so like 2 months ago the LD9 in the Z jumped timing real bad. skipped like 3 teeth, i expect it smashed a few valves because it has 0 compression across all cylinders and doesn't run. i've been having some trouble with the motor for the past year anyway, started seeing metal in the oil in like nov. 08 and it's been feeling like it's been losing power, but i didnt have the time or money at that point to toss in a motor, or to get a crank kit so i kept running it until it skipped timing. i was actually expecting it to throw a rod, but it didnt. it's bad, it's probably partially my own fault, but live and learn rite? i have indeed learned a whole hell of a lot working on this car over the past 5 years of ownership, and i feel like i'm not done with it yet. and as many say, a breakdown is only a reason to rebuild.
in my mind it's not worth fixing the top end with the extent of damage unknown, and in all likleyhood it's got a spun rod bearing (metal in the oil), so i've decided to just replace the motor. i'm not going to do anything big at all, the budget isn't there for that, so i've limited it to what i'm comfortable with and what i think will still suit my needs, which it should do quite well. it's purposely thought out to not put me in the poor house, but still keep me happy. i'm anxious to get it back on the road already. my goal is before summer, maybe middle of spring, but as long as the other car keeps running, i have no real date it HAS to be finished by. whenever it gets done, it gets done. take my time and do it rite.
here's the list of what i've decided to go with and some pics of what i have so far.
-want to find a low mile 00+ short block, clean it up a bit and put it in
-going to have this spare 96-98 head i have cleaned, checked for cracks and get a mild P&P done
gonna rebuild it with
-NEW keepers retainers and valve springs from GM(all in transit)
-TTR(SI) stainless steel valves
-TTR bronze valve guides(will be installed when the head work is done)
-NEW Clevite lifters
-if i can i will re-use the Secret cams in the motor now (intake cam checked out good, exhaust cam may have damage, haven't removed it yet) if i have to, i'll either get a new Melling exhaust cam, or buy another used set of secret cams. (old pic)
now i know some people will flat out tell me to go with the HO cams. i would like to, but i did the research and the combination of a surprising lack of Quad4 cars in the very few junk yards near me, and the expense of new parts has basically made me decide to stick with secret cams. i'm pretty solid on that for the time being. besides its not like i can't upgrade if i ever want to
-New Melling oil pump
-Spec stage3 clutch from TTR
-Stillen 11# Flywheel (i think its the same as unorthadox?)
-Fel-Pro head gasket set
-NEW Fel-pro head bolts- i know studs are availible, but in all honesty i dont plan to ever have the head off after i put it on. and if i ever remove the motor again it'll be to go BIG. many many miles down the road though.
-all new Cloyes timing set with the one piece tensioner, becuase i like it better.
-i have a brand new water pump laying around that i'll put on
-i'm planning on deleting the A/C. removing the compressor, condensor, and the lines leading in and out of the firewall. everything still works but i rarely use it, even in the summer, so its going. replacing the compressor with a brand new A/C delete pulley (24574519)
and now for the most expensive part of the new build, lol.
i recently had to pirate the exhaust off of the Z and put it on my '95 2.2 beater.(Jegs 2.25" cat-back piping with a large Dynomax superturbo muffler) so i need a new cat-back at least. it wasn't originally in my plans, but @!#$ happens. i'm gonna go all out on this one and get everything new from the Header-back.
-Bill& Stan's iperformance 4-2-1 Header with 2.5" Magnaflow cat
-Bill& Stan's iperformance 2.5" cat-back with Magnaflow muffler.
i was gonna go with a megan cat-back but after some looking around and really thinking about it, i'm gonna go with the iperformance one. it looks very subtle, which has been my whole thing from the get-go, and if it doesn't sound good or i dont like it resonators are cheap, or i can always swap out the magnaflow for a dynomax like i had.
-i will re-install the Venom Intake manifold i have sitting around
-i also have an OEM 58mm TB sitting here as well, which is untested, and looks like @!#$(looooong story), but hopefully itll do it's job.
eventually i will need to get a tune as well. it's not number 1 on the list, but it will get done, hopefully before this time next year i can find someone good with HPtuners to do it up rite.
i have a nice overhaul planned for the rest of the car as well, which i may or may not get to next winter. depends upon funds, as always.
TEAR DOWN PROGRESS:
i only have weekends to work on tearing it apart, (i work mon-fri 8-6 and sat 9-12. usually around 47+ hours a week) and it's in a small garage with 0 room to move around. not to mention its been cold. i have to roll the car outta the garage anytime it needs to get off the ground, and you can only fit 2 cars in my driveway, so i'm kinda waiting till the snow stops to do that kinda stuff. progress on teardown has been slow, but it'll get there.
it was nice out, and warm yesterday (mid 40's) so i decided to begin with the teardown. started with this
and like an hour and a half later would up with this. i love air tools.
removed the intake piping, TB, intake manifold, EGR pump, entire ignition system, starter, accessory belt, alternator, dipstick, brake booster vacuum tube, removed the fuel rail and left it hanging on the side, removed the P/S pump and left it on the side, pulled and labeled most of the harness(who knows what i'll remember when it's time to get it back together). placed everything in a nice neat little box.
i tore apart the spare head a while back. cleaned and kept everything on the side.
i still have a lot to buy, track down and a lot more to tear off of the old motor. like i said, it's nothing big, but it will definately keep me busy and my wallet slim through spring. i'll update with pics whenever i get to work, or new parts show up.
and heres one of my favorite pics for good measure.
thanks for looking
Edited 1 time(s). Last edited Sunday, January 17, 2010 3:32 PM