Recent content by SBM4theW!n

Hey KnuckleDuster, what's goin So what's the recommendation for mechanical curve timing/ what rpm should it start kicking in? I haven't personally considered that part before, but it definitely makes sense.

I've got an afr gauge. Best 120 bucks I've spent on the car.

Just an update, 93 octane and a bottle of octane booster seems to be keeping any detonation at bay. I'm also seeing that Austin ranges from 500ft to 900ft of altitude (10.29 at 900ft is comparable to 10:1 at see level), which could be helping as well. I'm currently at 31 degrees total mechanical...

I don't have much experience with a 904, but I have an 833OD and 3.23s. The 4.10s might help, but with 3.23s the split between 1st and 2nd is pretty brutal. Between this and the aluminum case of the OD unit I'm starting to look for a older 833 nonOD trans. That said, I haven't had any issues...

Nevertoofast- can't wait to see the finished product. Good luck with the test and tune.

I'm in west cedar park, not far from Leander at all. My car's definitely more of a driver/ toy. It was my first car, and I've been consistently working on it. Would love to meet up, or do a cruise in!

Thank you very much. I had searched for mopar muscle clubs, but didn't come up with much. Just looking for guys that love to wrench. And nice Dart!

Just moved to Austin area from Denver. Any Mopar clubs/ shows in central Texas, or is Pistons on the Square your best shot? PS nice car!

I think the gas in the cylinder would be more an issue with a cold engine. I ran it up to operating temp before doing the running test, so the fuel shouldn't have had any issue vaporizing in the hot intake. While doing these test the exhaust would make your eyes sting a bit, but the compression...

Exactly, just for a comparison between cylinders showing 155 hot cranking and 175 hot cranking. Running they all show 130, and cold cranking they all showed 180s. I wish I knew why the front lifters were bleeding down. The engine is highest at the front of the car. But I guess it doesn't matter...

I just did a running compression test and all the cylinders were consistent (130PSI). The two high cylinders in the front of the engine were most likely the result of soft lifters as the running oil PSI leveled them all out.

That does make sense with peak lift deteriorating vs duration. I'm leaning towards the lifters bleeding down. I'm hoping that by doing a running compression test the oil pressure would be high enough to compensate for soft lifters.

I did squirt some oil in a couple of cylinders to see if the numbers would change (they didn't), and then ran the engine to get it warm which would have taken care of the excess oil in there.

The only thing I'm really concerned about is the cam lobes starting to go flat on the high PSI cylinders (1 and 2) and reducing duration and increasing dynamic compression which could lead to detonation (I think). I did take the deck slope into account, and I've recorded different static...

Checked out the valvetrain today and the preloads are fine. Even added preload on the intake valve of the high compression cylinder and it didn't change anything. Next I'll try a running compression test and then get a dial indicator/ degree wheel and check the cam timing.