[Fot] abradable coatings

[Bob Kramer]

We get the full set of Wisecos plus liners for that number, but 100 grams
is nearly a 1/4 pound!

Bob Kramer


On Wed, Oct 6, 2021 at 4:16 PM <tr4racing at googlemail.com> wrote:

> Hi Bob,
>
>
>
> the forged Mahle pistons are 100gr lighter than the Wisecos.
>
> On the photos the bigger shaped piston is the Mahle one.
>
> But it is very fragil. The skirt is very thin and to compensate for piston
> slap the skirt is longer than on the Wisecos.
>
> Price for one Piston was 250€.
>
>
>
> Cheers
>
> Chris
>
>
>
>
>
>
>
> *Von:* Bob Kramer <rkramer56 at gmail.com>
> *Gesendet:* Mittwoch, 6. Oktober 2021 23:10
> *An:* tr4racing at googlemail.com
> *Cc:* Fot <fot at autox.team.net>
> *Betreff:* Re: [Fot] abradable coatings
>
>
>
> Chris
>
>
>
> I weighed the Wisecos and compared them to some Malhe cast pistons I had.
> I'm doing this off memot but I think I weighed them with wrist pins but
> without rings.  The Wisecos were about a US pound and the cast Mahles 1.3
> pounds. The wrist pins on the cast ones are heavier than the ones that came
> with the Wiseco's.  How much lighter are the custom Malhe's?
>
>
>
> Bob Kramer
>
>
>
> On Wed, Oct 6, 2021 at 3:06 PM <tr4racing at googlemail.com> wrote:
>
> See the photos of the Wiseco pistons with coating to overcome the
> shrinking.
>
>
>
> And the difference between Wiseco and Mahle.
>
>
>
> Cheers
>
> Chris
>
>
>
>
>
>
>
>
>
> *Von:* tr4racing at gmail.com <tr4racing at gmail.com>
> *Gesendet:* Mittwoch, 6. Oktober 2021 21:54
> *An:* 'Bob Kramer' <rkramer56 at gmail.com>
> *Cc:* 'fot at autox.team.net' <fot at autox.team.net>
> *Betreff:* AW: [Fot] abradable coatings
>
>
>
> I did this once with also a set of Wiseco pistons.
>
> I had cross scuffing on all 4 pistons, because the pistons expanded to
> much to the wrong direction.
>
> I did use the coated pistons and replaced them with Mahle custom made
> pistons, which are lighter and never scuffed .
>
> I use the Mahle set since 10 years now.
>
>
>
> Cheers
>
> Chris
>
>
>
>
>
> *Von:* Fot <fot-bounces at autox.team.net> *Im Auftrag von *Bob Kramer via
> Fot
> *Gesendet:* Mittwoch, 6. Oktober 2021 17:27
> *An:* Fot <fot at autox.team.net>
> *Betreff:* [Fot] abradable coatings
>
>
>
> Has anyone used this company on a wet liner engine like a TR4? I have a
> set of scuffed Wieseco pistons that could be rescued with a skirt coating
> and the company says it will work.
>
>
>
> The coatings can be applied very thick and sometimes provide an
> interference fit when a device is assembled. During initial operation, the
> coating breaks in to form a perfect fit between mating parts. Controlled
> abrasion even accounts for thermal and torque related distortions in
> components as the coating wears in. Once the optimum fit is achieved,
> stresses on the coating are reduced and the break-in process stops.
> Durable, low friction, anti-scuff properties of the coating maintain
> tighter operating clearances and higher efficiency for the life of the
> device.
>
>
>
>
>
> https://www.line2linecoatings.com/
>
>
> Armor Clearance Control™ (Armor CC™)
> For building diametric thickness 0.002" to 0.020" - our hardest skirt
> coating.
>
>
>
> [image: Das Bild wurde vom Absender entfernt.] [image: Das Bild wurde vom
> Absender entfernt.]
>
>
>
> Extreme wear resistance provides lasting enlargement of piston skirt
> dimensions. Recommended for restoring clearances where they have opened up
> from skirt collapse, wear, clean-up honing or other.
>
> Race proven durability in NHRA PRO-MOD. Coating can be topped with Slick
> CC™ for the ultimate fit and lubricity.
>
> *Recommended for 2 strokes and 4 strokes.*
> ADVANTAGES:
>
>    - *Restores and Holds Clearances*
>
>
> Bob Kramer
>
>
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