Tuesday, July 15, 2014

No Seconds Changes - MD109259 Oil Jet Replacement - 4G15T Forged




After the short lived forged build - /the-good-bad-forged-build-ii-under-knife.html
We didn't give up hope, we hope to see it alive soon....




A few parts were needed, mainly the oil pump, near big end and main bearings and a few smaller bits -


Replacement Parts:
1 x 1211A001 CASE ASSY,CYLINDER BLOCK,FR (oil pump) ~$300
1 x MD183238 GASKET,OIL STRAINER $5
1 x MD324702 GASKET,THERMOSTAT CASE $5
4 x MD109259 OIL JET,CYLINDER BLOCK  $20ea




< used some 4000+ grit emery to clean some high spots off. I used some tape to pull it around the journel.

1 x MD620908 O-RING, ENG OIL COOLER INR $7
1 x head gasket 1005A886 ~$80

Thermo [i just want the rubber seal on it]? Sorry can’t buy that separately
MD337408 THERMOSTAT KIT  $20 in stock



Cleaning the block lots and lots >















MD109259 were tapped out from above the mains.
And tapped back in via the main cap. I was thinking I needed to freeze them to make them fit, but went in relatively easy









< small pin a used to tap the oil jet in with.
The OLD oil jets definitely felt different, the check ball inside, i was pressing it with some TIG wire

















Had to measure from main cap to the block deck, I came up with 200.92mm, I have no idea how much which removed when we got it decked.

Cleaning everything to bolt in the crank and rods
Main caps - 65ftlbs (3 step torque seq)
Rod Caps - stretch 0.0055"





Oil clearance 0.05/0.038mm





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