I was wondering what is an acceptable RPM range for a Bridge port motor to idle at, how many Inches of vacum should i expect to pull at idle?

 

my half bridge idled at 1000-1200 and pulled about 13 inches of vac

 

Whats the diffrence between a full bridge port and a half bridge?

 

Primaries and secondaries are bridge ported on a full and only the secondaires on a half.

 

i have a full BP with very LARGE ports, it idles at 2200rpm and pulls around 10-12Hg-in. i've seen some N/A BP's at the track and they idle in the 3000+ range!

 

2200 RPM!!!!


WOW dosent that drive you nuts??

 

I normally set the HBP's I do to 1200-1300rpm... and about 10-12" vacuum after the fact.

B

 

1200-1300 is livable. But 2200 would drive me nuts

 

Thats what mine was pulling....

 

Helped a customer install a 13B N/A full bridge that idled around 1300rpm. We didn't cut into the rotor housings so the bridge port is not as large as it could be. This engine has one new rotor housing and a used one the looked new. Makes great compression.