Silencer Over 70
09-19-2002, 11:28 AM
#2
Member #9
Charter Member
Viper, I don't think there are or were any of us constantly running 70 or over. BillR might have touched 70 with some different prop but that would be it.
I think it takes a supercharger to get into the 70's.
I don't believe any of us had or have external steering. The boat gets a little squirrely at WOT so I am not sure how it would handle at 75 or more
I think it takes a supercharger to get into the 70's.
I don't believe any of us had or have external steering. The boat gets a little squirrely at WOT so I am not sure how it would handle at 75 or more
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Member of the Liquid Jungle
09-19-2002, 11:52 AM
#4
Registered
The best I have seen on gps is 65 spinning a 26P Bravo. I need to get the prop labbed to raise the RPMs. Lower one tab a little to stop the chine walking.. I do not have external steering. Boat is powered by a 496 HO.
09-19-2002, 12:35 PM
#5
OSO Moderator
Charter Member
I got just over 70 in my old 280. It was powered by a 502 and had K&N flame arrestor. I was using a 24P Hydromotive prop w/o a diffuser ring. The air was cool and I was running with the wind. The GPS speedo was just a tick over 70. I can't say that it was squirrely though; it would lean to the port a bit from prop torque.
I think" I could get 70 out of a 280 w/ a 496HO and a Hydro 24P pretty consistantly.
I think" I could get 70 out of a 280 w/ a 496HO and a Hydro 24P pretty consistantly.
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BillR
'00 Scarab Sport 302 CC
'02 Cigarette Top Gun TS
'02 PQ 340
'00 PQ 280
'98 Scarab 22
'97 Baja Outlaw 20
'72 Checkmate
'65 Glastron
BillR
'00 Scarab Sport 302 CC
'02 Cigarette Top Gun TS
'02 PQ 340
'00 PQ 280
'98 Scarab 22
'97 Baja Outlaw 20
'72 Checkmate
'65 Glastron
09-19-2002, 08:31 PM
#8
Guest
Posts: n/a
2000 280 w/ 502 mag K&N,Gil exh,MSD,ECM,fuel preasure reg.,bravo 26p finished by Bronson Hill, 20 gal. fuel,speedkote, 75 degrees, no wind, 6'' chop, by myself, skipped breakfast, 71.4 gps no external steering, tabs up, Very smooth. Before the prop was finished the ride was a little wild. Bronson Hill took a little pitch out and worked thier magic. The boat handels much better.
Chris
Chris
09-19-2002, 08:43 PM
#9
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Join Date: May 2002
Location: Deeee-troit!
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IMHO, if you're running over 70 mph in what is essentially a 27' boat, you need external hydraulic steering. My 280 ran a consistent 65 mph, and at that speed, the stock Merc steering about at it's limits.
As always, YMMV...
As always, YMMV...
