Trying to gather some objective stats on 355 exhaust headers/manifolds (collecteurs in french). I had both replaced on my car in 2003, and they are leaking again ...
I ran a similar poll on fc, with interesting results. More than 30% respondents had one failure at least, the record stands at 6.
The factory headers on my 1995 F355 lasted 41,000 miles. Just last week I started seeing bad symptoms of cracked headers. Now I'm trying to get the Tubi replacements. Sigh, time to sink 8 thousand more into my 60 thousand Ferrari.
Thanks for the suggestions earlier. As it turned out (long story), I had new headers made by Forza Motoring in Toronto for $3000. Removal and installation ran another $1k. OK, that's better than $8k--but I would have paid that much for the Tubi headers if I could have gotten them somehow. It's very hard obtaining the Tubis in the U.S.
As someone said elsewhere, even if you repair a header, then the rest of the header is just circling the drain. Might as well spend an extra thousand or two and save money + time in the long run by getting new headers.
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