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File 149840760540.jpg - (47.37KB , 800x566 , Rabbit Season.jpg )
21730 No. 21730 ID: b6523d
General car discussion thread

>post your car
>post other people's cars
>post dank maymays
>get derailed by Bat Guano
>ask questions
>get answers
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>> No. 21731 ID: b6523d
File 149840798344.jpg - (296.57KB , 1600x1067 , Audi 4_2 timing chain setup.jpg )
21731
Pretty much anything goes, here. Within the global rules of course.
>> No. 21732 ID: b6523d
File 149840819023.png - (960.68KB , 910x1718 , NSX and GT-R vs burger.png )
21732
>> No. 21737 ID: fb3bdd
>>21731
...Why are straight up gear driven cams not a thing instead of belts or chains? Like I get why in a more complicated layout like that, but for a bog standard inline 4, why not?
>> No. 21738 ID: d08759
File 149848523252.jpg - (147.99KB , 1279x851 , Terminator Genisys T-800 Kyle's remote contro.jpg )
21738
>>21730
You object to me posting about cars I seriously considered buying in that cars thread? Since you are such a strict and slavish stickler for the rules, glance at General Rule 4.
>> No. 21739 ID: dc700d
File 149856093943.png - (17.35KB , 487x600 , CAT C15 OHC timing gear layout.png )
21739
>>21737
Gear drive is actually pretty common on pushrod engines, and diesels.

But chains and belts are generally used on OHC engines due to cost, simplicity, noise, and weight.

A timing belt is almost silent, and uses a minimum of components. The sprockets can be made of sintered iron, or stamped out of sheet metal. Idler bearings are literally just a bearing, with the belt riding directly on the outer race of the bearing. The entire system weighs a couple pounds.
The tradeoff is that they only last 50-70,000 miles.

Chains? A little louder, and a little more expensive, but not by much. They use about the same number of components as a belt but generally not idler bearings, instead using slipper shoes like in that Audi engine. Similar complexity to a belt (in a normal engine, not that Audi monstrosity). Again, the system is light.
Actually, most Big 3 V8s and some Big 3 OHV inlines use a chain rather than gears. Those systems are literally 2 sprockets and the chain.

Running an overhead cam engine on a gear train, that gets expensive and complex. Here's an OHC Caterpillar gear train. Detroits are similar. Even though they're helical gears, they're still noisier than a chain. Not noticeable on a diesel really but you'd hear it on a gas engine.
Think of the cost of machining each gear out, and pressing a bearing in to each one, instead of stamping out a sprocket (wham, done, next!)
Think of the weight of each idler gear needed to transmit the power (and how there would be twice as many on a V engine)
They're actually not that bad to time up though. Easier than a belt I would say.
>> No. 21740 ID: dc700d
>>21738
You seriously considered buying a couple concept cars and the original Mad Max car?
also pls point your optical recognition units at rules 10 and 11
>> No. 21741 ID: 4a7c2c
File 149857365282.jpg - (634.06KB , 1920x1280 , car, Bentley Continental GT Speed 2016 5.jpg )
21741
>>21740
No, I considered buying a 2016 Bentley Continental GT Speed or a 2017 Chevy Camaro ZL1.
But you go and prune away anything interesting in this dead board of scarce traffic, bolstered with your punk powers to act arbitrarily.
>> No. 21742 ID: 45b14b
>>21741
>Post it if it's yours and gets you from point A to point B!
>I considered buying

Those weren't your cars. They were never your cars.
>> No. 21743 ID: 088ef7
File 14986310583.jpg - (439.58KB , 1658x1100 , car, Chevrolet Camaro ZL1 2017 5.jpg )
21743
>>21742
Well, then enjoy this board, IHC. It's all yours.
>> No. 21751 ID: 1ecf87
Sheesh BG, he made this thread specifically so there would be a place for you to dump that kind of stuff. The cars of opchan thread isn't for random other cars, it's one thread with a very specific purpose and keeping it to that purpose is perfectly normal moderation.
>> No. 21753 ID: 2c840f
File 149875093272.jpg - (64.77KB , 750x421 , Initial Burger.jpg )
21753
>>21751
To be fair, I could have been less of an asshole about it.

It is what it is.
>> No. 21754 ID: 842ca3
Bat Guano go format yourself.
>> No. 21758 ID: ce9989
File 149903187431.jpg - (99.11KB , 1047x841 , German WW2 Tiger 2 knocked out 1.jpg )
21758
>>21754
That was... hurtful.
>> No. 21760 ID: cf1481
File 149932171856.jpg - (79.01KB , 625x399 , 2afb2b227d65ca66a05b2ee12c82c5992b8791cbde1c59c14c.jpg )
21760
>:(
>> No. 21765 ID: 762613
File 150035157538.jpg - (2.49MB , 2688x1520 , IMAG2872.jpg )
21765
Putting a Hayabusa engine in a smart car wasn't enough...

Got a MK1 VW.

So, what comes out...
>> No. 21766 ID: 762613
File 150035185956.jpg - (1.91MB , 2688x1520 , IMAG0631.jpg )
21766
>>21765
Must be replaced.

Gentleman. Behold an SCCA Formula Super Vee engine.

Since it's not under any SCCA regs in a civilian car, time to see how far I can go with it.
>> No. 21770 ID: 204121
>>21765
I always wanted to throw a busa engine into a Smart Roadster... that or maybe a Scoobie Boxer.


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