I don't get nearly the performance boasted by other users of the 3.0l Mercruiser conversion.
I'm hard pressed to maintain 55mph (3000rpm) on the flats and have to drop to 2nd on some hills. In other words about what a LR 2.25l might offer. The gas tank also seems to empty rather quickly, though it's been awhile since I've actually calculated it.
This is the non-cross flow model in a maybe heavier-than-average 109 (winch, winch bumper, extra fuel tank, etc). 3.8 R&P give me an engaged overdrive-like gear ratio.
I've done or checked anything I know to. Trying to capture more power through timing quickly results in detonation.
Compression was 140, 120, 140, 150. I poured a little 30 weight into that #2 cyl and it's compression reading increased to 170.
Are those compression numbers suspect? What other things might I consider?
Thank you for your time--
Kind regards, Josh
I'm hard pressed to maintain 55mph (3000rpm) on the flats and have to drop to 2nd on some hills. In other words about what a LR 2.25l might offer. The gas tank also seems to empty rather quickly, though it's been awhile since I've actually calculated it.
This is the non-cross flow model in a maybe heavier-than-average 109 (winch, winch bumper, extra fuel tank, etc). 3.8 R&P give me an engaged overdrive-like gear ratio.
I've done or checked anything I know to. Trying to capture more power through timing quickly results in detonation.
Compression was 140, 120, 140, 150. I poured a little 30 weight into that #2 cyl and it's compression reading increased to 170.
Are those compression numbers suspect? What other things might I consider?
Thank you for your time--
Kind regards, Josh
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