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Old 06-19-2013, 06:42 PM
svxwilson svxwilson is offline
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Join Date: May 2013
Boat: Ski Brendella, Super Comp, 1991, 351 Windsor
Location: Montana
Posts: 210
Problems Getting New Longblock running

Ok I have got the new longblock installed and my mechanic is having issues getting it to run. He originally ran with the factory firing order and it would not run. He tried a couple other firing orders that all did not work. He did a pop test and used the order from that and got it to run but only on 4-6 pistons. It would idle but very ruff.
My mechanic has done many boat engine swaps but never a reverse rotation such as this. He is aware and has educated himself in the reverse rotation motor and what makes it different.
He has a different carb he is going to put on it that he knows is good to test and see if that isn't needing a rebuild. Being a dumb *** when I took the intake off I decided to "inspect the carb" by inverting it over my head, and proceeded to take a gasoline bath.
Longblock should be good. Has a 7 year warranty. He did have to loosen the nuts on the valve springs because when it was at top dead center some were still tight.
Piston 1, and 8 are definitely working on almost all the firing orders.
2-4 of the pistons are doing nothing in all the different firing orders.

Any other ideas???
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Old 06-19-2013, 07:10 PM
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Table Rocker Table Rocker is offline
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Join Date: Oct 2010
Boat: '96 ProStar 205, Sammy Duvall, LT-1
Location: Fayetteville, Arkansas
Posts: 1,948
Weren't Ski Brendellas standard rotation? Does your prop say RC or LC? The prop charts I have Googled show Brendalla as standard rotation.

(I know absolutely nothing about Ski Brendella boats)
'96 ProStar 205 SD LT-1
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Old 06-19-2013, 07:11 PM
silverblueBP silverblueBP is offline
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Join Date: Oct 2007
Boat: None
Location: Heartland
Posts: 247
Have you pulled the valve covers and hand rotated the engine, following the firing order of each cylinder? You get that and then set # 1 at TDC on the compression stroke. Note where the rotor is pointed and attach the plug wires to the cap. It's not that complicated when you break it down into each part.
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Old 06-19-2013, 07:39 PM
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petermegan petermegan is offline
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Join Date: Dec 2010
Boat: 2000 Matercraft Prostar 190, LTR330,powerslot,PP,heater
Location: South Australia
Posts: 477
Out of my league here but the raw water pump would be a give away for engine rotation and if following the firing order by watching the valves rock at TDC is too hard, I wonder whether putting plastic plugs in your spark plug holes and rotating the engine would be easier?? Has your 'mechanic' taken the rocker covers off, or is he just guessing? Have fun.
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Old 06-20-2013, 03:41 AM
svxwilson svxwilson is offline
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Join Date: May 2013
Boat: Ski Brendella, Super Comp, 1991, 351 Windsor
Location: Montana
Posts: 210
Engine builders gave us the wrong firing order. Did a pop test to find the correct firing order. Used that order and it ran great. Taking it to the lake Thursday.
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Old 06-20-2013, 07:46 AM
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thatsmrmastercraft thatsmrmastercraft is offline
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Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
Posts: 16,937
Perhaps an end to your struggles. Good luck on the water.




Originally Posted by Bouyhead View Post
Installed my carb that was rebuilt by thatsmrmastsercraft, Thanks Peter!! Hot or cold this boat starts and runs like it fuel injected.
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