banjo bolt out of a bolt that was a little longer (at least 1/4"). It grabbed into the threads that were still good farther back in. Never had a problem, maybe I made it just short enough.

 

[92AWDHX40]

I did it with the head on problems couldnt get my helicoil in, ended up pulling the head, and trying it again, found out head was too warped so i pulled a spare out and used that. This all wouldnt have happened if i would have taken my time, plus the oem line was giving me issues so with my s.s line now its much easier to work with.

 

[drivemusicnow]

Bringing this thread back from the dead...

Has anyone had any luck driving a tapered threaded plug with a magnet on it into the stripped out hole? Something similar to: Metric Pipe Plugs

I'm hoping to avoid A) having to remove the head, and B) having to create shavings that will get pushed through the motor.

My thought is that a steel plug could "tap" it's on threads in the soft aluminum.Has anyone successfully done this? I'm thinking the M12 x 1.25mm plug which would give me the same pitch, but a larger diameter. I think I would probably need to tap at least the first few threads...

Otherwise, I would try a 3/8 pipe thread plug that should seal with it's taper...

 

[Heartless]

I'd be careful driving into aluminum it may crack. Can you slowly tap it (make sure theres oil on the tap to try and keep as many shavings on the tap as possible) and fire the engine up or crank it over to hav the oil push out the shavings? Are there no threads left in your head to use a longer banjo bolt if you can make it or have one made or buy one?

 

[miguelmcv]

Just tap it with enough grease,, The way to do this is, put a lot of grease on the tap and do only 1 turn at a time, put grease, do one turn, take the tap out and clean the grease with debris, put grease again and do another round turn, Keep doing it this way, and you will have have no problem, after you finish, insert a q-tip with grease to remove the self over and crank the engine, so the oil can take out the rest of the debris (If there is).
I just did this Today, and was so clean.