F***!!!! Stripped union bolt

[mnmlst]

GOD DAMNIT!!!!

I stripped another freakin bolt.
This time it is the union bolt (or the threads in the block???) for the turbo

I want to go back in time, holy SHIT IM PISSED

what do i do, if i tap it, a new bolt is going to be too small won't it?

 

[mnmlst]

update, got the bolt out it doesn't look stripped at all. definitely spins in the hole though.

 

[gsxr141]

did you look at the threads in the hole? if the bolt isn't stripped, then the block most likely is.

 

[mnmlst]

the block is stripped

 

[hvyman]

There are torque specs for a reason.

 

[mnmlst]

I know, I triple checked..
I must have gotten distracted when I calibrated my inchpound wrench and then I set it down..
Did a conversion and picked up my footpound wrench, and went to it.. But she was still set at 33 from the turbo mount nuts


I EVEN did a feel test on my old N/A block.. but when the union bolt got suspiciously taut + stripped I was hopeless.
I make these stupid tiny mistakes all the F'in time

EDIT...........^HUGE MISTAKE

 

[mnmlst]

do helicoils/time serts work for something like a banjo bolt thread?
T_T

it appears the hole goes deeper than the threads of the banjo bolt, would a longer bolt still work?

 

[hvyman]

You can try but I highly doubt it. It's cast iron. Not something easily fixed.

Any pics of the threads in the hole?

 

[mnmlst]

oh god, im going to be seriously depressed

 

[toyotanos]

You might be able to find a longer banjo bolt to bypass the damaged threads, although I'm unaware of such a bolt. I wouldn't try to make your own, that would likely end in tears.

 

[mnmlst]

I dont know the thread pitch, would it be 1.25 like most other things on the engine? I guess i've got to try some kind of threaded insert

from looking at the pictures i have come to realize the threads are only as deep as the banjo bolts.

I am thinking time sert/helicoils inserts are my only option.
any ideas/thoughts on these threaded inserts?

 

[hvyman]

might want to take a closer look. In pic no 2 it has a resemblance to cracks.

 

[mnmlst]

i revoke my previous statement, the threads in there do appear to run deeper than the threads on the banjo bolt
its possible a longer bolt would work, but will I be able to line up the banjo hole... where would I find such a bolt..

no cracks, took a good look
tight space due to oil filter piece, will be a very tricky fix

 

[super51fan]

I don't think GOD had anything to do with it. If it was anything it was the devil.


Step one is to run a tap into hole to clean threads. Make sure you put grease on tap to hold metal shavings.

I would buy a new "banjo" bolt. I did see a 26mm long banjo bolt on the web. Don't know how liong the factory one is. I would get one from Toyota.

Reinstall and see if it will hold the torque. I would say about 22 to 25 range would work. I did not look. This is one bolt I have never torqued. But you should.

If it holds great.

If not it is insert time. Oh what to do with metal shavings?

IMO good luck.

 

[atmperformance]

I bough a replacmen banjo bol that was slightly longer tan stock but my AN adapter fitting is even longer, just a reminder you can switch out to a AN fitting and this could open up more options for your thread.

 

[gsxr141]

this^

 

[DeMoN2318]

AN fitting option seems like the best route.


But if you want to stay with the banjo bolt, you might contact a brake line manufacturer (like goodrich) they have a HUGE array of bango bolts for their many differnt brake like applications.

 

[mnmlst]

Wow, to think last night i was completely hopeless, and now I come home from work to a bunch of options.
goes to show how this website ROCKS MY WORLD
*mad love*

What is/how do I install this AN fitting?


stock banjo bolt is 1 inch and 3/16 (my metric tapes r at work -.-) , so roughly 30mm long

im not sure how the longer bolt would work? because it looks to me like the deepest threads are the damaged ones

 

[DeMoN2318]

If the deepest threads are the damaged ones then I dont think the longer bolt option will work.

The AN option, I have little experience with AN fittings into a blocks, so I will let others chime in. I am sure there are several ways to go about it, so hopefully someone with experience can set you in the right direction.

But I say there is definitely hope