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marinesracing
11-08-2009, 11:45 AM
I have a ChrisCat with twin 3.0 Pro Mags, 300HP. I want to get a little better maintenance (three sportsman lowers in two years), I don't really care about slowing down a little. There are two ads for Johnson V8 275HP 300GT motors, would it be smart to put these on my boat, and what would the downfalls be?
Thanks, Ron Luks
D.B.S
11-08-2009, 12:16 PM
You are joking?
Jay Smith
11-08-2009, 12:19 PM
Don't think you would be happy.

JMO...
Jay
HStream1
11-08-2009, 01:17 PM
Big Mistake. JMO though. Just currios? What going on with the Sportmasters?
STV_Keith
11-08-2009, 01:42 PM
As mentioned, don't think you'd be happy. I'm an OMC V8 guy and I'll tell you you'd be moving away from reliability and picking up more weight. Heck, I've even converted the two V8's on my Scarab to run Merc CLE's rather than the stock OMC gearcases.
DerStream
11-08-2009, 01:52 PM
Stay with your Merc's.
HStream1
11-08-2009, 02:07 PM
As mentioned, don't think you'd be happy. I'm an OMC V8 guy and I'll tell you you'd be moving away from reliability and picking up more weight. Heck, I've even converted the two V8's on my Scarab to run Merc CLE's rather than the stock OMC gearcases.

:thumbsup::thumbsup: Now thats being straight up and honest. Kudo's to you. :cheers:
j_martin
11-08-2009, 03:27 PM
Get some real help. What's happening to the sportsmasters?
Fish
11-08-2009, 03:53 PM
ditto to the above, and also what j. martin said. do you leave the water much with rpm's up? .
crazyeights
11-08-2009, 07:33 PM
As mentioned, don't think you'd be happy. I'm an OMC V8 guy and I'll tell you you'd be moving away from reliability and picking up more weight. Heck, I've even converted the two V8's on my Scarab to run Merc CLE's rather than the stock OMC gearcases.
Hello..What had to be done to covert your V8s to CLE gearcases?
STV_Keith
11-08-2009, 08:05 PM
It's all in this thread: http://forums.screamandfly.com/forums/showthread.php?t=117768
marinesracing
11-09-2009, 12:28 PM
After talking to a few people, I did let the props come out of the water without throttle usage too many times and I was told I was shifting them too much when docking, I was using the outboards like the inboards on my last boat. I still need a RH 1.75, 20", I have decided to keep the 3.0's, low hours, good compression, and learn to drive the Cat right, it seems after two years I should know.
Thanks for all the input, I know why now the good prices on the V8's.
Thanks again, Ron Luks
donmac
11-09-2009, 04:47 PM
that hull will handle the weight of the v8's no problem.if you have the money to get them massaged the mercs won't run with them.
JrCRXHF
11-09-2009, 04:54 PM
V8's are great as stated before it is a much older motor with more problems. The V8 the gear case is weak spot even though they run them on the 454 and 502 big blocks but they don't like to be surfaced.

I think that the OMC V8's are cheaper to run but you already have the merc's so why back date the boat.

But the V8 does sound better :P