If any of you are fairly new at this, be warned...
With my modified stock crank, Carillo rods, forged Wiseco pistons, and
steel-shim head gasket, my piston "kissed" the head at high RPM and I spun a
bearing.
This happened at the end of a loooooong straight at Auto Club Speedway. There
went $1,000 and a bunch of hours. I was trying to achieve close to zero deck
height.
On the bench, the pistons came up to .003 from the top of the sleeve (this is
considered the deck, not the top of the block)
Now I'm running one of Mordy's .032 head gaskets for a little more Piston to
Head clearance. In one of the older posts, Greg Solow recommends at least .026
total P to H clearance because the stock crank will stretch a little at high
rpm and the piston will reach up higher than it does on the engine stand in the
garage.
~STEVE
-----Original Message-----
>From: TR4 Tony <tr4.tony@virgin.net>
>Sent: Jan 23, 2013 4:52 AM
>To: Kas Kastner <kaskas@cox.net>
>Cc: fot <fot@autox.team.net>
>Subject: Re: [Fot] TR4 deck height
>
>Hi all
>
>We run 8 thou with a steel crank , carillo rods. Flat top Venoila pistons and
>a very modified head on my TR4.
>
>As a consequence the engine 'drinks' a little and now and again when fresh and
>a tiny water seepage can be seen on the middle head studs where there is a bit
>more pressure, but its a small price to pay. This beds in after a while via
>gunge movement but teaches you to monitor the levels in the header tanks in
>the meantime.
>
>Regards
>
>Tony
>
>Sent from my iPhone
>
>On 23 Jan 2013, at 02:32, Kas Kastner <kaskas@cox.net> wrote:
>
>> Impression in the carbon is just right.
>>
>> Never be beaten by equipment
>>> From: jaboruch@netzero.net
>>> Date: Wed, 23 Jan 2013 00:38:35 +0000
>>> To: toodamnfunky@comcast.net
>>> CC: fot@autox.team.net
>>> Subject: Re: [Fot] TR4 deck height
>>>
>>> With a billet crank and Pauter rods I use a 0.010 inch deck height, plus
>> allow
>>> 0.022 for the head gasket. I have run as little as 0.007 deck, but had
>>> impressions of the head on top of the pistons. Joe(B)
>>>
>>> ---------- Original Message ----------
>>> From: "Jim Gray" <toodamnfunky@comcast.net>
>>> To: "'FoT Triumph'" <fot@autox.team.net>
>>> Subject: [Fot] TR4 deck height
>>> Date: Tue, 15 Jan 2013 18:27:14 -0700
>>>
>>> Greetings FoT,
>>>
>>> I was curious as to what the group likes to run for deck height or piston
>> to
>>> head clearance
>>>
>>> assuming forged rods and stock crank are used.
>>>
>>> I have heard everywhere from zero to .040
>>>
>>> Thanks as always,
>>>
>>> jim g
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