Wayne:
Only replace the tappets if you plan on replacing
the cam. If you do not replace the cam, you must be certain
that you return each tappet to the same bore it was in
originally.
Lifters "wear mate" to their respective cam lobe.
If you swap lifters between lobes, you risk destroying
one or more lobes on your cam because the shape of the
lifter face will no longer be compatible with the lobe.
If the cam lobes are in good shape, and the lifters
do not show issues, reuse them as noted above. If any of
the lifters or cam lobes show a problem (other than light
wear) you must replace them as a set. Good opportunity to
install that S2 cam you've been wanting.
The above does NOT apply to roller cams, by the
way. Only flat tappet cams.
Ciao,
Vance
------------------------------
1974 Mimosa Yellow Triumph TR6
Cogito Ergo Zoom
(I think, therefore I go fast)
-----Original Message-----
From: Wayne Ross [mailto:rengrave@netzero.net]
Sent: Thursday, September 12, 2002 10:05 AM
To: 6pack
Subject: Engine re-build must-do's
Listers,
I am diving into my first engine re-build and I am reading Haynes, Bently,
magazines and whatever else I come across related to re-building a TR6
engine.
I was wondering if anyone can list the items that should "absolutely" be
replaced during a re-build. I plan on checking everything for wear, making a
list of parts, and ordering all at once from one of the big three (probably
the TRF's Winter Parts Sale for maximum discount).
Please add to the following list (tips welcome):
1. All gaskets (of course)
2. Piston Rings
3. Valves (replace w/ hardened)
4. Valve guides (replace w/ hardened)
5. Tappets
6. I know I will need to get my crankshaft turned down, so I will need
oversized bearings.
7. If Timing chain is worn (stretched), should I replace gears?
8. Camshaft (if worn)
9. Rocker Shaft (probably worn)
10. Replace Rocker Shaft spacer springs with solid spacers (is this
recommended?)
11. Add a external oil hose to feed the top of the engine (I was told that
our engines are starved for oil, and that this addition would help)
12. Is it OK to use the same bolts over again or should I definately use new
bolts on bearing caps and ?????
13.
14.
15.
Thanks,
Wayne
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