Can anyone tell me the new engine capacity sizes for a 1098 overbore'd at plus 20, 40 and 60 thou please.
Many thanks, Mark
1098 Engine Overbore Sizes
Started by
eric67
, Jan 10 2021 07:56 PM
5 replies to this topic
#2
MiniMadRacer
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One Carb Or Two?
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Posted 10 January 2021 - 08:01 PM
I think its
1098
1115
1132
1150
#4
eric67
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Stage One Kit Fitted
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Posted 10 January 2021 - 09:18 PM
Thank you both.
#5
Hunter2
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Mini Mad
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Posted 22 March 2024 - 05:01 PM
I have a +100 thou 1098 with Russell Engineering flat top pistons, RE 266S cam/RE followers, 12g295 head with larger Paul Ivey race valves that Graham Russell cleaned up a bit,, Cooper S valve springs, HIF44, Cooper Freeflow 3 into 1 header and Maniflow twin box. Sits over a hybrid A/A+ box with close ratio gear set and 3:44 FD. On its first long run heading to Colorado in 2019 with two 1275s built by long time Mini mechanics, one who races a turbocharged Mini on Ice, my Mini was still pulling up hill in 4th when their 1275s ran out of grunt...their 2.95 FDs did not help!
#6
whistler
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Camshaft & Stage Two Head
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Posted 23 March 2024 - 03:16 PM
1098 +0.100" works out at 1200cc.
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