Post edited 6:39 pm – December 8, 2009 by jknutter

Hey the machine shop that worked on Shaun’s motor gave me seven oil filters that he had laying around. They are by Pro Gauge model# PG0-111 and fits:
AMC
2.5L 1980-84
GM
196, 229, & 231 1976-80
151 (after 3-1-79)1979-81
V8-255 1980-81
V8-301 1978-81
Chevy & GMC
V6-173, 200, & 231 1978-87
V6-229 1980

Cross Referance: AC – PF-47, Fram – PH3387A

I can bring them to the XMAS party if anyone wants them.

JK

Sure  I'm at work right now so I don't have the work order – but I'll try from memory.

First of all the motor blew #4 piston so the wrist pin wore through the sleeve into the water jacket.  The block other than the sleeve was spared any further damage but we found out later the cylinder head was cracked.   I do not have a break down on individual prices but the total bill including machining, engine kit, aftermarket parts, and labor to complete the lower end was $1600.  The price was high because the 2.5L isn't in big demand so the parts cost more than average.  He said the same job for a small block chevy V8 would be about $500 cheaper…  Unfortuately this Jeep still has to pass emissions so our options were very limited.

Here is what was done: 

Engine Block: Clean, oven bake, magnaflux, punch out old sleeve, press in new one, bore all cylinders 0.30 over, press wrist pins into new pistons, grind and polish crankshaft, then they installed the cam bearings, pistons, rod & main bearings (I had them do the bearings because it's been 20 years since I have played with plastic gauge) and freeze plugs.

Cylinder Head: Clean, magnaflux (on two heads, original one cracked) machine head surface, valve journals, and lap valves.  Reinstall valves with new seals and springs.

Here is what was included in the engine kit:

Gaskets, freeze plugs, oil pump, Meling camshaft (with .288 lift), cam, rod, and main bearings, pistons and ring set, wrist pins, lifters, valve springs and seals, timing gear set with tensioner,  and I'm sure that I forgot something…

Basically we have a new engine – every part other than the crankshaft, connecting rods, push rods, and rockers has been replaced.  I asked the machinist to squeeze the most ponies he could out of this this little power plant.  So they milled down the head and bored the cylinders 30 over.  They choose a cam that will produce the most torque at mid-rpms so we should get most we can out of this little 2.5L on the trails.  It's back in Shaun's Jeep and is running like a champ!  He only has about 100 miles on it so far and says if feel much stronger than the tired version.  Our next project is gearing, then possibly lockers, and some rubber.  Next years wheeling season should be a blast!

Anyone for the filters? If not it's ebay time…

$1,600 machining, labor, & parts – see above post if you want a breakdown of everything… Motor running better everyday but Shaun says tranny is now slipping – does it ever end???