Ya Know... This engine is IN my first love , a 1975 Jeep CJ5. I should have said I THOUGHT I heard knock, but this was after I had punched it from 0 to 50 , saw the first boost indicator and then punched it again, the second boost indicator came on , & she went up to 75 MPH ! CJ5 's are not designed to go that fast ! !! I will NOT do that again , Brother. Bothered me enough to know it did not sound right .
Anyway , she always starts right up , Idles a bit high, but then comes down and stumbles slightly , but never stalls. Then after a minute or so, I drive & she goes pretty smooth, shifts well, all around the 40 mph streets. Temp stays at ~ 175 . I'll then get on the parkway, normal acceleration, The stock digital 2.5 boost indicator comes on between 2nd & 3rd gear , untill about 55 mph. . she thens cruise along between 55 - 60 pretty Good & also when i put on the Cruise Control. Yesterday , was 87 degrees out , steam bath muggy too. I think that's part of the high idle temp, when i plugged in my ALDL diagnostics . I gonna get a on the road log, today , monitoring how I plan to DD her. OH yeah, She gets nothing but 95 octane. Thanks Joey.