boost&r.p.m

[hcox10]

hi
i just bought a grand national t type digital dash hobbs switch new.
the switch has two little screws on it does any body know if they are to set boost and rpm if so how do you do it. i have 1984 t type
thanks much harold.

 

[Turbo Riviera]

If you bought a replacement switch for the stock one there are no adjustment.

If you bought an aftermarket plain ol' hobbes switch, then the set screw in the top is for adjusting boost level that the switch activates at. The two screws on the side are for electrical connections. The two screw posts are connected when the desired boost level is reached.

No RPM at all.

 

[hcox10]

boost&rpm

hi
when i am at wot the bottom light and top light on the dash light up does that mean i am at full boost.
thank you very much harold

 

[Turbo Riviera]

Sounds like all is well... That is what it should do.

A mechanical gauge would be your best bet for determining actual boost, but it sounds like it's fine.

 

[Chuck Leeper]

Dash gauges, eithr rpm, or boost are pretty much useless. As mentioned, get the "real" gauge.