Quick displacement question

[kooka]

People bore their motors to .040 and call their motors 2.1. If that's correct, couldn't you go 2.3, then go .040 over and have a 2.4? Am I missing something here?

According to http://www.teamcalamari.com/dox/tekdisp.html, .040 over with the 2.3 setup would give you 2378.2, meaning you basically have a 2.4ltr motor.

All the stroker stuff I've read and no one has mentioned this.

 

[bigjangin]

stock bore is 85mm stock stroke is 88. That gives a displacement of 1997ccs.

A 2.4L block has a stock bore of 86.5 and a stroke of 100mm. That is 2350ccs.

A stroker using a stock 2.0 block .040 over would 86mm witha stroke of 100mm that is 2323.5 ccs. Compared to using the stock bore with the 100mm crank which would be 2270ccs.

IMO, if you can find a good 6 bolt 2.4 with a good crank, that would be the way to go.

 

[kooka]

oh, .040 makes it 86. i was thinking .040 x2 per cyl.

(( from that to that is .040, and since each cyl is (( )) farther out, i was x2, so thinking really it really was .080 per cyl.

thats where i messed up. thanks for the reply.

 

[kpt4321]

People bore their motors to .040 and call their motors 2.1. If that's correct

It's not.

0.040" over is 86.016mm bore, which is ~2.05L. A far cry from 2.1.

 

[kooka]

It's not.

0.040" over is 86.016mm bore, which is ~2.05L. A far cry from 2.1.

ah, ok. three locals have .040 on their motors and list it as a mod, then claiming the motor to be 2.1. i was thinking it was just bad math, but after hearing it so many times (i see it on the web too a lot), maybe i was just missing something.

thanks again.

 

[herostar]

I have my stroker bored .020 over, deffinately still consider it a 2.3L

 

[90GSTman]

A .040 over 2.0 (1997cc) motor would work out to be 2043ccs.