what's the different between gt40r and the gt40. which is better and can get the most performance out of?
difference between gt40 and gt40r
- Thread starter fwdcummmins
- Start date
A list to start with:
GT40:
-Journal Bearing (like your OEM)
-B/C of journal bearing it is said that it is easier to rebuild (by any reputable turbo shop)
-Oil Cooled only
-May spool a little slower than a ball beaing turbo
GT40R:
-Ball bearinged
-B/C of the ball bearing, it will most likely have to be sent in to Garrett to be rebuilt
-Liquid Cooled, just like your OEM
-Faster spool up
-May have a little louder whine than a journal bearing
Someone will correct me if I'm wrong on anything, and add on to the list I'm sure also!
GT40:
-Journal Bearing (like your OEM)
-B/C of journal bearing it is said that it is easier to rebuild (by any reputable turbo shop)
-Oil Cooled only
-May spool a little slower than a ball beaing turbo
GT40R:
-Ball bearinged
-B/C of the ball bearing, it will most likely have to be sent in to Garrett to be rebuilt
-Liquid Cooled, just like your OEM
-Faster spool up
-May have a little louder whine than a journal bearing
Someone will correct me if I'm wrong on anything, and add on to the list I'm sure also!
the gt40r what's the compresser wheel theym say can be bigger than 2.5"for street class. i was wondering what the size wheel the gt40r was thanks
GT40R
-Ball Bearing
-Water Cooled
-Cannot rebuild
-less turbo cool down time
-faster spool
GT4088R
88 MM Exducer 63.5 MM inducer
GT4094R
94 MM Exducer 67.8 MM inducer
GT40- 88 MM Exducer 64 MM inducer
-Journal Bearing
-Oil Cooled
-Can rebuild
-Same turbo cool down time as stock
-slower spool
-Ball Bearing
-Water Cooled
-Cannot rebuild
-less turbo cool down time
-faster spool
GT4088R
88 MM Exducer 63.5 MM inducer
GT4094R
94 MM Exducer 67.8 MM inducer
GT40- 88 MM Exducer 64 MM inducer
-Journal Bearing
-Oil Cooled
-Can rebuild
-Same turbo cool down time as stock
-slower spool
Last edited:
The gt4094r is rebuildable but thru garrett right the gt40 is a cheaper turbo and it can be rebuilt
If they are teching with a 2.55" plug you may be able to sneek the GT4088 with the 64 mm inducer. The GT4088R looks like it will fit nicely into the street legal class.