Turbocharger part numbers

[MrDangerUS]

Bob,

Trust, but verify... LOL

0.42 a/r compressor is 60 trim on s4s and 55 trim on s4.

 

[sailorbob]

The 0.63 AR turbine housing was used on the '80 to '92 models with the external wastegate.

[MrDangerUS]

On 16/03/2019 at 07:57, sailorbob said:

The 0.63 AR turbine housing was used on the '80 to '92 models with the external wastegate.

Correct!

From 1980-88, Lotus used the Garrett T3 turbocharger. It has, turbine  .63 a/r,1.80 inducer (46mm), & compressor: .42 a/r, 1.72 inducer

Here is the info you were looking for direct from Mr.Esprit :-
The Turbocharger on the USA Turbos with Bosch K Injection (86, 87 & 88)

are Garrett T3, Lotus Part No. C910E6372F (Listed in Lotus Parts Book)
Specification as follows :-
0.63 A/R Turbine, 1.90” turbine exducer,
0.42 A/R,  1.72” compressor inducer
55 Trim Comp Wheel

 

S300 turbo PN# 452106-1

 

.

[sailorbob]

These are the specifications I found for the C910E6372F turbine wheel; inducer dia. 59.03 ± 0.127 mm, exducer dia. 45.72 ± 0.127 mm, tip height 9.779 ± 0.127 mm, blades 11, 60 trim, journal bearing dia. 10.1498 - 10.1575  mm, stem dia. 6.3398 - 6.3475 mm

[MrDangerUS]

I re-discovered this thread whilst trying to identify turbo core number. Nice to have all numbers in one place.

 

Interesting piece of history:

Cliff Garrett founded a company in 1936 which came to be known as Garrett AiResearch or simply AiResearch. Garrett AiResearch designed and produced a wide range of military and industrial products for aerospace and general industry. It focused on fluid controls and hydraulics, avionics, foil bearings, turbochargers, aircraft engines, environmental control systems for aircraft and spacecraft, and other products. In 1968, after a merger with Signal Oil, Garrett became part of Signal Companies. In the mid-1980s, Signal merged with Allied Chemical & Dye, and became AlliedSignal, becoming an automotive, aerospace and engineering company. The Garrett Aviation division was sold to General Electric in 1997 and is now part of Landmark Aviation. AlliedSignal merged with Honeywell in 1999, where the turbocharger business resides today.

 

Edited May 31, 2021 by MrDangerUS