Possibly a Stupid Question....

"12and35" (12and35) 03/27/2017 at 15:44 • Filed to: None

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What in the Hell is the point of mounting turbos at the rear axle on some cars? Cleaner engine bay? More boost? I don’t get it!?!?!? Or I am totally missing something?

crowmolly > 12and35 03/27/2017 at 15:46

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Some engine bays (4th gen f-body as an example) can require a lot of rework to fit a turbo. A rear mount makes it a lot easier.

Daily Drives a Dragon - One Last Lap > 12and35 03/27/2017 at 15:46

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Because you want lots of turbo lag.

Smallbear wants a modern Syclone, local Maple Leafs spammer > 12and35 03/27/2017 at 15:46

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Easier accessibility, less crowded engine bay, lower underhood temps and it means you don’t necessarily need an intercooler.

bob and john > 12and35 03/27/2017 at 15:47

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ease of install, with the turbos so far away from engine you might not need an intercooler, sleeper status under the hood.

12and35 > Smallbear wants a modern Syclone, local Maple Leafs spammer 03/27/2017 at 15:48

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Does the distance from the engine bay cool the charge on the way back?

Tekamul > 12and35 03/27/2017 at 15:49

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Heat/packaging.

If you don’t care about lag (drag racing) it doesn’t really matter.

bob and john > 12and35 03/27/2017 at 16:00

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it might help, but its also not in the hot environment of the engine bay

Smallbear wants a modern Syclone, local Maple Leafs spammer > 12and35 03/27/2017 at 16:01

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It would definitely cool it a fair amount, because of the large temperature difference. Another thing is the fact that it’s not in a hot engine bay to start with, meaning it isn’t picking up as much heat initially. But like I said “necessarily”—still using an intercooler wouldn’t hurt anything.

Snuze: Needs another Swede > 12and35 03/27/2017 at 16:03

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It’s mostly a packaging thing, and somewhat cost related. It’s in all ways worse in terms of performance. The exhaust gas expends a lot of energy and cools a fair bit traveling down those pipes resulting in more lag and less overall performance compared to a conventionally mounted turbo. But if you have a car that wasn’t built with a turbo originally and doesn’t have room in the engine bay it’s a quick, relatively easy way to get a turbo on it compared to shoehorning it into the engine bay.

Sampsonite24-Earth's Least Likeliest Hero > 12and35 03/27/2017 at 16:30

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they also come with a massive amount of turbo lag, or so ive heard

deekster_caddy > Daily Drives a Dragon - One Last Lap 03/27/2017 at 16:44

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Although for non-racing applications a bunch of lag isn’t the end of the world. Think about pulling a trailer up a hill - lag is irrelevant, you just want the extra boost for the long haul. And really, the lag isn’t that awful.

NJAnon > 12and35 03/27/2017 at 17:01

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Batteries go way back there too sometimes. If its not for a weight reason, its some specific design or convenience reason.

Daily Drives a Dragon - One Last Lap > deekster_caddy 03/27/2017 at 21:32

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Oh I know it was just too tempting a joke.

deekster_caddy > Daily Drives a Dragon - One Last Lap 03/28/2017 at 15:04

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np, some people are much more serious about it. !!