MyE28.com

I know TCD has a good reputation, and I am a new owner of a 'kit' that entails most of everything tcd sells, including a stage 3 turbo. It has a 60 trim comp wheel, stage 5 turbine, .58 exhaust housing. Manufactured by comp turbo. Their website looks good, promising close to 99% efficiency. They do admit that their company is semi new, but also say they have 50 years of experience.

I am just wondering what type of quality I should expect. How long will it last, and are these easily rebuilt if it get's worn out. Also, what do the spec's mean as far as 60 trim, and stage 5 turbine, etc.

The cartridge is manufactured by Garrett.

Todd, are the aluminum center cartridge turbos from comp made my garrett? Because i was under the assumption that they werent.


To the op. Please take a look through garretts website. There is plenty of information available. No need to discuss is here.

George wrote:Todd, are the aluminum center cartridge turbos from comp made my garrett? Because i was under the assumption that they werent.


To the op. Please take a look through garretts website. There is plenty of information available. No need to discuss is here.

I don't supply aluminum center cartridges. They are cast iron.

Not sure why this shouldn't be discussed.

I am just trying to figure out what it is that I'll be using. And to hear other people's opinion's. Possibly learn what these term's mean. I looked at garret's website, but I don't know what to look for.

I never implied you did. Seeing how your an official distributor i figure youd be a good person to as comp wont give me a straight answer. Feel free to email me.

Start here. You'll smell better.

I've read that.The 101, and most of the 102, Not even thinking about the 103.

But that doesn't tell me about what I asked. Am I being intrusive because I am curious about what type of turbo I have?

86GT635 wrote:I am just wondering what type of quality I should expect. How long will it last, and are these easily rebuilt if it get's worn out. Also, what do the spec's mean as far as 60 trim, and stage 5 turbine, etc.

Whats that saying about fishing and such?


Garret cores will last longer than anything else readily available on the market. Longer than Holset, Borg Warner, Mitsu and so on. I base part of this partially on thousanrds of personal hours on the dyno as well as the experience of the guys I work with.

I personally would not put anything other than a genuine Garrett on my own car. I get paid to make forced induction parts if that offers any perspective and use a wide variety of crap depending on what the customer wants.


Life expectancy should be in the 10's of thousands of miles. Oil changes, air filter cleaning and general up keep all play a factor. Keep in mind that you are (will?) be using a journal bearing turbo so pay close attention to your oil as it both cools and lubricates the rotating assembly.

Todd can have whatever turbo you own rebuilt. As can most turbo shops (though most of these are heavily diesel so lead time may increase). Garret operates on a core basis. You send them your old one and get a new one in return.


Please do more reading on A/R, Trim and Turbine size.

All the information is available to casual reader.

So is the cartridge a gt35r or what? I've got the stage 5 turbine. And I thought the garrett had ball bearing turbo's.

86GT635 wrote:So is the cartridge a gt35r or what? I've got the stage 5 turbine. And I thought the garrett had ball bearing turbo's.

You have the following:

A Garrett journal bearing cartrige with an oil cooled and lubrcated bearing.

A 60mm compressor wheel.

A Stage 5 turbine.

A Comp TurboT04e compressor cover and backing plate.

A Garrett .58 on center exhasut housing.

There are no other details. That is what you have.

i second the garrett only when it comes to non "stock location turbos" (mitsubishi's are pretty reliable for that) i knew someone that had two comp turbo failures within a couple of thousand of miles. that's the only thing that i know about them. i don't really know much more info about the car with the failures either. i know it is a very clean supra running something very large at low boost. (20 psi or so)

i put over 30k on a garrett bb before i sold the car.

.58 seems like a small turbine housing for that big turbine wheel. is that what people are usually running?

mark

sideways7 wrote:i second the garrett only when it comes to non "stock location turbos" (mitsubishi's are pretty reliable for that) i knew someone that had two comp turbo failures within a couple of thousand of miles. that's the only thing that i know about them. i don't really know much more info about the car with the failures either. i know it is a very clean supra running something very large at low boost. (20 psi or so)

i put over 30k on a garrett bb before i sold the car.

.58 seems like a small turbine housing for that big turbine wheel. is that what people are usually running?

mark

It's a T4 exhaust housing so .58 is fine.

what is spool like on something like that?

A 60trim give 0,2bar boost as early as 2000rpm on a 2.5 if that means anything to you.

it gave even more boost on a 2.8 I had that early.

sideways7 wrote:
.58 seems like a small turbine housing for that big turbine wheel. is that what people are usually running?

mark

I'm running a .58. T4 is whole other ball game compared to most of the T3 that is used on smaller import stuff. I'm at 15 psi by 3000 rpm.

George is correct. A T4 .58 is quite appropriately sized for an M30. Remember, that ARs do cross platforms. A .58 T4 is much larger than a .58 T3.

yeah, for some reason i was thinking it was a divided entry t4. i was also thinking that a stage 5 turbine is much bigger than it actually is.(i'm a little rusty on my old school t series nomenclature) .58 would be restrictive if that were the case. sorry about that.

I was wondering if there was a compressor map available for this turbo?

I haven't been able to find it but want to calculate where I am at with my altitude and boost levels in terms of compressor efficiency.

tschultz wrote:I was wondering if there was a compressor map available for this turbo?

I haven't been able to find it but want to calculate where I am at with my altitude and boost levels in terms of compressor efficiency.

http://web.archive.org/web/201110281151 ... /turbocalc

The key is understanding the volumetric efficiency of your engine. You need to dyno it to determine that. A simple way to determine compressor efficiency is intake manifold temps at WOT at peak HP rpm.

Thanks Todd.

Any way you could share these dimensions with me either by PM or on this thread? I would just like to better understand how this turbo is sized and start doing some more theoretical calculations with a compressor map.



So far I am happy with the turbo, no plans to change it, but I want to know what efficiency island I am touching at 150kpa.

I get the garrett thing, I'm running a Precision, no issues with it yet.

tschultz wrote:Thanks Todd.

Any way you could share these dimensions with me either by PM or on this thread? I would just like to better understand how this turbo is sized and start doing some more theoretical calculations with a compressor map.



So far I am happy with the turbo, no plans to change it, but I want to know what efficiency island I am touching at 150kpa.

Your should be the Comp5558, I had found this and posted it on the bigcoupe thread. I said yours was the comp 6062 but I'm pretty sure its the 5558

CT3S SERIES 3" INLET 2" OUTLET 360 OIL ONLY JOURNAL BEARING (LESS TURBINE HOUSING)
Product Number Turbo Description Compressor Wheel/Inducer Turbine Wheel/Exducer HP Rating
325558 CT3S Billet 360 55 58 570
325858 CT3S Billet 360 58 58 600
326062 CT3S Billet 360 60 62 660
326262 CT3S Billet 360 62 62 710
326265 CT3S Billet 360 62 65 710
326465 CT3S Billet 360 64 65 800
326767 CT3S Billet 360 67 67 930
So it looks like aside form the covering (mine has the 4 inch anti surge cover) the compressors are pretty close.

http://compturbo.com/products/turbos/ct3