 Has anyone ever made a 914/8 clone?, Or am I off my rocker? |
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| napasteve |
 Jan 16 2020, 12:26 PM
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#21
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914 driving winemaker  Group: Members Posts: 500 Joined: 2-January 13 From: Napa, CA Member No.: 15,327 Region Association: Northern California 
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If you are really thinking about fabbing 2 more cylinders onto an Lycoming IO-540, know that there is an flat 8 Lycoming already; the IO-720. Piper built 148 Comanche 400's using this engine. Hell of a plane.
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| SirAndy |
Jan 16 2020, 12:50 PM
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#22
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Resident German Group: Admin Posts: 41,607 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Mikey914 @ Jan 16 2020, 08:09 AM)  Anyone know what the displacement was ? http://www.914world.com/specs/prototypes.php (IMG:style_emoticons/default/shades.gif) As mentioned above already, you can weld together two /4 cases and make it a 4112 ... (IMG:style_emoticons/default/smash.gif) |
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| GregAmy |
Jan 16 2020, 01:04 PM
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#23
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Advanced Member Group: Members Posts: 2,268 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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QUOTE(napasteve @ Jan 16 2020, 01:26 PM) If you are really thinking about fabbing 2 more cylinders onto an Lycoming IO-540, know that there is an flat 8 Lycoming already; the IO-720. Piper built 148 Comanche 400's using this engine. Hell of a plane. Totally forgot about that one. They used it in the Pawnee Brave cropduster, too; bet there's a few of those in salvage yards somewhere... |
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| 914forme |
Jan 16 2020, 01:12 PM
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#24
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Times a wastin', get wrenchin'! Group: Members Posts: 3,896 Joined: 24-July 04 From: Dayton, Ohio Member No.: 2,388 Region Association: None
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Using the 911 Aluminum case as your base case would be better, independent cylinder heads, you would just need new crank, cams, cam towers, valve covers, gaskets, etc.....
But that puts you are 5.3 liters if you do it right. That is taking the 4.0L engine that is 0.666666666 liters per cylinder and multiplying it by 8. Yes @ClayPerrine engine has the number of the beast in ever cylinder. (IMG:style_emoticons/default/happy11.gif) I am sure now that Rod Emory is having his 911-4 engines built, the P.N.W. has a bunch of 1 cylinder case halves lying around. NOT! Rothsports builds the engine for Rod Emory @Cary (IMG:style_emoticons/default/shades.gif) I figure to get the 911-4 engines they put them in a big washing machine and wash them on hot, then transfer in the dryer for top secret number of minutes and it is shrunk to a -4 (IMG:style_emoticons/default/confused24.gif) Thats how it works for my jeans (IMG:style_emoticons/default/screwy.gif) |
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| Rav914 |
Jan 16 2020, 01:16 PM
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#25
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All-weather fan Group: Members Posts: 738 Joined: 15-April 07 From: WA Member No.: 7,669 Region Association: None |
How about a motor from the Ferrari 512BB? It's a flat 12 and makes similar power. Might be easier to find than a 908 motor. What a beast it would be....
Attached thumbnail(s) 
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| SirAndy |
Jan 16 2020, 01:27 PM
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#26
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Resident German Group: Admin Posts: 41,607 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Rav914 @ Jan 16 2020, 11:16 AM) How about a motor from the Ferrari 512BB? It's a flat 12 and makes similar power. Might be easier to find than a 908 motor. What a beast it would be.... If you go through all the trouble to make a tribute of the 914/8, you gotta use a motor that is based on a Porsche engine. Otherwise, it's just another conversion ... (IMG:style_emoticons/default/popcorn[1].gif) |
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| Bucci |
Jan 16 2020, 02:09 PM
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#27
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Bucci Group: Members Posts: 106 Joined: 11-August 08 From: Carlsbad,Ca Member No.: 9,407 Region Association: Southern California
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QUOTE(mepstein @ Jan 16 2020, 08:45 AM) It was the 908 race engine and 908 trans. Since the 908 was already mid engined, it fit really well - once Porsche moved the trunk firewall. Using an aircraft engine will be more work than Porsche had to do since you have to fit everything around the engine, adapt a trans, clutch, headers, etc. and then you don’t really see anything in a 914 engine bay. I do want to do a silver 914-8 tribute but just exterior and interior. I’ll be happy with a six in the engine bay. About 19 years ago I replicated the 914-8 Oil cooler opening when I shoehorned a 3.2 L Motronic motor into my car at home in my garage. As I cut the opening for the oil cooler on the factory sheet metal I was able to break bend a flap of metal backwards to add rigidity and I also was able to retain the factory tow hook underneath the trunk by adding vertical support ribs back onto the bottom of the trunk.  |
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| mtndawg |
Jan 16 2020, 02:09 PM
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#28
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Member Group: Members Posts: 413 Joined: 26-January 09 From: Granite Bay, Ca Member No.: 9,985 Region Association: None
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Maybe partner with Emory on an idea like this?
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| porschetub |
Jan 16 2020, 02:17 PM
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#29
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Advanced Member Group: Members Posts: 4,697 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Didn't someone in Europe do an 8cyl T4 many years ago ?.
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| Mark Henry |
Jan 16 2020, 03:49 PM
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#30
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(porschetub @ Jan 16 2020, 03:17 PM) Didn't someone in Europe do an 8cyl T4 many years ago ?. Yes (IMG:style_emoticons/default/smile.gif) There's a grainy vid of it on YT drag racing, there're pic's of it, but I don't have time to look. It's a guy in Sweden, 80's or early 90's I think it was in Hot VW's Magazine. |
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| rgalla9146 |
Jan 16 2020, 03:57 PM
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#31
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Advanced Member Group: Members Posts: 4,545 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None
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QUOTE(Mark Henry @ Jan 16 2020, 12:13 PM) Emerson Fittipaldi, flat 8 VW engine. https://jalopnik.com/emerson-fittipaldis-do...-beetle-5799726 Edit: correction, I was a bit off, this was two engines coupled together. The picture appears to be 2 1/2 engines welded together. That's some special welding. |
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| sixnotfour |
Jan 16 2020, 04:22 PM
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#32
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914 Wizard Group: Members Posts: 10,412 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains 
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QUOTE(Mark Henry @ Jan 16 2020, 02:49 PM) QUOTE(porschetub @ Jan 16 2020, 03:17 PM) Didn't someone in Europe do an 8cyl T4 many years ago ?. Yes (IMG:style_emoticons/default/smile.gif) There's a grainy vid of it on YT drag racing, there're pic's of it, but I don't have time to look. It's a guy in Sweden, 80's or early 90's I think it was in Hot VW's Magazine. https://oppositelock.kinja.com/if-vw-made-a...-vid-1637484786 |
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| Mark Henry |
Jan 16 2020, 04:24 PM
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#33
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(rgalla9146 @ Jan 16 2020, 04:57 PM) QUOTE(Mark Henry @ Jan 16 2020, 12:13 PM) Emerson Fittipaldi, flat 8 VW engine. https://jalopnik.com/emerson-fittipaldis-do...-beetle-5799726 Edit: correction, I was a bit off, this was two engines coupled together. The picture appears to be 2 1/2 engines welded together. That's some special welding. I thought they were welded but that article I posted said they were 2 engines coupled together. Also said it used weber carbs (IDA (IMG:style_emoticons/default/confused24.gif) ) that would have been fun to sync. |
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| sixnotfour |
Jan 16 2020, 04:31 PM
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#34
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914 Wizard Group: Members Posts: 10,412 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains
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Mueller found it... (IMG:style_emoticons/default/first.gif)
http://www.914world.com/bbs2/index.php?s=&...t&p=2155656 Attached image(s) 
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| IronHillRestorations |
Jan 16 2020, 04:35 PM
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#35
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I. I. R. C. Group: Members Posts: 6,714 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
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Cool idea, but there's some huge hurdles to overcome.
The 8 cyl engines were dual overhead cam, so welding together two pushrod cases doesn't make a lot of sense to me. Nor does a Lycoming, for reasons cited earlier, ie go through a lot of time, trouble and expense for an engine that'll turn a half the rpm's of a hot rod flat 6. If you really, really wanted to do that, it would be better to source a real Porsche flat 8, providing you want to trade in your King Air for an engine |
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| 914forme |
Jan 16 2020, 04:53 PM
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#36
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Times a wastin', get wrenchin'! Group: Members Posts: 3,896 Joined: 24-July 04 From: Dayton, Ohio Member No.: 2,388 Region Association: None
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People in the dirt country couple engines all the time. We make 1000s of HP with them.
Many ways of coupling two engines together and making it work. Drag racers did it back in the 60s also. Hell if you want, build it so it looks like it has 8 cylinders and run 6. Most people would never know. You can make it look it it has a 908 engine, use a program to match the recording via the rev range, and then run a couple of drill motors. If your going to do it, do it right get a Porsche engine, Or get some hunks of billet a 3D model of a 908 case, and a 5 axis CNC and start making some chips fly. Cylinders and heads are easy. 911 Parts. Model out the cam towers, and all the other odds and ends, CNC away. At that point make it better than it was. This is not rocket science, real question is how much are you willing to spend to build a tribute car? In a few months we could 3D print this part out of SS, Ti, Al, CoMo, or an Alloy. It just takes some time and a Direct Metal Laser Sintering machine large enough to make the parts. You can then go back and machine final finishes for bearing seats, etc... Cranks I would use Billet, not sure I am trueing DMLS on these parts. Cams would be the same. I will gladly do it for you, just need the seed money and we will start the build process, I have seen some dumber things get funded with much less likely chance of being produced. Heck I have a chassis right here to start with, how close of a tribute do you want? |
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| eeyore |
Jan 16 2020, 05:18 PM
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#37
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Senior Member Group: Members Posts: 889 Joined: 8-January 04 From: meridian, id Member No.: 1,533 Region Association: None |
Would it be easier to have Miles (Redshift) dust off his patented Break In and Bust Out B plan and alter it to sneak into the Porsche museum and snag the engine from the real thing?
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| targa72e |
Jan 17 2020, 12:27 AM
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#38
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Member Group: Members Posts: 258 Joined: 11-September 16 From: colorado Member No.: 20,392 Region Association: None
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totally possible just takes $$$. You could work with one of these guys that are producing new 911 cases.
https://www.taorminaracingdesigns.com/ http://forums.pelicanparts.com/911-engine-...c-racing-7.html Both are making new cases one is focused on 2.0 the other 3.6. CNC out of billet is only a cad file away. Marine crank could make the crankshaft. heads would be easy as the are individual standard 911 Weld up some cam towers special cams. All possible John |
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| sixnotfour |
Jan 17 2020, 07:40 AM
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#39
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914 Wizard Group: Members Posts: 10,412 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains
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100% Billet 12,500 Noonan
https://noonanrace.com/pages/contact-us https://www.facebook.com/NoonanRaceEngineer...29072154492193/ |
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| mb911 |
Jan 17 2020, 07:58 AM
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#40
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914 Guru Group: Members Posts: 6,815 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest
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Best solution is 2 polo motors coupled.. Any GA lycoming is not a good solution.. Just designed around low rpm high TQ.
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