[Fot] TR4 Valve Guide Clearance

[EDWARD BARNARD]

Marcel:
I believe the head your were running on your TR3 was one that I did
and sold you a few years back. Can't remember if I installed cast iron or
bronze guides for you. If they were cast iron I reamed them for .001"-.0015".
If bronze I usually ream them to .003"-.0035" for added clearance. It would
take a full hand of fingers to count the stuck valves we've had with bronze
guides reamed to stock spec's. Hard for me to justify bronze guides when I
have to ream them to worn out spec's to get them to work. Oh, and they cost 5x
more than cast iron.
-Ed Barnard-
  


On Saturday, June 28, 2014 12:05 AM,
Marcel Van Mulders <van.mulders.marcel at telenet.be> wrote:
  


In the Triumph
Service Instruction Manual, 0.001" to 0.003" is recommended.
Maybe steel valve
guides will cause no problems,but I believe bronze guides
should be reamed to
the original size  after fitment
Marcel
-----Oorspronkelijk bericht-----
Van:
Fot [mailto:fot-bounces at autox.team.net] Namens Michael Moore
Verzonden:
donderdag 19 juni 2014 14:21
Aan: FOT
Onderwerp: [Fot] TR4 Valve Guide
Clearance

Is there a recommended clearance for valve guides? I may have a
valve
sticking.

Engine builder just put in oversized valves and new guides.
Thanks
Mike

62 TR4, Race car
63 TR4, Street car

Mike & Becky Moore
6050 Ruhl
Road
Fairview, PA 16415

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