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1987 560SL
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89 Posts
Discussion Starter #1
The rubber gasket around the air filter where it mounts on my car is warped and partially off the intake. What is this part called? I need to replace that gasket. This is an 87' 560SL with 78K miles, just got it a few days ago and love it.

Second. Has anyone tried a 'test pipe' and removed the cat, put in a K & N, and a higher flow muffler on the 560? What good performance options are there?
 

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Premium Member
1986 560SL with M120 V12 Engine, 1988 560SL Stock
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10,168 Posts
The rubber gasket around the air filter where it mounts on my car is warped and partially off the intake. What is this part called? I need to replace that gasket. This is an 87' 560SL with 78K miles, just got it a few days ago and love it.

Second. Has anyone tried a 'test pipe' and removed the cat, put in a K & N, and a higher flow muffler on the 560? What good performance options are there?
You need to subscribe to EPC. Do a search on how to subscribe. Its free in the US at least for now, and about $10 a year elsewhere. You will need a credit card in the US but they wont charge it.

I believe you are talking about the gasket show in the screen shot from EPC.

As far as the exhaust goes anything you do to it will make the car suck. A factory original complete exhaust system was ~ $4000.00 last I checked. Aftermarket systems are about $800.00 and up. The cost of sound quality over the original will take a huge nose dive with an aftermarket. You can probably get 10 more HP with and open system but its not worth it.
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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32,314 Posts
jplinville posted pictures of a resistor in the wiring on the LF fender. He said he can tell a difference in performance with it removed. I removed it but need to put it back in. I will try to get a pic. tomorrow.

JP hasn't been around for awhile. He moved to PA last week and is starting a new job.
 

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Registered
1987 560SL
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89 Posts
Discussion Starter #9
Thanks guys....

What a helpful bunch....thanks guys. This is a great start to Benz ownership, and I still need to to post pictures. This car is in pristine condition.
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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32,314 Posts
I didn't notice a difference either.
Now I just have to find it. I think it is in the glove box and the glove box is in the garage. Here are the pictures. Resistor will be wrapped with other wires

PS. Found my car phone charger too.
 

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Premium Member
89 R107, 05 CDI
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2,536 Posts
I'm gonna test this next spring as I promised I would this spring, so hopefully I'll have some empirical data for us to consider, I just wanna get some more work done to Penny so I'm not worried about the timing chain.
 

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W107 W113
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1,327 Posts
560SL: Removing resistor for more timing advance (power&fuel efficiency)

Hello: I look at the pictures that Rowdie posted, but dont understand exactly what he removed, the "black part" seems complete.

Can someone explain?

Thank you.


I didn't notice a difference either.
Now I just have to find it. I think it is in the glove box and the glove box is in the garage. Here are the pictures. Resistor will be wrapped with other wires

PS. Found my car phone charger too.
 

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1987 Mercedes-Benz 560 SL
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973 Posts
EZL Mapping Resistor

Here it is, and where it's at. Mine was originally at the bottom of the cables in this bundle, and wrapped in electrical tape

I took mine out and have left it out, but the improvement is subtle at best. I always buy 93 octane anyway, so I don't think I need it.

Good road,
 

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W107 W113
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1,327 Posts
You engine bay looks great, all your plastics look like new. Did you clean them with something, did you get them bleached?

Regarding the octane vs. power discussion, I am very sure our engine do not have knock sensors, which means that using higher octane will not give you more power, actually the opposite.

One should always try to use the "lowest possible octane"

The question then is, if without this resistor, and you continue to use low octane fuel the engine still does not "ping", it means you can run even more advance timing if you use higher octane.

Can the timing be changed by turning the distributor?

In europe we have 91, 95 and 98 or 100 octane fuel, and 91 oct and 95 cost the same, so no reason to use "normal".
 

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One of the BW Old Guard/R129, W204 Moderator
1997 SL500- 40th Anniversary
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7,166 Posts
...One should always try to use the "lowest possible octane"...
Regardless of knock sensor or not, I do not agree with this statement, unless it is issued from an economical standpoint.

On the 560, timing is not adjusted by the dist, but is a function of the programming in the EZL.

560SL has a comp ratio of 9:1 (just researched this recently)...
 

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W107 W113
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1,327 Posts
The knock sensor will adjust the timing according the the "engine pinging" -pre-combustion.

This being said, cars with KS will try to run the most advance possible=more power/efficiency with a given fuel (oct rating), so it you have a KS and run high oct fuel, the timing would advance.

Inversely, if you use low oct fuel, the KS will retard the timing, resulting in less power/efficiency.

This can be noticed with the use of the "dial" on the euro cars, where you can run low oct fuel, but you notice an increase in fuel consumption and less power.
 
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