Support Knowledge Base - Inboard engine builds

About inboard or outboard motors.

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Denon Osterman
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Re: Support Knowledge Base - Inboard engine builds

Post by Denon Osterman »

That is seriously cool. A stroked V12 jag...talk about one of a kind! I bet it will sound glorious as well.

A quick update on my 454 build, I've got my cam specs nearly sorted as well - looking at:

286 adv int
294 adv exh
226 @0.050 int
234 @0.050 exh
.591" lift int
.601" lift exh
112° lobe sep

so that should be fun :D

I've also decided that I'm going to go forward with Holley Sniper EFI. Read lots of good things, LOVE that I can tune it with a laptop on my own (I know most people hate that about EFI, but as a an electrical engineer specializing in control systems...that's like the icing on the cake!), and at <$1000 it's barely more than a new marine 850 would be anyways! Of course, now I'm stuck trying to plan out my fuel system...which is proving to be quite a headache. I also still need to figure out what to do for ignition. The EFI can control the ignition but given it's a boat a tried and true HEI might be easier, cheaper, and more reliable.

It's been very tough to think about the boat this season as I'm stuck in snowmobile mode, it's one of the best winters in recent memory up in Ontario. But the tailpipes came in recently (see attached) and I just cleaned out the garage to start working on the engine...and bought a walking foot to try my hand at upholstery as well. So I'm back to thinking about boating, while still enjoying riding my sled for the rest of the winter. How lucky am I!
IMG_20181206_130358.jpg
Thanks,

Denon
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Mr Hot Rod
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Re: Support Knowledge Base - Automotive to marine conversion

Post by Mr Hot Rod »

What does is take to convert an automotive engine to use in a boat? Is it cheaper to find a marine engine and rebuild it?
We've compiled marine conversion info in this post.
You can save some money if you can find a used marine engine in running condition. We usually opt to rebuild from a good used block and prefer to use new performance parts for reliability. A considerable weight saving can be gained by substituting aluminum parts (bellhousing, exhaust manifolds, intake manifold etc).
Here's a parts list and possible sources :

Marine conversion kit Cooling Electrical
  • - Marine starter
    - Marine Alternator and alternator bracket to suit
    - Ignition Package (Hardin 620-6000)
    (Marine distributor, ignition control box with built-in rev limiter, high vibration coil, 8 MM helicore spark plug wire set, mounting bracket
Fuel system References
That's all for now ! I will be adding to this post in the future.

If you've marinized an engine and would like to share your knowledge, a post to this thread would be welcomed !

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Paul Kane
Kane Custom Boats Ltd.
Chelsea, Quebec

Building the Glen-L Hot Rod : http://www.kanecustomboats.com
Glen-L Hot Rod build thread
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Glen-L Boat Video Directory

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jenko
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Re: Support Knowledge Base - Inboard engine builds

Post by jenko »

long time coming but I finally bored and honed my cylinder block gapped rings miked crank modified seal area to fit neoprene lip seal instead of traditional rope wick style fitted bearings rods and pistons. Used plenty of oil on piston and ring whilst fitting and plenty of assembly lube on bearings when fitting crank and rods
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Mr Hot Rod
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Thread Update

Post by Mr Hot Rod »

<BUMP>

We've added an Index to this thread to improve navigation.
Information at our fingertips :)
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Paul Kane
Kane Custom Boats Ltd.
Chelsea, Quebec

Building the Glen-L Hot Rod : http://www.kanecustomboats.com
Glen-L Hot Rod build thread
Kane Custom Boats YouTube channel
Glen-L Boat Video Directory

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Deck planking & seams discussions
Last edited by Mr Hot Rod on Sat Jan 29, 2022 10:23 pm, edited 1 time in total.
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jenko
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Re: Support Knowledge Base - Inboard engine builds

Post by jenko »

have finished the stroked v12 old stroke 70mm new stroke 79.5mm (326 ci to 374 ci)
reason to do this not to go faster but to bring engine revs peak torque in line with 3 blade 12'' prop least slip at peak torque.
9.5 mm increased stroke bought engines peak torque from 5400 rpm to 4400 rpm .
Which enabled me to use a 15pitch 12'' prop rather than 12'' x 12'' prop and cruise at 1000 rpm lower with less noise and actually lower fuel consumption.
Surprisingly the boat does actually go faster and reaches 5500rpm the increase in pitch also reduced slip above 2000 rpm quite dramatically 30% down to 15% possibly a much better prop.
also engine bay still looks the same
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new inlet manifold.jpg
hoodman
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Re: Support Knowledge Base - Inboard engine builds

Post by hoodman »

That engine and boat remain works of art! Cheers, mate!
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139
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Mr Hot Rod
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Re: Support Knowledge Base - Inboard engine builds

Post by Mr Hot Rod »

Peter : Good to hear you're in the zone ! 4500 RPM is the sweet spot for a 12x15 cupped prop.

What is the Peak Torque and WOT HP/RPM/MPH ?

I'll send you a spread sheet from the Hot Rod's 355 SBC. Be great if you could gragh your prop data.
We run 70 MPH @4500 RPM {Peak Toeque} with an 11x15 custom labbed OJ prop.

Here's a link to our numbers : ____________________

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Paul Kane
Kane Custom Boats Ltd.
Chelsea, Quebec

Building the Glen-L Hot Rod : http://www.kanecustomboats.com
Glen-L Hot Rod build thread
Kane Custom Boats YouTube channel
Glen-L Boat Video Directory

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Last edited by Mr Hot Rod on Sat Jan 29, 2022 10:31 pm, edited 2 times in total.
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Mr Hot Rod
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EFI fuel system components - USCG Approved

Post by Mr Hot Rod »

If you have links to USCG Approved EFI fuel system suppliers, please post them in this thread.

Here'a a link for USCG Approved Fuel Line Hose : We'll be adding more links at a later date ...

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Paul Kane
Kane Custom Boats Ltd.
Chelsea, Quebec

Building the Glen-L Hot Rod : http://www.kanecustomboats.com
Glen-L Hot Rod build thread
Kane Custom Boats YouTube channel
Glen-L Boat Video Directory

Forum Support Knowledge Base
Last edited by Mr Hot Rod on Fri Feb 04, 2022 8:37 pm, edited 1 time in total.
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steveh41
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Re: Support Knowledge Base - Inboard engine builds

Post by steveh41 »

Beautiful job on the engine rebuild Pete… looks like the performance results were well worth the effort!

Regards,
Steve
The longest journey begins with a single step… then repeat as necessary!
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Mr Hot Rod
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Re: Support Knowledge Base - Inboard engine builds

Post by Mr Hot Rod »

Steve : Now that's what I call an avatar :D

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Paul Kane
Kane Custom Boats Ltd.
Chelsea, Quebec

Building the Glen-L Hot Rod : http://www.kanecustomboats.com
Glen-L Hot Rod build thread
Kane Custom Boats YouTube channel
Glen-L Boat Video Directory

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jenko
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Re: Support Knowledge Base - Inboard engine builds

Post by jenko »

Thanks Paul and Steve and Hoodman,I shall log some runs and stick the data in your spread sheet Paul ,btw I already have a copy :) ,
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kens
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Re: Support Knowledge Base - Inboard engine builds

Post by kens »

Is this the one you fabricated all your own manifolds?
That looks nice
WoW !
Oak..........the juice ain't worth the squeeze :D :shock: :o :)
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jenko
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Re: Support Knowledge Base - Inboard engine builds

Post by jenko »

Thanks Kens ,and yes I did fabricate the manifolds .
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Roberta
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Re: Support Knowledge Base - Inboard engine builds

Post by Roberta »

That is one SWEET motor.

Roberta
Roberta "Queen of the Boat Builders"
Built Zip "Oliver IV", Super Spartan "Jimmy 70", and Torpedo "The Glen L".
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jenko
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Re: Support Knowledge Base - Inboard engine builds

Post by jenko »

Thankyou Roberta :)
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