cam trigger wheel phase altered by degreeing cams?
- Thread starter lifespeed
- Start date
musclemerc
Senior Member
I had no idea they made different length gear teeth for C head cams.
Been around a long time and thought I'd seen it all..... Nope.... I didn't....
Lowndex
Post Marauder Mod Disorder
Are there different length ones available? Anybody?
This would save a lot of time and $.
The tooth in question is the trigger for the magnetic pickup. I'm not sure who made the cam gear in Lowndex's engine, but it appears to have been made without any engineering or even an understanding of the basics. The cam trigger tooth moves with cam timing adjustment, which may be a questionable thing to do from the perspective of the PCM. Neither Cloyes nor Comp Cams moves the cam trigger with cam timing adjustment. Also, the trigger tooth does not extend radially far enough towards the outer edge of the cam gear in order to sweep past the cam sensor magnetic pickup. I've got a photo but I'll leave it up to Lowndex if he wants to post it.
Personally, I think half the aftermarket parts out there are junk designed by idiots. But you can't build a hot rod engine without aftermarket parts. The trick is to know which ones aren't junk.
justgod
New member
That does suck. That’s enough to drive you nuts. There are gears that change the trigger gear in relation to the cam though, I’ve used them before. TFS billet adjustable crank gears.
https://www.trickflow.com/parts/tfs-51800505
https://www.trickflow.com/parts/tfs-51800505
musclemerc
Senior Member
I’d say they are the same length
99 cobra, 03 cobra, 03 Marauder cam position sensors. The crank sensor is much longer and offset
All the same plugins even the crank sensor
Yep.... Many years... No difference.....
Your right, does not make any sense
Lowndex
Post Marauder Mod Disorder
"If you look at the two different brand gears below, you see Lowndex's gear (2nd pic) moves the cam sensor with the angle of the cam (degreeing). The Comp Cams gears do not alter the relationship between the cam and crank signals, while still allowing the cams to be degreed. It looks like a small change in angle, but the Ford computer may see that as excessive timing chains stretch and call it an error condition."
Lifespeed
Lifespeed
clear pics
Here are some clear photos. Waveform out of the cam sensor needs to be checked, although a solid signal won't prove that cam signal alignment is not a problem. Should confirm tooth/sensor function though.
Lowndex cam gear, unknown brand:
Lifespeed cam gear Cloyes Hex-A-Just:
Here are some clear photos. Waveform out of the cam sensor needs to be checked, although a solid signal won't prove that cam signal alignment is not a problem. Should confirm tooth/sensor function though.
Lowndex cam gear, unknown brand:
Lifespeed cam gear Cloyes Hex-A-Just:
justbob
Sick-Speed play toy
It also appears to be not be close enough to the outer portion for a good reading.
Although the sensors shown above prove to be all the same, what about placement on the cover for different 4V’s? If there is slight differences but close enough for stock gears, then I think you found the problem..
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Although the sensors shown above prove to be all the same, what about placement on the cover for different 4V’s? If there is slight differences but close enough for stock gears, then I think you found the problem..
Sent from my iPhone using Tapatalk
justgod
New member
There’s an interesting thought. Even though the bolt heads are level with the gear face, would the space on either side allow for the fluctuation to be picked up? Hmmmmm. Still, you’d think there’d be a lot of mustangs out there that have encountered this.
