[Fot] Fwd: Racetorations TR2 - 4A 87mm - 89mm Thick Wall Piston Liner - Racetorations from Racetorations UK

Wed Dec 18 05:21:19 MST 2019

I sent an inquiry to Racetorations concerning their no-gasket liners and
received the following information from Darryl Uprichard.

John,

The liners at their interface with the block location holes do not require
machining. The block in this area does. Just needs a* very light face* and
at the same time ensuring that the liners will fit at a* true 90degrees to
the head face.*

Liner deck height to block should *ideally be .005".* .003" minimum. .007"
maximum.

Regards,  Darryl.

On Mon, Dec 16, 2019 at 3:57 PM Bob Kramer via Fot <fot at autox.team.net>
wrote:

> I've seen blocks that were faced with a slope to one side. Could have been
> bad prior machine work or that the factory registered the deck surface to
> the figure eight's and not the oil pan surface.
>
> Bob Kramer
>
>
> On Mon, Dec 16, 2019 at 2:39 PM van.mulders.marcel--- via Fot <
> fot at autox.team.net> wrote:
>
>>
>>
>> ------------------------------
>> *Van: *"van mulders marcel" <van.mulders.marcel at telenet.be>
>> *Aan: *"Phil Gott" <vfracing at aol.com>
>> *Verzonden: *Maandag 16 december 2019 21:37:40
>> *Onderwerp: *Re: [Fot] Racetorations TR2 - 4A 87mm - 89mm Thick Wall
>> Piston Liner - Racetorations from Racetorations UK
>>
>> That's why the copper gaskets are a bit thicker than the steel ones.
>> The liners of Darryl are sitting a little bit lower (some 0.006 :
>> probably not relevant?) and the block can be milled : that is surely an
>> advantage to get a flat top face  and the right protrusion of the liners
>> everywhere. Few blocks are truly flat and in most cases the protrusion is
>> not even everywhere. So I do agree that there is a lot to say for the
>> longer liners that Daryll is selling, not only the 72 £ a set!
>> Marcel
>> ------------------------------
>> *Van: *"fot" <fot at autox.team.net>
>> *Aan: *"Tony and Annie Garmey" <horizonracing at msn.com>
>> *Cc: *"fot" <fot at autox.team.net>, "fubog1" <fubog1 at aol.com>
>> *Verzonden: *Maandag 16 december 2019 19:33:44
>> *Onderwerp: *Re: [Fot] Racetorations TR2 - 4A 87mm - 89mm Thick Wall
>> Piston Liner - Racetorations from Racetorations UK
>>
>> Daryl advocates decking the block as well To get proper protrusion.
>> Eliminating the gasket reduces variation in protrusion due to variable
>> gasket thicknesses, and also eliminates some of the possible loss of
>> protrusion due to gasket compression ( more likely with copper than with
>> steel).
>>
>> Sent from my iPhone
>>
>> On Dec 16, 2019, at 1:02 PM, Tony and Annie Garmey via Fot <
>> fot at autox.team.net> wrote:
>>
>> 
>>
>> Regardless of who makes or supplies the liners , with the correct
>> protrusion, the liner will hourglass .
>> Only way to correct this is the use of a torque plate and then proceed
>> with boring and honing to final finish size .
>>
>> Yes , a lot of work but you’ll get better ring seal and hopefully not
>> stick a piston :-)
>>
>> Merry Christmas to all
>> T
>>
>> Sent from my iPhone
>>
>> On Dec 16, 2019, at 9:55 AM, fubog1 via Fot <fot at autox.team.net> wrote:
>>
>> The liners distort a lot when torqued down, even 87mm.
>> I have no experience with the liners in question, so can't offer anything
>> on them.
>> Glen
>>
>> Why thicker walls on a 87mm liner, they are strong enough  with the
>> normal thickness?
>>
>>
>>
>>
>> -----Original Message-----
>> From: van.mulders.marcel--- via Fot <fot at autox.team.net>
>> To: Greg Blake <gblake58tr3 at icloud.com>
>> Cc: fot <fot at autox.team.net>
>> Sent: Mon, Dec 16, 2019 10:49 am
>> Subject: Re: [Fot] Racetorations TR2 - 4A 87mm - 89mm Thick Wall Piston
>> Liner - Racetorations from Racetorations UK
>>
>> The figure of 8 gaskets are thicker than 0.010" : 0.016 or 0.018".
>> Why thicker walls on a 87mm liner, they are strong enough  with the
>> normal thickness?
>> Boring up to 89mm : I would rather buy 89mm liners, without the need of
>> machining.
>> I bought several parts from Racetorations (Darryl Uprichard) and was
>> always satisfied.
>> Marcel.
>>
>> ----- Oorspronkelijk bericht -----
>> Van: "fot" <fot at autox.team.net>
>> Aan: "fot" <fot at autox.team.net>
>> Verzonden: Zondag 15 december 2019 18:49:51
>> Onderwerp: [Fot] Racetorations TR2 - 4A 87mm - 89mm Thick Wall Piston
>> Liner - Racetorations from Racetorations UK
>>
>> I came across this advertisement today and was curious if anyone has used
>> these liners and done so w/o fo8 gaskets as described in the listing.
>>
>> Thanks
>> Greg.
>>
>>
>>
>> http://www.racetorations.co.uk/triumph-c56/tr3-c4/tr3-engine-c13/tr3-engine-bottom-end-c160/racetorations-tr2-4a-87mm-89mm-thick-wall-piston-liner-p914
>>
>>
>> Sent from my iPhone
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