Cranking Compression Issue Resolved
Thread Starter
Melting Slicks
Joined: Apr 2000
Posts: 2,145
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From: Ft. Walton Beach, Fl USA
Cranking Compression Issue Resolved
I adjusted the #1 rockers which were loose. Redid #1 cylinder and it was 174, right in line with the other 7 which ranged from 170 to 179. Thanks for the help.
Someone mentioned that range was low for a performance motor. I used to have 190-195 with the XE262 but that cam had very different timing events. The intake valve was open for only 32 degrees and closed 7.5 degrees sooner (35 vs 42.5) on a 106 ICA. The ISKY is open for 44 degrees and closes at 42.5 on a 112 ICA. So it's just not going to build the same big cylinder pressure. Plus it's a 9.5:1 CR max.
Someone mentioned that range was low for a performance motor. I used to have 190-195 with the XE262 but that cam had very different timing events. The intake valve was open for only 32 degrees and closed 7.5 degrees sooner (35 vs 42.5) on a 106 ICA. The ISKY is open for 44 degrees and closes at 42.5 on a 112 ICA. So it's just not going to build the same big cylinder pressure. Plus it's a 9.5:1 CR max.
