I been fighting with this problem of my bolts backing out of my manifold thus causing leak. I been debating to swich to studs with locking nuts. Is this best way to go. Also my bolts i use are M8 1.25 30mm am i using right size or its that my problem? Any input would be great

 

lock washers are the way to go, and i like a little anti seize to. studs or not thats up to you

 

lock washers are no good on aluminum read a honda guide.they will strip ur head. Maybe try 2 nuts on the stud if u got room or thread lock. Just let it dry before starting ur car

 

I have put Locktight and let dry on them but I dont think it did anything.

 

Also is my bolt sizing correct?

 

studs all the way

 

Since I started using these, I've had zero problems.

http://www.nordlock.com/

 

m8 x1.25 is what goes into the head but your title says that you want to know about manifold to turbo which are often 3/8 x 16tpi. I use 3/8" studs on the turbo to manifold connection with long brass nuts. They never come loose and don't seize up like steel does. I have used these on lots of different cars with good luck.

 

Well, hello, Thomas.

I would suggest you check your pm.

 

Thanks