Genesis 2.5T engine vs. Hyundai's reliability

[CanadianGV80]

This is not a thread to project the reliability of this engine, more so just observations I have found looking into the engine. It is much to early to figure out if this is a good engine or not.

Just wanted to make some notes. Upon looking into the 2.5T engine currently in the Genesis line-up it is a cousin to but not the same engine as the 2.5T in the Hyundai line-up. First of all it is a RWD engine vs. the FWD one of the latter. This is not where the differences stop and I think the improvements to this engine will help prolong its life.

Going forward the Genesis 2.5T engine will be called FR G4KR
Going forward the Hyundai 2.5T will be called G4KP

• Upon a tare down diagram the FR G4KR used in the Genesis line up has both GDi and MPi fuel injector setup. This means less carbon build up, and paired with higher premium of gas should keep the engine running nicely. In comparison the G4KP only uses a GDi fuel injection system and has been prone to carbon build up issues.
• 10.5:1 compression ratio on the FR G4KR vs. 10.0:1 compression ratio on the G4KP used in the Hyundai line-up. This higher compression ratio could be taken both ways. Higher stress which comes with a higher compression ratio usually would correlate less engine life. However, with the higher compression in this engine it should push out carbon build up and hopefully the engineers strengthened the aluminum composite engine block.
• There is a timing chain guide in the diagrams I was looking at for the FR G4KR. This should prevent premature timing chain wear and tare. A fix over old Hyundai designs such as the 2.4L engine. I couldn't find a diagram of the G4KP to check for a timing chain guide.

I just took some time looking into this for peace of mind and hope someone finds this information useful. I am sure there are a lot more tweaks between the two engines but just the three points listed above seem to make these different classes of engines.

 

[tCizzler]

According to every article I have seen written, every forum, and a statement from Hyundai. All of their 2.5t engines (Hyundai, KIA, and Genesis) are MPI and GDI, not just what they put in the Genesis models. G4KM, G4KN, G4KP, AND G4KR.

 

[Commerx]

Interesting to the above comment on the fR G4KR, I am in the USA. Is your recommendation to use 93 octane gasoline

 

[Lisettechi]

Interesting to the above comment on the fR G4KR, I am in the USA. Is your recommendation to use 93 octane gasoline

You don't have to use 93. While it is recommended, it is not required, so you can use 87 if premium is too expensive. You lose some horsepower, but it will not damage the engine. As long as you are using top tier gas, it will help keep your engine clean regardless of octane rating.

 

[Commerx]

You don't have to use 93. While it is recommended, it is not required, so you can use 87 if premium is too expensive. You lose some horsepower, but it will not damage the engine. As long as you are using top tier gas, it will help keep your engine clean regardless of octane rating.

You seem to have a ton of knowledge around these engines. So a side bar. The oil filter used are all the same

You don't have to use 93. While it is recommended, it is not required, so you can use 87 if premium is too expensive. You lose some horsepower, but it will not damage the engine. As long as you are using top tier gas, it will help keep your engine clean regardless of octane rating.

thanks for the reply your knowledge is impressive. A side bar ? I got into a tangle or a fiasco around getting an oil change done on my genesis 2.5lgv80. Nearest dealership is 3 hours away no where to be found is an oil filter at local auto stores anyway. Dealership tells me I need Hyundai part no 26350-2t000. That same part no is available via Kia. I believe the gv80 2.5l engine is the same as in the Kia stinger 2.5l So are all the oil filters the same and am I ok to use the Kia filter on the gv80. Thanks in advance

 

[Lisettechi]

You seem to have a ton of knowledge around these engines. So a side bar. The oil filter used are all the same

thanks for the reply your knowledge is impressive. A side bar ? I got into a tangle or a fiasco around getting an oil change done on my genesis 2.5lgv80. Nearest dealership is 3 hours away no where to be found is an oil filter at local auto stores anyway. Dealership tells me I need Hyundai part no 26350-2t000. That same part no is available via Kia. I believe the gv80 2.5l engine is the same as in the Kia stinger 2.5l So are all the oil filters the same and am I ok to use the Kia filter on the gv80. Thanks in advance

Genesis and Kia share most of the same part numbers. AFAIK, it should be the same part.

 

[Commerx]

Genesis and Kia share most of the same part numbers. AFAIK, it should be the same part.

Last filter ? Promise. Will the Wix oil filter