JDM b18 Hatch

Let me start by telling you what is done to my car. I have a 95 CX with a 94 Integra LS swap. It has a fully built head: Crower 403 cams
Crower valve components
heavy port and polish
7 angle valve job
Ferrea valves (oversized)
Skunk2 cam gears
A.E.M. Fuel Rail
RC 310 fuel injectors
B&M Fuel Pressure Regulator
B&M Fuel Pressure Gauge
4-1 stainless steel header
Skunk2 Intake manifold
I also have the SCI MSD setup with Blaster2 Coil, and I was wondering if you could tell me why my car keeps on cutting out at high RPM's? It acts like it is not getting enough spark or fuel, I can't tell which. When it cuts out I have to pat the gas to get it to rev, but the thing is, it don't always rev. Sometimes the car will just die, and it will not start anywhere from 5 to 30 min. It is starting to **** me off majorly and I hope some of you can help me out.

SE7EN3S

What kinda of RPM's?

JDM b18 Hatch

anywhere from 5500 rpm to 7000 rpm. I normaily turn it 8000 rpm's.

mx621

check that msd, i know poeple that have problem with them, check ur plug gap, if gapped too much can cause missfire at high rpms, i allways gap them on the tight side. if this does nothing start with a tune up, cap, rotor, wires, plugs. good luck

JDM b18 Hatch

I used to have a turbo Eclipse and my Honda feels like my Mitsu when fuel cut out

mx621

i have never heard of anyone reving a ls head past 74-7500rpms max, thats sounds scary, going to 8k. i wouldnt trust those open style rockers.

mx621

my buddy just had this problem on his ls turbo eg hatch, it was the msd. remember there american made, so they will expletive up.

SE7EN3S

You have Crower Valve Springs too? It's not floating valves, is it?

JDM b18 Hatch

no. I have Crower dual Valve springs

mx621

nothing to do with the valve springs, it the rockers that cant take the revs, not the springs. there a open style, the only thing that holds them down is the cam, they are not atached to anything, like the vtec rockers

turbotime

sounds like a classic dying ignitor problem to me. Replace your ignitor/distributor and youll be good.

I had the same problem, are your rpms cutting out as well?

JDM b18 Hatch

so what do I do about it? I mean the head was built to handle high revs and make lots of power. How do you change the problem with the rockers???

JDM b18 Hatch

yes majorly

turbotime

i HIGHLY doubt its valve float and HIGHLY doubt its the rockers as well.

sounds like an ignition problem to me for sure

turbotime

what ecu are you running? stock?

JDM b18 Hatch

could it possibly have anything to do with anything in the fuel section? What all should I change in the ignition???

JDM b18 Hatch

chipped P06, single cam non-vtec with Mugen chip

turbotime

all i know is my car had the same symptoms (random cutting between 5-8k) in any gear, and it was the dizzy....

JDM b18 Hatch

did you replace the whole dizzy? or just the internals???

mx621

i diddnt mean that the rockers are the problem, i just mentioned 8k was alittle high for the design of the head and people have broken rockers before and are a weak link in a ls head. my money is on that pos msd is the problem

turbotime

i replaced the whole dizzy, but afterward i learned you could replace just the ignitor. I would look into that.

DOes it feel like a rpm limit type cut? just way random and always in high rpms? Also does your tach cut? Like the rpm needle drops and pulls back up all random like?

JDM b18 Hatch

Have you ever experienced fuel cut??? that is what it feels like. when it cuts out, the car acts like it just wants to die. I have to tap the gas to keep it from dying. and yes the tach needle drops very fast.

turbotime

hmm that sounds different from what i was experiencing, mine just feels like an rpm limit.

JDM b18 Hatch

what do you mean by rpm limit???

mx621

rev limiter is what he means