exhaust mani bolts

[91turbolaser]

hey i was testing to see if i could get to all the bolts to take off the manifold and one on the top that holds to the block broke off. soo i guess theres a piece inside still. is there any harm that can be caused by leaving it like this? it cant go anywhere right or cause any sort of leaks can it?. its broken which sucks but wont hurt anything will it? thanks. matt

[Jack(IAT)]

Holds to the block? You're going to have to describe it a little more. If you are looking for the exhaust mani to head studs, I have a bunch of nice heat treated units here with the CORRECT locking nuts for around $200 each. You will never have to worry about leaks or then backing out. Also keep EVO 4 layer gaskets on stock.

Jack

[91turbolaser]

ya sorry i mean manifold to head bolts. one broke off. it this going to cause any problems. when i do swap manifolds can i just leave the one bolt off, b\c im sure it wont be easy to get out of there it broke off deep. thanks for advice. matt

[DlandryTSI]

ya sorry i mean manifold to head bolts. one broke off. it this going to cause any problems. when i do swap manifolds can i just leave the one bolt off, b\c im sure it wont be easy to get out of there it broke off deep. thanks for advice. matt

Take the time and do it right. Otherwise you will get an exhaust leak in that area.

--Dave

[Jack(IAT)]

You have to have all of them. If you are missing one, you will be screwed again in the VERY near future with a pressure leak. Take the head off and while you're at it, rebuild it and make the engine 100% again.

Jack

[91turbolaser]

the engine was rebuilt about 20k ago. im hoping it would be fine still. so i do have to take the head off to get that broken bolt out? also can i reuse the valve cover gasket and this would probably be a good time to replace lifters right?!? thanks. matt

[91turbolaser]

this isnt my mani, but i circled and pointed to the bolt that broke. incase maybe i was confusing earlier and wasnt sure if top and bottom of manifold both go into head so heres the broken bolt just in case. can i still drive car like this? it cant go anywhere right?or damage engine in any way can it?. .thanks

[Jack(IAT)]

Okay, the exhaust manifold has to create pressure in order to spool a turbocharger. If you have a leak there, you are losing the ability to use the turbo to its full potential. There is an incredible amount of heat and pressure there, and only one missing stud can screw the whole system. If you want the car to hesitate under boost, then don't fix it. If you continue to drive the car with a leaking gasket at the head, more studs are going to break. The leaks overheat the studs at the mating surface and makes them brittle. It will either break off on its own, or will break when you try to take it out, so more are going to break as the leak gets worse. You can either do it right, or fight broken studs throughout the life of the car.

Sometimes, if you are lucky, you can get the stud out without pulling the head. You need reverse (?) drill bits and a steady hand to not screw up the head. You can sometimes use the manifold flange as a guide to keep the bit straight.

Jack

[hoffman]

I have one like that on my beater.

Imagine a t25 spooling like 20g.

Get it fixed.

[91turbolaser]

ok thanks for the tips and help that makes sense. i appreciate it a lot. thanks again. matt