Seems that one of the problematic parts when converting from Bosch CIS to EFI is adapting from the stock (if using) throttle bodies to the stock (if using) air filter. The Distributor can be gutted, parts can be cobbled together and parts can be fabricated but it is always nice if OEM parts can be reused. Here may be some parts that may help.
A number of years ago (12+) I pulled some parts from various cars ... just in case. Here are pictures of one:
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The parts are from a VW of unknown model with Bosch CIS.
- The round part fit over the Fuel Distributor where our filter fits. As such, if you turn it over it fits right on the DeLorean air filter. This part can be used to make a nice 90 degree bend from the filter towards the throttle body
- The tube is "oval" for all practical purposes and the ends measure about 3.75 x 2.25
- The other end has rubber adapter that measures about 3.75 x 2.25 on both ends. It also includes a number of ports one of which could be used for IAT, the other could be used for an idle air filtered air source.
HELP... Can someone, who has the TB sitting outside the car, measure the throttle body's inlet side (CIS Distributor side) and reply back? Hopefully it will be about 3.75 x 2.25! I need to keep mine running for a while or I'd provide the measurements here.
Clearly the VW assembly will not work as is. But it doesn't take much to imagine how the middle tube could be adapted. Or a custom tube could be created to fit between the two boots. Even if the round boot is the only part used it is still a nice part to use.
The VW part numbers (taken from parts)
- Oval air filter adapter 067133357
- Tube 067133373
- Oval adapter 067133649
I also pulled a Volvo air tube (# 127 651) that fit on the Volvo's CIS Fuel Distributor. It is rigid plastic and as such does not slide over the DeLorean air filter but could be used if a sleeve was used to connect to the DeLorean filter.
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Lest someone thinks that the mounting tabs will work if flipped and used under the DeLorean air cleaner... they won't. They are not symmetrical (mirror images) and when the part is flipped thy will not fit. Also, this part may not fit between the runners and will require lots of further fab work. It is included for completeness... maybe someone wants to play with one.