Dreaded Downpipe crack....
Hi Guys
I have my first evening (2-3 hours) track day in two days time and have just found a small crack in the down pipe :facepalm: :vash:....about 4 inches from the turbo outlet. I appreciate this needs to be fixed but my question is, will driving it like this cause any serious problems? (it doesn't appear to have yet...) Also, is this the most likely cause of my hunting idle and flat spot on pressing the accelerator when starting from stopped.......? (eg. lights, give ways etc) Cheers Mark |
Originally Posted by mx5-kiwi
(Post 800538)
I appreciate this needs to be fixed but my question is, will driving it like this cause any serious problems?
Also, is this the most likely cause of my hunting idle and flat spot on pressing the accelerator when starting from stopped.......? (eg. lights, give ways etc) |
Thanks Joe. I might get the crack welded temporarily and look at my options.
The muffler people say the exhaust heat wrap can contribute to this issue, anyone care to comment on that? |
Originally Posted by mx5-kiwi
(Post 800555)
Thanks Joe. I might get the crack welded temporarily and look at my options.
The muffler people say the exhaust heat wrap can contribute to this issue, anyone care to comment on that? Usually though when the wrap causes failure it's usually by a flange, where the wrap ends and pipe is exposed. That exposed section of pipe radiates heat out from it's surface and is usually much cooler than the wrapped section of pipe next to it. That temperature differential can cause the welds and piping to anneal and eventually break. |
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