Recent content by bigtwin

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    Too much compression?

    Last boating season I had to repair damaged spark plug threads on my 98 Evinrude 25hp twin cyl., Since I had the head off, I decided to have the head machined .030". I noticed the extra power first time out afterwards, and I was told at the machine shop, that machining the head .030" should only...
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    can't keep my plug inserts tight

    I have a 1998 Evinrude 25hp twin cylinder. Awhile back I noticed both of my spark plug threads were starting to strip, so I used a thread chaser to clean the threads, however this only woked for a little while before more drastic action had to be taken. I then went to Napa and purchased a...
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    Too much cup???

    I have a 14 1/2 foot alum. semi vee fishing boat, it weighs about 750 lbs (6gal. gas, 2 batteries, motor, trolling motor, and gear) It is powered by a 1998 25hp twin cyl. Evinrude (last winter I installed 30 hp parts) I am running a 10 1/8 X 15 Ballistic prop., the motor is mounted so the a/v...
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    I used the wrong oil

    On the way out to the lake the other day I stopped for fuel, I forgot to bring a bottle of oil from home with me, so I went inside and purchased a quart of Citgo Supergard sea and snow, and used it. I didn't realize that the oil I had used wasn't TCW certified, and is recommended for snowmobiles...
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    Raytheon L365 transducer

    A couple weeks ago I got caught out in 3 ft waves in my 14 ft boat on a lake in northren Minnesota, I was about 3 mi out from the landing, so my boat took a pounding. Dammaged my trolling motor bracket, livewell pump, ripped both battery hold downs from the floor, and broke my transducer. I...
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    Copper gasket sealant??

    I was reading a prior post stating copper head gaskets shouldn't be used with an aluminium head or block. last year I replaced the head gasket on my 1998 25hp Evinrude twin. During assembly I noticed the head bolts had sealant on them from the factory, so I cleaned them off and sprayed on fresh...
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    loss of speed with the cowl on

    I just purchased a 10 1/8" x 15" ballistic prop. for <br />my 98 25hp 2cyl. Evinrude. During testing the motor was turning 5440rpm at 31.5mph (gps) 13% slip. 15' semivee hull alum. fishing boat with full floor, live well, trolling motor, two batties, and 350lbs of fuel, gear and people. I do not...
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    differant carburetor?

    Last winter I found a steal of a deal on a Ballistic ss prop. on Iboats ($64.00) 10 1/8x15 for my 98 25hp 2cyl. Evinrude. I installed the prop. but the engine would only turn 4900 rpm, I raised the motor 1 inch I then replaced the stock reed valves with boyseen valves, I also picked up a 30/35hp...
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    May the real 25 horse stand up!

    Back in 98 I became the proud owner of a new 25 h.p. Evinrude 2 cyl. I was looking at the 3 cyl. at the time but decided it was'nt worth the extra $$ and the wait. Even though the 2 cyl. has served me well I always thought the 3 cyl. was more refined. I am now looking at the test wheel specs...
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