Megan Racing Manifold - possible missing nuts

[shawnhimself]

I've established I have an exhaust leak and narrowed it down to the location between the manifold and turbo. I ran some seafoam through the intake and had a good amount of smoke coming from that general area so thats my basis for now.

Well anyway on further inspection I noticed where the manifold bolts down onto the turbo the studs or bolts appear to have no fastener on top of them. I bought the car with the manifold already on so I'm not real familiar with how it is setup on there. Is there supposed to be something on there? Pictures included to illustrate what the hell im talking about, haha.

Thanks in advance guys!

[IanS]

yah, there should be nuts there, mine have rattle out a bunch of times, all the heating up and cooling down causes them to loosen up then rattle off.

[CMG]

It depends on if those are studs or bolts, since it's an aftermarket manifold the person could have used either. The way it came on my car with stock manifold was one bolt and three studs, don't know if that's standard. Look at the turbo side and see if it's a bolt head or just a nut and that should tell you. Also if you don't have them, get the little brackets on each side that hold the bolts/nuts in place. And make sure you check that Megan manifold to see if any of the runnerrs are cracked. I'm in the process of replacing my cracked MR manifold right now.

[shawnhimself]

Awesome thanks. Any idea on what will fit on there? Also should I put some lock washers on there as well?

[S14-KOUKI-MONSTER]

I have a MR manifold & I'm 99.9% sure that they're studs with nuts on the turbo side. I remember putting high-temp red locktite on them on the manifold side for insurance. I'll go out and check mine in a bit, and post back to be 100%.

[HPR]

I have an aftermarket manifold too (silk road) and mine came with studs on all 4 corners with the nut being on the turbo side. I too am experiencing massive exhaust leak.

After further inspection and pulling out the manifold and turbo. I noticed that 3 of th 4 studs snapped in half!

[GTS4-R]

thats why u use lock-tite

[doridori23]

I have an aftermarket manifold too (silk road) and mine came with studs on all 4 corners with the nut being on the turbo side. I too am experiencing massive exhaust leak.

After further inspection and pulling out the manifold and turbo. I noticed that 3 of th 4 studs snapped in half!

If the studs/nuts get loose they will rattle around and eventually falloff or worse , break. You should use a Stover style locknut (it looks oval in shape as it is literally squeezed to deform the nut for a never-let-go fitment). No loctite will hold up past 1500 degrees and your manifold can easily surpass this if doing an extended drift day or drag event. You can try Sleeve retainer however it is the highest grade of loctite available and is green in color but 9 times out of 10 you will never, ever get the nut off after a sleeve retainer application and you have to break the stud/bolt to remove it.

[Luke]

Lock Tabs are your FRIEND seriously, nylon locknuts will melt(unless you get prevailing torque nuts) and locktite will also melt.