Floor the gas pedal then look and see if the carbs are actually fully open..
dave
frogeye@porterscustom.com
Porter Customs 2909 Arno NE
Albuquerque, NM USA 87107
505-352-1378
1954 BN2 1959 AN5
Porter Custom Bicycles
cars:
www.britishcarforum.com/portercustoms.html
gallery:
http://picasaweb.google.com/porterscustombicycles/PorterCustomBicyclesStuff
GO HERE: http://porterbikes.com/ nice pictures-fun facts-my world
-----Original Message-----
From: healeys-bounces@autox.team.net [mailto:healeys-bounces@autox.team.net]
On Behalf Of Bob Spidell
Sent: Wednesday, June 15, 2011 11:01 AM
To: healeys
Subject: [Healeys] Power
I noticed on my most recent long road trip that my BJ8 seemed to be running
out of HP and/or torque on long uphill grades. I seem to get to about 4K RPM
then the engine won't rev any more (yes, I downshift as required--it just
seems the engine should be able to rev a bit more to go with the low-end
torque). The engine is mostly stock--except for aftermarket air and oil
filters and Pertronix ignition--and has about 80K miles on a rebuild.
Cylinders were bored 0.030" over from an earlier rebuild. The cam is the
mildest of 5 grinds offered by Crower; slightly lopey at idle but generally
smooth and responsive (about 252deg overlap at 0.050"). I have a Lempert
3.54 rearend installed, which of course has a significant impact. The
exhaust is made of Ansa pipes with newer glasspacks stitched in--I believe
it flows reasonably well.
Anyway, I'm starting to think about the next rebuild and wondering what
might address this issue. I know headers, Webers, etc. would address
breathing issues, but I want to keep stock intake and exhaust. What would
help this engine's apparent emphysema; more radical cam, Al head, shorter
exhaust system, lightened flywheel, higher CR, ...? I don't want to build a
racer, just want to address the wheezing at higher RPMs. IOW, I'm willing to
trade (a little) bottom end torque for a bit more top end.
Bob
--------------------------------
Bob Spidell - San Jose, CA
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