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Discussion Starter · #1 ·
I know it here somewhere cannot find it but i am looking for bore sizes and crank sizes that are avaliable and their combo numbers like 1130/1250/1302/... links or info appreciated
andrew
 

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Using the 4.25" liners will get you a 1373 (if I remember correctly) with a 1/8" crank, 1450 with a 1/4" crank, and a 1550 with a 1/2" crank.

Using the 1250cc liners would get you a 1302 with a 1/8"crank, a 1373 (if I remember correctly) with a 1/4" crank and I'm not sure abou the 1/2" crank.

Using stock 1130cc liners will get you a 1173 with an 1/8" crank, 1231 with a 1/4" crank, and I'm not sure with a 1/2" crank.

Using the 4.25" liners with a stock crank would be a 1320.
 

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1130 bore = 100mm
1250 bore = 105mm
Stock stroke = 72mm
Destroyer stroke = 75mm
"1/4" stroke = 78mm
"3/8" stroke = 81mm
"1/2" stroke = 84.5mm

1130 with Destroyer Crank = 1178.1cc
1130 with "1/4" crank = 1225.2cc
1130 with "3/8" crank = 1272.4cc
1130 with "1/2" crank = 1327.3cc

1250 with Destroyer Crank = 1298.9cc
1250 with "1/4" crank = 1350.8cc
1250 with "3/8" crank = 1402.8cc
1250 with "1/2" crank = 1463.4cc
 

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brett
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has anyone built , a 3/8th and 1/2 stroke in the 1130 engine ??? and how many have done 1/4 strke,and have milage on them,
 

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Discussion Starter · #9 ·
Thank you all for the links and info. I saw some pistons all different sizes for the v rod it seems like too many sizes for the combo's I have seen and read about. The 1250 liners how far can be bored out? (Safely) Are there aftermarket liners that require the case to be bored bigger or they just boring the 1250 liners out more?
Andrew
 

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The problem with that is the stroke options are incorrect. Falicon is 78, 81, and 84.5mm, not 1/4, 3/8, and 1/2" as so commonly thought.
just learned something.. they are listed as 1/4 3/8 1/2 etc. but really aren`t,, i have been using a true 1/4 stoke increase in my engine analyzer program , will have to change that.. the spread sheet i posted originally came from this forum so i guess the author didn`t know that either..
 

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Thank you all for the links and info. I saw some pistons all different sizes for the v rod it seems like too many sizes for the combo's I have seen and read about. The 1250 liners how far can be bored out? (Safely) Are there aftermarket liners that require the case to be bored bigger or they just boring the 1250 liners out more?
Andrew
The 1250 bore and 4.25" bore are different cylinder sizes. They do not bore the cylinders they machine the engine case to accept the bigger cylinder sleeves. You will need to bore the case if you have an 1130 to install the 1250 or 4.25" sleeves.
 
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