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-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   Distributor Gear Failure on 454 Mag EFI (https://www.offshoreonly.com/forums/general-q/25280-distributor-gear-failure-454-mag-efi.html)

veloc410 10-16-2017 11:56 AM
Originally Posted by caldera (Post 4588076)
Attachment 571514

Total lost. Broken camshaft, pistons, block too also damaged crankshaft....

I need a new engine. I will post serial number, maybe someone knows where i can find same one.
Caldera,
When and if you get your boat rinning, pls get a gps chartplotter. You can even get an app for your tablet or cell phone. Navionics U.S and Canada works very good as long as you have reception. There are plenty of used chartplotters out there for sale also. What happened to you was bad but it could have been much worse. Not being sarcastic or demeaning in any way Just looking out for ya. Pete

dereknkathy 10-16-2017 12:59 PM
Originally Posted by veloc410 (Post 4588227)
I am so glad I have bravos. He has transmissions right. Can one be reversed. Then both engines coulbe standard. Life would be easier. Dont know much about the transmissions
Nope. Velvet drives run same direction as their engine. Many newer types can be reversed, but not that one. Some borg gear reductions run opposite output from input, but they don't make the same ratio in both output rotations. My trannys in the hatteras are that way. Engines turn in, props turn out, so my opposite rotation engine is on diff side than most.

veloc410 10-16-2017 01:11 PM
Originally Posted by dereknkathy (Post 4588252)
Nope. Velvet drives run same direction as their engine. Many newer types can be reversed, but not that one. Some borg gear reductions run opposite output from input, but they don't make the same ratio in both output rotations. My trannys in the hatteras are that way. Engines turn in, props turn out, so my opposite rotation engine is on diff side than most.
Hopefully he didn't do damage to the tranny. There has to be more to the boat also . He did hit something .correct

veloc410 10-16-2017 02:07 PM
Originally Posted by Bayley (Post 3145738)
Wow, way to bring back a post from the past. ;)

Thanks for the update though. I've been contemplating replacing the dizzys with MSD units for a while now, but have otherwise been running stock MerCruiser distributors.

FWIW: I replaced the bronze gear with a factory replacement gear and haven't had any problems in 8 years. :)
If you have high oil pressure, heavy weight oil and get on plane before the engine is warmed up. It Wil eat the gears. When you install the new gear, it will most likely need to fit for proper play between the dist housing wear plate and gear face. .010 is the gap most use and need. I removed over .010 on my new gear to get the gap right. Mine was melonized gear. Mallory, msd, gm.

dereknkathy 10-16-2017 02:41 PM
Originally Posted by veloc410 (Post 4588255)
Hopefully he didn't do damage to the tranny. There has to be more to the boat also . He did hit something .correct
I am not sure. He pulled engine with boat in the water still. We will know for sure when the prop is there to see. I think mebbe engine let go and he mistook the noise-vibration for using prop as a depthfinder...I really doubt hitting bottom can snap 2 rods like that. If it did, prop will probably be seriously trashed. Those back 2 rods just look like the bearings failed at speed and snapped them.

caldera 10-16-2017 06:56 PM
Originally Posted by snapmorgan (Post 4588143)
I have installed dozens of Jasper engines in cars, FedEx trucks and boats. I even put one in my mothers boat a couple of years ago. Have never had a complaint or a warranty claim. I believe they are probably the best stock rebuilder out there.
Yep im goingto take engine from jasper.

caldera 10-16-2017 06:58 PM
Originally Posted by fbc25el (Post 4588204)
It looks might of got some water in the cylinders and hydrolocked and broke the rods.
Maybe because cylinder head gaskets were killed.

caldera 10-16-2017 07:04 PM
Originally Posted by veloc410 (Post 4588238)
Caldera,
When and if you get your boat rinning, pls get a gps chartplotter. You can even get an app for your tablet or cell phone. Navionics U.S and Canada works very good as long as you have reception. There are plenty of used chartplotters out there for sale also. What happened to you was bad but it could have been much worse. Not being sarcastic or demeaning in any way Just looking out for ya. Pete
I didnt hit bottom. I realize that i was wrong. I was on same place with another boat to check how deep is the channel.. looks like engine had problem and that's why blew. This is my opinion.

veloc410 10-16-2017 07:23 PM
Originally Posted by dereknkathy (Post 4588252)
Nope. Velvet drives run same direction as their engine. Many newer types can be reversed, but not that one. Some borg gear reductions run opposite output from input, but they don't make the same ratio in both output rotations. My trannys in the hatteras are that way. Engines turn in, props turn out, so my opposite rotation engine is on diff side than most.
So the konrads 540 would need the right trannies to get them spinning in .? They are controlled by transmission I've heard.

caldera 10-16-2017 07:28 PM
Im not sure about another engine now. How to avoid same problem? If leftside was ****@up maybe right side is also in bad condition.


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