When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I bought this LS2 crank bare. Looking it over, the reluctor wheel seems to be in a different "clocking" than other cranks. Its not loose; no indication it has been impacted. Supposedly came out of a running engine. Anyone seen anything like this ?.
I happen to have another crank, which I think is correct, its on the right in the pic. "Suspect" one on left.
The arrows should be at 3 and 9 o'clock in relation to the dowel hole. It looks like someone just installed the reluctor without the install tool (on the left) and it's good that you caught it now. You'll need to remove it and reinstall it or buy a new reluctor and install it; they cost next to nothing brand new.
^^^^ Pantera efi is telling you how it should be aligned. Your pictured crank on the left, the space
at the top, count 13 teeth counterclockwise and that tooth should be in the center of the
crank sensor mounting hole in the block, when the mounted crank is in the #1 or #6 TDC position. Thats what I got out of it anyway.
A post I found while researching this, claimed the 14th tooth should be in the middle of the sensor hole/window, at TDC. To verify this I mocked up a crank in a block with degree wheel. With the reluctor triangles at 3 and 9 o'clock, I also found the 14th tooth was centered in the window.
I've looked for a GM patent on this system but haven't found one. Does anyone know the patent number?
Any tooth could be used, provided the computer or ign box was programed to read it correctly. Which explains GM using no.6 cyl for TDC and clocking the reluctor different.
I have a simple method for clocking the wheels to the crank if anyone is interested.
So now i've heard of the 11th, 13th and 14th tooth past the space being used for the LS.
Hi TJZ, there is NO GM Patent for the 60-2 TW. (GM58x)
I STATE MANY "0" TDC trims at +1.75* (13 tooth) with more than TEN YEARS of measurement.
I STATE the 60-2 patent (58x) was at the 11th tooth with 66* BEST position FOUND.
I STATE the Bosche "infringement" found many at the 14th tooth, a VERY BAD position.
I STATE my ECU-882C DOES ALLOW for tooth Index AND Trim.
I STATE the "tooth" is seen by the Allegro sensor as high before the middle of the tooth, thus the required 1.75* trim requirement as common.
NOW the reason for the 11th tooth choice IS the LACK of measurement POSSIBILITY in the MISSION TOOTH SECTION.
WE measure Crankshaft Acceleration AND at 78* that value is GREAT, the GM BAD choice.
ANOTHER BAD CHOICE by GM is the name "58x" as there ARE 59 teeth seen by the EMS.
Thanks for clarifying this situation,Lance. The hard data you have is what I was looking for. So the thirteen tooth it is.
Therefore, I assume the pricey Goodson tool locates the reluctor at the 13 tooth position. (making a statement only) More to think about, 13x6=78 11x6=66 14x6=84. I've heard of allegro microsystems. Wonder who's CS sensors have the allegro chip in them. Could cut some open i guess.
I have a low cost, low tech method of installing 58x wheels. Using two alinement pins with sharp points at 3and 9 o'clock and scribe line across the aft face of the wheel. With the line going from the leading edge of the 13th tooth from the space to the opposite tooth 180 degrees, you have references to install the wheel. Heat the wheel and carefully match the scribe to the points. This will put the 13T in the sensor hole C/L at #1TDC.
Last edited by tjz450; Nov 2, 2017 at 09:53 AM.
Reason: Incomplete message
I have a low cost, low tech method of installing 58x wheels. Using two alinement pins with sharp points at 3and 9 o'clock and scribe line across the aft face of the wheel. With the line going from the leading edge of the 13th tooth from the space to the opposite tooth 180 degrees, you have references to install the wheel. Heat the wheel and carefully match the scribe to the points. This will put the 13T in the sensor hole C/L at #1TDC.
.
The 3 and 9 o'clock positions for the pins are in respect to the dowel pin hole on the crank flange and #1 rod journal being at 12 o'clock.
Just to confirm, the 14th tooth centered in crank sensor hole is a bad position? Does anyone know why that position doesn’t work and what type of problems it would cause?
Factory LS7 crank, dead nuts center on the 14th tooth.
WTF? How long does it take mods to approve my first post?? I’ll try again.
14th tooth centered on the crank sensor hole, that is a bad position correct? My stock LS7 crank is in this position. Thanks.
Hi Blue, I would like you to confirm YOUR count, possible by pictures ?
DID you count the "notches" OR "teeth" ?
Lance
For some reason the system is rejecting my posts with pictures, I just tried for the second time to post a picture.
Im counting “teeth” with #1 cylinder at TDC. Marked the tooth with a black marker then used a bushing with a small ID to make witness mark on the tooth. I’m confident saying the witness mark is within .010” of the crank sensor hole centerline. Witness mark is centered up on the 14th tooth.
Thanks for the help.
Any comments about that positioning and why it’s not correct? I have fought a random misfire code paired with a rich condition only at idle for a long time. I’m starting to believe this has something to do with it. It was never a real misfire and car ran good otherwise.
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.
7 Most Reliable High-Performance Engines GM Has Ever Built
Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.
Reluctor wheel shift 
