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Forum: TECH TALK Topic: Merc 60 APX |
Roflhat |
Posted: March 5th, 2024, 6:53 am
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Replies: 9 Views: 502
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If they made a proper engine that was lightweight and shortshaft I'd definitely be interested for my thundercat |
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Forum: TECH TALK Topic: Merc 60 APX |
Roflhat |
Posted: March 4th, 2024, 9:12 am
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Replies: 9 Views: 502
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Forum: TECH TALK Topic: Merc 60 APX |
Roflhat |
Posted: March 4th, 2024, 9:10 am
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Replies: 9 Views: 502
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247 lbs? 112kg. Not what I would call lightweight, I don't think they're even trying. Tohatsu 20hp 4 stroke is 43kg, could almost have 3 of them and be the same weight as the merc 60. That's 3 gearboxes, legs, transom brackets etc. I'm sure if Mercury really wanted they could make a 60hp 4 stroke su... |
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Forum: TECH TALK Topic: o-rings vs. gasket for cyl head |
Roflhat |
Posted: February 25th, 2024, 11:44 am
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Replies: 3 Views: 268
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The TSR head I ran on my tohatsu 50 kept leaking with the O rings, although I've had issues with bad head gaskets that were aftermarket never had issues with genuine Yamaha ones |
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Forum: TECH TALK Topic: What’s Happening With The 70CES Yamaha? |
Roflhat |
Posted: February 9th, 2024, 12:56 pm
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Replies: 15 Views: 1428
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Would love to try a Yam 90 short on my thundercat. Always keep an eye out for cheap bits to put one together but they don't come up often. In reality the 70ces I have now is more than enough power 99.9% of the time. Anything other than going for a speed record I don't even use full throttle |
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Forum: PROPS FOR SALE Topic: 13 spline cleavers |
Roflhat |
Posted: February 9th, 2024, 12:47 pm
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Replies: 0 Views: 803
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Got a couple 13 spline cleavers for sale
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Forum: TECH TALK Topic: What’s Happening With The 70CES Yamaha? |
Roflhat |
Posted: January 22nd, 2024, 7:52 am
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Replies: 15 Views: 1428
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Yep smallest cc top chamber then increasing towards the bottom. Have to say I'm not 100% on the port specs as Rolf did the porting work over in Norway. I was running to UIM spec, not any more as I have the 90hp carbs on and a few other trick bits like reed block stuffers. But over here they really d... |
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Forum: TECH TALK Topic: What’s Happening With The 70CES Yamaha? |
Roflhat |
Posted: January 22nd, 2024, 7:47 am
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Replies: 15 Views: 1428
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Rolfs knowledge never ceased to amaze me, he hand't worked on a 70ces since the 90's but knew all the port specs, timings, flywheel weight even the resistance of the ignition coils under the flywheel to the nearest ohm. Was always grateful for how much time he gave me, think he could tell I was as p... |
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Forum: TECH TALK Topic: What’s Happening With The 70CES Yamaha? |
Roflhat |
Posted: January 18th, 2024, 3:34 pm
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Replies: 15 Views: 1428
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Genuine Yamaha head gaskets are the only ones worth running. TSR use o rings which is a good concept but they're hopeless in practise, less than 10 hours on mine and water was getting into the head. TSR head is no good in my opinion. Have run the one piece, two piece, TSR head eventually got fed up ... |
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Forum: PAST EVENTS Topic: Marino Swing Cup...Boat Racing ...Finland |
Roflhat |
Posted: December 2nd, 2023, 5:52 am
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Replies: 3 Views: 5565
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Some of the motors are pretty wild, the rules state the motor has to have the standard cowling but any mods under it are allowed |
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