Turbo only allows Short Cast exhaust

[Conza89]

Hi, sorry if this has already been reported, couldn't find it.

I went to build an engine, all fine, when I put a turbo on it, I found my exhaust options was limited to only Short Cast? I just updated to build 1003 from something like 199? Am happy to do a full re-install if it's one of those issues (if I knew how)

I also tried re-loading the engine, and selecting Cast Log first, before turbocharging, but it still reverted to Short Cast only. The issue also isn't related to year, I started at 2013, and moved down to 2001 with the same results.

[Daffyflyer]

Not a bug, it's the only one available for turbos. There will eventually be a long tubular one too, which will allow you larger turbos as it spaces the turbo further out from the engine (and flows better too)

[Juno8]

if you want power try adjusting the Compression lower to make this engine work

[silenthunter]

The key difference between a turbocharger and a conventional supercharger is that the latter is mechanically driven from the engine, often from a belt connected to the crankshaft, whereas a turbocharger is driven by the engine's exhaust gas turbine.
Also to maintain a good efficiency the turbo needs to be as close to the exhaust ports as possible and since the short cast one is the smallest in terms of distance from the engine. The reason is that else the hot gasses cool too much before reaching the exhaust turnine, wich results in less pressure at the intake turbine.

Turbocharging can be used to increase power output for a given capacity or to increase fuel efficiency by allowing a smaller displacement engine to be used. Low pressure turbocharging is the optimum when driving in the city, whereas high pressure turbocharging is more for racing and driving on highways/motorways/freeways. The long tubular ones that Daffyflyer mentioned are mainly used for tuned/racing engines while the short cast ones are for most economical/city cars.

Cut-away view of an air foil bearing-supported turbocharger.


Go to source if you want to know more about turbo's, intercoolers, etc.
source : http://en.wikipedia.org/wiki/Turbocharger

[Conza89]

Cool, good to know thanks Daffyfler and Jun8

also @silenthunter, that's an awesome image, cheers man.