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Old 05-27-2015, 10:44 PM   #1
lgaston
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Default removing exhaust mid section - need some direction

long story short, I'm removing the exhaust mid section on my m44 Ti because i need to do some cutting and drilling on the manifold as well as replacing the gasket.

Where the mid section connects to the rear, I see two bolts that have compression springs. seems straightforward enough. spray everything down with PB blaster, remove all bolts, mid section comes out, do the work i need to do, mid section goes back in.

my only concern is i haven't the foggiest clue if there is any sort of seal, gasket, ring, etc between the mid section and the rear section that I might have to replace once it is out. I can't seem to find any information online regarding this part of the exhaust. i would hate to get everything taken out only to find that I need to wait a couple of days for a part I didn't know I needed.

any information you guys/girls might have would be greatly appreciated

cheers!
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Old 05-28-2015, 02:50 AM   #2
spidertri
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Default

There is no gasket between the midpipe and cat back sections. The spring bolts keep everything clamped.

You should get all new hardware for everything you'll be removing. When I removed my midpipe the first time 3 of the 4 studs on the header flange snapped after being soaked in PB for a few days and using an impact.

I used a propane torch to heat the flange and an air hammer to drive the studs out. They are just pressed in from the factory. I replaced the studs with stainless bolts, stock is M10 but 3/8" will work in a pinch.
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