I found the issue. The adjustable cam gear bolts came loose, so the exhaust cam was sliding all around. Applied some locktite, re-torqued, now it runs great.
I can't see any visual issues with the springs and retainers - then again, I don't really know what a problem with those would look like.Would I only be able to detect a problem with the lifters if the cam lobe is all the way up? I don't yet have the socket to turn the cam gear, so I just...
Immediately following a pull today, my car started stumbling really bad and making some rather loud knocking noises. The knocking is not consistent, and doesn't follow a particular rhythm. I've been told one (or more) of the lifters may have failed. I pulled the valve cover off and wasn't able...
Thanks everyone for all the replies. Looking at all this, I do think the SD table being inflated at certain points is likely the cause for the airflow inflation. Doing some quick math to back out that inflation, looks like I'm actually closer to 55lbs/min, as bastard DSM originally guessed...
Interesting. Well, I did do some of my fuel tuning in the config settings, so maybe that's causing discrepancy?Low to mid 50's sounds more reasonable - do you have any math or logic behind that?
Couldn't find any solid info on this, but I've heard the airflow measurement in ECMLink isn't accurate if you're running speed density. Well, I'm running SD, and my log (attached) says I'm flowing 67lbs/min at 25psi on my 6-blade hx40 on the .70 a/r housing. I'm just starting to break in my 9:1...
I've had this problem before. Turned out to be a slit in a vacuum line. As the car heated up, the inside of the slit in the rubber hose would sort of melt and fuse together (it was close to the manifold), and seal air properly after it cooled down. But when the boost pressure eventually reopened...
My advice would be to stick with your evo 3. In my opinion, far more downsides than upsides to running a tubular manifold for most people. They run hot, crack, and most require significant rework to the downpipe (which can cause other issues).My preference is to run a ported 2g or evo3 on my...
I've had it with cheap tubular manifolds cracking, so I bought this one from MAP:I'm trying to get it on this week - spacing is a bit tight with the hx40, so we'll see.
I just recently got a new long-block 9:1 2.3 stroker and a JMF SM IM. Turbo, injectors, ignition setup all the same as with my last setup/tune on my stock 2.0 w/ stock IM. I basically kept the tune the same, as I figured that'd be enough to just get the car drivable.At cold start, car idles...
I'm going from a stock compression 2.0L to a 2.3L .30 over 9:1. I'm curious how I can expect my peak timing to change.I've searched around a bit, but haven't been able to find consistent info.For example, if I was running 35psi (50/50 e85/91) from an hx40 on my 7.8:1 2.0 with 17* peak...