Keith:
Sounds like eveything is perfect - that's what a big Healey should sound
like when it's in good tune. Of course, you just might have to drive it a
lot all summer to confirm ----------!
A wise old Healey mechanic once told me that if the engine is stock and
properly tuned, it will pull smoothly from 1000 RPM in 4th gear (overdrive
not engaged) on level ground with moderate throttle. Carb mixture setting
is particularly critical with this test - it has to be perfect. I've tried
it on my Healeys - it's a pretty good indicator of the state of the engine's
tune.
If you try it, let us know how it goes.
Earl Kagna
Victoria, B.C.
BT7 tri-carb
BJ8
----- Original Message -----
From: <pennell@cox.net>
To: <healeys@autox.team.net>
Sent: Sunday, June 01, 2008 7:49 PM
Subject: [Healeys] Burbling exhaust
Listers,
Recently I adjusted the valves on the BN7. It had been running fair but
would not idle too well. It would slowly lose rpms down to 300 or so and
get rough. After some head work about 1000 miles back I figured it was
time.
Now it runs quite well and idles smoothly at 700. Unique thing is that on
downshifting I get a pleasant burbling from the exhaust in 3rd and 2nd
gears. Not backfiring but a real nice, mild rumble as the rpms drop. Is
this a sign of anything bad?
Any thoughts welcome
Keith Pennell
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