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Member
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Join Date: Oct 2018
Location: San Diego CA
Posts: 417
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Member
Join Date: Oct 2018
Location: San Diego CA
Posts: 417
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Top end work MPG and power down
Just had two new heads done, Timing belt, water pump, all the idler pullys, fan bering, put Doug thorley headers on. My MPG went from 14-17 to 12 mpg.. only gone thru two tanks. and I feel like there is less power.
Shop says all the bearings being new and tight there is more drag on the motor. VS old bearings all worn out spin more free. (not buying it)
seem normal? maybe there is a break in period?
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IG: @4runnerfiend- 1999 SR5: TRD Supercharger, ELocker, Wheelers T1 Coils-tundra 5100's, Built Right UCA's, LC 8 wraps-Fox 2.0 with CD adjuster, Rokmen lower links, Savage skids, Hot Metal Fab Front Tube bumper, Savage Rear tube bumper, TruckShopSD Sliders, DuroBumps, RidgeGrapplers, Doug Thorley Headers, yellow top, XRC 12k, ARB single compressor.
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