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A-man930

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Everything posted by A-man930

  1. Ever get this done?
  2. Detonation during initial tune --> blown head gaskets and possible damage to pistons Blown head gaskets --> overheat Overheating to 300* -->pistons swell in bores and fall apart oops.
  3. I've been wondering this as well
  4. These newer manifolds are soooo much better than the old fbody or truck pieces. Unless you're going with some wild cam or something you won't really benefit from shorty headers over a nice LS3 or similar manifold. Long tubes are a different story however.
  5. And would not cast manifolds be infinitely more "rugged",leak-free, etc than a tubular header? It's not like you'll be hurting for power...
  6. Here's another MJ guy interested in an LS swap. Take a very close look at 5th gen Camaro exhaust manifolds. All signs point to them fitting but I have yet to see someone try them for our trucks. Good luck!
  7. Some TLC and upgrades are coming soon! Starts with finally having functional reverse lights (new switch in the trans). Now to get the LEDs tied in.
  8. So the new rings move around nice and free in their respective grooves (lands) in the pistons right? Keep a wary eye out for any hairline cracks in the pistons. Did you perform a leak-down test or at least a dry/wet compression test before tearing into it? One has to wonder why the rings failed... damage on install? or major detonation? Sorry you're having troubles, but hey you're gonna be a pro at it! :rotf:
  9. Man pay close attention to the top ring lands when you're in there... fingers crossed!
  10. Custom dial decal? I've wondered if this was possible too...
  11. Looking at the schematic for my '90 it looks like the oil pressure and coolant senders are directly hooked to the cluster.
  12. I've messed with a bunch of these leakers out in the field. As far as I can figure, the only route for boost (or vacuum) to get into the water jackets via the intake manifold is the bank-to-bank coolant passages that are sealed up with the intake gaskets (2 spots I believe)... any other manifold leaks will either suck oil (from the valley) into the chambers or pressurize the crankcase when you're under boost; not cooling system issues. This is assuming the intake isn't cracked of course. I'm willing to bet you were pushing boost into the water jackets through the already blown head gaskets; you just finished them off with that good tune and the hard dyno pulls it took to get there. :yes:
  13. It is preventable. It was a combination of excessive coolant pressure, (above 27psi) because I had an overflow tank that was completely sealed (aluminum tank with screw on cap). Me running 10psi of boost, and it was probably horribly weekend from the multiple times I tried to tune it prior! Sent from my SAMSUNG-SM-G891A using Tapatalk Um, this sounds like the result of a combustion leak... Wether there's 10psi or 20psi in the intake none of it should be making its way to the water jackets. I'll go with your idea that it was damaged during your initial tuning attempts.Interested to see what you find when the heads are off. On a 60 degree v6 like the 2.8, 3.1, and 3.4 there is, the intake manifold is part of the heads. I'll try and take a picture tonight, it's a goofy motor. Sent from my SAMSUNG-SM-G891A using Tapatalk Huh?
  14. It is preventable. It was a combination of excessive coolant pressure, (above 27psi) because I had an overflow tank that was completely sealed (aluminum tank with screw on cap). Me running 10psi of boost, and it was probably horribly weekend from the multiple times I tried to tune it prior! Sent from my SAMSUNG-SM-G891A using Tapatalk Um, this sounds like the result of a combustion leak... Wether there's 10psi or 20psi in the intake none of it should be making its way to the water jackets. I'll go with your idea that it was damaged during your initial tuning attempts. Interested to see what you find when the heads are off.
  15. I daily drove a 5sp for an hr+ commute for years. Not being bored with the car/truck was always worth the "hassle" of the occasional traffic jam to me. In your case, that T56 with double OD would permit you to run some crazy deep gears and still keep the revs low on the highway; a recipe for the perfect DD in my book!
  16. Getting rid of that T56. Every other LS-swapped XJ/MJ has a stupid slushbox... You obviously know how to drive a stick, so why get rid of the most unique feature of your truck? idk, to each is own.
  17. We have a place in St. Louis http://www.saintlouisspring.com/
  18. Wow. Lots of misinformation in this thread. In short, something likely happened during the install or you've had some kind of catastrophic failure (i.e. main bearing). Do some research (from a trusted resource) on multi-grade oils and viscosities.
  19. Bummer, I've always wanted a set of the browndog mounts :cry: That being said, I don't know what my threshold of "vibration annoyance" really is. I've already got the less than ideal poly trans mount and stock rubber engine mounts combo and I survive...
  20. This is a new one for me... why did you install the pump in the first place?
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