I have a 1998 Champion 181, with a 150 Mercury xr6. 23 tempest and no jackplate. Compression is perfect, but at WOT I am only seeing 5100 rpm at 55 mph on gps. I’ve seen similar setups hit 60 no problem. Would a jack plate help get the extra 4-500 rpm I’m needing, or do you think its in the motor?
Your posting same question in every forum and you been getting same answer..
Bruce Phillips
1995 190 DC champion ......1995 200 xri merc
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Have you checked to make sure you are actually REACHING the WOT position at the throttle linkage, and that trigger is properly advancing to the full advance stop?
Compression Test?
Spark Test?
Fuel Quality/Delivery Tests?
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Jackplate will help get rpm up some, but like said above. Spark and fuel has to b confirmed before anything else, if you have a smaller prop maybe try it and see if you get more rpm and if so prob just sitting to deep
Not same engine but see below for specs on my Champion 181.
I have 1995 181dc with a Mercury 150XRi efi and run a Yamaha 23M prop.
6" jackplate
3 5/8" prop to pad
5600 rpms 61 gps
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Originally Posted by Bruce2
