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Amazing... so how do I find a place this good... in the Gaithersburg MD area? I've searched high and low but I haven't found a place that does it this nicely. Love seeing this and... that's what a bespoke door sill looks like? So nice... Porsche rocks.
With support from communities such as Rennlist, more shops like us could be spread across the country and the world
it’s truly a labor ppf love and it takes years to invest in our craft as there’s really no formal education in our industry that grooms for this level of service
Showing you behind-the-scenes and giving solid data to the consumer, has increased awareness and has been a win-win for industry, consumer, and the craftsman 👍
On the Canadian scene, I was under the impression that The Refinery in Toronto and JREK in Ottawa are considered by many to be among the leading shops in each of those locations.
Bulk films! Very nicely done. Too bad I can't find a detail ppf installer like you guys in GTA Ontario Canada.
Hey Man, just came across your comment here. Check out our shop at https://inkasdesign.com/ - we are inside Toronto but easy to reach from any major GTA city
Unfortunately, there were some problems with the piston rings. The company where I bought the rings should also adjust the butt play.
This was necessary because I had my block honed to 100.11mm, and of course there are no piston rings for that. The next oversize is 100.5mm, but then you have to grind in the joint play accordingly to approx. 0.3mm.
Theoretically, one could have taken a set of piston rings for the original dimension of 100mm, but then there would have been a gap of about 0.6 to 0.7mm and that was too much for me. Porsche specification is 0.2 to 0.4mm for the first and second ring.
The clearance always changes by the factor PI x difference because U=D x PI (circumference)
So with a change in the diameter of 0.1mm (like me) to the original dimension 100, the joint play is about 0.3mm larger (PI x 0.1).
I had to send the piston rings back twice because they were each too tight with a gap of 0.1mm in some cases. Too little play will inevitably lead to engine damage, since the rings can no longer expand when they get warm, you can imagine the rest....
Excessive shock play does not destroy the engine, but leads to more blow-by gases, depending on the extent to a slight loss of power/compression.
The ring in the first groove is the compression ring. It mainly dissipates the heat and has to seal the combustion chamber.
The basic principle of the 3 piston rings comes out quite well here:
Here you can clearly see why more blow-by gases occur when there is a lot of idling. Since the combustion pressure is low at very low speeds, the sealing to the cylinder wall is also not optimal.
This could result in increased oil consumption via the crankcase ventilation.
My new rings now have an angle on the inside, a small step. This optimizes the contact pressure on the cylinder wall, because that is what is desired.
Here is the comparison to my old piston rings, which only had a bevel on the inside.
The new ones are only available with a diameter of 100.5 and a height of 1.75 mm. Since my first ring groove was 1.5mm in the piston, I had it pierced so that the 1.75mm rings would fit.
The oil scraper ring is now a two-piece instead of the original three-piece. Somehow it looks way better.
Here is a comparison of the old three-part oil wiper and the new two-part ones.
The new ones with hose springs should guarantee an even better oil supply.
With a little practice and the right tools, the rings can be fitted without them, e.g. to destroy by overstretching, not difficult.
And now the pistons are equipped with new piston rings.
When installed in the block, the joints are twisted by approx. 120 degrees. This is only necessary for the first engine start.
In the course of operation, they always stand on top of each other anyway, since they rotate in the groove.
10-13-2021, 06:05 PM
Lander992TTs's 992 TTS - PPF/Ceramic/Tint
