Thanks Oliver,
Where I'm coming from is that I'm happy with the power characteristics I
have (lots of torque, peak power of 120HP at the wheels@4200rpm), but as I'm
going to freshen up the heads, I'd like to figure out in advance whether
I'll be up for a camshaft swap at the same time. The history of my engine is
unkown, it's just as it came from a junkyard, but generally seems to be good
(doesn't burn oil, starts, runs and idles well, and the power at the wheels
is OK).
The thing that makes me wonder about the cam, is that I've observed (when I
had the rocker covers off and the engine running)that the pushrods rotate as
they actuate the valves. This is fine, as some degree of rotation is
designed into the system, but one pushrod spins round much faster than the
others, you'd think it was driven by a small motor!
Makes me wonder, but it could just be that the pushrod/lifter in question is
setup on the 'loose' side. Opinions anyone?
Simon
-----Original Message-----
From: Op [mailto:oliverp@gte.net]
Sent: Wednesday, 3 February 1999 11:54
To: Buick-Rover-V8 mailing list (E-mail)
Subject: Re: Camshafts
My reply may not be detailed enuf for what you want, but the first thing I
would do is run a compression test, and more importantly a vacuum test.
Every problem with an engine I ever had was diagnosable with a vacuum gauge.
This should point out or hint towards worn lobes. Though the few times I
have seen cars with worn lobes, they were so worn that it was easily seen
thru the lifter gallery. Hope this is not the case for you. Good Luck
Op
----- Original Message -----
From: Simon Sparrow <Simon.Sparrow@wang.co.nz>
To: Buick-Rover-V8 mailing list (E-mail) <buick-rover-v8@autox.team.net>
Sent: Tuesday, February 02, 1999 10:51 AM
Subject: Camshafts
>I'm going to get a couple of spare cylinder heads for my P76 V8, and get
>them reconditioned and mildly ported. Once this is done, I'll be able to
>swap them over with the ones already on the engine. While I'm doing this,
>I'll be taking a look at the camshaft (or what is visible...)
>
>I intend to stick with the standard cam (I believe thats whats in my
engine)
>but would like to know how to tell if its worn at all. Do I just inspect
the
>bottom of the lifters for wear patterns, or is it worth measuring the lift
>on each valve to see if there is any great differences.
>
>If the cam needs replacing does anyone have any recommendations? My car is
a
>Rover P5B (about 1500Kgs) with Toyota 5-speed manual. So basically, I'm not
>looking for huge power at 7000RPM......
>
>> .-->
>>
>Simon Sparrow
>
>Enterprise Network Architect
>WANG NZ Ltd
>
>simon.sparrow@wang.co.nz
>Telephone: +64-4-382 0239
>Facsimile: +64-4-385 6067
>Mobile: 025 230 8048
>
>
>
>
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