3 replies to this topic

[stevegrabba]

Hi guys,

 

7 porters and high duration cams are notorious for producing a low manifold vacuum figures in mercury inches etc.  However, some brake servo's are of course vacuum assisted.

 

Has anyone fitted an electronic vacuum unit to operate the servo? 

Did you run it from an ignition or manual switch to a constant live?

 

Some electronic vacuums on the market seem to require If run from the ignition did it draw 10 to 15 amps, would this rob the ignition coil and effect engine performance if run from an ignition live?

 

Just after some ideas and thoughts thanks guys!!

 

[nicklouse]

http://www.theminifo...cuum-generator/

 have a read

[stevegrabba]

http://www.theminifo...cuum-generator/

 have a read

Thank you....this is actually my car now that I bought from Graham a month or so ago.  Its a lovely car and Graham, is a great guy who has worked some magic on it.  Its even better to read the history and logic used by Graham when making this little modification. 

 

For me this solution needs a little additional tweak though due to it seemingly being run on the ignition live circuit.  Even though its intermittent and only when vacuum is needed, however 15 amps is a big current draw and hence may be better on its own switch live.

Edited by stevegrabba, 11 June 2018 - 02:52 PM.

[nicklouse]

ok Silverbullet has recently done an install as well.

http://www.theminifo...52#entry3543610