boost and coil ?= no power

[revinkevn]

I'm pushing 21lbs of boost on an msd street /stock replacement coil. I was running a Jacobs ultra but it shorted. The car ran 970 @ 140, tonight @ etown I only did a 10 90 @ 125 and it broke up top end 1st through 3rd. I think it's not pushing enuff volts @ high rpm(over 5000) is it having the spark blown out?(no pun int.) also what coil is proper for a novi 2000 with msd 7al2?

 

[97modgt]

Can't answer your questions but I wish I was running that much boost.

 

[revinkevn]

I appreciate the props......but I get email alerts from important threads I post, so please only post if you have helpful input on this 1
thanks-seriously not trying 2 be a dick, im just majorly disappointed @ all the hard work with lil 2 show 4 it but a shitty high 10 sec run

 

[Wicked One]

Found this.

When you have erratic spark I 'd look for a cracked magnet in the magnetic trigger, if it's a Ford style (MSD replacement) magnetic trigger and you have installed the magnet upside down it does the same thing, or if the trigger wires are reversed.

For the coil, I found this. It is the MSD HVC-2.

When the mad scientists at MSD were creating this 7-series ignition coil they pulled all of the good stuff out of their Pro-mag 44 coil and stuffed it into this one. The HVC-2 Coil produces 48,000 volts at a stout 2-amps with only .016 ohms of primary resistance! It utilizes an iron U-Core design with a segmented bobbin molded from Rynite and wound specifically for incredible voltage capabilities, lightning quick rise time and lengthy spark duration. The Rynite housing features far spaced brass primary terminals and a well protected secondary tower for increased spark isolation. The housing is completely potted with an epoxy compound for vibration resistance with mounts. For use with MSD 7-Series Ignitions.

Hope this helps, I will keep looking for a solution.

 

[revinkevn]

thanks, I'm pretty sure this is the solution. .....I hope. Now I jut realized I melted my shift cable. A few people told me that the coil I'm using is only good to a certain rpm.(im spinning 7200)Also the miliseconds between pulses are slower than higher end coils. Im going to order the proper coil, the one you reccomended to me is the same as the one I looked at in the etown speed shop, and see how it goes.

 

[MaximumRisk]

what's your plug gap? you can try closing it up a little

 

[revinkevn]

Nah, that was pre set on the dyno. I'm pretty sure it's the coil.I have one coming tonight. La'rocca's dynoed this car and had all that set. The only thinbg I changed was the coil. So tonight i'll know 4 sure-thanks

 

[dsblk93gt]

Sounds like spark blowout to me for sure. What are you running for an ignition...