Jump to content
HybridZ

Multiple engines


Guest TeamNissan

Recommended Posts

Guest TeamNissan

I'm curious to know whats involved in running 2 or more engines in unison. Lets say inline like those insane tractors they have. Links to good reading and advice is all I'm looking for.

 

Lets say you linked 2 identical v8's together. Could you run it as a v16? With w/e ecu is needed. Or is it you have to run them with a ecu each?

 

Do you need to run anything between the 2 engines to keep one from damaging the other? Or anything to keep the one from unbalancing the other?

 

Idk I have a million questions. Maybe one of the more knowledgeable members who enjoy typing could chime in? cof cof braap cof

Link to post
Share on other sites

Do a search for the company that was using dual northstar motors in the cadillacs. I think it was the eldorado. They used dual auto trannies and relied on the torque converters to make up the small difference in RPM that the motor might be seeing. I always thought it was kind of cool.

 

Evan

Link to post
Share on other sites

2-Ivo4.jpg

http://www.legacydiecast.com/xq/asp/id.GMP1800809/qx/review.htm

http://www.twotogo.homestead.com/TommyIvo.html

 

Here's how they connected 2 Buick V8s by meshing the ring gears and running one backwards. One transmission required (per pair of engines).

 

I think those exotic pulling tractors use gear boxes and multiple in-out links to combine down to one common clutch or TQ converter.

 

I have read about a silly home-built pulling tractor that had 8 Briggs & Stratton lawnmover engines connected together by chains to a common shaft. Cumulative horsepower was about 24hp. Since they are all "hard" connected they all run at the same speed, even though each has a separate fuel and ignition. One engine is started (with an electric starter motor, can you imagine pulling 8 by hand?) and turns the other 7 over until the ignitions are switched on.

Link to post
Share on other sites
  • Administrators
Could you run it as a v16? With w/e ecu is needed. Or is it you have to run them with a ecu each?

 

A single competent EMS, with careful planning, could conceivably run both simultaneously. However, there's no doubt you'd get better results with two separate systems, especially if you choose a lower end EMS.

Link to post
Share on other sites
  • Administrators

Team Nissan..

How did you know that I couldn’t resist this thread? I’m no expert, especially in this sort of a project. Entertaining for sure. Immediately, the Hartley came to mind… OOohhhh. I wonder if they could produce a crankcase as one V-16 instead of two separate engines? It would fit nicely under the hood of a Z .

 

Now that twin engine car that Mardukes father drives is WAY FRIGGIN COOL! Maybe he’ll dig up some pics and share more with us? (hint hint..) wink.gif

 

Back in the ‘90’s there was a gentleman who was a very gifted welder and welded 2 SBC, blocks, cranks, heads etc together, but he took the time to do it in such a way that the block and heads looked as if they were cast as a V-16 SBC. I think HOTROD magazine did a write up on it at one time. Any how, here is that engine today. I guess he built two of them..

 

http://www.museumofamericanspeed.com/Collections/Engines/AllAlphaE002.shtml

 

 

Here is a tractor puller with a pair of rotaries linked together. I can’t seem to find the picture of the coupling itself, (buried somewhere on my hard drive), but it essentially is a pair motorcycle sprockets, one on the back of one engine and the other sprocket on the front of the other engine, and a double row chain around them as the coupling. Looks simple and functional.

 

TWINROTOR.jpg

 

 

Here is a video of two SBC’s in a Street Rod running..

 

Link to post
Share on other sites
Guest TeamNissan

Wow, I didn't expect so many replies so quickly, thnx.

 

I bring it up because it seems to me more people would be interested in it for a bunch of reasons. I'm sure I will get flames for even saying it "ow lbs, upkeep, fuel etc..." Doesn't running 2 3 rotors in a row interest anyone? In stock form making putting out a 600hp power plant. What about 2 Aprilia v4s? 1.8 v8 that can easily break 10k rpms, easy to rebuild, lite on gas, tiny. Idk I'm just throwing out ideas that strike me......

 

This is really interesting

 

motorcycleenginebasedv124fc.jpg

Link to post
Share on other sites
Guest TeamNissan

Haha, braap you beat me.

 

That linkage that you describe is exactly like the ones I have seen. I wonder what happens to the energy thats divided between the 2 though? I'm not sure how the physics on that work but I'm def interested to know.

 

That v16 is amazing.

Link to post
Share on other sites
Back in the ‘90’s there was a gentleman who was a very gifted welder and welded 2 SBC, blocks, cranks, heads etc together, but he took the time to do it in such a way that the block and heads looked as if they were cast as a V-16 SBC. I think HOTROD magazine did a write up on it at one time. Any how, here is that engine today. I guess he built two of them..

 

http://www.museumofamericanspeed.com/Collections/Engines/AllAlphaE002.shtml

 

 

I've seen that motor. Way, way cool! It's at SpeedWay Motors here in Lincoln. When the guys built it they ground all the welds flush then went over them with a punch and hammer to stipple the metal to look like it was cast. Simply amazing.

Link to post
Share on other sites
Ah, air cooled bike engines.. you mean like this 48 cylinder bike?… gh.gif

I think I got these pics from Ron. If he sees them maybe he’ll chime in the details and specifics on this monster..

 

Here's a link with more pictures, a description, and a video at the top.

 

http://www.bigbikeriders.com/48cyl.htm

Link to post
Share on other sites
  • 1 year later...
I can’t seem to find the picture of the coupling itself, (buried somewhere on my hard drive), but it essentially is a pair motorcycle sprockets, one on the back of one engine and the other sprocket on the front of the other engine, and a double row chain around them as the coupling. Looks simple and functional.

 

Likely a Dodge or Browing Chain Coupling. They can handle torque and speed when they get bigger...

 

http://www.emerson-ept.com/eptroot/public/prod/standcoupl/chain.htm

 

Sorry, couldn't get the Dodge photo to show up...

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...