Internal Vs. External Wastegate?

[TwoFoutyEsEx]

Im looking for a T3/T4 60Trim .48A/RFor for KA-T set-up. Most of the turbos I find are internally wastegated.Ill be running 8-10 PSI and looking for around 260-280hpShould I be looking for an external wastegate, Is it worth that extra money or no?

[eazye2000]

Well, for a quality turbo with those specs, you will be spending 300-600 bucks. Then another 200 for an external gate. Unless you find an internally gated one which I'm not personally familiar with.You can go with a ball bearing, water-cooled, internally gated turbo with the Garrett name for about 1k, but it will be a T2. With the power goals you are looking for, it's a toss up between which one to go with. Source out the parts for each setup, and look/read up on feedback from the people who own different setups.

Seems to be quite the subject lately between T2 or T3, or Internal/External gates.

[GTR PrYdE]

Im looking for a T3/T4 60Trim .48A/RFor for KA-T set-up. Most of the turbos I find are internally wastegated.Ill be running 8-10 PSI and looking for around 260-280hpShould I be looking for an external wastegate, Is it worth that extra money or no?

I would think an internal gate would have a hard time with 8-10psi, so you'd probably have boost creep issues...

Go external and be safe.

This is a real decent priced New Precision 50 trim (better than the 60trim IMO)

http://cgi.ebay.com/ebaymotors...ories

[neverlift]

not too big on my external honestly, it works good and all but as soon as it opens acceleration slows.I think its from the boost source is ran off the comp housing, making it hit the spring limit so soon so hard. 7psi off my internal setup was faster. But that could be a few thing this setup is way diff on the tuning side, only change in turbo setup is the bov... we will see soon, if I think about it I'll let ya know if it changes with the boost source

[GTR PrYdE]

Change your boost source to the intake manifold, and if that doesn't help, a mbc or ebc can do a great deal.

What wastegate are you using?

[neverlift]

ebay tial knock knock off works great! it just vents so gd hard it slows me down, I have a mbc I thought about putting a slight pre load on the spring but have been doing some body work(hood vent just before the turbo, and shaving the stupid washer fluid squirters) so I put it off, I need to get on it as I have a first time autox event the 28th. But again I think moving it to a pipe or the intake mani itself would do me just as good, the comp housing outlet is just too close to the boost source.

maybe I'll get a chance tomorrow, I'll update you guys!

[WDRacing]

50 trim is WAY better then the 60.

External wastegated setups own internal ones.

Those are two facts, use them as you will.

WD

[sorrowfulkiller]

External will always gain more power than internal because of how the air moves through each setup

External will give a higher volumetric efficiency (more efficient)

External will hold boost longer

Internal, you can unhook the swing arm off the actuator and run no boost

Thats about all the pros of each

[neverlift]

I agree and having ran both I love the external, it fuggin rocks.

but the feeling slower my just be me lifting from the noise of it, vta wg lol, I've had a couple friend ride and they said it felt like we slowed down when the wg opened. BUT it could be my tuning is so diff, no longer runnign any management except fuel pressure raised.

running the mbc only increased my pressure even without any load on the spring(vented mbc). Cars acts the same though...

[SiDwAyZ240]

while we are talking about wastegates i wanna make sure i'm doing my set up write. i am a little confused on a wastegate spring, it should be the lowest amount of boost you want to run right, and a boost controller will allow you to turn it up. someone please make sure i'm straight, thanks.

[GTR PrYdE]

Correct. You are only supposed to go twice over the spring though-

7 psi spring = 14psi max..

[SiDwAyZ240]

Thanks GTR, exactly what i was looking for