2005-06 Jeep OPDA_CPS_Distributor Failure - Page 45 - JeepForum.com
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Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > 2005-06 Jeep OPDA_CPS_Distributor Failure

Huge Soft top SaleNitro Gear Packages Now Available at Rockridge 4wdRough Country Jeep Suspension Deals at Rockridge 4WD!

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Unread 02-20-2011, 08:38 PM   #661
keithert
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Quote:
Originally Posted by tkki1230 View Post

How did you get the plug orientation perpendicular to the engine? Mine is at a 45 degree angle.

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Unread 02-20-2011, 09:54 PM   #662
tkki1230
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Quote:
Originally Posted by keithert View Post
How did you get the plug orientation perpendicular to the engine? Mine is at a 45 degree angle.

You can have the unit facing pretty much where ever you want, just like a distributor. Right now, it is almost at the maximum limit in the clockwise direction before the plastic cover hits the block.
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Unread 02-20-2011, 10:24 PM   #663
Heath
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What about drilling and tapping a couple of holes opposite of each other on the timing sprocket on the end of the cam, and mounting the reluctor wheel there? Then modifying the timing cover to accept the camshaft position sensor. then you could stick whatever you wanted in the place of the opda just to turn the oil pump. Someone could sell that setup as a kit with a already modified cover, and a drilled and tapped sprocket, and a reluctor machined to fit. Or even machine the timing sprocket with the reluctor wheels pattern on the face. It seems like at this point, that would be just as easy as the major mods everyone is doing to the opda units.
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Unread 02-21-2011, 12:26 AM   #664
Zetto
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Installed FogMod 1.0 a few weeks ago and made the switch from Mobil 1 10w30 High Mileage(900 PPM of Phosphorus and 1000 PPM of Zinc) to Mobil 1 5w40 Turbo Diesel Truck(1100 PPM of Phosphorus and 1200 PPM of Zinc) oil today (48,000mi on the rig). Next up is replacing the actual gear and then periodically checking wear.

Is there a source for a good quality gear besides ordering a complete 04 or older unit?
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Unread 02-21-2011, 05:46 AM   #665
uf20wop
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Quote:
Originally Posted by keithert View Post
How did you get the plug orientation perpendicular to the engine? Mine is at a 45 degree angle.
the orientation to the engine doesn't matter

all that matters is that the sensor remains at the same location on the target wheel
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Unread 02-22-2011, 03:32 PM   #666
CRJeepin
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Quote:
Originally Posted by Zetto View Post
Installed FogMod 1.0 a few weeks ago and made the switch from Mobil 1 10w30 High Mileage(900 PPM of Phosphorus and 1000 PPM of Zinc) to Mobil 1 5w40 Turbo Diesel Truck(1100 PPM of Phosphorus and 1200 PPM of Zinc) oil today (48,000mi on the rig). Next up is replacing the actual gear and then periodically checking wear.

Is there a source for a good quality gear besides ordering a complete 04 or older unit?
I think I read a few pages ago that the Dorman replacement OPDA unit has a low quality gear, and the Crown gear is better (but requires shimming). I didn't see an answer to a question that was asked about what to use for a shim though....
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Unread 02-22-2011, 07:52 PM   #667
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I bought the dorman unit. The gear had heavy deep pitting throughout the casting. I chose to send it back & order the crown gear from quadratec for modification. I have not had a crown in my hands yet to see the quality of it.
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Unread 02-25-2011, 05:22 PM   #668
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The quality of the Crown gear is 50X better than the import gear. Heavy, solid. Only had one hole drilled in it? It doesn't go through the shank.
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Unread 02-25-2011, 07:19 PM   #669
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Quote:
Originally Posted by 05LongJeep View Post
The quality of the Crown gear is 50X better than the import gear. Heavy, solid. Only had one hole drilled in it? It doesn't go through the shank.
No. You line up the single hole with the hole in the shaft and then drill the remaining hole. It's to insure the hole is straight. I think the crown gear will require you to drill a new hole through the shaft because the hole in the gear is different than the stock gear.
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Unread 02-25-2011, 10:25 PM   #670
05LongJeep
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Yea, We have a full machine shop at work. I plan on redrilling in the next few days. Unless I trade the LJ in on a JK 4DR. Its in the works with the Wife.
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Unread 02-25-2011, 11:31 PM   #671
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Will be checking my '05 this weekend.
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Unread 02-26-2011, 07:17 AM   #672
CRJeepin
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I have a Dorman on order, if it's crap I'm gonna do the Crown gear too...having it drilled will mean a trip to the machinist though. Are you guys just measuring the preload / gap between the existing gear and the thrust washer, and having that duplicated when drilling the new hole?
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Unread 02-26-2011, 08:34 AM   #673
CRJeepin
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Quote:
Originally Posted by 05LongJeep View Post
The quality of the Crown gear is 50X better than the import gear. Heavy, solid. Only had one hole drilled in it? It doesn't go through the shank.
Hey man, would you mind posting up the part number for the Crown gear? I thought I saw it somewhere in this thread, but can't find it now!
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Unread 02-26-2011, 09:31 AM   #674
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Quote:
Originally Posted by CRJeepin

Hey man, would you mind posting up the part number for the Crown gear? I thought I saw it somewhere in this thread, but can't find it now!
I just ordered mine thru 4WD Hardware, Crown part #83504635. This gear is for older TJ's that is why there is only 1 hole and it's not in the correct position. You will have to modify it to make it work on an 05 & 06.

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Unread 02-26-2011, 06:09 PM   #675
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Quote:
Originally Posted by willydigger View Post
Quick Update:

When I removed the OPDA shaft using the Mobilith 220 I reinstalled it with Aeroshell 33MS, but I forgot to clean the shaft back to new. I pulled it again today to sand it with some 2000 grit sand paper. The top bushing was covered in MS33. It had squeezed out the top and globbed around the black plastic washer. While the 220 had very minimal contact the 33MS was everywhere. I was very impressed with the coverage.

I polished the shaft clean. I added some oil to the inside of the OPDA to make sure it didn't dry start. Once I get 5000 miles I'll post up the start shaft pics and the used shaft pics for comparison. To keep the thread clean until I get "after" images I'll put the "before" image here.









How did you get that groove machined in the shaft? Is it completely necessary? Plan on picking one of these up and doing your mods when I get home. Thanks for all the great info.
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