ileagleracing
Supporting VIP
- 328
- 191
- Sep 27, 2007
-
OKC,
Oklahoma
I’ve got a small claims court date coming up with the shop that butchered my car build, and since I’m not an expert in engine specs and such, I was hoping that you guys might be able to school me a bit on how to respond to any “excuses” that they are sure to come up with.
A bit of history: they had the car for nearly 3 years and at the end I pushed the car onto the trailer, put the “built” short block in the back of the Jeep, got most of my parts back, and had a different shop finish the build. The new shop finished up the project, but before starting the motor, they drill spun the oil pump, did a compression test, then pulled the pan to find metal debris. Prior to the rebuilt this first factory oversized / stock internals motor had suffered a crank failure (sheared in 2 pieces).
After pulling the motor apart the 2nd shop gave me the following notes regarding the build of the short block:
Findings on the block ****** *********** built were the following:
Connecting rods were not new, they were used Manley rods. Rod #4 had heat markings on it and had damage that reflected a spun bearing. The thrust on the rod #4 had a .014 taper ground into it and you can see where it was hand ground to fix the chamfer. Then they glass beaded the rods to hide the damage. Rod end cap #4 was tough to align the dowels and a quick check with a vernier shows rod is roughly .005" shorter
Block, pistons and rods measured in as follows:
Bore size 3.3655" (+/- .0005")
.005-.006" PWC (very lose clearance)
Cylinders within .0005" out of round (normal)
Cylinder bores were ball honed (crosshatch angle is very steep)
Deck surface was never resurfaced
Main line torqued to 60ft lbs ARP mains
Bore gauge set to 2.402"
#1 main .001" oil clearance
#2 main .0015" oil clearance
#3 main .0015" oil clearance
#4 main .001"-.0015" oil clearance (.0005" taper)
#5 main .001"-.003" oil clearance (.002" taper)
All main oil clearances were set way to tight
Found main caps were grinded down/butchered for some sort of repair attempt to block
The taper in the mains is probably from the machine shops mandrel having taper in it and not using it properly and not over stroking it.
Ring end gap was found at top ring: .019", 2nd ring .016", oil ring .036" (normal specs although I like to see 2nd ring with a bigger ring gap than the 1st ring gap)
Crank measured with less than .0005" runout (normal)
Suggest to send rods to Manley to confirm above issues with rods as a second opinion. The block is salvageable if repairs were done to it to make right but we used the other block provided to customer w/matching crank. The old crank is in good shape ready for use. The pistons can be reused in new motor build. The rods should not be used in new motor build due to needing a new rod and attempting to match weight to the other 3 plus all new rod bolts to stretch to spec matches or can exceed the cost of just buying new rods depending on how much balancing time is needed to match.
A bit of history: they had the car for nearly 3 years and at the end I pushed the car onto the trailer, put the “built” short block in the back of the Jeep, got most of my parts back, and had a different shop finish the build. The new shop finished up the project, but before starting the motor, they drill spun the oil pump, did a compression test, then pulled the pan to find metal debris. Prior to the rebuilt this first factory oversized / stock internals motor had suffered a crank failure (sheared in 2 pieces).
After pulling the motor apart the 2nd shop gave me the following notes regarding the build of the short block:
Findings on the block ****** *********** built were the following:
Connecting rods were not new, they were used Manley rods. Rod #4 had heat markings on it and had damage that reflected a spun bearing. The thrust on the rod #4 had a .014 taper ground into it and you can see where it was hand ground to fix the chamfer. Then they glass beaded the rods to hide the damage. Rod end cap #4 was tough to align the dowels and a quick check with a vernier shows rod is roughly .005" shorter
Block, pistons and rods measured in as follows:
Bore size 3.3655" (+/- .0005")
.005-.006" PWC (very lose clearance)
Cylinders within .0005" out of round (normal)
Cylinder bores were ball honed (crosshatch angle is very steep)
Deck surface was never resurfaced
Main line torqued to 60ft lbs ARP mains
Bore gauge set to 2.402"
#1 main .001" oil clearance
#2 main .0015" oil clearance
#3 main .0015" oil clearance
#4 main .001"-.0015" oil clearance (.0005" taper)
#5 main .001"-.003" oil clearance (.002" taper)
All main oil clearances were set way to tight
Found main caps were grinded down/butchered for some sort of repair attempt to block
The taper in the mains is probably from the machine shops mandrel having taper in it and not using it properly and not over stroking it.
Ring end gap was found at top ring: .019", 2nd ring .016", oil ring .036" (normal specs although I like to see 2nd ring with a bigger ring gap than the 1st ring gap)
Crank measured with less than .0005" runout (normal)
Suggest to send rods to Manley to confirm above issues with rods as a second opinion. The block is salvageable if repairs were done to it to make right but we used the other block provided to customer w/matching crank. The old crank is in good shape ready for use. The pistons can be reused in new motor build. The rods should not be used in new motor build due to needing a new rod and attempting to match weight to the other 3 plus all new rod bolts to stretch to spec matches or can exceed the cost of just buying new rods depending on how much balancing time is needed to match.