4.6L (1996-2004 Modular) MustangTechnical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within. Sponsored by Cruizin Concepts
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I have never heard of Ford having engine block webbing differences between the autos and manuals for 99-04 Mustangs. The only thing that dictates the differences between any of the 99-04 engine blocks was what year and ford plant it was built at(Windsor/Romeo). And even there are minimal differences. Most have to do with the cylinder heads/timing sets and how they attach.
Crankshafts are different too. Windsor is 8 bolt and Romeo is 6 bolt in most cases, IIRC. That also means different flywheel or flex plate for manual/automatic.
Oh yeah, that passenger side exhaust always sucks. I always leave that top starter bolt out. Never had a problem. If it were shimmed like the SBC starters, it would be necessary, but I see absolutely no benefit to it being there.
I tried to convince myself that it was ok to leave the top starter bolt out until I got a close look at the bolt bosses on the trans that those bolts go in to.
There's not much meat there and its aluminum at that so I had to put that top bolt back in to be able to sleep at nights.
Getting to these bolts isn't too bad if you using a 24" extension from the front with a universal joint on it, but this was on lift with another pair of hands to get the socket set on the bolt head.
There were seven bolts on the passenger side cam retainer bosses that were finger tight or less. The bosses flexed and all four rockers for cylinders 3 & 4 fell out. I thought by the compression test and misfire codes that the lifters had collapsed. Turns out it was even worse than that.
Hey man I think you might want to have those things connnected haha.
Thats pretty crazy that the bosses would flex. That is completely abnormal wear/defect. I dont think i've ever heard of bosses flexing and rocker/rollers just falling the hell out. Something along the way caused the bizarre behavior with those lifters/rockers/valves.
I wonder if the worn/cracked component started to let the cam run incorrectly. As small as that difference would be.
This is good stuff. Keep doing work!
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