Different 4.6 crank gears??

miss.mod.50 · Jan 7, 2014

Until last night I didnt know there are different styles of crank gears. Can someone explain when/why one is used vs the other? The one that came in my Ford Racing kit pushed the chain out over the guides, but i had this other style laying around.

Using top gear:

using bottom gear:

MustangChris · Jan 7, 2014

woooow. interesting.

subbed.

96blak54 · Jan 7, 2014

The crankshaft timing sprocket changed to a stamped steel design from a powdered metal design. This changed how the crank is machined. The lower looks machined to be adaptable for multiple cranks

miss.mod.50 · Jan 7, 2014

I have about 6 crank gears sitting here, and all but one are the style of the top gear that came with the FRPP kit, even the older 2 piece crank gears out of a mark 8 have the same spacing as the top gear. I have NOOO idea what the bottom gear came out of, but feel lucky as hell that I had it in my box of random timing parts or i'd have no idea there was even a difference. Normally I can find part differences in a couple google searchs, but coming up empty on this one.

duff daddy · Jan 7, 2014

Depending on the crank gears, cylinder heads, blocks and timing pieces will all give you a slight variation, we ran in to something similar with my teksid 2v build

MustangChris · Jan 7, 2014

what would be considered safe tolerances on those tensioners?

miss.mod.50 · Jan 7, 2014

duff daddy said:
Depending on the crank gears, cylinder heads, blocks and timing pieces will all give you a slight variation, we ran in to something similar with my teksid 2v build

Do you by chance know what the lower gear came out of or where to get one?? What did you run into on your 2v teksid? Thats reason why I'm trying to find what that bottom (grooved) gear is out of.....in case I need one for my 2v teksid/trick flow as well.

duff daddy · Jan 7, 2014

miss.mod.50 said:
Do you by chance know what the lower gear came out of or where to get one?? What did you run into on your 2v teksid? Thats reason why I'm trying to find what that bottom (grooved) gear is out of.....in case I need one for my 2v teksid/trick flow as well.

I used the 2pc out of a 03/4 cobra, used the orig 96 timing pieces, used the FLAT PRESSED crank trigger wheel, and oe crank gears..