engine 180 degrees *random*

[bluemaumau]

random thought, not sure if it belongs in general or tech

i was looking at zohabs evo the other day and was wondering why cars arnt all built like that?

especially N/A cars

for example take a ae111 bzr, if it was rotated 180 degrees the exhaust wouldnt have to run under the sump and the ITBs could plumb up to the front grill, water lines would also be much more effecient(less length)

am i missing something?

[sergei]

You are missing one big thing - most of new FWD only cars are built like that.
As with extractors at the front is came from RWD era (RHD models), turn (clockwise rotating engine) 90 degrees and you get extractors on the front (which were on the left, away from brake master cylinder). With euros you will find other way arround as they are LHD mostly.
Actually turbo between firewall and engine is very bad idea - a lot of heat in a cramped space can lead to disaters. Also it limits the space for turbo and manifold so you are stuck with log type manifold (most of the times).

[bluemaumau]

well there you go, im 5 years late!

[Bling]

1 problem might be the heat generated by the extractors close to the firewall with no decent airflow to cool them.

agreed tho, seems like it would make a lot of sense what you say

EDIT: I should post faster in future, no one had posted when I started my reply

[bluemaumau]

yea i figured that sergei, i guess it would only work on N/As

[Volodkovich]

Another reason why they are that way around is in cold climates if the carbs were out the front they would frost up causing cold starting issues.
Not as much as a deal on efi cars however

[rollaholic]

alot of volvos have their turbos at the rear of the engine, they are absolutely horrible to work on as its such a tight squeeze.

makes sense for NA, not so much for turbo.

[jondee86]

There are a few FWD cars factory-built with the inlet manifold on the front
of the engine, some versions of the Dodge Neon, for example. And I recall
seeing pictures of race cars where the head has been modded to put the
end of the velocity stacks out in the fresh air A fairly extreme mod, but
it certainly has been done on cars and motorcycles.

At speed, when the exhaust is getting hot, there is a heap of air flowing
around the engine, so a bit of heat shielding should be all that is needed.

Cheers... jondee86

[barryogen]

1 problem might be the heat generated by the extractors close to the firewall with no decent airflow to cool them.

The last of the Celica, the zze12x model corollas and the MRS have engines in this way.

In the Celica they have a small bonnet scoop to direct air down passed the headers, in the corolla and MRS they dont.

In the MRS it is a bit different, engine midship and all, and in the zze12x corollas they have a bit more room between the engine and the firewall due to a bit more "upright" nature of the sitting position etc.


You can fit a turbo in there apparently, and log manifolds is about all you can use, however, there are also some huge numbers coming from some of these too... 505ps from a 1.8? nutty. and in a FWD... insane.

[matt dunn]

You can fit a turbo in there apparently, and log manifolds is about all you can use, however, there are also some huge numbers coming from some of these too... 505ps from a 1.8? nutty. and in a FWD... insane.

How's your conversion going?

[barryogen]

You can fit a turbo in there apparently, and log manifolds is about all you can use, however, there are also some huge numbers coming from some of these too... 505ps from a 1.8? nutty. and in a FWD... insane.

How's your conversion going?

Slowly... I'm married, and hence only allowed to spend $x on things... so some of it has to be sneaked in... like flywheel and LSD are going in "because my clutch needs doing"... clutch is actually being done with uprated pressure plate to handle a few more ponies.

There is only so much I can get done by the workshop across the road from my mrs work(staff rates).

[Mr Revhead]

There are a few FWD cars factory-built with the inlet manifold on the front
of the engine, some versions of the Dodge Neon, for example. And I recall
seeing pictures of race cars where the head has been modded to put the
end of the velocity stacks out in the fresh air A fairly extreme mod, but
it certainly has been done on cars and motorcycles.

At speed, when the exhaust is getting hot, there is a heap of air flowing
around the engine, so a bit of heat shielding should be all that is needed.

Cheers... jondee86

BTCC! a common mod on the the 2ltr super tourers, they spent quite a bit on it, AGR in nelson has a guy there who was with janspeed when they did the primera engines, reckoned there was stuff going back and forth from japan to england about it, they tried just rotating the head, ended up with a complete new casting!