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Performance MODS for the R171 Tuning and Performance modifications for your SLK

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#1 Old 06-18-2014
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Here it is !

Here it is ! Just landed . . .

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#2 Old 06-18-2014
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I Hope I can do the JOB !
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#3 Old 06-24-2014
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Think it needs a pulley extracter to remove ?
And i take it its held on by a allen key / bolt ??

Ive not looked at mine .

Looks pretty straight forward job to do .

Keep us updated and do you feel the difference in power ??

Oh what was the cost ?

Thanks
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#4 Old 06-25-2014
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Is it installed?! Please keep us posted on this!!
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#5 Old 06-25-2014
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So . . .

. . . Time to uninstall, and clean all the intake system :









And Here it is . . .

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#6 Old 06-25-2014
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Here is the "Job" . . .

Uninstalling of the Puley:




New Puley Already mounted:




Cleaned injectors . . .




Mounting Process !

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#7 Old 06-25-2014
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Quote:
Originally Posted by Delucas View Post
Think it needs a pulley extracter to remove ?
And i take it its held on by a allen key / bolt ??

Ive not looked at mine .

Looks pretty straight forward job to do .

Keep us updated and do you feel the difference in power ??

Oh what was the cost ?

Thanks

Yes, I have removed it with a pulley extracter.
Mine don't have any bolt !!!

The most difficult part of the JOB is to install the new pulley !!!


I have a new ENGINE !!!
The compressor is making 0,9 Bar peak, and the engine response is awsome.
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#8 Old 06-25-2014
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Originally Posted by Dickinson1994 View Post
Is it installed?! Please keep us posted on this!!

Job Done.

I have a new ENGINE !!!
The compressor is making 0,9 Bar peak, and the engine response is awsome.
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#9 Old 06-30-2014
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Is the pulley just press-fitted? No locking screw?

Then maybe temperature treatment will help.

Aluminium expands much more when heated, than steel does, so putting the pulley in an oven, heated to 120-140 degrees Celsius, should expand it enough for it to slide on the axle.
Just to make sure, you can at the same time treat the axle with coolant spray, or dry ice, shrinking it a bit.
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#10 Old 06-30-2014
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this pulley should be carbon steel made..it want splip any time soon (if it is aluminium, slipping is just a matter of time...and you dont want that while spinning at 18.500 rpm). Did you also remapped the ecu?
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#11 Old 06-30-2014
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Looked like black anodized aluminium on the pic. Even a steel pulley could be heat treated on.

Mods done:
SLK350 Brakes.
18x8" CMS 5-spoke rims.
10mm spacers.
John's 3rd brakelight
Curro101 metal plate
UltraRacing Tower Strut Bar
Short Antenna
S160 Head Unit
SmartTop

Mods to come:
LED Lights
WindRestrictor
Rain Sensor
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#12 Old 06-30-2014
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Quote:
Originally Posted by Gork View Post
Is the pulley just press-fitted? No locking screw?

Then maybe temperature treatment will help.

Aluminium expands much more when heated, than steel does, so putting the pulley in an oven, heated to 120-140 degrees Celsius, should expand it enough for it to slide on the axle.
Just to make sure, you can at the same time treat the axle with coolant spray, or dry ice, shrinking it a bit.
Yes, mine it's just press-fitted. No locking screw.

I have tried that.
I heated the pulley with a torch, but it only helps on the first centimeters.
The rest of the way, I could not get it to go without screwing a nut !
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#13 Old 06-30-2014
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Quote:
Originally Posted by GOLDFISH View Post
this pulley should be carbon steel made..it want splip any time soon (if it is aluminium, slipping is just a matter of time...and you dont want that while spinning at 18.500 rpm). Did you also remapped the ecu?

Of course the pulley is Carbon Steel made .....

I don't remapped the ECU ! YET !!
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#14 Old 07-01-2014
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Well done, good job.
I really wonder the results.
Keep us posted.


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#15 Old 07-01-2014
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Well done, good job.
I really wonder the results.
Keep us posted.

I have a new ENGINE !!!
The compressor is making 0,9 Bar peak, and the engine response is awsome.
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#16 Old 07-11-2014
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That looks fantstic.

Wherre did you get your pulley from?
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#17 Old 07-11-2014
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how did you clean your injectors?
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#18 Old 07-11-2014
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Originally Posted by aykayross View Post
That looks fantstic.

Wherre did you get your pulley from?
Hi aykayross,

I got my Pulley from "IBF", a Polish manufacteur.
You can buy it from Ebay.
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#19 Old 07-11-2014
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Quote:
Originally Posted by aykayross View Post
how did you clean your injectors?

I remove the complete injector ramp.
I fill it up with gasoline and put some pressure on it with a syringe.

Then I apply 1,5V with a "AA" battery and 2 wires, at the 4 injector one by one.
IMPORTANT: apply this 1,5V to the injectors with short blasts.

And there you go.

If you search on Youtube I am sure you'll find some videos with the process.
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#20 Old 07-16-2014
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With a lot of help and advice from vinnypt , I bit the bullet and bought and installed the smaller pulley ( 70 inc postage direct from the seller ) . With the extractors I had , I found it impossible to remove the original pulley , but luckily I know some guys that do reprogramming etc and they changed them over for me ! There are a couple of hard to get to bolts and screws and some of the Mercedes jubilee clips are a pain , but worth it in the end .

I must say I had my doubts , as you never really gain what the sellers claim etc , it's still early days , but I have to say the car seems to really notice the difference !

As the revolutions of the Kompressor are up , the characteristic " supercharger Whistle " is slightly stronger when you put your foot down , which I personally like , very MadMax , jeje .
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Last edited by curro101; 05-28-2015 at 05:31 PM.
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