New Borgwarner turbo options found

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lostkeys
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Joined: Wed Jun 29, 2022 4:15 pm
Location: Texas
Isuzu vehicle(s): 1984 Diesel LS 4x4

New Borgwarner turbo options found

Post by lostkeys »

Greetings all,

My turbo attempted to shred itself yesterday so I am in the market for a better turbo. It appears that Borgwarner has a turbo which may be of interest to some, especially if your turbo is dying a terrible death (mine is). Their SB1G line is similar to the GBC 14 but is T25* flanged!
Of interest are part nos 313295 (0.35 compressor A/R), 313296 (0.46 compressor A/R).
The GBC14 compressor AR is 0.52. The stock turbo A/R is 0.63.
Sb1G lineuo.jpg

Borg Warner SB1G (313295) data:
compressor inducer:34mm
compressor exducer: 46.99mm
Turbine inducer: 34.21mm
Turbine exducer: 40mm
Compressor A/R: 0.35
Trim: Not available
Turbine A/R: Not available
Overall length: 169.4mm

313295 compressor map: (Sorry, this is the only info they gave me)
sb1g compressor mpa.jpg
313296 Compressor map:
313296 comp map.jpg
GBC 14 data:
compressor inducer: 34mm
compressor exducer: 46mm
Compressor A/R: 0.52
Turbine inducer: 39mm
Turbine exducer: 36mm
Turbine A/R: 0.45
Overall length: 162mm
GBC-14-Comp-map.jpg
For comparison GT1548 compressor map (I think)
gt1458 compressor map.jpg
gt1458 compressor map.jpg (77.38 KiB) Viewed 222 times
Original GBC-14 post by others viewtopic.php?t=126684.

* -Ish Could be conversion error, BW gives these in inches. Inlet dimensions 72.88mm x 40.01mm between studs. Standard T25 73mm x 40mm.
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