T70-1 vs. Stock Turbocharger
Comparison


COMPRESSOR SIDE

COMPRESSOR SIDE

Features of Note:
  • This picture shows a stock 1986-87 turbo (left) and a T70-1 (right)
  • Notice the HUGE compressor housing on the T70-1
  • Both are 3 bolt turbos
  • Notice that the 70-1 has fewer fins on the wheel with more pitch and "twist"
  • Integral inlet bell on the 70-1
  • Large (3") bell on the 70-1
Features of Note:
  • This picture shows the T70-1 on the left and the stocker on the right
  • Notice the HUGE 70 compressor wheel again
  • The T70-1 wheel is MUCH taller, with more pitch and "twist"
  • Integral inlet bell

SIDE

COMPRESSOR SIDE

Features of Note:
  • This picture shows a stock 1986-87 turbo (right) and a T70-1 (left)
  • Notice the T70-1 has a much larger turbine with a coarser pitch and a slight curve to the blades
  • Both are 3 bolt turbos
  • The wastegate hole has been slightly enlarged over stock on the T70-1
  • You can see how thin the downpipe sealing area is, due to the large wheel size (top left in the photo)
  • The 70-1 has a larger A/R housing, so it is taller and a bit larger than the stock housing
Features of Note:
  • This picture shows a stock 1986-87 turbo (right) and a T70-1 (left)
  • With the turbo assembled it is very clear that the compressor housing is MUCH larger than stock
  • The T70-1 has an integral inlet bell
  • The compressor housing on the T70-1 is much taller and has much more area
Features of Note:
  • This picture shows a stock 1986-87 turbo (right) and a T70-1 (left)
  • The center sections are very similar
  • You can see the larger turbine housing
  • You can also see the dramatic difference on the compressor side

Submitted by:

Larry Johnson
justav6@flash.net