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Forum: General Boating Discussion

07-07-2010, 05:38 PM

Replies: 9

Forward planing 4 P21

Views: 1,736

Posted By Burty

Wacky Racer had a 300xs on a P21 for a season,...

Wacky Racer had a 300xs on a P21 for a season, i'm sure he can explain better than me but because you effectively lose 2000rpm (8000 2.5 to 6000 300xs) you have to spin a much bigger prop and as you...

Forum: General Boating Discussion

06-07-2010, 06:22 PM

Replies: 9

Forward planing 4 P21

Views: 1,736

Posted By Burty

a well set up P21 with a 200hp merc (old school,...

a well set up P21 with a 200hp merc (old school, ie. not a new heavy engine)should see 70mph if you twin it with same motors i'm guessing 80mph single 2.5 260 / 280 and you should see 80mph anyway or...

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