| Author |
Message |
    
Mason Smailes
Visitor
| | Posted on Tuesday, January 18, 2005 - 10:16 pm: | 
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Hi all.I'm looking at buying a 55ft ex trawler with a 300hp(says owner) hercules model # DNX 6.
The herc won't start because the pre heat spark plug is worn down and not firing.
I would like to hear from anyone who knows about these big hercules,parts (esp champion j-9-604)availibility,common problems etc.Thanx. |
larry_from_maryland
Senior Member
Username: larry_from_maryland
Post Number: 192
Registered: 07-2003
| | Posted on Wednesday, January 19, 2005 - 05:45 pm: |
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I don't see that model number in my books.My champion book shows a J 99 plug/igniter thats used in furneses or in those old manifold heaters that threw flame into manifolds for diesel starting. |
mason smailes
Visitor
| | Posted on Thursday, January 20, 2005 - 04:03 am: |
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thanks for your info larry.the engine has a us navy control panel but the boat and i live in australia.see any model no's like it?
that sounds like the kind of pre heat system though.
is the j99 still availible from champion?
ps any chance your coming down under soon?maybe you could suss this machine out for me. ha ha. |
larry_from_maryland
Senior Member
Username: larry_from_maryland
Post Number: 193
Registered: 07-2003
| | Posted on Thursday, January 20, 2005 - 01:11 pm: |
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My champion book is only 5 years old so that should be available.Most of the herc models have the X in the middle,Like zxb,jxc,yxt.The closest thing i see is DIX and its only 100hp.When herc adds the 6 at the end of a model number they normally made a 4 cylinder version with the same bore and stroke.You may have to check the model munber again. |
Mason Smailes
Visitor
| | Posted on Thursday, January 20, 2005 - 07:57 pm: |
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no's on plate
Bureau of ships eng # 8769
eng #1050165
model DNX 6
Manufacturer D-N-X engine corp.(but has hercules cast in engine block.)I think engine may be ww2 era and is supercharged and intercooled. |
larry_from_maryland
Senior Member
Username: larry_from_maryland
Post Number: 194
Registered: 07-2003
| | Posted on Friday, January 21, 2005 - 12:56 pm: |
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Well i did find in another place DNX 8D 1468 ci,bore 6.25 stroke 6".Rated 244 continous hp or 340 maximun hp.Rated rpm 1600.all this for a non turbo engine. First made in 1947.But the DNX6 does not show in this book. |
mason smailes
Visitor
| | Posted on Sunday, January 23, 2005 - 04:22 am: |
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okay, thanks Larry |
ben pigneguy
Visitor
| | Posted on Wednesday, February 02, 2005 - 09:34 pm: |
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I have a Hercules DNX 6 on a 45ft wooden tugboat that is ex-navy. I have a few copied pages from a workshop manual relating to torque settings and valve clearances, and also injector pump timing that I got when I purchased the boat. Parts are almost impossible to come by. I have had advice from a few of the people that worked on them from the navy docks on Goat Island on Sydney harbour. The supercharger on these engines were chain driven, which led to a few problems ie. the chain broke. My engine had the supercharger removed. The fuel heater on my engine had been removed, but it does start after about half a minute of cranking. When I purchased the boat, the owner started it with the aid of aerostart, but this can be dangerous in large diesels as you can get some detonation and engine damage, and also the engine get addicted to it.I have been trying to get some spares for the raw water pump, but no luck as of yet. These engines when they run take a while to warm up, and will blow a bit of white smoke, this is probably due to no clearance on the valve when the engine is cold. They are also known to breathe a bit through the oil breather, and most have an external breather fitted to the engine room. They are rated at 300hp with the supercharger and have flat top pistons with expansion chambers on the port side of the engine. The starter motor is 32 volts, this was I think due to many of the army and airforce engines being 32 volts, and the engine is positive earth. If you want any of the workshop copies i can send you some. |
mason smailes
Visitor
| | Posted on Saturday, February 05, 2005 - 10:45 pm: |
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hi ben,
thanks for your post.are you in sydney?my partners and i went ahead and bought the boat anyway and the bloke who owned it had a us navy operation/service manual for the engine(cool).
i havent run engine yet due to poor battery power-just as well i got your info as i was about to wire up battery normal way.
anyway its good to hear from someone with the same chugger to bonce ideas off.
cheers
mason. |
edwin
New member
Username: edwin
Post Number: 1
Registered: 02-2005
| | Posted on Thursday, February 17, 2005 - 12:32 am: |
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I NEED PARTS FOR A CHRYSLER STRIGHT 8 1947 TO1953 MANIFOLD AND HEAD |
andrew
Moderator
Username: andrew
Post Number: 1047
Registered: 11-2001
| | Posted on Thursday, February 17, 2005 - 09:57 am: |
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Edwin,
You can post a wanted ad in our classifieds area. |
