Engine Noise - afraid to ask

[mwilk012]

If you buy a new long block they’ll generally have a significant core charge.

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[AlgUSF]

Detroit is very doable. Just don’t get lost there…. Just sayin

AMW is a bit outside of Detroit, from the GOOG it looks half way between Detroit and Frankenmuth which is essentially in the country.

 

[mwilk012]

Looks to be ~600$ CAD 420$ USD, have to do more research of course. Not sure this is the correct engine but should be similar

Hey that’s not bad if it’s the correct/current part number. GM cores are crazy. $2000 for a transmission started a few years ago.

 

[Shellbird01]

Went with a short block rebuild, looking for recommendations

- which head gaskets and bolts?
- replace chains, guides and tensioners ?145k miles
- going with 5w20
- new idler, water pump serpentine
- will find a break in procedure
- anything else?

 

[roaniecowpony]

Went with a small block rebuild, looking for recommendations

- which head gaskets and bolts?
- replace chains, guides and tensioners ?145k miles
- going with 5w20
- new idler, water pump serpentine
- will find a break in procedure
- anything else?

Did you mean "short block "? A short block means you don't get heads, intake manifold, and sometimes no front timing drive, and oil pan.


With 145k , new timing and freshened heads would round it out nicely. Oil pump is a maybe. New plugs, maybe have the injectors cleaned. She'd be top shape.

 

[mwilk012]

With a short block, send the heads to the local machine shop. You can pick up a set of head studs if you want, prodigy performance carries them. 5w-20 offers no performance benefit over 0w-20. Replace the timing set.

Just one opinion, of course.

 

[roaniecowpony]

Yes, to the new idlers, tensioners, and water pump. I'd do the radiator and heater hoses too. The radiator hoses are stressed more than the heater hoses, just due to the larger diameter. So, if you don't want to change all of them, at least change the large radiator hoses....oh, and the short little coolant hose from the oil filter housing that comes out of the back of the valley, under the intake manifold. You would have to pull the upper and lower intake manifolds to replace that if it blew.

 

[roaniecowpony]

In Canada, I'd stick with a 0wXX. If you want thicker oil for the hot weather or more film strength, etc, a 0w30 or 0w40 will do that without affecting the low temperature start-up pumpability rating.

 

[Shellbird01]

In Canada, I'd stick with a 0wXX. If you want thicker oil for the hot weather or more film strength, etc, a 0w30 or 0w40 will do that without affecting the low temperature start-up pumpability rating.

I’m surprised, but trust you and mwilk012 I thought lowering 5w was only to improve fuel economy, 0W it is

 

[mwilk012]

I’m surprised, but trust you and mwilk012 I thought lowering 5w was only to improve fuel economy, 0W it is

Oil weights are split into two grades, cold performance and hot performance. The w means winter, not weight. 0w-20 and 5w-20 are the same viscosity at operating temperature, just different when cold. Thinner oil when cold helps get oil to the cam phasers and lifters faster.

 

[roaniecowpony]

I’m surprised, but trust you and mwilk012 I thought lowering 5w was only to improve fuel economy, 0W it is

The first number in front of the W is "winter" rating for cold temperature pumpability.

The number after the W is the viscosity grade for operating temperatures. For this , the oil must meet viscosity requirements at 40C and 100C fo the grade specification. There is a range for grade and not all 30 grade oils are the same viscosity. For example, one 30 grade may be almost as thin as a 20 grade and another may be almost as thick as a 40 grade. So if you're shopping oils , it may be worth checking the datasheets of oils.

 

[roaniecowpony]

Is there anything more I can do to ensure min cam wear, I do oil at 5k with Mobil 1 full syn and filter. is there merit to the Baxter adapter to avoid dry starts. I’ll likely go back to a Mopar oil cooler to keep temps low. Or due to the design is the intake cam now a maintenance item.

Thanks!!

I think we're all just guessing. Without knowing what Stellantis knows as it relates to the TSB, I just don't think anything we do will have a significant effect. That said, I'm not giving up on providing better boundary layer protection by changing to a higher viscosity oil and changing it often. I'm using a 12.0 cst @ 100C oil and changing it between 2000-3000 miles. Maybe it will prolong the inevitable until I am done with the Jeep.

 

[Shellbird01]

I think we're all just guessing. Without knowing what Stellantis knows as it relates to the TSB, I just don't think anything we do will have a significant effect. That said, I'm not giving up on providing better boundary layer protection by changing to a higher viscosity oil and changing it often. I'm using a 12.0 cst @ 100C oil and changing it between 2000-3000 miles. Maybe it will prolong the inevitable until I am done with the Jeep.

Ahhh 0wxx, feels like 30 or 40.

Likely a Material / hardness process, “rocker design change”. They should consider the psv location as well, vent to atmosphere….. lol

 

[mwilk012]

The question that needs to be answered is why is it always bank 1 intake cam that is going bad? I believe it is a manufacturing process problem and not design, but it is something that engineers need to identify and address properly before we can trust it.

 

[roaniecowpony]

The question that needs to be answered is why is it always bank 1 intake cam that is going bad? I believe it is a manufacturing process problem and not design, but it is something that engineers need to identify and address properly before we can trust it.

Yes, the FCA QA and engineering should have investigated the issue and found the root cause and then formed corrective action to correct production going forward. Then theres the question of what to do about products in service. There could be different treatment of products under warranty, and those beyond warranty.

The issue may occur inconsistently, which would explain why only some product is affected.

I spent a good part of my career in aerospace chasing engineering and production problems and getting them fixed.

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