In a message dated 00-04-07 12:37:44 EDT, bschwart@pacbell.net writes:
<< Does anyone have the minimum distance between the frame at
it's narrowest section? In other words, will a 3 inch dia resonator fit in
there? I realize it would be close, but a 1/4 inch of clearance if mounted
properly should suffice. >>
Barry,
I have some sort of performance exhaust system on my Spit - installed by a
PO. The resonator is about 18" long (next time I'm under there, I'll measure
it!). The clearances between resonator and both frame rails are very close -
like around 1/4" on both sides....front and back.
Because the clearances are close, if the exhaust system is not aligned just
right, the resonator will bang the frame rail from normal engine flex. I
found the magic position of the hanger straps to eliminate the banging until
I replaced the exhaust manifold last October...now it's a bit more
challenging to eliminate the banging....the replacement manifold must have
been cast at a slightly different angle.
I love the sound of this system and won't give it up. I found that SOS pads
work very well as dampers between the resonator and frame where space gets
even closer...they stand up to the heat - since there's no side-to-side
rubbing, abrasion shouldn't be a problem....heck, maybe I'll enter this tip
into the Spitfire database!!!
Good luck,
chip
Chip Krout
'76 TR6 CF57822U (restoration underway)
'70 Spit Mk3 FDU78512L (ready for another driving season)
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