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thats why i say "can be". So far I haven't seen a failure post or thread where the owner was using a WMI system or running E85 blended fuel(iirc on that).
Documenting A Motor Build - From Failure To Rebuild To Upgrades!
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Yeah, there was one guy who posted in the blown motor thread for a friend and he was running meth. But that's my point, if ti add wmi after the fact that you have some piston deterioration, it could be too late.
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He actually posted later (if I think we're talking about the same guy) that he did not have water/meth installed that he was just "stage 3" (post 607)
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Nope, a couple pages earlier:
http://www.focusst.org/forum/focus-...lown-motor-resource-thread-59.html#post722312
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Based on his description of his friends car it doesn't sound like the failure was a ring land issue. What I got from his post was: shattered piston, thrown rod, and vented block. Since the car wasn't his and the owner isn't here there's no telling what happened.
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184 Posts
Yea "chocolate milk" is not good I guess I would have tried to track down the reason I had coolant in my oil. I don't want to just rule him out as an example but it seems like his car may have been hurting and the big turbo is not going to help that out. I really do think that a good quality WMI kit does help these pistons reliably handle the power by keeping cylinder temps in check and also help preventing LSPI. How many of the blown big turbo engines were using 91 oct. Vs 93 oct.?
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Chocolate milk could just be oil blow by mixed with condensation.
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217 Posts
so finally a little update!
the head is finished and we were able to fit +1 valves on both the intake and exhaust side. We gave the head our special single runner port on the intake side and we were able to do some bowl work on the exhaust runners. We are still experimenting with porting the headifold port so more information to come on that in the future.
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the head is finished and we were able to fit +1 valves on both the intake and exhaust side. We gave the head our special single runner port on the intake side and we were able to do some bowl work on the exhaust runners. We are still experimenting with porting the headifold port so more information to come on that in the future.
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589 Posts
I'm coming a little late to this party but I did just spend the last hour at work reading the posts lol. I am definitely curious to see how this turns out, and now I have a lot to think about before I start installing mods on the car. I appreciate all of the info that's on here.
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217 Posts
Hey guys here's a little update as well for this motor just in case you missed it.
http://www.focusst.org/forum/speed-...-perf6rmanc3-focus-st-crankshaft-testing.html
http://www.focusst.org/forum/speed-...-perf6rmanc3-focus-st-crankshaft-testing.html
AFAIK 1mm larger valves.
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217 Posts
just a little update for you guys!!!
http://www.focusst.org/forum/speed-...-intake-manifold-flow-data-20.html#post769132
http://www.focusst.org/forum/speed-...-intake-manifold-flow-data-20.html#post769132
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217 Posts
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Do you have any idea if there's difference between European and USA version of pistons? I've not heard of low compression cylinders with 2013 ST even while our Euro PCM is calibrated to give constant overboost with european "regular" gasoline (about 90-91 AKI, 95RON) and run very lean in many situations. The base calibration think that it's ok to run over 1,2 bar boost @2500-4000rpm with 14.8 - 15:1 AFR for couple of seconds with AKI 93 gasoline and about 30 degC CAC temperature while flooring at highway on 6rd gear. Just does enrichment after a while and rise boost to over 1,3 bar. And does not blow pistons...
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