Piston skirt. Who needs a piston skirt. Ferrari 812 Superfast piston:
Piston top:
Ali
Piston top:
Ali
We Are Obsessed But Does It Really Matter
- Thread starter AEHaas
- Start date
Couldn't short-skirt pistons be used on long-stroke engines?
Why not use almost skirtless pistons in more applications?
We've both addressed the question almost simultaneously ...
Yay!!
OVERKILL
$100 Site Donor 2021
Short stroke with a longish rod has very little side loading/scrubbing, while a long stroke has a lot of it, and tries to rock the piston a lot.Couldn't short-skirt pistons be used on long-stroke engines?
Why not use almost skirtless pistons in more applications?
Of course the taller the piston and longer the skirt, the more friction you have in the bores, which is why attempts to shorten them as much as possible are made.
When I worked on engines the pistons were taller than they were wide and never clean. Imagine the drag.
Ali
Ali
Jackson_Slugger
$50 Site Donor 2022
I remember years ago someone said if you use anything thicker than 0W20, the oil won’t be able to get into the “nooks and crannies” of the engine haha!
Maybe he was talking about Thomas' English Muffins?
The longer the stroke, the more side force there is on the piston shirt.Couldn't short-skirt pistons be used on long-stroke engines?
Why not use almost skirtless pistons in more applications?
I've seen pistons with much shorter shirts than that one ... typically used in short stroke, high revving motorcycles.
Or 500” pro stock engines
Hey ripcord... Sometimes though... A pretty, pretty lady wearing tight jeans is a great option as well. I was in Food Lion grocery store about 3 weeks ago and this super pretty and tall I mean darn near my height I'm 6 ft 2 and she had jeans on and she was stunning.... I mean super pretty.
I had thought there was a Federal law not allowing good looking women in Food Lion grocery stores... I guess it may have been repealed recently.
Mine wasn't reliable or durable. My Mercury Comet 289 V8 needed a valve job at about 60,000 miles and was a heavy oil burner by 80,000 miles.
Aside from the squeaking front end and the smoking/oil burning I really liked that car. But it left me on the road twice (probably a failing coil) and I gave up on it.
I gave up on my '65 Comet 289 V8 largely because of the engine. It needed a valve job at about 60,000 miles and was a smoking oil burner by 80,000 miles. The final indignity was it left me on the road twice probably due to a failing ignition coil.
At some point (a failing engine) you cut your losses. I did and it was largely because that engine was on the way out.
For the record, I took good care of it too. Regular oil changes (10W-20 in the winter, 10W-30 in the summer), air filter replaced regularly, a tune up annually (new points and plugs, timing checked), coolant replaced annually, carburetor rebuilt once.
The good news is I learned a lot about auto maintenance and repairs.
Edit - That should be 5W-20 oil in winter.
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Sorry to hear your experiences were so negative.
Due to my after school job at uncle’s repair / race shop, and my parents having a cafe across the street from the Ford, Chevy, and Plymouth dealerships, where I spent all my free time, I got a birds eye view of the sales & repair side of the 1950’s to 1970’s car business in middle America. There were some poor engineering here and there, but the Ford small blocks were among the most durable, My parents took their Ford Fairlane 500 in to the dealership for a tune up every 20,000 miles, whether it needed it or not. Oil changes were done at the neighborhood Phillips 66 station every 2,500 to 3,000 miles. When the car was traded in in the mid 1970’s it had over 300,000 miles on it. Visiting relatives on the west coast accounted for most of that
Photo from in front of Donges Ford, Bartlesville Oklahoma, circa fall ‘65 or spring ‘66. The 1966 models were on sale.
Z
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It does matter. I think using a quality oil along with proper OCI'S is key. Many folks say 3k is too short given today's oil and motor technology but, any quality synthetic is cheap vs engine replacement especially when you buy from Wal-Mart. Knock on wood I haven't had any oil related failures doing this for the past nearly 3 decades. To say brand x will make your motor last this much longer vs brand y you are splitting hairs as formulations change all the time. Some brands more than others but most overlook the oil filter which is just as important too because that catches and holds the harmful dirt. Can't tell you how many times folks will buy a boutique oil like RP, Redline, Amsoil and throw a 3 buck Supertech oil filter on. Just my two.
Interesting.
Interesting.
You can't get much more high tech then Pro-stock.
Guys that will spend thousands to gain a few HP
Nascar is the same I recon.... probably even higher tech.
The engine will out last the rest of the drive line doing proper oil changes and using the Supertech oil filters. The air filter is the most important filter as far as engine wear.
Change oil filter and severe service OCI is there too… Forget that 20,000 mile claim.
I would bet NASCAR is even thinner than that-0W5 last I heard. Of course, when you rebuild engines every 500 miles, and are squeezing out every last HP, you have a different approach than going for 300,000 miles!Time to go with 0W-16 on the track for the real "test".
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