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HybridZ

miss stuble hits wall at 5k


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tried searching all i found was turbo related threads and rich was the cause.

f54 short block

n42 head.

msa stage 3 cam (270/280 advertised)

compression is 175 all cylinders.

blaster 2 coil

dissy from 76 l28

new cap new rotor

new wires

new NGK 6es's gaped at .044

timing set at 16 btdc idle.

same thing happens at 20 btdc and 13 btdc

I forgot to hook up vac advance maybe this is the cause? I just relized this

 

triple mikunis setup for this engine combo, I'll note the jet sizes sunday afternoon after I go mess around with it for a while

holley 110 gal/hr fuel pump regulator set at 5.5 psi idle.

 

timing light shows miss at all rpm's

engine idles extremely rough like it has twice the cam it reallly does

it smothes out 2-4.5k rpm (still missing but smoother)

it hits a wall at 5k load and no load

I don't get it; could it really be the vac advance,

I have an MSD 6AL I'm going to install sunday. I'll note any efffects; improvements

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76s30,

Is your Fairlady the one that was for sale in Ripon?

 

Yes sir it is. it was just toooo clean a z to pass up. still shiny black underneath ( well after 40+ hours or cleaning it was) a little rust on the core frame but i took care of that.

I absolutly love the car.

 

 

Thanks for all the compelments, though i really wish i had decluttered under the hood before the vid.

the vid was open header I've been terrorising the industrial park my shop is in.

 

I still had a light load/ part throttle miss, so

 

I installed the MSD after the video. now it takes 5-6 turns to start instead of one and it misses even worse. It back fires out the carbs while tring to start. what gives I changed nothing just installed the box?

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