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> 2270 build, 2270 compression question
Alapone
post Jul 16 2018, 07:26 PM
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Hey guys,

I am having a 2270 built, 78mmx96mm. We are using the 163/86b webcam and 2.0l heads. Dellorto 45s and msds headers.

I am trying to decide on the right compression. The build is aimed at aggresive street use. I want to have as much power as possible and not have to run an external oil cooler or have any problems with detonation on 93/4 octane gas.

I have heard anything from 8.5:1 to 9.5:1. Please let me know your thoughts.

Thanks,

Andrew
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Posts in this topic
Alapone   2270 build   Jul 16 2018, 07:26 PM
r_towle   First, sarcasm. I want a brand new Ferrari, does n...   Jul 16 2018, 08:38 PM
r_towle   8.5:1   Jul 16 2018, 08:38 PM
ConeDodger   9:1   Jul 16 2018, 10:15 PM
thelogo   Yeh Not using a external oil cooler for a...   Jul 17 2018, 12:00 AM
wysri9   Yeh Not using a external oil cooler for ...   Jul 17 2018, 12:46 AM
falcor75   Carbs or fuel injection? Mine runs 10,3:1 with FI...   Jul 17 2018, 05:28 AM
wysri9   Carbs or fuel injection? Mine runs 10,3:1 with F...   Jul 17 2018, 10:36 AM
McMark   I'll throw my votes in... 8.5:1 - Very safe o...   Jul 17 2018, 05:30 AM
troth   I'll throw my votes in... 8.5:1 - Very safe ...   Jul 17 2018, 06:18 AM
Racer Chris   I'll throw my votes in... 8.5:1 - Very safe...   Jul 18 2018, 08:51 AM
Mblizzard   [quote name='troth' post='2630032' date='Jul 17 2...   Jul 18 2018, 09:12 AM
McMark   You got it. I'm speaking under the assumption...   Jul 17 2018, 08:49 AM
Mblizzard   Mine is at around the high side of 8.7. Still work...   Jul 17 2018, 08:51 AM
Elliot Cannon   8.25:1 on my 2.2 FAT Performance built type IV. ...   Jul 17 2018, 10:22 AM
Alapone   Thanks very much for all responses. This build has...   Jul 17 2018, 10:50 AM
yeahmag   Determine your dynamic compression: http://www.wa...   Jul 17 2018, 12:19 PM
ConeDodger   Determine your dynamic compression: http://www.w...   Jul 17 2018, 06:40 PM
r_towle   Sounds like a fun project. Power make heat as itâ€...   Jul 17 2018, 06:08 PM
Alapone   Thanks for all the input guys> I will post pics...   Jul 18 2018, 06:35 AM
era vulgaris   Hey guys, I am having a 2270 built, 78mmx96mm. ...   Jul 18 2018, 08:27 AM
Alapone   I decided on the 45s based on some research done h...   Jul 18 2018, 10:21 AM
era vulgaris   I decided on the 45s based on some research done ...   Feb 7 2019, 08:21 AM
cgnj   I decided on the 45s based on some research done...   Feb 7 2019, 09:22 AM
yeahmag   You want 45's. There is a formula for single c...   Jul 18 2018, 10:35 AM
hedfurst   I ran 45s with my 2270. It was good! Have them...   Jul 18 2018, 01:33 PM
ottox914   9.5 on my 2056. Oil temps seem reasonable. CHT/EGT...   Jul 24 2018, 09:29 PM
Mark Henry   Bump it up that cam needs at least 8.8 to 9.0CR t...   Jul 24 2018, 10:27 PM
Bsherrard   Andrew - curious what you ended up going with for...   Dec 26 2018, 11:54 AM
MarkV   My DRLA 40's came with 28 vents and I sourced ...   Feb 7 2019, 09:30 AM
yeahmag   I don’t know anything about them, but EMPI has r...   Feb 7 2019, 09:35 AM


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