Hot 555 Juice, RokkTech Sensor & Tone Ring Mod!

[BIG BOB]

All I can say is Oh Yea!#ad




I have the Hot 555 Juice and put the RokkTech Crank sensor on about 3 weekends ago. Everything was fine, no pinging, knocking or weird sounds so I figured why not try the Tone Ring Mod too. Did the Tone Ring mod this morning.



Here is the stock Tone Ring and stock dowel pin hole:



#ad




Here is the Tone Ring after modifying the dowel pin hole.



#ad




Here is a closer look:



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No pinging or knocking, even better low end performance! If you roll on the throttle from a stop it is a definate improvement and after about 4#'s of boost your gone! If you hammer it, you will still have the lag. Of course mine is a little worst because of the B1. We'll have to wait for the mileage and cool-down results.

 

[RGardner]

I will show my ignorance here. Please explain what the tone ring is and what does the mod accomplish?

 

[JohnArnold]

The Tone Ring is that sprocket-looking thing above, it's used to electrically sense where the crank position is. The mod he did was to pull the crank pulley from the front of the engine, take off the tone ring, and open up the left side of the dowel pin that is used to align the tone ring. This allows you to rotate the tone ring 1-3 degrees and then zap back on the crank pulley.



-John

 

[RGardner]

Thanks! Does the rokktech sensor do about the same thing?

 

[BIG BOB]

Thanks! Does the rokktech sensor do about the same thing?

The RokkTeck advances the timing by moving the position of the crankshaft sensor.



Each are good for about 2* each, for a total of about 4*.

 

[JStevenson]

how much

if you drill it out is there enough play in the bolts to make it work

 

[Matt400]

Hey Big Bob,

Did you have to pull the fan and is a puller needed for the lower pulley?

Also are you using any Cetane improver?

Thanks for the pics!

 

[Sled Dog]

More data, please.

 

[BIG BOB]

Hey Big Bob,

Did you have to pull the fan and is a puller needed for the lower pulley?

Also are you using any Cetane improver?

Thanks for the pics!

No I did not have to remove the fan and a puller is not needed.

Since I have done these mods, I haven't use any Cetane improver. That will be one of the next steps.

 

[Matt400]

Big Bob-

What elevation are you at?

I suppose you could elongate all 5 holes enough to not need the sensor mod too.

 

[BIG BOB]

Big Bob-

What elevation are you at?

I suppose you could elongate all 5 holes enough to not need the sensor mod too.

Matt,

I am at about 2400 feet.



Yes, you could elongate the holes, the center hole will keep it in line, I'd be very careful in doing this.

 

[Matt400]

Is that ring just bolted to the pulley or is it also sandwiched between the pulley and crank? Now that you have it more movable do you loosen all 5 bolts or just the 4 to make a change?



Just like elevation on a gas motor, your 2400 ft. may help suppress ping more than those at sea level.

 

[BIG BOB]

Is that ring just bolted to the pulley or is it also sandwiched between the pulley and crank? Now that you have it more movable do you loosen all 5 bolts or just the 4 to make a change?



Just like elevation on a gas motor, your 2400 ft. may help suppress ping more than those at sea level.

There is only 4 bolts, loosen them and you can rotate it. It mounts between the harmonic balancer/pully and crank.

 

[Matt400]

Yes, you could elongate the holes, the center hole will keep it in line, I'd be very careful in doing this.

Hey Big Bob,

I did just that. . I not only elongated the dowel hole but also the other 4 bolt holes for more rotation as I don't have that sensor mod.



With 58 teeth and 2 missing on the tone wheel I am thinking 60 into 360 degrees = 6 deg. for each tooth. I had marked on the engine where one of the teeth was at in the OEM setup before removal, then removed material on the counter clockwise side of the dowel and mounting holes till I was able to establish a clockwise rotation of 1/2 a tooth which should give me 3 degrees.



This mod was more easy than I thought, thanks for the info!

 

[Sled Dog]

Hey Big Bob,

I did just that. . I not only elongated the dowel hole but also the other 4 bolt holes for more rotation as I don't have that sensor mod.



With 58 teeth and 2 missing on the tone wheel I am thinking 60 into 360 degrees = 6 deg. for each tooth. I had marked on the engine where one of the teeth was at in the OEM setup before removal, then removed material on the counter clockwise side of the dowel and mounting holes till I was able to establish a clockwise rotation of 1/2 a tooth which should give me 3 degrees.



This mod was more easy than I thought, thanks for the info!

What was your result? Oo.

 

[Matt400]

What was your result?

Nothing to report yet cuz I just did it an hour ago. Start up, idle and cruise all seemed the same. I did a hand calc. on mileage before the mod and filled up again right after so we will see what happens on that.

 

[Buffalo]

What's the trick you guys are using to both loosen & tighten the pulley bolts without having the pulley turn?



I've got the NV-5600 in first gear & the pulley spins without much effort.



While I'm at it, do you guys think the tone ring mod will have a adverse effect on the trucks ability to pass the local emmissions testing, here in AZ?



Thanks for your help.



Joe F. (Buffalo)

 

[Matt400]

With a manual I think you would have better luck in a taller gear with the park brake on.

I have an auto so removed the torque converter cover and used a large screw driver in the teeth to hold things.



Do you know what they test for? Once you do the mod, you can change it back by just loosening those 4 bolts instead of taking it all apart.

 

[Buffalo]

MATT400



Thanks for the suggestion. I'll try it.



I thought about just turning it back for the emmissions test but, if I was going to have that much trouble loosening the bolts, this time, having to do it every year might become a bit of a pain in the rearend.



Regarding the test, it's called an "opacity test". Basically, they put a sensor at the end of your tail pipe & you have to floor the accelerator 10 different times. They check the amount of smoke produced, as I understand.



Thanks again, MATT400, for your help. If anyone else has any good ideas, please let me know.



Joe F. (Buffalo)

 

[steved]

Advancing the timing (with the RokkTech sensor) seemed to lessen the smoke produced in my truck... and others too from what I have read.



steved