Rebuild Magnum 360 Motor
#22
So today I got all the sludge out of the block that I could and I cleaned the gasket surfaces. Currently, all the machined surfaces are covered in motor oil. The cross-hatch pattern is visible in the cylinder bores. I'm going to take the block to a machine shop to get it cleaned and checked. This is my first engine rebuild. What machine work should I get done?
I'm pretty comfortable with working with the top end of an engine, but the bottom end is new to me. Any tips on rebuilding it? Or am I better getting someone else to do it? Please be kind, I've never dealt with a bottom end before.
I'm pretty comfortable with working with the top end of an engine, but the bottom end is new to me. Any tips on rebuilding it? Or am I better getting someone else to do it? Please be kind, I've never dealt with a bottom end before.
I'd send a PM to this turkey.
#24
Remove all of your freeze plugs and dig the sludge out from around each cylinder before you take the block to the machine shop.
Read through this thread for some ideas on rebuilding your motor: https://dodgeforum.com/forum/2nd-gen...the-cheap.html
Be sure to perform the intake plenum fix using these parts: http://www.ebay.com/itm/DODGE-JEEP-ALUMINUM-PLENUM-PLATE-BELLY-PAN-318-360-5-2-5-9-MANIFOLD-REPAIR-KIT-/200922215893?pt=Motors_Car_Truck_Parts_Accessories&hash=item2ec7e5b5d5&vxp=mtr
+1 on using a new double roller timing chain during the rebuild, along with a timing chain tensioner: http://moparcarparts.com/P5007709-Ti...ar-Performance
Purchase a good set of performance plug wires, a new distributor cap (with brass inserts) and rotor - once you install the motor, getting to the distributor is no fun, so best to ensure you have good parts there.
Read through this thread for some ideas on rebuilding your motor: https://dodgeforum.com/forum/2nd-gen...the-cheap.html
Be sure to perform the intake plenum fix using these parts: http://www.ebay.com/itm/DODGE-JEEP-ALUMINUM-PLENUM-PLATE-BELLY-PAN-318-360-5-2-5-9-MANIFOLD-REPAIR-KIT-/200922215893?pt=Motors_Car_Truck_Parts_Accessories&hash=item2ec7e5b5d5&vxp=mtr
+1 on using a new double roller timing chain during the rebuild, along with a timing chain tensioner: http://moparcarparts.com/P5007709-Ti...ar-Performance
Purchase a good set of performance plug wires, a new distributor cap (with brass inserts) and rotor - once you install the motor, getting to the distributor is no fun, so best to ensure you have good parts there.
#25
Yeah, I'm definitely doing a new timing chain set and distributor. I haven't looked at the heads yet, and I'm betting they are cracked. The truck sounded good when I bought it, it sounded really smooth running. I knew it had problems, the owner claimed it was a bad intake manifold gasket, but I figured it was a head gasket, in addition to the intake manifold. The more I tore it down, the worse this engine looked. I didn't pay much for the truck, and I don't mind doing the work to fix a vehicle, so I got it. Yes, I do have my work cut out for me.
#26
Replace the heads. Don't bother spending money on them.
Pull the freeze plugs. Take block to machine shop. Have them hot tank it, clean it excessively well, check bores for taper, and out-of-round, crank journals straightness, block decks for flatness. (this is all pretty standard, and a good machine shop will do this as a matter of course.)
I would be real tempted to have the machine shop assemble the short block for you. (crank, rods, pistons, cam) and make sure everything specs out correctly. You only wanna do this once.
Pull the freeze plugs. Take block to machine shop. Have them hot tank it, clean it excessively well, check bores for taper, and out-of-round, crank journals straightness, block decks for flatness. (this is all pretty standard, and a good machine shop will do this as a matter of course.)
I would be real tempted to have the machine shop assemble the short block for you. (crank, rods, pistons, cam) and make sure everything specs out correctly. You only wanna do this once.
#27
#28
Hopefully a better season than last year.... of course, that shouldn't be difficult.
#29
Ok, I found a machine shop I'm going to use. I spoke to several today, and I found one that has reasonable prices, and they guy seems pretty familiar with the engines in these trucks. Thinking about the Clearwater / Odessa EQ heads with the 2.02 intake valves, maybe this cam. I don't know what all I'll be replacing just yet, and funds may better be used elsewhere.
#30