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[Healeys] Power

To: healeys <healeys@autox.team.net>
Subject: [Healeys] Power
From: Bob Spidell <bspidell@comcast.net>
Date: Wed, 15 Jun 2011 17:00:33 +0000 (UTC)
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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