popping through the exhaust at 4500 rpm or so.. HELP!

[Zedyone_kenobi]

Not sure. Even when I was running 9:1 at idle when the car barely idled it still leaned up at part throttle until it popped. Keep in mind guys you never pull more vacuum than you do at idle. At part throttle you are about at 7 in of vacuum. But at idle you are approaching 19 in.

[Zedyone_kenobi]

You know this is crazy guys right! I am about to replace the entire induction system, entire ignition system, and entire engine to fix this. And it is at least remotely possible that this may still happen. I am not sure if I want to laugh hysterically or cry!!!!! Hahaha

[Zedyone_kenobi]

UPDATE:

Just for kicks, I tested the dizzy ground last night. I took off the cap and unscrewed the ground strap to the pertronix plate. I hooked up my multimeter on that strap, and on the bolt that goes into the block. I got 0.1 Ohm or 0 Ohm. So my ground to the block is spot on.

Then I checked my resistance through my coil. 2.9-3.1 Ohms. Check

Then I checked my resistance through my ballast resistor. It is brand new from MSA. It got the resistance through it form 1.8 to 6.1 Ohm. I touched the leads half a dozen times and never got the same answer twice. Pretty weird.

Also with the system powered (but engine not running, I get 12.1 volts on both sides of the ballast resistor with no jumper installed.

It really does not matter much, as I bypass it anyway.

Here is one question for you guys though.

how much voltage is the pertronix suppose to get. Should it get the full 12V. meaning should I tie it into the power from the ignition, or should it get the power after it is past through the resistor?

[d240zx2]

Bypass the resistor!!!

[Zedyone_kenobi]

I received a huge order from MSA today with some lovely new triple webers to play with! Oh the joy!

[Travel'n Man]

I gotta ask - did you bypass the resistor?

[Zedyone_kenobi]

It's been bypassed since day one. I have had a 3 ohm coil in there for a year.

I just was curious if the Petronixs could get too much voltage.

I Installed a 1.5 ohm coil today and put the resister back in line but I may try it bypassed tomorrow with the 1.5 ohm coil anyway. What is the worst that could happen

By the way car popped with 1.5 ohm coil in line and with 3 ohm coil with resister bypassed. Have not tried 1.5 ohm coil with resister bypassed. I am sure coil can handle it

Edited April 1, 2012 by Zedyone_kenobi

[Zedyone_kenobi]

Just want to update this thread, as it was the genesis if my triples review thread.

I am about a week away from starting up the car with triples! We will see what the air fuel ratio is when I get her going, of course the chances of the jetting be right out of the box is next to Zero, but it should get running and at least move fine enough. My gosh I miss driving her.

[Zedyone_kenobi]

Webers are on and the car is running. (see post in carb forum for full details)

Long story short, let me say this clearly...

NO MORE PART THROTTLE POPPING

I will sacrifice a Datsun OEM thermostat to the WEBER carb gods.

[madkaw]

So it's obvious that your SU's were junk- but I will still give you 50$ for them;)

[Zedyone_kenobi]

Junk is a strong word. They were just not happy on my engine for whatever reason. I still LOVE SU's and their simplicity and their ease of tuning. I think they are elegant and a great OEM carb.

[240260280z]

so it's obvious that your su's were junk- but i will still give you 50$ for them;)

ROFLROFLROFLROFLROFLROFLROFL:bunny: ROFLROFLROFLROFLROFLROFL

Edited April 19, 2012 by Blue