Thread: MFI in a 930
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jcge jcge is offline
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Join Date: Sep 2007
Posts: 500
You need an LDA

You need a Ladedruckabhangeigervolllastenschlag (LDA for short)

Translates roughly to "manifold boost pressure compensator", and acts on the MFI compensation lever instead of the barometric cell.

You'll find them in your 935 and 917-30 parts bins (or on other Bosch inline turbo diesel pumps)

I believe 65cc/500 strokes at 1 bar WOT will get you into 935 territory (but you might need 7mm or 7.5mm plungers (ala Aston V8) to get there, but I've not been able to confirm spec from a real 935 pump....)

Diesel LDA parts


935 pump (or replica....using 912/917 cover plate)


And this pump looks to me to be a 935 pump modifed for NA use (removed LDA and no baro cell or temperature compensation), but shows the position of the LDA's actuation pin above the compensation lever inside the regulator housing.



Or something like this (in concept) spotted at a well known pump rebuilders...



John

Last edited by jcge; 01-12-2010 at 06:01 PM.. Reason: plunger size
Old 01-12-2010, 05:04 PM
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