Perkins/Garrett specs?

[eclipsh]

I recently got my hands on a Perkins turbo #2674A402. I've been digging around the net trying to find details on it. All I can find so far is that it is based on a Garrett GT3571S. What I can't find is anything else. It is a twin scroll housing with a built in waste gate and a six bolt exhaust. Oil feeds only on the cartridge, no water.

I don't know Garrett turbos so I'm a little handicapped. What I'm trying to find is what the map looks like and expected power ranges/spool. Any help on that front would be great.

I have found stuff that has the last three digits different, stuff in the 300's range. Not sure if that is significant or if it is just model changes.

Also, the turbo is designed for a Perkins 6.0L diesel with a cross reference number 709942-0009 for a CAT turbo linked below.

http://www.catturbo.cn/TRUCK_PERKINS.asp

It suggests a range of 200-450 HP. That is for a diesel though, not sure if the same numbers apply to gas.

 

[JusMX141]

Built for low-boost, low-RPM diesel engines that operate at a constant RPM like generators, Bobcats, or other power equipment. These turbos normally have a larger a/r turbine housing than a gasoline turbo of equal size, so I doubt this turbo would reward you with an amazing powerband on a DSM.

Actual wheel / housing specs would speak more than a model number for a turbo which manufacturer has very little information to offer.

 

[eclipsh]

Can you clarify "not an amazing power band?" Should I pull the housings and measure stuff? The turbo was free so it is worth a little time investigating.

 

[JusMX141]

The most common issues when attempting to run such a turbo would be "lots of unnecessary lag" and "not enough airflow to offset the unnecessary lag".

Your best bet would be to offload this turbo then apply that money toward something more proven, unless you're adventurous.

 

[eclipsh]

, ok, thanks. I just wasn't sure if you meant top end would suck or what with your earlier statement.

I don't have the time/money for adventure on this. I'll give the turbo back and wait to get a Holset.

Thanks for the help.

 

[JusMX141]

The weak link in the GT32/35 center housing is without a doubt the thrust system. The 270* thrust plate that comes in those turbo was never meant to support the shaft loads that 20+psi will sustain, so they tend to develop in/out play very rapidly which can damage the rotating assembly almost immediately. I've seen one 360* thrust system in a GT32 in my time, but I have no idea where it came from or who built it....the part was definitely aftermarket.

You'd most definitely need to do a true twin-scroll T3 manifold with that turbo if you wanted to keep lag to a minimum, and those are costly to buy / time-consuming to build.

The only other thing you could do if you really wanted to run it is get in touch with PTE and see if they have any DSM bolt-on turbine housings available for it.