Singles, compounds, triples as time goes on..........

[Robby Avery]

So as I recall correct me if I'm wrong 10 years ago give or take big singles and slowly heard of compound turbo kits started to hit the diesel market. Maximized performance Inc was the first I recall putting nasty girl over the 1000 hp crest and introducing a new era for performance in duramax diesels, then triples started showing up and as kits have become more refined I've noticed more borgs being used than any thing else. What ever happened to the super nice garrett Mpi kits over stock vgts or even ihis. I know that there are super nice kits offered these days like hsp, wherli, Sdp, just to name a few. I loved the super clean lines that Mpi used to produce using the garrett chargers with that super clean waste gate sleekly tied into the exhaust cross over tube off the stock turbo and the almost stock appearing look that it had under the hood as if gm put it there from the factory even with a gtx4202. I have nothing against borgs but imho personally I'm a garrett turbo guy and it seems as though garretts just aren't used anymore in build or kits. What gives as this has become the norm seems to me, would Mpi still even offer a kit with a garrett turbo as an optional charger?

 

[IOWA LLY]

I have an MPI kit coming off an LLY very soon if your interested.

Although to answer your question the reason for the switch is fairly simple.

The borg warner S475 is cheap. And the 96mm turbine allows you to use it without a waste gate so plumbing is simplified.


Sent from my iPhone using Tapatalk Pro

 

[Robby Avery]

Does that kit use a garret as the low pressure? Specs? Research has shown that borgs are cheaper I just didn't want to step on any toes by saying you can build it right the first time spend a little extra coin and enjoy it, instead of having three failed chargers for the price of one garrett bb turbo you know. care to post pictures of the Mpi kit you have and mileage? Iowa lly

 

[IOWA LLY]

Yes the kit I'll be removing uses a GT4202 as the low pressure charger. I'm not sure on miles. Less then 70K but more then 45K.


Sent from my iPhone using Tapatalk Pro

 

[Robby Avery]

Pm sent Iowa lly

 

[MarkBroviak]

The price versus reliability doesn't justify the use of the Garrett's honestly and that is why you really don't see them being used. If they were worth it you would see them used. You really only see them used in the big boy setups like the Gt55's. If I was entertaining the idea of using them I would go straight to a Precision Turbo as they run circles around the same sized Garrett charger.

 

[paint94979]

Serious question... is MPI still in business?

 

[Robby Avery]

It would be cool if precision made a water cooled center section like garrett for long haul folks like me that will keep there trucks and drive them till the wheels fall off or the parts are discontinued lol :roflmao:

 

[Robby Avery]

Serious question... is MPI still in business?

Website is still there, presumably so?

 

[paint94979]

Website is still there, presumably so?

Their website is down and their number has been disconnected

 

[Robby Avery]

That's weird a couple of months ago it was up. I guess life happens and things change. The Facebook page still pops up but I guess that will soon be short lived as well. I don't like seeing quality craftmanship or businesses go out or unnoticed but things happen

 

[Summit_Rider]

Is this mpi as in mountain performance inc.? If so there pretty big into snowmobile and sxs turbo kits.

 

[Robby Avery]

Is this mpi as in mountain performance inc.? If so there pretty big into snowmobile and sxs turbo kits.

Unfortunately, its maximized performance Inc, I think the guy that owns it his name was Nathan someone correct me if I wrong thought. The last big kits I remember seeing that Mpi made were buck sprurill and John Kennedy when he entered the diesel power challenge. if you study the pictures of kennedys 02 mpi kit there are some serious hidden neat additions. like for instance who takes the time to lay out a kit that has a purposly places a insulated mount point for the a/c line to clean the routing of it over the high pressure charger. as well as follow factory lines and not just take a tubing bender and bend the a/c hard line at the compressor. just little detailed tweaks like that really create a quality kit to me and that's just one of the things there are many more hidden in the pictures on diesel power challenge pictures

http://www.trucktrend.com/events/di...esel-power-challenge-competitor-john-kennedy/


The proof is in the pictures hopefully the link works as I just copy and pasted it

 

[Ne-max]

I'll sell ya my triple kit..:thumb:

 

[Robby Avery]

I'll sell ya my triple kit..:thumb:

That would be nice, but is probably way to much for my dd. I've had to wait til I'm 30 now to enjoy entertaining the idea of change turbos let alone compounds. had to get through my 20s and grow up a bit before I started looking at serious power adders. Now with home, wife, little man, and trucks taking care of tithe, tool bills and toys are the things on my list:thumb: God and my family come first but daddy can have some toys too but we all know how that goes. On the plus side thought with little man being 15 months old now I'm looking to return to old technology and buy back the 1989 w250 single cab long box manual cummins I grew up in and restore it with him. that way he will have knowledge of mechincal as well as common rail fuel systems and such as well as learn how to drive a stick something most kids of todays generation have no clue how to do jmho

 

[Digmax]

Does that kit use a garret as the low pressure? Specs? Research has shown that borgs are cheaper I just didn't want to step on any toes by saying you can build it right the first time spend a little extra coin and enjoy it, instead of having three failed chargers for the price of one garrett bb turbo you know. care to post pictures of the Mpi kit you have and mileage? Iowa lly

Our experience on our c18 cat engines with Garrett chargers was not good. If you pushed them any past factory specs you would knock the thrust out of them. I tried a bw s510sx with a 360 degree thrust and that thing could handle anything you threw at it..... never did go out. Once again the Garrett was $5,000 and the bw was $3,000

Sent from my SM-G935V using Tapatalk

 

[Robby Avery]

Our experience on our c18 cat engines with Garrett chargers was not good. If you pushed them any past factory specs you would knock the thrust out of them. I tried a bw s510sx with a 360 degree thrust and that thing could handle anything you threw at it..... never did go out. Once again the Garrett was $5,000 and the bw was $3,000

Sent from my SM-G935V using Tapatalk

That's factory compared to a modified charger. Apples to oranges if you will. How would that test fair if say a 5541 was put against the 510. The same goes when its match in accordance to platform at hand the spec sheet only goes so far. everything has a failure point its a matter of how hard you want to push it. Cat never designed the acerts or standard single applications for major power they were pushed into a corner like all the big names by epa so as to become tier 1,2,3,4 emission compliant. if similar frame chargers were put into test sure the Borg would make more power as flow rate is higher however the longevity suffers were as the garrett may not flow as much but when properly match will long out live the Borg journal bearing. yes Borg has come a long way from years passed and they seem to be holding up good now but I'd much rather size it according to my build and run a garrett bb for longevity purposes that way I get my ROI out of it you know.

 

[Subman]

To answer the questions about MPI, owner/designer/builder Nathan Wright no longer builds turbo kits, he is a gun smith now. Still has his shop and might be coaxed into something special if he had the time and the truck there. That's total speculation on my part but he might. He had been fighting some health issues but seems to have that under control now.

 

[Digmax]

That's factory compared to a modified charger. Apples to oranges if you will. How would that test fair if say a 5541 was put against the 510. The same goes when its match in accordance to platform at hand the spec sheet only goes so far. everything has a failure point its a matter of how hard you want to push it. Cat never designed the acerts or standard single applications for major power they were pushed into a corner like all the big names by epa so as to become tier 1,2,3,4 emission compliant. if similar frame chargers were put into test sure the Borg would make more power as flow rate is higher however the longevity suffers were as the garrett may not flow as much but when properly match will long out live the Borg journal bearing. yes Borg has come a long way from years passed and they seem to be holding up good now but I'd much rather size it according to my build and run a garrett bb for longevity purposes that way I get my ROI out of it you know.

The exhaust temp didn't change much at all with the 510 the real issue with the heat was the factory tuning but I just know that the Garrett lasted about 3 to 500 hours at 1400 degrees and the 510 never failed in 3000 hours but yea you prob right. The thrust bearing design is the real dif

Sent from my SM-G935V using Tapatalk

 

[Robby Avery]

To answer the questions about MPI, owner/designer/builder Nathan Wright no longer builds turbo kits, he is a gun smith now. Still has his shop and might be coaxed into something special if he had the time and the truck there. That's total speculation on my part but he might. He had been fighting some health issues but seems to have that under control now.

Glad to here that wasn't sure what happen just had not heard or sent anything about Mpi in a long time. best bet would be to find a good used kit then when I start searching lb7 is gonna be the hardest kit to find