MMR 4V / DOHC BILLET Secondary Tensioners & XHD chain kit – Ford Falcon BA BF FG 260 290 315
Description
MMR Billet Passenger side DOHC Secondary tensioner and Heavy Duty Secondary chain kit.
It has long been known that the factory passenger side secondary tensioners on ALL DOHC’s tension the chain on the wrong side, this creates cam timing errors as great as 7 degrees (regardless of how the cams are degreed!) This new kit from MMR brings the margin of error down to a mere 1 degree. Properly tensioning the chain and adding the heavy duty chains allows you to degree the cams perfect every time and testing has shown 4-5MPH gains in the 1/4 mile! Get your timing under control with this kit today- a must for any High HP application!! As used by team MMR to produce 3000HP and 10,000rpm. The driver tensioner from the factory leaks between the cylinder head and tensioner, reducing oil to the camshafts and cylinder heads which cam create timiing variances and broken secondary chains. A must for all applications with aftermarket valve springs AND / OR cams. Also fits 2007-2014 GT500. Anodized for corrosion resistance.
*Plug and Play Install
*Fully rebuildable with replaceable wear strips
Fits:
*All Australian 4.6/5.4 DOHC Applications
Includes:
*Billet Secondary tensioners (driver & passenger side) PN# 444036 & PN#444038
*UPGRADED XHD (Extreme Heavy Duty) SECONDARY chains pr. PN#487028
*ARP Hardware
The factory tensioner leaks oil internally, these internal oil losses create inconsistent chain tensioning at higher RPM which cam lead to inconsistent cam timing and even secondary chain failure. The MMR Extreme high quality billet Tensioner seals to the cylinder head with a replaceable o ring for a perfect seal and no internal leaks. This product can help prevent seized cam journals by making sure oil pressure remains in the head and not wasted through leaks between the head and tensioner!
Proudly Made in Camarillo, CA USA
Unlike other brands on the market, the MMR tensioner features a lifetime warranty and is 100% rebuildable and has been tested on the Worlds Fastest and ONLY 5 second 5.4 Ford Modular Engine.
Fits ALL 4.6, 5.4 and 5.8 DOHC applications.
Select Complete tensioner in options below (as shown), or DIY kit that requires your original tensioner parts and assembly.
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