"Parmas" Motor

[PETERPOOP]

Originally Posted by Tamago

positives for top mount
1. less than half the piping
2. cleaner engine bay by simplifying piping and routing
3. puts that gnarly scooped hood to actual use
4. does not block radiator (engine runs cooler)
5. can be thicker than front mount because of Euro NCAP (more room under hood)
6. because of the shorter piping, you see less pressure drop and quicker throttle response
7. because it sits horizontally in the engine bay, it can be sprayed with water easily for quick cooling
8. not damaged by road debris

negatives for top mount
1. if improperly set up, will be less efficient at cooling than a front mount
2. it's not "cool" looking. many ricers equate turbos with front mounts, and if you don't have a front mount, you obviously aren't making any power (this really should be a POSITIVE THING not a negative thing lol)


Positives for front mount:
1. looks cool
2. can be generally longer than a top mount (however, short fat intercoolers are more efficient [less pressure drop] than long thin coolers

Negatives for front mount:

1. silly piping running all over the place (in the case of rear mounted turbos, which is what this is about.. in a longitudinal engine, i.e. supra, front mount is perfect because the exhaust is on the passsenger side and intake is on the driver.. obvious routing is obvious)
2. less efficient because of all the extra bends and charge piping bends. every time you go WOT the turbo has to fill the entire length of charge piping AND intercooler before you actually see boost. this can exascerbate turbo lag
3. attracts unwanted attention (law inforcement comes to mind)
4. susceptible to road debris
5. blocks radiator and AC condenser
6. safety may or may not be compromised (bumper beam hacked) to make the IC/piping fit


that's all i have folks.

not bias at all, of course.

[Tamago]

Originally Posted by PETERPOOP

not bias at all, of course.

not at all..

let's see an intelligent bias in the other direction ;)

[rob323]

Don't you guys have access to barrel type water to air intercoolers over there? Best of both worlds.

[Tamago]

Originally Posted by rob323

Don't you guys have access to barrel type water to air intercoolers over there? Best of both worlds.

only if you have a cold water supply (ice chest) in your car.....

[rob323]

These have proven very effective on high power street cars over here.
Low pressure drop, great throttle response, minimal time required to re pressurise the intercooler tract.
http://www.horsepowerinabox.com/HPIAB2/category76_2.htm

[PHXDEMON]

Originally Posted by rob323

These have proven very effective on high power street cars over here.
Low pressure drop, great throttle response, minimal time required to re pressurise the intercooler tract.
http://www.horsepowerinabox.com/HPIAB2/category76_2.htm

only 1600 dollars. fuuuuuuck that

[rob323]

Yes it's a lot of money but it is all relative (especially if you already have tens of thousands invested in your car).
But I suggested it for the concept, not that product specifically.

[Parmas]

Originally Posted by rob323

These have proven very effective on high power street cars over here.
Low pressure drop, great throttle response, minimal time required to re pressurise the intercooler tract.
http://www.horsepowerinabox.com/HPIAB2/category76_2.htm

The product looks effective but for our engines is purely a waste of money.

[rob323]

It's the thought that counts.
Make up your own using bits from an old GT4 celica or a Subaru RS Liberty/ legacy. More than adequate for 300 hp and at a fraction of the cost and you still get all the benefits.

[cdydjded]

Originally Posted by Tamago

not at all..

let's see an intelligent bias in the other direction ;)

95% of the disadvantage of a top mount is heat soak. Heat rises, a top mount places the I/C right on top of a hot engine. If FMIC are so overrated why is there not 1 aftermarket turbokit offered with a top mount? Why do 8 out of 10 factory turbocharge cars come with front mounts, example:
FMIC
Supra
Evo's
Grand Nationals
GLHS
RX7
Golf
3000GT
Eclipse

TMIC
WRX
CELICA