I’ve been thinking about making a plenum chamber for the 850 for the last year or so. But I did fancy cutting up a ME7 inlet manifold as the runner are not parrallel so when at the local BKV meet I noticed that the 960 inlet manifold was made up in two half’s, a small section where the injectors are then a rubber sleeve which joined onto the main part of the manifold.
So I started combing eBay for a 960 manifold. Found a guy that was prepared to sell me the section where the injectors are. Once it arrived it was a case of cutting off cylinder number 6.
The runners where extended to 6” and 3mm plate was drilled so the runners fitted through the plate, once they where welded the end of the runners where radiused to form bell mouths. The main body of the chamber was formed out of some more 3mm aluminium and welded up. A 3” aluminium 45 degree was welded on to move the throttle body down under the air filter.
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