i went to go get my car tuned today at the whip factory and we are having problems in the high rpms......it wont rev past 7000-7500ish rpm. it pulls fine until then and just hits brick wall. because my car is tucked and im using bulkhead connectors on the firewall we thought that it might have to do with the sheilding on the dizzy wires, also because we think that some electrical noise was messing up the dyno. but i went home and reran new grounded sheilded wiring straight from the dizzy to the ecu and still no luck. could something else be causing this break up or could it maybe be the tune somehow? hes tuning it with neptune and set the rev limiter to 8800 and double checked everything to make sure nothing else was causing the problem. we also installed new wires. im totally lost and out of ideas, anything would be helpful right now.

 

gap and heat range?

 

any more info? Stock distributor, etc?

 

its a stock dizzy and the plugs are gapped to 20 they are the 7's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicskater &raquo;</TD></TR><TR><TD CLASS="quote">its a stock dizzy and the plugs are gapped to 20 they are the 7's</TD></TR></TABLE>have you tried to swap it out with a different one?

 

how much power/boost? change if you go to 8's?

 

we havent swapped out a different one yet, and i am running an external coil......last year i made 400whp and now trying to break 500.

 

20 seems like a pretty close gap to me, but I don't know if it would only affect it in the high rpm range

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicskater &raquo;</TD></TR><TR><TD CLASS="quote">we havent swapped out a different one yet, and i am running an external coil......last year i made 400whp and now trying to break 500.</TD></TR></TABLE>The coil was working properly before? I'm leaning towards the coil now

 

yea the coil was fine.....its just weird because the car runs like a champ until it hits 7ish grand then it feels almost like a 2step or something.

 

20 is real low. im running over 30psi & 25 is where my gap is. with #8 plugs.

aslo what ignition coil are u using & a 6a or what.

aslo how old is the coil? over a year its time to change it anyway

 

its msd blaster coil

 

Well if the coil was working before, it probably means the wiring for it etc is fine. I would try a new coil and open the gap up a little bit on those plugs.

 

would a coil really just work fine though until a certain rpm and then just die out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicskater &raquo;</TD></TR><TR><TD CLASS="quote">would a coil really just work fine though until a certain rpm and then just die out</TD></TR></TABLE>it could yeah. does the tach go crazy when it happens?

 

i think so....i wasnt in the car when he was doing the pulls but i believe he said something about the tach bouncing around

 

thast normally when u know the coil is bad. aslo if u are using a msd 6a or something that can also effect your signal.

change the coil.

 

but it could be the dizzy as well. btu deff sounds like ignition not plug gap or anything.

if it were plugs it would just run like *** not fall on its face & buck on the dyno

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicskater &raquo;</TD></TR><TR><TD CLASS="quote">i think so....i wasnt in the car when he was doing the pulls but i believe he said something about the tach bouncing around</TD></TR></TABLE>if the tach is going crazy the ignitor is the problem a lot of the time. If the coil and cap are old I would replace them just to be sure, it couldn't hurt anything and you will have fresh parts. I'm not sure how much wiring is involved with swapping in a different dizzy when you are using an external coil, but if it isn't hard I would try switching to a known good dizzy to see if the ignitor is the problem

 

Go to a one step colder plugs..for 500whp you should definately go to a #8 NGK plug

 

well i did a check on my coil with an ohm meter and everything checked out good so im thinking its probably my ignitor.......anymore input?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicskater &raquo;</TD></TR><TR><TD CLASS="quote">well i did a check on my coil with an ohm meter and everything checked out good so im thinking its probably my ignitor.......anymore input?</TD></TR></TABLE>If a coil is shorting out a resistance check is going to show normal #'s

 

o ok.....is there anyway to tell if a coil is shorting out

 

get a new coil. preferably oem honda.

same thing happened to me with a brand new blaster ss. went back to stock.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicskater &raquo;</TD></TR><TR><TD CLASS="quote">o ok.....is there anyway to tell if a coil is shorting out
</TD></TR></TABLE>look for carbon tracking, but sometimes it's hard to spot especially if it hasn't been doing it for a long time