Solex 40 PHH help

[Tim of Capitola]

Thanks all, it's running so well now at WOT that I don't want to mess with the idle.  Maybe on a rainy day.

 

Cheers

Tim

[Hans]

Hey, zinz, how does one compensate for the fuel added to the bowl when the cover is lifted and the float drops? Wasnt there some procedure using the access cover rather than main cover (a la dcoe)?

[zinz]

I remove a jet from the top of the carb and use that access hole for the “dip method”

[Hans]

And then extrapolate the distance between the access plate surface and the line in the outside? I thought there was some spec for measuring the actual level by going to the bottom of the bowl with something porous. My articles are out in the cold garage!

Edited December 24, 2018 by Hans

[Einspritz]

On 3/14/2018 at 3:57 PM, Tim of Capitola said:

I've got some NGK BPr6es coming today from Amazon. The plugs in the car were BPR6ETX's, very dark and strong gasoline odor

 

I don't know anything about PHHs, but you shouldn't mix and match resistor plugs with the bakelite resistor ends of stock wires of a stock ignition system.

 

They should be BP6ES' or similar or you should not have resistor wire ends, as on later cars or other permutations of ignition systems.

[Tim of Capitola]

Interesting: This is what NGK said:

 

As the resistor spark plug has an incorporated resistor, some people think that it has adverse effects on start-up, acceleration, fuel economy and emissions. However, this is wrong. It does not affect engine performance so don't hesitate to use it.

 Resistance vs. power
 

[Son of Marty]

Right but you only need 1 resistor per wire and the stock BMW ends have a resistor already built in so you don't need/want a resistor plug, if you have non stock wires you'll need to measure them for resistance before deciding on a resistor or non resistor plug.

[Tim of Capitola]

Oh, so what is the result if you have resistors in both?

[Son of Marty]

Less energy at the spark plug = less spark at the plug.

[Flunder]

On 3/14/2018 at 9:00 PM, jgerock said:

There is an Alfa Romeo guy on ebay who sells Solex 40PHH parts - very reasonable prices.

Venturis, gaskets, jets.

 

Is there a factory recommendation for Solex jets to be used when fitting the factory 300 degree Sport Cam?

[jgerock]

43 minutes ago, Flunder said:

Is there a factory recommendation for Solex jets to be used when fitting the factory 300 degree Sport Cam?

I would start with the stock 2002ti jets then upsize the main jets. I did this with my 292 Schrick cam engine.