SB

iTrader: (1)

As a heads up on better idle, carbs that come with a PCV hook up usually idle better with a pcv, as the carbs are calibrated for it's use.

Bill 3

Is there anything different internally on the carb? I understand the baseplate has the PVC port which I am using for my vacuum gauges. I have opened the secondary butterflies slightly (but still in the idle circuit) to help with the idle air, plus I drilled the primary butterflies.

MILD THUNDER

iTrader: (3)

Plug the rear powervalve, and go up two sizes in primary, then retest.

Bill 3

I am here looking for advice, and I am not trying to second guess. Trying to learn. Let me ask....

This would put me at 90 primary with PV and only 87 secondary without PV. I thought the PV was worth 6 or more jet sizes. I suppose it make sense wanting to lean the WOT some and add more to mid.

Just seems odd that the primary would be almost 10 bigger than secondary if taking PV into account.

Since I am second guessing myself, I think I will verify my secondary opening point before I change anything....

MILD THUNDER

iTrader: (3)

Have you also considered staggering the pv's? Like say running an 8.5 in the primary, and 2.5 in the secondary?

Baja Rooster

iTrader: (1)

Unhook your secondaries and see what effect it has.

Bill 3

Trying to pay attention and remember so many different things regarding rpm, throttle position, vacuum and AFR... I really haven't gotten to that point yet. I was so concerned about being lean, that I have done is upping the jets. I figure it is better to be fat and slowly lean it out and fine tune from there than the other way around.

Good idea. Dial in the front half and then make the back half work with it.

MILD THUNDER

iTrader: (3)

Make sure you figure out the progression rate if you are gonna disconnect the secondaries

SB

iTrader: (1)

On quick thought it sounds fine but Don't do it.

Without the secondaries opening, you will reach the point on the primaries that airflow going thru the primaries will become much larger than it was designed for, draw on the boosters harder than normal, and typically go real rich. So, you jet and etc for that, then hook up the secondaries (which lets more air in) and your primaries are too lean and you fuked yourself.

This is why it is very good, in your circumsstance, to know when your secondaries are opening. You can tune the primaries by going tojust before the secondaries open.

Bill 3

After thinking about it, it is easier to just verify the throttle position when opening of the secondaries starts to happen and not mess with taking any linkage apart.

Thank you all for the input. I will verify the AFR before the secondaries open and adjust accordingly then I will do the same in the secondaries. Then I will adjust or remove a power valve if necessary to get my WOT where it needs to be.

Thank you all for your input!