STOCK IGNITION - plugs Bosch WC8DC vs Bosch WC145ERT2

[djw]

I've not seen any of the plug cross-references on the various pinz sites listing the Bosch WC145ERT2 (or WC145 ERT2) as an alternative to the original Bosch WC8DC.

The plugs are similar but the WC145 is significantly shorter overall, does not extend into the combustion chamber as far, and the center electrode does not extend as far. I have found nothing about the heat range on the web relative to the 8 heat range of the WC8DC. The WC145 does not appear to be stainless steel but plated.

Any info on the WC145ERT2 in the standard ignition Pinz? I am not considering converting to civi, I like the stock system.

I really prefer to keep it stock. And hopefully I did not start a thread creep on civi conversions from everyone that has done a civi ignition conversion Maybe every civi or petronix troubleshooting thread the mil ignition runners should chime in say thats why they kept it stock.

Thanks

[M Wehrman]

Civi conv,and have the world of plugs to choose from!

[djw]

I really prefer to keep it stock. And hopefully I did not start a thread creep on civi conversions

[edzz]

Where did you come up with the idea to use the WC145ERT2 ? this plug does not appear to be of similar characteristics to the standard Pinz plug. I can find no reference to the WC145ERT2 in the Bosch standard heat range charts.

Using a plug with the wrong reach and heat range can have very bad results.

Would likely also void your warranty.

You may want to look at the Champion XMN-12 as this appears to be a proper substitution if the correct Bosch WC8DC is unavailable or too pricey.
http://coldwarremarketing.com/parts.asp?s=unimog

Not to flog what appears to be a dead horse in this case however if it were me I’d think about converting to a “non military” ignition.

[djw]

Where did you come up with the idea to use the WC145ERT2 ? this plug does not appear to be of similar characteristics to the standard Pinz plug. I can find no reference to the WC145ERT2 in the Bosch standard heat range charts.

Using a plug with the wrong reach and heat range can have very bad results.

Would likely also void your warranty.

I am sure you will be equally shocked that this is what SAV sent me after they told me prior to the order that the Bosch plugs they had were specifically WC8DC. I took the same issues and sent them back.

My pinz is more of a period-correct time machine at this point, so conversion to FI or civi ignition is not in the cards. Chrome wheels, fat tires, full bar, and roof spa are not on the list either

[crcpinz]

OK, guys, so I am confused. I bought "original" Bosch WC145ERT2 plugs a year ago from SAV. Still have not installed them because the stock ones are doing perfectly since I got the truck two years ago. Should I NOT use the new plugs?

[Jim LaGuardia]

This is old hat, as previously posted(several times)those plugs are at least 2-3 heat ranges too cold. It is unwise to stick with the mil cap and plugs. An engine with these plugs will run like crap at altitude or have very hard starts in cold weather.
Put the civy kit with conversion coil wire in and experience just how good your Pinz can run.
Cold plugs = less fuel economy
The NGK (BP6ES)plugs work great, are the proper heat range, and are less than $4 ea on average, you can use a standard timing light with Beru wires without an adaptor, and Pertonix unit eliminates points.
The whole conversion kit is less than the price of the stock distributor cap alone.
Basically, the stock shielded point ignition system is inefficient compared to the civy kit and most have a much cleaner burning, smoother idling, better running engine when done.

[djw]

This is old hat, as previously posted(several times)those plugs are at least 2-3 heat ranges too cold.

Really? I searched all over here for Bosch WC145, WC145ERT, WC145ERT2 and never had a hit here, or in the Pinzgauer yahoo groups.

There are a couple of mentions on the german language pinzgauer boards, mostly suggesting (in Deutsch) that they "fit". I don't visually believe they are the right range due to the differences in construction and extension. But I could be wrong since there appears to be no Bosch docs I can find.

[djw]

OK, guys, so I am confused. I bought "original" Bosch WC145ERT2 plugs a year ago from SAV. Still have not installed them because the stock ones are doing perfectly since I got the truck two years ago. Should I NOT use the new plugs?

From what I have been able to find in old Bosch material (despite the difference in looks), and my 5th grade German language skills, they are equivalent as it gets in the Bosch line. They have old and new numbering schemes (new WC8DC, old WC145 ERT2)

W (14x1.25 thread)

C (Shielded, Watertight)

8 = 145 - Bosch "unique" heat range code (old vs new system in Bosch designation - heat value is the same)

D and T2 - 19mm "reach" (thread length)

C - electrode material in the new, the ER equates to other properties that are not significant

So while they look very different and are constructed differently, according to Bosch designation they work the same. I am also not sure why the pre-1979 numbering scheme (WC145 ERT2) is still floating around since the WC8DC is supposedly the newer designation, but there you have it.

[undysworld]

I'm stock too. Thanks for the research.

[mopar]

This is old hat, as previously posted(several times)those plugs are at least 2-3 heat ranges too cold. It is unwise to stick with the mil cap and plugs. An engine with these plugs will run like crap at altitude or have very hard starts in cold weather.
Put the civy kit with conversion coil wire in and experience just how good your Pinz can run.
Cold plugs = less fuel economy
The NGK (BP6ES)plugs work great, are the proper heat range, and are less than $4 ea on average, you can use a standard timing light with Beru wires without an adaptor, and Pertonix unit eliminates points.
The whole conversion kit is less than the price of the stock distributor cap alone.
Basically, the stock shielded point ignition system is inefficient compared to the civy kit and most have a much cleaner burning, smoother idling, better running engine when done.

Couldn't agree more!!!!!!!!
My last 712 had the mil setup and I had the civilian set up ready to put in w/petronix but sold it before I did it. My new one has the conversion already done and it ran so much smoother. I just changed the 7 year old spark plugs(cost me $9 at Napa) and it starts like a dream. Now I just need a new cap and rotor as I somehow cracked the cap checking everything out. I'm usually of the school of "if it aint broke don't fix it" But I would say this is a cost effecient and smart upgrade that has nothing but but benefit when it only costs you $45 to put new wires cap rotor and plugs for a tune up.