Destroker kit, want to know all!

[goodhart]

my buddy had a civic hatch wit a B18c5 motor tha went to 13k but had an issue with tryin to push 14k


Funniest thing I've heard all day!!

Video of said car please :D

[Constant_Project21]

Great concept, but good luck shifting at those speeds.

That was another thing I thought about. Maybe a built auto to go along with a destroker? I'm not planning on building one anytime soon, just trying to get to know all of the options "just in case". I wanna see some numbers on these motors.

[Constant_Project21]

my buddy had a civic hatch wit a B18c5 motor tha went to 13k but had an issue with tryin to push 14k

B18c5 is a type r if I'm not mistaken. I know they rev to like 9k easy, but 13k damn...

[Goat Blower]

Good luck shifting or having a head that will breathe at 10k.



This stuff isn't new, Marco's been building 2.1's since 2001. And there's actually quite a few people running past 10k on various DSM motors, pretty much anyone in the 9's or better, which these days is a lot. And our heads flow plenty for 10k usage with mild work. You should see what it takes to get a stock 350 Chevy head to flow anywhere near what ours will.

[96GST16g]

mmmm the car blew up? thats why 14 was a problem dropped a valve n that was the end of that motor

[Goat Blower]

In fact, we all know someone running a stroker past 10k with a 2G head. DSM heads are not a restriction.

[Super Bleeder!!]

This stuff isn't new, Marco's been building 2.1's since 2001. And there's actually quite a few people running past 10k on various DSM motors, pretty much anyone in the 9's or better, which these days is a lot. And our heads flow plenty for 10k usage with mild work. You should see what it takes to get a stock 350 Chevy head to flow anywhere near what ours will.

I never said any of this is new, i just think its silly to want to rev so high in a street car just for the sake of it.

None of us are rau or shep, and i'm fairly certain they are running 2.0s anyway.

[goodhart]

Rau and Shep both run 2.0's, Kiggly runs a stroker

[mukapahnpy]

Info taken off of DTuners, credit Delta448

Delta448 posted this in another 2.2 thread

The formula for displacement is 3.1415 * (bore/2)^2 * stroke * number of cylinders.

Using an 88mm (stock 2.0L) crankshaft:
85mm bore = 1997cc
85.5mm bore = 2021
86mm bore = 2045
86.5mm bore = 2068
87mm bore = 2092
87.5mm bore = 2116
88mm bore = 2141
Rod Ratios: stock piston and 150mm rod = 1.70
stroker piston and 156mm rod = 1.77
stroker piston, 2.4 block, 162mm rod = 1.84


For a 92mm Magnus crankshaft:
85mm bore = 2088cc
85.5mm bore = 2113
86mm bore = 2138
86.5mm bore = 2163
87mm bore = 2188
87.5mm bore = 2213
88mm bore = 2238
Rod Ratios: stock piston, 148mm rod = 1.61
stroker piston, 154mm rod = 1.67
stroker piston, 2.4 block, 160mm rod = 1.74


For a 94mm Eagle crankshaft:
85mm bore = 2134cc
85.5mm bore = 2159
86mm bore = 2184
86.5mm bore = 2209
87mm bore = 2235
87.5mm bore = 2261
88mm bore = 2287
Rod Ratios: stock piston, 147mm rod = 1.56
stroker piston, 153mm rod = 1.63
stroker piston, 2.4 block, 159mm rod = 1.69


For a 97mm Crower crankshaft:
85mm bore = 2202cc
85.5mm bore = 2228
86mm bore = 2254
86.5mm bore = 2280
87mm bore = 2306
87.5mm bore = 2333
88mm bore = 2360
Rod Ratios: stock piston, 145.5mm rod = 1.5
stroker piston, 151.5mm rod = 1.56
stroker piston, 2.4 block, 157.5mm rod = 1.62


For a 100mm (stock 2.4L) crankshaft:
85mm bore = 2270cc
85.5mm bore = 2296
86mm bore = 2323
86.5mm bore = 2350
87mm bore = 2378
87.5mm bore = 2405
88mm bore = 2433
Rod Ratios: stock pistons, 144mm rod = 1.44
stroker pistons, 150mm rod = 1.50
stroker pistons, 2.4 block, 156mm rod = 1.56


For a 102mm Crower crankshaft:
85mm bore = 2315cc
85.5mm bore = 2342
86mm bore = 2370
86.5mm bore = 2397
87mm bore = 2425
87.5mm bore = 2453
88mm bore = 2481
Rod Ratios: stock piston, 143mm rod = 1.40
stroker piston, 149mm rod = 1.46
stroker piston, 2.4 block, 155mm rod = 1.52


For a 106mm Crower crankshaft:
Crower states the 106mm crank must be used in a 2.4L block, stock 2.4L bore is 86.5mm.
85mm bore = n/a
85.5mm bore = n/a
86mm bore = n/a
86.5mm bore = 2491cc
87mm bore = 2520
87.5mm bore = 2549
88mm bore = 2579
Rod Ratios: stock piston, 2.4 block, 147mm rod = 1.39
stroker piston, 2.4 block, 153mm rod = 1.44

[Goat Blower]

Wow, with that 106mm crank, we're almost to the 2.7L that Crankwalker promised us years ago. :tongue: