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-   -   Which Engine is more realable 2.5GT or 3.0R? (http://legacygt.com/forums/showthread.php?t=202841)

HammrsHell 03-04-2013 08:39 AM

Which Engine is more realable 2.5GT or 3.0R?
 
I am looking in the 2005-2009 year ranges. I have read about quite a few issues with the 2.5, but done know much about the 3.0. So which is more reliable, 2.5 or the 3.0?

blongo804 03-04-2013 08:44 AM

Probably the 3.0 since you won't have to deal with an imploding turbo headache ever.

ChaoticZen 03-04-2013 08:56 AM

NA engines are theoretically more reliable than any force induction engine. Less complicated, no extra piping for intercooler that could leak overtime...etc.

HammrsHell 03-04-2013 08:59 AM

I have seen many 2.5GT with rebuilt short blocks, long blocks, turbos etc. Is it a design flaw with the engine itself? I have read a lot of issues around cylinder 4. I didn’t know if that issue translated over to the 6 cylinder.

DOHCEJ22E1 03-04-2013 09:07 AM

Quote:

Originally Posted by HammrsHell (Post 4322702)
I have seen many 2.5GT with rebuilt short blocks, long blocks, turbos etc. Is it a design flaw with the engine itself? I have read a lot of issues around cylinder 4. I didn’t know if that issue translated over to the 6 cylinder.

Turbo engines are not as reliable as N/As because they generally run hotter under more stress & use up oil faster. The issue w/cylinder #3 is that the turbo is right next to it, so the heat from the turbo is always sinks into that side of the engine, which is already hot, causing more heat to build up. The H6s do not have these kinds of problems.

xt2005bonbon 03-04-2013 09:46 AM

Quote:

Originally Posted by DOHCEJ22E1 (Post 4322710)
Turbo engines are not as reliable as N/As because they generally run hotter under more stress & use up oil faster. The issue w/cylinder #4 is that the turbo is right next to it, so the heat from the turbo is always sinks into that side of the engine, which is already hot, causing more heat to build up. The H6s do not have these kinds of problems.

Actually, the cylinder closest to the turbo is cylinder #3. #4 is on the driver side closest to the driver. Mine is also messed up :(. Probably a burnt valve.

Sounds like one of the reasons for issues with this cylinder can be fuel supply (apparently it is the last cylinder to get fuel where it may run leaner than the rest). Then you get knock, then you go kaboom. lost ringland.. That's my understanding anyway, though it appears that it is not what I have.

HammrsHell 03-04-2013 10:16 AM

Quote:

Originally Posted by DOHCEJ22E1 (Post 4322710)
Turbo engines are not as reliable as N/As because they generally run hotter under more stress & use up oil faster. The issue w/cylinder #4 is that the turbo is right next to it, so the heat from the turbo is always sinks into that side of the engine, which is already hot, causing more heat to build up. The H6s do not have these kinds of problems.

Quote:

Originally Posted by xt2005bonbon (Post 4322759)
Actually, the cylinder closest to the turbo is cylinder #3. #4 is on the driver side closest to the driver. Mine is also messed up :(. Probably a burnt valve.

Sounds like one of the reasons for issues with this cylinder can be fuel supply (apparently it is the last cylinder to get fuel where it may run leaner than the rest). Then you get knock, then you go kaboom. lost ringland.. That's my understanding anyway, though it appears that it is not what I have.

Yeah these are the things I have read. Yall are confirming my instinct to go with the 3.0

xt2005bonbon 03-04-2013 10:20 AM

They're so much fun to drive though, thus negating (believe it or not) the frustration of busting an engine! at least in my case :spin:

In all seriousness though, I am inquiring from a tuner on this forum if this problem can be fixed with a good quality tune. There are guys over here with 150k+ and even 200k+ on their original engine. So it's possible.

HammrsHell 03-04-2013 10:22 AM

Quote:

Originally Posted by xt2005bonbon (Post 4322842)
They're so much fun to drive though, thus negating (believe it or not) the frustration of busting an engine! at least in my case :spin:

In all seriousness though, I am inquiring from a tuner on this forum if this problem can be fixed with a good quality tune. There are guys over here with 150k+ and even 200k+ on their original engine. So it's possible.

I am sure there are some higher milage ones out there. I think I have been scared by all the ones in the 40k 50k 60k mile range that have already blown and rebuilt their engines.

xt2005bonbon 03-04-2013 10:23 AM

Quote:

Originally Posted by HammrsHell (Post 4322851)
I am sure there are some higher milage ones out there. I think I have been scared by all the ones in the 40k 50k 60k mile range that have already blown and rebuilt their engines.

I understand.

DOHCEJ22E1 03-04-2013 10:31 AM

Quote:

Originally Posted by xt2005bonbon (Post 4322759)
Actually, the cylinder closest to the turbo is cylinder #3. #4 is on the driver side closest to the driver. Mine is also messed up :(. Probably a burnt valve.

Thanks for the correction!

xt2005bonbon 03-04-2013 10:31 AM

not a problem :)

HammrsHell 03-04-2013 10:58 AM

Thanks for all the responses guys!

dan04103 03-04-2013 11:43 AM

The H6 is a fabulous DD engine. I certainly can see the GT side of it (fun as hell to modify) and was actually looking for one with MT but found my 06 H6 and loved the test drive. SOLD. Since then I did a few mods ;) and that is all she wrote. Maybe someday the raptor will come calling... hmm.

Good Luck!

HammrsHell 03-04-2013 11:57 AM

Quote:

Originally Posted by dan04103 (Post 4322974)
The H6 is a fabulous DD engine. I certainly can see the GT side of it (fun as hell to modify) and was actually looking for one with MT but found my 06 H6 and loved the test drive. SOLD. Since then I did a few mods ;) and that is all she wrote. Maybe someday the raptor will come calling... hmm.

Good Luck!

HAHA i would love to have a raptor as well! Cheepest one i could find had 125k miles and they still wanted $40,000.... What all have you done to you H6?


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