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What could replace timing chains/belts in an ICE engine? #5431785 05/17/20 07:18 PM
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Jeff8820 Offline OP
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Please feel free to flame me, but my mind is thinking mechanicals today. I know timing belts and chains generally do an excellent job doing what they're supposed to but what could be used in the place of them, could the cam shaft be connected to a dedicated electric motor and run by all the ECM parameters , or would it never be accurate enough to time all the valves correctly, as I write this I'm realizing that a timing chain/belt driven by the crank will probably never go away as it makes the most sense. I know engineer types are probably laughing at me but I was just speculating

Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5431789 05/17/20 07:21 PM
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Chris142 Offline
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Gears are popular in larger stuff


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: What could replace timing chains/belts in an ICE engine? [Re: Chris142] #5431791 05/17/20 07:23 PM
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Jeff8820 Offline OP
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I was running this by a co worker today and he thinks BMW has already tried this , or something vaguely similar ๐Ÿ™„

Last edited by Jeff8820; 05/17/20 07:24 PM.
Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5431792 05/17/20 07:23 PM
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DuckRyder Offline
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Robert
  • 2019 Volkswagen Jetta R-Line
  • 1972 F100 Ranger XLT (445FE/C6/9โ€ 3.50 Truetrac)
  • 2002 Ford Ranger XLT 4D Supercab 3.0L
Re: What could replace timing chains/belts in an ICE engine? [Re: DuckRyder] #5431794 05/17/20 07:29 PM
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Jeff8820 Offline OP
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Interesting, I didn't even think of the elimination of the camshaft itself, just how it's being driven .. Thanks, good read.

Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5431804 05/17/20 07:44 PM
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blufeb95 Online Content
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Last edited by blufeb95; 05/17/20 07:44 PM.
Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5431806 05/17/20 07:45 PM
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slacktide_bitog Offline
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there's wankel rotary engines hide

Re: What could replace timing chains/belts in an ICE engine? [Re: slacktide_bitog] #5431812 05/17/20 07:54 PM
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blufeb95 Online Content
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He made an updated video with the announcement of the Koenigsegg Gemera, pretty neat concept, having two exhaust valves and being able to use one to go straight to the exhaust and another to the turbo, no need for an external waste gate when the exhaust valve can be the waste gate.

Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5431869 05/17/20 08:59 PM
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jhellwig Offline
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Gears, driveshafts, electric, or hydraulic actuation.


Sparks fly from my fingers.

1995 Chevy K2500 Suburban lt 5.7
2014 Toyota Sienna
1983 Chevy K5 350
Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5432002 05/18/20 03:21 AM
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FordCapriDriver Offline
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My 1975 Ford Capri has a gear driven Camshaft, a simple pushrod 3.0L V6 so just two gears.


1975 Ford Capri II Ghia 3000 V6 - 315k, Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - 110k, Valvoline Maxlife 10W-40

Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5432007 05/18/20 03:43 AM
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Silk Offline
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I prefer gears. NSU used eccentrics on the 250 Max engines.

[Linked Image from cybermotorcycle.com]


1987 BMW R65 - Penrite VTwin 20-50
2005 Nissan Expert - 5W-30 Castrol Edge
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5432020 05/18/20 05:01 AM
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Skippy722 Offline
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While they may eliminate camshafts at some point, I just canโ€™t see keeping the cam(s) and driving them via a servo or something while ditching belts/chains/gears. Higher torque, ~3200rpm (cam turns 1/2 the speed of the crank) servo motors tend to be quite large as well.


2019 Ram 1500 Classic
2018 Dodge Grand Caravan GT

Slight Mopar obsession
Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5432058 05/18/20 06:11 AM
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vwmaniaman Offline
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consider a 2 stroke. Simplicity


Don't waste your time on a slipshod repair.
Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5432087 05/18/20 07:02 AM
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Kestas Offline
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When I rebuilt my Olds 350 rocket engine I had the option to replace the timing chain with a gear set. I believe the downside is noise.

Re: What could replace timing chains/belts in an ICE engine? [Re: Jeff8820] #5432133 05/18/20 07:57 AM
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JohnG Offline
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Take a look at some motorcycle engine designs to see some really odd stuff, like worm gear drive for example.
The old 300 cu. in. Ford straight six had bevel gears to drive the cam, the lower one had plastic teeth to reduce whine. It would wear out after about 400,000 miles!

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