Exhaust manifold hole on 2200 TC?

I

ianfordcarr

New Member
For the past few weeks I've been hearing a "chuffing" noise from the front of the engine on my 1974 2200 TC. It's most noticeable at tickover, and speeds up with revs and has been getting slightly louder over time. It sounds like a typical blown exhaust sort of noise and I seem to remember reading here that the TC manifold can be prone to this.
With this in mind I took off the air filter and carb heat shield to look for any signs, but couldn't check the front pipes because they were covered by an air intake heat box. Taking it off seemed a simple job as it was just a matter of unbolting the U clamp holding it on the first cylinder exhaust pipe. Not so! It remained firmly fastened in place somewhere I couldn't see. Any suggestions for getting at it gratefully received.
 
I had a hole in mine once, down at the bend where the pipes turn rearwards - they cop road debris and water down there. After repair I lagged that area in alloy flashing wired in place.
 
Yes, I know what you mean. Mine's been welded a couple of times down there and is more weld than metal! The noise, which I think is coming from the top of one of the front cylinder pipes is a distinct chuffing, like an old steam train, which makes me think it's just from one cylinder pipe, but I can't see how to get the heat box off to check.
 
Ian I'm guessing you are talking about this part!

IMG_20231001_124617.jpg
It will come away, there are two bolt holes on the left, (sorry the photo isn't great, I disturbed herself to take it ) and the bracket you see.
 
Yes, that's it Brian. When the box is in situ the bracket on the right is pretty well vertical, so the holes you refer to on the left must be tucked away underneath. Many thanks, that'll teach me to use a mirror and look more carefully in future .
 
ianfordcarr said:
Yes, that's it Brian. When the box is in situ the bracket on the right is pretty well vertical, so the holes you refer to on the left must be tucked away underneath. Many thanks, that'll teach me to use a mirror and look more carefully in future .
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Excellent. Now when you do get it off, don't go pulling the carbs off, take the whole manifold off, it's not that difficult. Your O rings may have perished. And you will have better access to the exhaust to inspect it. But first and most importantly, drain your coolant!! If you want to have a look at your carbs while they are off, work on them still attached to the manifold.
 
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