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Old Jul 4, 2015 | 08:11 PM
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Thatguy's Avatar
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From: denver co
Default Noob question
sorry to ask a dumb question but i keep seeing people post about gem engine or gem engine 96 disco. what are they referring to i can't find any thing searching.
thanks
Jeff
 
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Old Jul 4, 2015 | 08:46 PM
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GEMS is the engine management system. Bosh is the later D2 /Range Rover P38 system. 14cux is the earlier (pre OBD2) system.
 
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Old Jul 4, 2015 | 08:46 PM
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Gems was engine management system that was used after 14cux and before Bosch
96 is likely noted to explain that it is fuel injected, as 94 & 95 d1 was sporting a dizzy
 
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Old Jul 4, 2015 | 08:51 PM
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From: denver co
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Originally Posted by dusty1
Gems was engine management system that was used after 14cux and before Bosch
96 is likely noted to explain that it is fuel injected, as 94 & 95 d1 was sporting a dizzy
so I have two 96 discoveries, how could i tell the difference between the Bosch and the Gems visually?
 
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Old Jul 4, 2015 | 08:53 PM
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Bosh didn't come out till mid 99. Both should be gems
 
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Old Jul 4, 2015 | 09:03 PM
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What he said^
Still gems just fi 96 as opposed to earlier 94/95
 
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Old Jul 4, 2015 | 09:29 PM
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GEMS engine will have a big black intake sitting above and between the cylinder banks.

The Bosch engine does not.
 
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Old Jul 4, 2015 | 09:53 PM
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Gems has aluminum plenum, Bosch is plastic, its noticable

Gems will say 4.0 or 4.6 on plenum
 
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Old Jul 5, 2015 | 12:11 AM
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ok, so their is nothing special,its just what people call the engine management system that came on the 96-99 discoveries
thanks
 
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Old Jul 5, 2015 | 09:07 PM
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Sagem/Lucas Generic Engine Management System (GEMS)
 
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