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Discussion Starter #1 (Edited)
2011-2017 Mustang GT Cooling Head Mod by MMR, eliminate the #8 cylinder failure today

MMR 2011-2017 5.0 Head Cooling Mod

As used in the worlds fastest 5.0 Coyote Mustang
(watch the video here) .MMR's cooling head mod is designed to help eliminate hotspots in the #8 cylinder by promoting coolant flow around cylinder # 8 - the cylinder long known to be the first to detonate with aggressive naturally aspirated tunes and forced induction. Dont fall victim to this failure, protect your investment with this simple, professional kit. Installation requires tapping out the factory freeze plugs (very easy) and simply installing the MMR kit. Kit is sealed with high grade O rings (included). Socketless hose does not require hose clamps for simple push on installation. Inlcudes all parts shown, no other parts required. Fits all Mustang, BOSS and F150 with 5.0 TiVCT engine. Billet Alloy construction. This should be the first step in modifying your 5.0 , 100% USA MADE by MMR

Normally $229.99
ON SALE NOW FOR $199.99

Order here now: http://www.modularmotorsportsracing.com/cart/index.php?main_page=product_info&cPath=26_27&products_id=555

Dealer Inquiries Invited

or call 1-877-MOD-POWR





Here are some posts of those who have installed it:

Just got my shorblock installed that I had built by BBR and shipped to me over here in Germany. BBR recommended this cooling mod since I have a blower setup. Literally took me no time at all to install. And once I got this installed I noticed that my ECT's have dropped a noticeable amount from my Aeroforce gauge by almost 10 degrees in traffic and noticed on my instrument cluster as well that it's cooler. This a great way to keep the engine cooler for less detonation and I would recommend this for any new Coyote 5.0's for some good insurance for your investment. Thanks BBR and MMR.

We have installed this a couple cars in the last couple weeks and sent some over to our boys stationed over-seas. What we have noticed is that the cars ECT's have stayed cooler. Now we have not done any serious testing because the motors that they went in were all new built ones going through seating of the rings but we are looking forward too see the final result. So far, we trust this product very much and if your swapping out the motor, we deff recommend this mod!!
 

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I don't mean to ask a stupid question, will this mod work on a 5.4 F150 Lightning engine, also is it hard to install this in an engine still in the truck. I'm running a M122 blower, mostly stock from there for now.

Thanks for you time

Blessings
Rusty
 

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Discussion Starter #6
This kit does not fit the 5.4 Truck engine unfortunately.
 

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Is there any test results to prove the coolant cross flows? Wouldn't the coolant pressure at the back off both head cancel each other out? Could I use this kit and run each side to the rad instead of each other?
 

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Discussion Starter #17
We have done exhaustive testing showing that the hose exchanges fluid/heat, but yes, it could also be routed the way you are suggesting.
 

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Can this still be used if I have no heat in the car and I'm just lopping the heater inlet/outlet to eachother. This mod will still work and help, correct?
 

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Discussion Starter #20
Yes, this mod is independent of the heater on Coyote 5.0 engines.
 
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