I have a 2002 Jeep Wrangler with a 1999 in line 6 engine. In February i lost a freeze plug and the engine started knocking. I had the engine rebuilt but I have no top in speed. The lower gears are peppy enough but my max speed is 65 mph I have to work to get it to that speed. Highway driving is constantly downshifting and the petal to the metal.
I think it came with 15" tires & I replaced with rubicon 17" wheels & BFG mud terrain. Any suggestions why it has not pep in overdrive?
I imagine that the bigger tires have something to do with it. A tire with a larger outer diameter, will make less rotation at the same speed, so less rotation for the engine, but a higher load. ( i think i wrote this well, but otherwise someone will correct me)
JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.