An engine with NO timing belt or chain to wear or break! - Kia Forum
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post #1 of 10 (permalink) Old 04-28-2016, 07:44 PM Thread Starter
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An engine with NO timing belt or chain to wear or break!

The Chinese seam to have some better ideas than the rest of the car Manufacturers ....
The "QamFree motor uses electro-hydraulic-pneumatic actuators to provide precise control over each valve for more power and a 12 to 17 percent improvement in fuel economy. "
Looks like the engine may have a turbo on it also...
Camless technology promises more power, better fuel figures
Dave

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post #2 of 10 (permalink) Old 04-29-2016, 03:22 AM
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My '69 mercury comet coupé does Not have sophisticated apparatus, not timing belt, chain nor gears, and already has more than fourty five years working flawlessly so far... that engine is known as the "Thriftpower six" see and works with Pushrods:

~► Ford 250 Six-Cylinder Engine

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post #3 of 10 (permalink) Old 04-29-2016, 05:15 AM
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I would say the Chinese can produce Ideas but the Ideas are produced else were.
Koenigsegg's Camshaft-Free Engine Explained, Watch It in Action [Video] ? News ?*Car and Driver | Car and Driver Blog
I was under the impression that race engines an had played with the idea for years but no one wanted to spend the money developing as new power technology was on the way.

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post #4 of 10 (permalink) Old 04-30-2016, 10:02 AM
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How To Improve Six-Cylinder Performance

It does have a timing chain it does not have an overhead cam. The chain still drives the cam and the pushrods go up through the block. The distributor runs off the cam. I am pretty sure all but a few of the old engines use a timing chain set up. The Mazda rotary was an exception. I have worked on quite a few of the oldies and even owned a Mustang with the six in it. The use of the overhead cam was to eliminate the pushrods and make it a direct contact for rockers and valves. Made for a quieter engine but opened a can of possible failures through belt breaking or maintenance issues.
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post #5 of 10 (permalink) Old 05-06-2016, 09:50 PM
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Quote:
Originally Posted by nstoolman1 View Post
It does have a timing chain ...
No. Sorry, you're Wrong.

On these engines that uses Pushrods, which usually are known as OHV
(Over Head Valve) engines, there is a "Direct Gear Connection" where is no Chain involved. (I know that some OHV pushrod engines used chains, but that is Not the case here)

Subaru built their legendary H4 1.8L "EA81" engine, which is a Boxer on same OHV system, and I've seen them surpassing ~ 900K miles so far, still running; but Subarus are the most High Mileage engines from Japan.

Further information on Pushrod OHV systems:


~► Direct Gear Connection

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post #6 of 10 (permalink) Old 05-07-2016, 11:15 AM
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Quote:
Originally Posted by Loyale 2.7 Turbo View Post
No. Sorry, you're Wrong.

On these engines that uses Pushrods, which usually are known as OHV
(Over Head Valve) engines, there is a "Direct Gear Connection" where is no Chain involved. (I know that some OHV pushrod engines used chains, but that is Not the case here)

Subaru built their legendary H4 1.8L "EA81" engine, which is a Boxer on same OHV system, and I've seen them surpassing ~ 900K miles so far, still running; but Subarus are the most High Mileage engines from Japan.

Further information on Pushrod OHV systems:


~► Direct Gear Connection

Kind Regards.
All engines (except the rotary and Flat heads) are overhead valve.

On the Mercury sixes for 1969 someone, based on your info, needs to tell Rock Auto that they don't need to sell timing chains for 2.8 L, 3.3 L and the 4.1 L engines. They do sell idler gears that can replace the chain on some engines (some chevys I believe) but your going to have to show me a picture of that engine with a direct drive set up. If this engine is sold or produced overseas then we might be talking about another animal all together.
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post #7 of 10 (permalink) Old 05-09-2016, 10:52 AM
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Quote:
Originally Posted by nstoolman1 View Post
... someone, based on your info, needs to tell Rock Auto that they don't need to sell timing chains ...
Rock Auto has been a great source of parts for me as well, but they do make that same mistake pretty often; in example, the Subaru EA81 Boxer engine that I mentioned above, is a 1.8L H4 engine that was offered in certain Subarus since 1979 to 1994, and parallel to that engine; subaru offered the EA82, which also is a Boxer, 1.8L engine, BUT the EA82 came with two timing belts, one per each head. The EA82 was offered from late 1984 to Late 1994, so both 1.8L boxer engines were available side by side during several years.

Despite that the EA81 is an OHV engine, and the EA82 is an SOHC engine; the many similitudes between them, such like both of same displacement, both were offered carbureted and MPFi Turbo, both had Hydraulic Lifters, etc... makes them to think that the EA81 and the EA82 is the same engine; Rock Auto sells Timing Belts for the EA81, which doesn't use them.

Same happens with the in-line six cylinder Ford engines, not all are built the same way.

I hope that you understand that the parts' stores are not Perfect, nor the Software they use; in example, the Kia Dealers always offers the internal C.V. joint's boots for the Manual Transmission Models, for the Manual and Automatic models of the second gen Kia Sephia, the same error is found on the Software used by NAPA auto parts; but the boot for the Automatic, is very different in design and dimensions, than the Manual counterpart.


Quote:
Originally Posted by nstoolman1 View Post
... your going to have to show me a picture of that engine with a direct drive set up...
Finally, here are the Photos you asked for, Kind Regards.
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post #8 of 10 (permalink) Old 05-09-2016, 11:03 AM
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Exclamation Back on Topic

Dear Dave,

Quote:
Originally Posted by DavesSpectra View Post
... The "QamFree motor uses electro-hydraulic-pneumatic actuators to provide precise control over each valve for more power and a 12 to 17 percent improvement in fuel economy...
Sorry for the involuntary hijack of this thread. Back on Topic:

Here is a Video description from an Eauropean "FreeValve" Camless Engine:


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post #9 of 10 (permalink) Old 05-09-2016, 11:04 AM
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Lightbulb

Also, this is a pretty interesting article, regarding the Subject:

~► Where are all the Camless Engines?

Kind Regards.


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post #10 of 10 (permalink) Old 05-09-2016, 07:24 PM
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I will concede we our both right. I know some older engines used a direct drive cam to crank I just don'y know all of them.

The ones that are DD can be very noisy.

I definitely know that auto parts stores can be flawed. Been there done that for 40 + years.
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