10:1 Piston supplier

[ColoRv]

Hello all. Other than Lycon, are there other suppliers I should be looking to for 10:1 pistons in my IO-360 angle valve? Lycon is back ordered.

[rocketbob]

http://www.combustech.com/

[jrs14855]

HIO 360 D1A has 10-1 pistons as manufactured by Lycoming. Check with ECI and Superior. These are probably cast pistons, the forged aftermarket pistons are better.

[AK4x4]

AERO in stock has the combustion technology 10-1 pistion in stock. They are also a VAF supporter. Russ

[miyu1975]

so, what do 10:1 pistons do for the HP on the 200 HP IO 360.? increase to 210 or greater.

[ColoRv]

Originally Posted by AK4x4

AERO in stock has the combustion technology 10-1 pistion in stock. They are also a VAF supporter. Russ

I don't see it on their website. I see a 9.5:1 for a parallel valve but not finding the 10:1 for angle. Their descriptions leave a lot to be desired though so I may be missing it.

As for the power increase, I'm not sure but in Denver's DA we take all we can get.

[AK4x4]

Just search the Aero site for the part numbers. 10/1 for angle valve engines are P/N ASC11487 and for parallel valve P/N ASC1021FL, and ASC1021F. Russ

[659JR]

Try Jurnigan Engines in Fl. 813-752-9214. They are a distributor for CT pistons.

Jesse

[chaskuss]

Originally Posted by jrs14855

HIO 360 D1A has 10-1 pistons as manufactured by Lycoming. Check with ECI and Superior. These are probably cast pistons, the forged aftermarket pistons are better.

Per Parts Catalog PC-406-2B, the pistons for the HIO-360-D1A are indeed 10 to 1 CR Part number is LW-11487

I'm curious as to why you feel that forged pistons are better? Better for racing and high HP engines yes. But why do you think they are better for a normal engine? They weigh more [more stress on connecting rods] and they expand more than cast or hyper-eutectic pistons do. He's not building a Reno racer.

Bill, those engines with 10 to 1 CR have 1000 hour TBO, rather than 2,000 hours for the 8.7 to 1 CR engines. Since you won't be making 210+ HP, your longevity should be better.
I learned the hard way about Denver's thin air. My first visit [1986], my brother took me to the Boulder Health Club. We played handball. After 20 minutes, the room started to spin. That would not have been a "bad" thing, IF I had been drinking! [which I had not]. I investigated high altitude and alcohol later that trip, at the Stanley Hotel.

Charlie

[jrs14855]

Virtually all the hot rod engine builders are using forged pistons. As far as I can determine, for the 0 320, all that is available in 10-1 is forged. The current Kitplanes has an article on Lycon. They are machineing the forged pistons to where they are lighter than the cast.