R16 resistor on an 88 560sl - PeachParts Mercedes-Benz Forum

CoalHills · #1 02-04-2009, 04:40 PM

anyone know the location of the r16 resistor on an 88 560sl?

wbain5280 · #2 02-05-2009, 01:01 AM

This subject has been beaten to death, just leave it alone.

CoalHills · #3 02-05-2009, 09:11 AM

Just want to know where it is. But thanks just the same.

JayRash · #4 02-05-2009, 09:49 AM

should be on the left fire wall. Its a some what circular dial that has green numbers on it. This for euro spec. Cant help u if Usa spec

CoalHills · #5 02-05-2009, 09:55 AM

It's a USA 560. I did see something like that with a screw on lid? I thought it was some kind of diagnostic port, it has electricle pin holes like a canon plug. Maybe my Pop took it out already. Ill have to keep looking.

RBYCC · #6 02-05-2009, 10:17 AM

Quote:

Originally Posted by CoalHills

It's a USA 560. I did see something like that with a screw on lid? I thought it was some kind of diagnostic port, it has electricle pin holes like a canon plug. Maybe my Pop took it out already. Ill have to keep looking.

That's not it...

Do a forum search and you'll find all you want to know about the R16 resistor.

On a W124 it is located in the area of the fuse box near the brake booster/ master cylinder. It plugs onto a wiring harness and is taped over.
It's a fixed value for all USA cars. I believe the USA standard is 750 ohm which retards the timing 6 degrees. No resistor installed provides no spark retard.

Does it do anything...probably as you have more advance.
Can you notice it, probably not on a stock NA engine.

CoalHills · #7 02-05-2009, 11:23 AM

Quote:

Originally Posted by RBYCC

That's not it...

Do a forum search and you'll find all you want to know about the R16 resistor.

On a W124 it is located in the area of the fuse box near the brake booster/ master cylinder. It plugs onto a wiring harness and is taped over.
It's a fixed value for all USA cars. I believe the USA standard is 750 ohm which retards the timing 6 degrees. No resistor installed provides no spark retard.

Does it do anything...probably as you have more advance.
Can you notice it, probably not on a stock NA engine.

I did a search and read the posts but could'nt find the location on an NA 107. You said I wont notice the difference on a "stock NA" model. I'm having a set of custom headers with two magna-flow cats and straight mufflers put on with no resonator. I'm wondering if I'll see a difference then?

CoalHills · #8 02-05-2009, 11:29 AM

Does the resistor say 2481 on it?

CoalHills · #9 02-05-2009, 11:59 AM

Subtle difference?? I actually noticed a big difference from the jump! The idle slowed to about 700rpms but I really noticed a kick up to about 45mph where it seems to level off. It even sounds like there's more efficient combustion going on.

RBYCC · #10 02-05-2009, 12:26 PM

Quote:

Originally Posted by CoalHills

Does the resistor say 2481 on it?

Looks like you found it.

RBYCC · #11 02-05-2009, 12:28 PM

Quote:

Originally Posted by CoalHills

Subtle difference?? I actually noticed a big difference from the jump! The idle slowed to about 700rpms but I really noticed a kick up to about 45mph where it seems to level off. It even sounds like there's more efficient combustion going on.

My point of reference is the M103-12V 3.0L I6.

No real difference when stock NA, but dyno showed a difference after twin turbo install.

Stock R107 V8 appears to like the advance as you describe !!

RBYCC · #12 02-05-2009, 12:32 PM

Quote:

Originally Posted by CoalHills

I did a search and read the posts but could'nt find the location on an NA 107. You said I wont notice the difference on a "stock NA" model. I'm having a set of custom headers with two magna-flow cats and straight mufflers put on with no resonator. I'm wondering if I'll see a difference then?

Are you using the Magnaflow spun metal cats...they are the best in their product line, a knock off of the Random Technology cats.
High flow, about $115.00 each and you will see a power increase !!!

CoalHills · #13 02-05-2009, 01:50 PM

Yeah, those are the ones I ordered, I think I got them for under $100 a peice. Unfortunatly I have to wait for my 4 runner to be repaired and the R title paperwork to go through( 6-8 more weeks) before I can give up the 560 for a week. believe it or not I am actually driving this thing every day in the snow up in the mountains!

CoalHills · #14 02-05-2009, 01:55 PM

Quote:

Originally Posted by RBYCC

My point of reference is the M103-12V 3.0L I6.

No real difference when stock NA, but dyno showed a difference after twin turbo install.

Stock R107 V8 appears to like the advance as you describe !!

Yeah, I'm always skepticle when I hear about things like this but it IS really noticable-no wonder people describe such a difference between the less restricted Euro 500sl and the NA 560sl. Although I'd rather have the 5.6 liter once the exhaust is done and now that the resistor is off.