2270 build, 2270 compression question |
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2270 build, 2270 compression question |
Alapone |
Jul 16 2018, 07:26 PM
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#21
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Member Group: Members Posts: 108 Joined: 4-April 13 From: Nj Member No.: 15,734 Region Association: None |
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 |
Mblizzard |
Jul 17 2018, 08:51 AM
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#22
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
Mine is at around the high side of 8.7. Still working out the fine tuning on the FI and had a few setup issues during the dyno testing. But without pushing super hard it this got me a max of right at 114 HP and 125 ft/lb of torque. Running premium 100% gas.
Even with external oil cooler still had some heat issues. Been adjusting the timing table in the cruise zones and seeing it drop quite a bit. At this point, with those numbers it is fun to drive and has not demonstrated any really bad tendencies toward detonation or pinging. |
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