SBD inlet manifold vacuum pipe

[dumpycorsa]

Hi. I'm just about to drill and tap a hole into my inlet manifold for the brake servo vacuum. The vauxhall one is too big to fit straight into the side of the SBD inlet due to the size of the lug on the side of no.4 intake. Just wondering if anyone has done this and if so what size adaptor did you use. The vauxhall thread that goes into the bottom of the inlet on the c20xe looks approx M14 (i haven't checked this though). Is there a plug available that goes from M10 on one side to M14(if thats the correct size) on the other so I can fit the original vacuum hose?

This is the side view of the manifold and the lug that I'm going to drill and tap

http://i223.photobucket.com/albums/dd90/dumpydave/sbdinlet.gif

:thumb:

[Dar]

Full instructions on page 9 - download zip file (http://www.sbdev.co.uk/Info_sheets/Fuel_injection%20_Set_up_instructions/2.0L%20Taper%20instuctions%20Print%20All/2.0L%20Taper%20Set%20up%20instructions%20080130.zi p)
Drill a 8.75mm diameter hole. Tap - 1/8@ BSP taper thread for the server connector.
Drill 2x 1/8" diameter holes to meet the 8.75mm hole one hole each from port nos 2 & 3.

[trackdaynova]

Also pics here from when I did this
Got my new manifold from the chap I bought the TB's from
http://i136.photobucket.com/albums/q161/neocapture/nc0465.jpg

Took it straight around to Wilcox Competition Engines to have servo return drilled and tapped into it, and 2x 1/8th holes drilled in diagonally to create airways between cylinders 2 and 3 to prevent pulsating
http://i136.photobucket.com/albums/q161/neocapture/nc0467.jpg

Building bodies onto manifold
http://i136.photobucket.com/albums/q161/neocapture/nc0468.jpg

TPS added
http://i136.photobucket.com/albums/q161/neocapture/nc0469.jpg

All on, with 90mm trumpets, still awaiting backing plate and filter
http://i136.photobucket.com/albums/q161/neocapture/nc0470.jpg

Top side (using current injectors, so they're not on yet, as i'll swap them over)
http://i136.photobucket.com/albums/q161/neocapture/nc0471.jpg

Gave them a blasting with brake cleaner, all cleaned up now
http://i136.photobucket.com/albums/q161/neocapture/nc0473.jpg

[dumpycorsa]

Thanks for taking the time to help guys. Unfortunately I'm fitting carbs not throttle bodies (my mistake for not mentioning this) so my inlet is different meaning I can't drill between intake 2 and 3. The only place it can go is in the side of inlet 4 (unless I'm missing something)? I'll give sbd a ring in the morning as I have alternator bracket issues aswell.