Good evening everyone,

With an engine rebuild in the near furure I want to explore my options about larger displacement. If stock 2.0 rods + 94mm pistons = 2.0L . Then what size pistons would I need for a 2.2L or a 2.4L.

Thanks

David

96 mm pistons & barrels = 2041 cc

100 mm pistons & barrels = 2218 cc

103 mm pistons & barrels = 2356 cc

105 mm pistons & barrels = 2450 cc

"Engine
Size
[cc]" "Stroke
[mm]" 66 71 74 76 78
"Bore
[mm]"
90 1679 1807 1883 1934 1985
91 1717 1847 1925 1977 2029
92 1755 1888 1968 2021 2074
93 1793 1929 2011 2065 2119
94 1832 1971 2054 2110 2165
96 1911 2056 2143 2200 2258
103 2200 2366 2466 2533 2600
104 2243 2413 2514 2582 2650
105 2286 2459 2563 2632 2702

Here are the stock options
66x90 - 1.7L
66x93 - 1.8L
71x94 - 2.0L

And here are some popular options
71x96 - 2.1L
78x96 - 2.3L
103x71 - 2.4L
103x78 - 2.6L

That can't be right. The 71 stroke (stock 2.0 stroke) and 96mm cylinders make for 2056cc displacement.

In general, after you get to 96mm bore you start adding stroke. Over about 75-ish stroke, that gets rather complicated. After you get to 78mm stroke, you go back to larger bores but that also gets complicated and expensive.


Formula (for four-cylinder engines):
bore X bore X 3.1415926 X stroke / 1000 = displacement in cc.

So 96 * 96 * 3.1415926 * 76 / 1000 = 2200.422

--DD

Click to view attachment

Ok, so has anyone ever built a 3592??? A 3.6 liter type IV?

That must be insane ...

So who has a 98.6 MM P&C set? Nickies?

LN Engineering will make Nickies in just about any size you can think of. Some of them will require "minor machining" to other parts of your motor.

I think that FAT built up a Type IV over 3.0 liters at one point? Not sure, though.

--DD

3 liter is no problem as long as the wallet can open wide enough.. 3.2 liters is where I am with a Turbo engine I am playing with..

Here is my old 3 liter from 2003 as a daily driver on pump gas...

http://www.youtube.com/watch?v=BFFZVjptUv8

IMO after 2.5l the O.E. T4 head is incapable of supporting the engine efficiently if it will be asked to make power over 5,000. Aside from the structural integrity issues that arise with large exhaust valves, it is not possible to get a large enough ex. pipe through the pushrod tubes.

Switching to a T1 style head opens up a lot of options for large displacement T4's.

IMO the 2270 is the perfect size for a large displacement T4.

I could not agree more... Bigger is not better. 2270 is impossible to beat as an all around engine.

Yep. Great bore/stroke ratio, the bore lends itself to a strong head without a big ex. valve, the case spigots don't have to be opened up-which means a stronger case. Tons of torque. Good reliability. Definitely a good solid combo.

Other than the .4mm of stroke, is there anything fundamentally different between a 2258 and a 2270. How did we wind up with 78mm cranks and 78.4mm cranks?