318/392 Stroker Motors

TinLizzy
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Location: Lake Superior-Michigan's U.P.

Re: 318/392 Stroker Motors

Postby TinLizzy » Sun Jan 14, 2018 9:40 pm

Trower, Give Acme Props a call. They will ask you for all of your boats info, then give you a recommendation. I also wanted to go to a 4 blade design, but they said that a 3 blade was the way to go for my 28. I will find out next summer. They also said that they can re-cup the props if they need a little tweaking for free.
Rodney
1975 28 Express-Twin 350 Chevy's, Raw Water cooled
Portage Canal Waterway-Upper Peninsula,Lake Superior

Trowerpower
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Location: Northern Kentucky

Re: 318/392 Stroker Motors

Postby Trowerpower » Wed May 09, 2018 6:19 pm

I have bad news, my port engine has blown a head gasket and possibly worse in the number 1 cylinder. Leak down test indicates bad news. Will pull the head Monday to confirm. Also, my engine builder did not use marine felpro gaskets. You can bett Ms. STARBOARD will get them soon with new head bolts. Ms. PORT will will run but on seven cylinders. The plugs were rich, no sign of detentation or aluminum particles in the bad cylinder. Bummer! We will repair it and be back in business soon. Compression tests do not indicate high pressures all around 150psi in both motors. :o
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set

honestcharlie56
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Location: Lake Charles, LA

Re: 318/392 Stroker Motors

Postby honestcharlie56 » Thu May 10, 2018 4:14 am

NOOOOO, hate to hear that!! If you have closed loop cooling do you really need the felpro marine gaskets?
1990 Marinette 32 Sedan Flybridge "Hubba" Lake Charles, LA
Twin Chrysler 318's

Fastjeff
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Re: 318/392 Stroker Motors

Postby Fastjeff » Thu May 10, 2018 7:15 am

Damn! I hope you didn't fire slot the block and head.

Good luck.

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington

Trowerpower
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Joined: Sun Dec 07, 2014 8:50 pm
Location: Northern Kentucky

Re: 318/392 Stroker Motors

Postby Trowerpower » Sat May 12, 2018 4:56 pm

Pulling the head on Monday May 14th. Maybe I will get lucky, a valve issue. No closed cooling.
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set

Trowerpower
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Posts: 128
Joined: Sun Dec 07, 2014 8:50 pm
Location: Northern Kentucky

Re: 318/392 Stroker Motors

Postby Trowerpower » Sat May 12, 2018 5:01 pm

On props I have two four blade props from Delta propeller to try, do not recall the size at the moment. They are Acme Props. Delta Propeller was Marinettes supplier of props back in the day.
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set

TinLizzy
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Posts: 116
Joined: Mon Jan 19, 2015 11:07 pm
Location: Lake Superior-Michigan's U.P.

Re: 318/392 Stroker Motors

Postby TinLizzy » Sat May 12, 2018 10:56 pm

I am pretty sure that big M's came stock with Michigan Wheel props. Acme uses a different blade design than the old Dyna Jet props.
Last edited by TinLizzy on Sun May 13, 2018 11:56 am, edited 1 time in total.
Rodney
1975 28 Express-Twin 350 Chevy's, Raw Water cooled
Portage Canal Waterway-Upper Peninsula,Lake Superior

Trowerpower
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Posts: 128
Joined: Sun Dec 07, 2014 8:50 pm
Location: Northern Kentucky

Re: 318/392 Stroker Motors

Postby Trowerpower » Sun May 13, 2018 10:05 am

Delta Propeller sells a number of brands of props including Michigan Wheel props. Delta Propeller is located in Cleves, Ohio west of Cincinnati,Ohio.
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set

pbaker32s
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Joined: Fri Aug 22, 2014 10:30 am

Re: 318/392 Stroker Motors

Postby pbaker32s » Sun May 13, 2018 11:11 am

Those acme props will work well on your boat. They should be 15x15.75. My buddy runs 34mph in a 32 fly bridge sedan loaded w/ factory gen set and stock 360’s. You should be able to turn them up more rpm’s and see increased speeds.

Trowerpower
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Location: Northern Kentucky

Re: 318/392 Stroker Motors

Postby Trowerpower » Mon May 14, 2018 8:54 pm

Well we pulled the heads today on Ms. PORT to find the head gasket blown on no.1 and no.2 cylinders but no piston, block, or head damage. The headbolts untorqued at 55 ft. Lbs.. they did use felpro gaskets but not their marine gaskets. So we are cleaning everything up and reinstalling with marine gaskets and new"ARP" head bolts and torque everything to the chrysler marine service manual spec.will perform a ptessure test after installation of the heads to make we are good. Thank you Lord, the motor does not have to come out.
Trower Power
1987 32ft Marinette Sedan Flybridge
Blue Sky
twin 392 Chrysler Stroker Motors
Performance Distributors
750 Edlebrocks
fresh water cooled
1.5 to 1 velva-drives
Onan 6.5kw gen set