Discussion
On drive last night started to hear tappety noise from offside of engine, stopped and checked and it appears on revving but not there at idle. Drove carefully and can hear it when engine is under load but absent when cruising. There is no loss of power and all guages read as usual, suspect manifold gasket or manifold, hope its just gasket, but how do I check it and is it ok to drive car as nearest TVR garage is 40miles away ?? Any ideas on cost if manifold itself is leaking, can it be welded ?
It's often the centre of the four into one manifold. Easy to repair leaks here with exhaust repair putty. I did this repair years ago and it's OK so far. You do need to be careful because any putty geting through the leak may block the precat. Just ram the puty in and warm it up. Best done in several layers because it needs to cure and it does so through its surface.
I found my leak by doing this - Link to method
Here's a picture of the leak test
I found my leak by doing this - Link to method
Here's a picture of the leak test
Mine had this problem, TVR use a stethoscope style listening device to get under the Manifold and exhaust pipe run across the maifold. As said before it can be sealed with exhaust paste. Mine was underneath where all the pipes join together (which is very difficult to fill)
There is a big problem with welding this area cos it really needs to be done from inside!!
It is possible to cut through the joint area, weld it from inside, and then weld the cut back in!!
Yes it can be done. Far cheaper than a new one?? just hope its a gasket!!!
gadgit.
There is a big problem with welding this area cos it really needs to be done from inside!!
It is possible to cut through the joint area, weld it from inside, and then weld the cut back in!!
Yes it can be done. Far cheaper than a new one?? just hope its a gasket!!!
gadgit.
OK, the man from Del Monte says its not exhaust, definitely from the rockers, as before audible at rest and under load not when cruising. He can inspect rockers and measure gaps but did not sound too confident, sounds like I should find TVR specialist.
Any clues to the noise source please and is this looking expensive ????
Any clues to the noise source please and is this looking expensive ????
Ok , thanks for your thoughts. After consulting a TVR garage the consensus is back to gaskets as other items like rockers make a different sound and appear all the time.
So result is its booked in next wek to have both sets of gaskets done on both sides and have the pre-cats taken out as well, I had been considering this and the situation makes it sensible to do now. Fingers crossed that it goes well as I am missing the remaining good weather before the dreaded snow arrives again !
So result is its booked in next wek to have both sets of gaskets done on both sides and have the pre-cats taken out as well, I had been considering this and the situation makes it sensible to do now. Fingers crossed that it goes well as I am missing the remaining good weather before the dreaded snow arrives again !
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