TO4B V-trim users

[THE_ARTIST_]

i had a question about this turbo more for longevity, about how long do they last? I figure ill be goin to the track maybe once a month during the race season, and i guess im your average lead foot driver. im just looking for around 350-400 on my GST.

i would go with the 16G but with the install kit it would actually cost a little more than the TO4B. and the TO4B is only oil cooled (i believe). thanks.

 

[JusMX141]

Being water cooled does nothing to increase reliability, it simply prevents the oil from coking and sticking to the turbo's internals in the event of a hot shutdown.

Water cooled turbos are generally found on stock turbos because the manufacturer knows that 99% of the people who buy that car will not allow it to cool down properly before shutting the car off.

With that in mind, your turbo will only be as reliable as you allow it to be. I would run the oil supply to the head to prevent to possibility of blowing oil past the turbine seal (common on T3 turbos) or install an oil restrictor if you're getting your oil from the filter housing. An inline filter wouldn't be a bad idea, either.

 

[THE_ARTIST_]

does nobody use this turbo?

 

[crimsondragon]

Being water cooled does nothing to increase reliability, it simply prevents the oil from coking and sticking to the turbo's internals in the event of a hot shutdown.

Water cooled turbos are generally found on stock turbos because the manufacturer knows that 99% of the people who buy that car will not allow it to cool down properly before shutting the car off.

With that in mind, your turbo will only be as reliable as you allow it to be. I would run the oil supply to the head to prevent to possibility of blowing oil past the turbine seal (common on T3 turbos) or install a .065" oil restrictor if you're getting your oil from the filter housing. An inline filter wouldn't be a bad idea, either.

I thought the V-trim is a journal bearing turbo?

 

[THE_ARTIST_]

it is

 

[JusMX141]

It is. Trust me, this is coming from experience.

Recently my buddy was having huge problems with his PTE 6031E. The turbo would have no more than 1000 miles and it would develop a TON of up / down play, and would start to blow oil past the turbine seal. The car has a built 6-bolt and the turbo was being fed from the filter housing with no restrictor....just an inline filter.

Upon disassembling the turbo, both times I found the turbine shaft was scored with bronze material from the journal bearings....almost a symptom of a turbo that wasn't getting enough oil. What was happening was the excessive oil pressure and volume was literally loading the shaft under boost and forcing the shaft to contact the journal bearings.

After the second time I rebuilt the turbo, we moved the oil supply to the head. It's fed with a stainless line and a full-flow inline filter from the head. The turbo boosts better, has NO smoke, and is still going strong with NO shaft play.



Bottom line....if you're feeding a Garrett turbo unrestricted from the filter housing, you're killing it with oil. I'm done with feeding turbos from the filter housing.

 

[JusMX141]

does nobody use this turbo?

Search button worked the last time I checked.....

http://www.dsmtuners.com/forums/turbo-system-tech/270625-v-trim-turbo-users-sign.html

http://www.dsmtuners.com/forums/turbo-system-tech/255894-v-trim.html

http://www.dsmtuners.com/forums/turbo-system-tech/252482-turbo-v-trim-m-trim.html

http://www.dsmtuners.com/forums/turbo-system-tech/237286-upgrading-to4b-v-trim-evo-iii.html

http://www.dsmtuners.com/forums/turbo-system-tech/236734-to4b-v-trim-surge-fix.html

http://www.dsmtuners.com/forums/turbo-system-tech/235332-bullseye-v-trim.html

This thread may change your mind about the V-trim:
http://www.dsmtuners.com/forums/tur...trim-owners-post-up-your-lb-min-psi-rpms.html

http://www.dsmtuners.com/forums/turbo-system-tech/234198-v-trim-turbine-wheel-question.html

http://www.dsmtuners.com/forums/tun...2590-t04b-v-trim-afpr-650s-log-questions.html

http://www.dsmtuners.com/forums/newbie-forum/213240-t04b-v-trim-stats.html

http://www.dsmtuners.com/forums/turbo-system-tech/230714-difference-to4b-v-m-trim.html

http://www.dsmtuners.com/forums/newbie-forum/223470-anyone-12s-bullseye-v-trim.html

http://www.dsmtuners.com/forums/bolt-tech/220983-bullseye-v-trim-vs-bullseye-57-trim.html

http://www.dsmtuners.com/forums/turbo-system-tech/216685-bullseye-to4b-v-trim.html

http://www.dsmtuners.com/forums/newbie-forum/208212-t04b-v-trim-1st-log-impressions.html

http://www.dsmtuners.com/forums/problem-diagnosis/208036-to4b-v-trim-compressor-surge.html

http://www.dsmtuners.com/forums/turbo-system-tech/197836-turbo-any-good-garrett-t04b-v-trim.html



Looks like you have lots of reading to do.

 

[crimsondragon]

It is. Trust me, this is coming from experience.

Recently my buddy was having huge problems with his PTE 6031E. The turbo would have no more than 1000 miles and it would develop a TON of up / down play, and would start to blow oil past the turbine seal. The car has a built 6-bolt and the turbo was being fed from the filter housing with no restrictor....just an inline filter.

Upon disassembling the turbo, both times I found the turbine shaft was scored with bronze material from the journal bearings....almost a symptom of a turbo that wasn't getting enough oil. What was happening was the excessive oil pressure and volume was literally loading the shaft under boost and forcing the shaft to contact the journal bearings.

After the second time I rebuilt the turbo, we moved the oil supply to the head. It's fed with a stainless line and a full-flow inline filter from the head. The turbo boosts better, has NO smoke, and is still going strong with NO shaft play.

Bottom line....if you're feeding a Garrett turbo unrestricted from the filter housing, you're killing it with oil. I'm done with feeding turbos from the filter housing.

Wouldn't feeding it from the head be a cause for lack of oil as well? I'm wondering if I should move my oil feed line now. I've never heard of people blowing turbos cause of excessive pressure except on BB turbos. Are you sure it wasn't a defective turbo in the first place?

 

[JusMX141]

Your cams get enough oil pressure to function properly for thousands of miles, and they're obviously getting their oil supply from the head.

If you draw your turbo from the head, it's ALWAYS going to see oil. There isn't a time when the head gets NO oil....it may just be slightly less than the filter housing (which is 6" from the oil pump) at any given time. Even at idle with a warm car, there is still plenty of oil to keep your turbo alive. If the head wasn't a good source of oil, Mitsubishi wouldn't have supplied all of the 14B's that lasted hundreds of thousands of miles from the head.

You can feed your turbo from wherever you want- I'm just done telling guys to feed theirs from the filter housing and seeing them destroy their turbos....although it does do well for business!

 

[THE_ARTIST_]

Looks like you have lots of reading to do.

i would, except none of those have an answer to the question that i asked.

 

[JusMX141]

i would, except none of those have an answer to the question that i asked.

Wrong.

You asked if anyone used that turbo, and I provided you with plenty of links to threads posted by folks who do. I figured you were over the reliability question after my first response.

Wouldn't feeding it from the head be a cause for lack of oil as well? I'm wondering if I should move my oil feed line now. I've never heard of people blowing turbos cause of excessive pressure except on BB turbos. Are you sure it wasn't a defective turbo in the first place?

If it was defective, then I have a PTE 5027E and a SBR G60 that were defective also....yet somehow fixed themselves when the oil supply was moved to the head.

 

[mach4g63t]

I know two guys who are using these turbos. BOTH are brand new and blowing lots of oil through the compressor. The only difference in the two is one has the SS/polished exhaust housing.

Neither of these turbos have more than 100 miles on them of intermitten driving and are blowing lots of oil, so much so that puddles are pooling up in the intake pipe. From what I've seen, I'd avoid this turbo. Bullseye makes great turbos, but something is wrong with this one from what I've seen.

 

[JusMX141]

I know two guys who are using these turbos. BOTH are brand new and blowing lots of oil through the compressor. The only difference in the two is one has the SS/polished exhaust housing.

Tell them to make sure their oil drains are sufficient in size and do not have kinks. There is no reason a new turbo should blow oil on the cold side of all places...the V-Trim uses Garrett's Dynamic compressor seal which generally means a foolproof reliable seal on the compressor side.

These Garrett CHRA's tend to suck up a ton of oil if they're not restricted- you have to be sure to get the oil to drain as quickly and efficiently as possible or it will start to dam up in the center housing where it has no place to go but blow past the seals.

The other possibility would be excessive crankcase pressure that is not allowing the oil to drain properly. If their engine has high mileage, the turbo's oil is trying to flow down the drain while crankcase pressure is pushing upward in the oil drain, reversing the oil flow. You can try to solve this by replacing the PCV valve with a standard pipe nipple and routing it to a catch can instead of back into the intake manifold.

 

[99gst_racer]

I had one for a few months.

It surged so bad that it eventually wore out the journal bearings and developed nasty shaft play.

I wouldn't recommend that compressor wheel for a DSM.

But, if you read those links posted in post #7, you would have already read about my experience with the V-trim. Searching about this turbo will yield much more results than a current thread. There's probably many more people that used to use this turbo than people that still do. And for good reasons.

 

[KYNgsx]

Yup, another ex-user here. My experience was pretty similar; lots of surge, and then it blew. Good learning experience I guess; made a much better choice on my next turbo.

 

[THE_ARTIST_]

Wrong.

You asked if anyone used that turbo, and I provided you with plenty of links to threads posted by folks who do. I figured you were over the reliability question after my first response.

well im not going to waste my time reading through all those threads when i never asked about the flow rate/how much power ill get out of it etc... i just wanted to know about how long it would last, thanks anyway though.

 

[JusMX141]

well im not going to waste my time reading through all those threads when i never asked about the flow rate/how much power ill get out of it etc....

im just looking for around 350-400 on my GST.

?????

 

[THE_ARTIST_]

thats called a statement, there was no question mark behind it. but thanks for your info.

i had a question about this turbo more for longevity, about how long do they last?

my original question.