...ive heard alot of this number 8 problem with tunes or bad tunes..my question is ,is this still a problem on the 2013 5.0?
just bought one and putting together some mods.
just bought one and putting together some mods.
2013 cyl 8 a problem?
- Thread starter thebreather
- Start date
From my understanding this is not even a problem on the 11-12s anymore, let alone the 13s. This issue happened early on when the coyote was first released and all the tuners were working out all of the bugs and figuring out how to tune these things. It has been resolved for quite some time. Do a search on here/google, its been covered a ton of times.
Yep, just use a reputable tuner.
use a good tuner and you dont need to worry about it.
I guess the Search button doesn't work anymore....
It's not a problem. mid 2012+ including 2013's, they changed some internals(rings I believe) that were causing the issue. Anyways its been fixed by Ford. No worries.
Dont believe what you read on the internet, the issue is still present including the 2013, the #8 cylinder runs hotter than the rest, it is due more to a cylinder head issue than the block issue, the picture below shows the primary reason, you can see the lack of water jacket on the #8 intake port (on the left).
The fix is a really safe tune or the MMR head cooling mod which helps promote coolant circulation around the head/cylinder. We have already received 2 2013 engines with bad #8's
Let us know if you have any other questions!
MMR
The fix is a really safe tune or the MMR head cooling mod which helps promote coolant circulation around the head/cylinder. We have already received 2 2013 engines with bad #8's
Let us know if you have any other questions!
MMR
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Dont believe what you read on the internet, the issue is still present including the 2013, the #8 cylinder runs hotter than the rest, it is due more to a cylinder head issue than the block issue, the picture below shows the primary reason, you can see the lack of water jacket on the #8 intake port (on the left).
The fix is a really safe tune or the MMR head cooling mod which helps promote coolant circulation around the head/cylinder. We have already received 2 2013 engines with bad #8's
Let us know if you have any other questions!
MMR
so you guys popped (2) 2013 engines already??? OR (2) 2013 with a manufacturer flaw on the #8? So the heat treated coating and diff rings were still not enough to prevent the pop???? More info please
No, we didnt "pop" them (the owners/customer did), they have been sent in to MMR for rebuilds, one from Florida and one from PA.
The piston failures that have been occurring are from detonation (not a weak piston), cylinder #8's likely hood to detonate is higher than the others due to higher temperatures.
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Here is the breakdown of the failure to understand it better:
At full warmed up temperature # 8 begins to develop hot spots in the chamber
The lack of water jacket surrounding the #8 intake port increases further fuel evaporation (causes lean issue)
Meanwhile the cylinder # 4 (which has the only temp sensor) fails to see the hot spots in cylinder # 8 and does not adjust timing or add fuel to compensate for cylinder head temperature.
Under long full load runs or boosted runs for the supercharged/turbo cars detonation begins to occur.
The final result is a broken piston ringland or melted piston in cylinder # 8 only.
The MMR head mod addresses the issue on two different levels, it promotes coolant flow around the cylinder # 8, it also allows the sensor on the passenger bank to indirectly sample the hotter cylinder so that the ecu can make changes because the water temps are being balanced at the rear of the engine.
At full warmed up temperature # 8 begins to develop hot spots in the chamber
The lack of water jacket surrounding the #8 intake port increases further fuel evaporation (causes lean issue)
Meanwhile the cylinder # 4 (which has the only temp sensor) fails to see the hot spots in cylinder # 8 and does not adjust timing or add fuel to compensate for cylinder head temperature.
Under long full load runs or boosted runs for the supercharged/turbo cars detonation begins to occur.
The final result is a broken piston ringland or melted piston in cylinder # 8 only.
The MMR head mod addresses the issue on two different levels, it promotes coolant flow around the cylinder # 8, it also allows the sensor on the passenger bank to indirectly sample the hotter cylinder so that the ecu can make changes because the water temps are being balanced at the rear of the engine.
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It's not an issue. The rings and their spacing on the piston were changed for 13. And as others mentioned its really not a problem anymore with what tuners have learned with the coyote. MMR is just using another thread to advertise.
sales pitch
You are welcome to your opinion and we respect that. Sales pitch? Far from it, this product was required to make the worlds highest HP coyote engine built by MMR to survive, as such we have shared what we have learned and the product we created to fix it. Anyone that visits the MMR raceshop will find this on the MMR 1800HP+ coyote powered Mustang, we use it because it works. If you dont feel the mod is needed, that is okay and again we respect it. The bottom line is the problem is real and there are plenty of people out there that have had it happen to them. So dont get angry at us, we have simply come up with a cure - after all we didnt make the # 8's blow up!
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I wash my 1800 hp car with dish soap you should too
Shit can still happen. Guy at my work lost his engine at 1,500 miles and it is a thirteen bone stock. Ford found metal fragments in his oil pan and replaced his engine.
wut
yes, but they are shooting more fuel
the mmr mod makes sense, i dont think it is the one and only fix, but i do feel it would help.
either way, like everyone else said, most tuners know the do's and dont's when tuning a coyote now. if you go with a canned tune then make sure you contact the manufacture and get the latest revision
Who cares. Use the search button. If you have a shitty tune on a high compression engine and lean it out. Something is going to melt. Leave it stock or make sure you have a good tuner.
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