Author Topic: Hercules 4cyl diesel... who knows about it?  (Read 690 times)

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Online mttaff

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Hercules 4cyl diesel... who knows about it?
« on: August 27, 2012, 06:16:26 AM »
There is a Hercules 4 cylinder diesel available here locally. Im curious if anybody knows much about them. My guess is that parts are hard to find. Im not a diesel guy but seems like a cool motor with 727. Seems like it would be underpowered for a truck but what about an rc? Just curious what you guys know.
78 crewcab,      d60's,        6" lift and 35's                    
84 crewcab,      d250,         no motor and no plan yet
76 ramcharger, d60's,       6" lift and 35's
90 d250 cummins, 5 speed
04 jeep tj,  4" lift and 35's

Offline sls001

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Re: Hercules 4cyl diesel... who knows about it?
« Reply #1 on: August 27, 2012, 06:29:06 AM »
I believe there are several different sizes.  Do you know which one it is?  Most I've seen where on generator's, marine applications, equipment, etc and very low HP.

Online mttaff

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Re: Hercules 4cyl diesel... who knows about it?
« Reply #2 on: August 27, 2012, 07:00:34 AM »
3.7 with 727 tranny
78 crewcab,      d60's,        6" lift and 35's                    
84 crewcab,      d250,         no motor and no plan yet
76 ramcharger, d60's,       6" lift and 35's
90 d250 cummins, 5 speed
04 jeep tj,  4" lift and 35's

Offline 85 Royal SE Prospector

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Re: Hercules 4cyl diesel... who knows about it?
« Reply #3 on: August 29, 2012, 06:11:01 PM »
An RC is heavy. If it would be underpowered cruising for a truck, it would be for an RC too.
1985 Dodge Royal SE Prospector Ramcharger 318 4x4

BigDaddy99HD

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Re: Hercules 4cyl diesel... who knows about it?
« Reply #4 on: September 2, 2012, 11:38:10 AM »
Could always fab a turbo onto it  ;D

Offline Tman

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Re: Hercules 4cyl diesel... who knows about it?
« Reply #5 on: September 2, 2012, 04:02:41 PM »
I'm not familiar with that engine.  Is a 3.7 around 220 cubic inches?  How much horse power does it have?

It would probably pull an RC down the road, but it would probably be a SLOW ride!!!  I believe the international scouts had a small factory diesel available back in the 70's.  I know a guy who drove one about 25 years ago.  He said it was painfully  slow.  Having a vehicle that was slow by 1980's standards would be even worse today!

Now that little diesel may make sense to swap it into a smaller vehicle.  It would need to be light weight though.  Of course, it it is strong enough to take some boost.....you could install it in a heavier vehicle.
1985 Dodge D-150 pick-up.  360, 727, 8 1/4 axle.  Royal, Prospector, & SE packages.   Looks stock
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Offline Captain Obvious

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Re: Hercules 4cyl diesel... who knows about it?
« Reply #6 on: September 2, 2012, 04:50:30 PM »
If it has a turbo it could be worth it. Similar power to a 318 or cummins 4.

If it doesnt have a turbo, probably not worth it. Turbo is only a benefit if it can blow dirty smoke at wot. Smoke is the rich lean indicator with "perfect" being a slight haze.

If it blows clean without a turbo, the extra air does nothing but blow out the exhaust. Would have to add more fuel, which is usually done with a different injection pump and injectors. Unfortunately not only can this get expensive, but maybe unavailable for obscure engines.

A lot of people try to use throttled gasoline knowledge in a throttleless timed injected engine. More fuel-more power UNTIL you hit the black smoke limit and have no more excess oxygen left to consume fuel.

 

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