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Patches and Stickers for sale here

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
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Pretty much anything goes, here. Within the global rules of course.
>> No. 21732 ID: b6523d
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>> No. 21737 ID: fb3bdd
...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
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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 )
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
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
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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
>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
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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
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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
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That was... hurtful.
>> No. 21760 ID: cf1481
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>> No. 21765 ID: 762613
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Putting a Hayabusa engine in a smart car wasn't enough...

Got a MK1 VW.

So, what comes out...
>> No. 21766 ID: 762613
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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
I always wanted to throw a busa engine into a Smart Roadster... that or maybe a Scoobie Boxer.
>> No. 21808 ID: 762613
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Bad news: Ended up putting the stock engine back in the MK1 I got for this project because someone offered me a great price for it if it was all stock. (It only had 39K on the odometer.)

Great news: Found another host for the swap, better yet almost as few miles as the previous host and factory new snowflake rims. Wasn't the holy grail turbo diesel model, but I didn't get it for the engine for a reason.

A ~1500lb pickup with a ~200+hp Formula Super Vee swap.

God willing Irma spares me...
>> No. 21868 ID: 7e827c
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Bought a 1965 Falcon Squire wagon. Factory 289 car, though the previous owner took the engine and tranny out. Good thing I have a spare engine and tranny!
>> No. 21889 ID: 09c7e0
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>> No. 21913 ID: 17036f
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Wife got an unexpected promotion at work (didn't apply for it, didn't interview) from wage to salary with full benefits/401k. ~$250 a pay period raise but mando overtime during football season.

Since I didn't trust her 03' Beetle to not burst into flames on her we bought her a new 2018 Mirage SE. I was told that it would be shit in the mountains and on the highway due to the small engine but so far it is doing great. Hell I was passing people just fine on I81 this morning.
>> No. 21920 ID: 5d4aa3
Responding to a dead post kinda

There's another problem with gear driven systems, they have no slack in the system. Think about the torque being exerted on drivetrain components during a harsh downshift. In a a belt or chain system, there is some small amount of bounce that is taken up by the tensioning system. Performance suffers, but with a gear system, and especially on straight cut gears, all the load can shear a tooth. The best performance, and guaranteed to hold valve timing, but an extra failure point for race cars.
>> No. 21937 ID: 61e76a
What's the engine? Like a 1.2L or something?

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