Is this a GEMS or A Bosch?

Knightspirit

Knightspirit

Well-known member
Sep 22, 2019
251
84
Mount Shasta, CA
Got a lead on a couple of basically free engine blocks with heads - but I need to know which kind they are - they are from a discovery apparently:

Block 1.jpg

Block 2.jpg

I am guessing this is Bosch? Of course I need the GEMS...
 
Knightspirit

Knightspirit

Well-known member
Sep 22, 2019
251
84
Mount Shasta, CA
ERover82 said:
Bosch

Sensor mount plate can be swapped and welded into place.
Click to expand...
Hmm - so I would need to acquire a GEMS sensor mount plate, but otherwise nothing is different? I can get these for almost nothing, so if they are useable for my D1 with just that change - then I should go ahead and grab them. Any links to the process of changing out the plate?
 
ERover82

ERover82

Well-known member
Nov 26, 2011
3,916
458
Darien Gap
Will Tillery may be able to supply a sensor plate from a dead block. Lookup the swap procedure. You'll find GEMS to Bosch. Do the reverse.
 
J

JohnnoK

Well-known member
Mar 19, 2017
193
19
Cape Town, South Africa
Knightspirit said:
OK - I understand that the heads are not interchangeable. What do I look for on the heads to know if it is or isn't SAI? Are all Disco 2's SAI or just certain years?
Click to expand...
The heads will fit, there may be slight differences WRT bolt holes for ancillaries, but they will fit.
Differences will be in the manifolds, controls and plumbing, the basic engine remains the same.
 
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