Stroker Cylinders - O-320 HP upgrade to 180HP

[gmcjetpilot]

Originally Posted by Walt

IO370, 195hp Runs like a scalded dog!
(they have also certified this 9.6-1 CR)

http://www.continentalmotors.aero/ti...ines/x370.aspx

Superior recalled some XP382 and XP400 engines with high CR due to crank failing from detonation (I recall). I'm just not that brave... Give me an non-scalded cat... Cheers

[Jim Ball]

To clarify the information on "stroked" engines that were developed at ECi and are in production now at Continental Motors under the Titan brand.

1. The cylinders are lightened by tapering the barrel cooling fins from a wide diameter at the cylinder head end to a smaller diameter at the crankcase end.
2. The cylinders have a venturi design intake seat that increases the engine power.
3. The additional displacement is achieved by increasing the distance that the crankshaft throws ( and the pistons and connecting rods ) travel within the cylinder barrels. With the extra "stroke" the 360 engine achieves 370 cubic inches and the 320 achieves 340 cubic inches of displacement.

Titan has several options for compression pistons;
340 = 8.0 or 9.0:1
370= 7.2, 8.3, and 9.6:1

Titan also builds the 320 and 360 cubic inch displacement engines for the more conventional builders. There are quite a few beneficial options available for them too.

[Walt]

Originally Posted by gmcjetpilot

Superior recalled some XP382 and XP400 engines with high CR due to crank failing from detonation (I recall). I'm just not that brave... Give me an non-scalded cat... Cheers

Superior recalled all 382/400 engines due to defective crankshafts which were a new design, it has nothing to do with CR or stroke (or detonation IMO).

The stroked Titan engine uses the same design crank as the 360 but the rods journals have been ground offset a bit more than stock to increase the stroke.

Custom engine builders like Lycon have been building engines with 10-1 CR's for many years with no issues, don't believe me, just call them.

PS: I wish one of the moderators would fix the title to "stroker" instead of "socker"!