APS turbos

[JoeScooby]

Anyone deal with these turbos or running them?? Im going to be hopefully running a APS SR 30 with the APS DR725 frontmount setup this fall... want to get some inputs on their driveability... Im looking into more street then strip...

[Silver04STi]

I too would like to hear more about APS. I hear that their stuff is top notch, but I have no first hand experience with it.

[stichris]

The SR30 and the DR725 are a mismatch, sizewise ;)

I have the DR500.

[TROLL]

APS makes great stuff... their ICs are undoubtedly top notch, and I assume their turbos are too. When you say you are looking for street not strip, do you mean you want driveability and half-decent spoolup? Because those are not things you will get by putting a SR30 into a WRX (if you have an STi it might be half decent though).
Bryan

[stichris]

Bryan, the SR30 is relatively small, and would be very driveable for a street car. It makes up to 340hp. SR30 is not really an upgrade to an STi.

Either way, APS makes awesome stuff, but you can find better deals elsewhere.

[JoeScooby]

scrap that idea... going for a monster port, compressor housing outlet port plus a compress0r wheel upgrade td04 -> 16g.. matched with a larger topmount and my pipes... for what its worth.. ill get a nice kick in the arse

[272sWrx]

fpgreen+dr500=750cc inectorys my new setup coming up

[JoeScooby]

big spender...

unfortunatly I am on a budget and power comes with money. I think my topmount is going to be the most out of it all.

[272sWrx]

im getting rid of mine if you want it, vs 1 txs/hyperflow. its way to huge.

[JoeScooby]

ummm.. probably in the future.. Turbo is getting yanked out in july. That is if you still have it, need to get the snail work done first b4 i buy anything else.

[the mike]

Upgrade to an STi topmount, get an SR40 and some 770 injectors, then get it tuned properly. Tuning is everything when it comes to APS turbos.


You could also look at a Deadbolt TD05-16g. I was going to step up to that on my WRX. Decent street turbo wit a nice amount of potential.

[272sWrx]

i dont think the sti top mount is the best choice for that setup

[the mike]

Price wise it is an upgrade though.

[272sWrx]

a hyperflow/aps/mrt top mount would be good for a sr-40. the best would be a fmic.


whats a tdo5 16g compared to a 18g price wise?

[Smokescreen]

Originally Posted by 272sWrx

whats a tdo5 16g compared to a 18g price wise?

16g w/o a Port is $799 from Deadbolt, $949 for a P and a mod straight inlet. The turbo also qualifies for their "free rebuilds for life" plan.
http://www.boostplanet.com/product2.htm

Their Zilla TD06H 18g comes ported and for oiled cooled it is $1095+ S&H. Oil and water it is $1395+S&H.
http://www.boostplanet.com/product6.htm

I was also going to do the TD05-16g w/ a P&P, but I've decided not to. Don't forget after 300hp, the tranny will start to break apart. You can find better prices on turbos other than APS. Look used if you have to (Clubwrx or Nasioc). And as always, your turbo is only as good as your tune.

[272sWrx]

whats the difference, why the one with water more expensive?

[Smokescreen]

Water Cooling

Whilst turbochargers began to be applied to passenger cars in the late 1970's in response to the energy crisis, the first generation passenger car turbochargers were derived directly from commercial diesel engines. Engine oil was used to provide both lubrication and cooling and whilst this was an effective compromise between cost, durability and performance, in high engine performance applications durability suffered through fouling of the turbocharger bearings through high turbine and bearing temperatures.

By encasing the turbocharger bearings in intricate water passages, engine coolant is used to significantly reduce turbocharger bearing temperatures in order to eliminate the coking and lacquering issues that fouled old fashioned turbocharger bearings. Non water cooled turbochargers have no place in a high performance gasoline engine application and should be avoided at all costs.
Taken from- http://www.airpowersystems.com.au/wrx/aps_turbo.htm

A turbo spins very fast—10,000 to 150,000 rpm depending on size (using low inertia turbos, 190,000 rpm), weight of the rotating parts, boost pressure developed and compressor design. Such high rotation speeds would cause problems for standard ball bearings leading to failure in a turbo. Most turbochargers use a fluid bearing. This is a flowing layer of oil that suspends and cools the moving parts. The oil is usually taken from the engine-oil circuit and usually needs to be cooled by an oil cooler before it circulates through the engine. Some turbochargers use incredibly precise ball bearings that offer less friction than a fluid bearing but these are also suspended in fluid-dampened cavities. Lower friction means the turbo shaft can be made of lighter materials, reducing turbo lag. Some car makers use water cooled turbos for added bearing life.
Turbochargers with foil bearings are in development. This design eliminates the need for bearing cooling or oil delivery systems.
Taken from- http://www.answers.com/topic/turbocharger

[272sWrx]

good info, thanks

[Smokescreen]

No problem man. I could have put it in my own words, but I don't think anyone would have understood it then.