EDgineered

Can anyone with Evosport pulleys on a C55 send me the size of the pulleys? And the replacement belt #?


Trying to put together a makeshift set of other types of pulleys.


Thanks

dre5373

I was going to pull mine out to (FINALLY) install it this week, I'll try to find my calipers lol

JonMBZ

evosport told me these didn't make any power and were only aesthetic what do you want them for? Not to mention they went bankrupt lol.

EDgineered

I wasn't asking for opinions, I was asking for pulley sizes.

UDPs allow an engine to rev faster and this has been proven for decades. Decades. With time slips.

JonMBZ

You don't have to request opinions to get them obviously telling you so you don't waste your time. This is info they told me when I asked about them. So have fun, I am sure there will be people lining up to help you...

EDgineered

maverik259

lol its not about making power...this isn't like a s/c pulley to increase boost. You don't put in a better transmission to "add power" but you do go faster! lol

GLW the search ED (although your name is eerily close to Erectile dysfuntion-gineered) lol just saying!

cm60k

UD pulley is fantastic upgrade, after install the, car running smoothly,

i didn't dyno the car, our fine friend Jason(503C43 ////AMG) did:

https://mbworld.org/forums/c36-amg-c...run-c43-2.html

ZAYED,,

EDgineered

hahaha, I never looked at it like that. no worries on the E.D., I built my own device to prop it up.

Duncan64

oh boy ... lol.

dre5373

FYI, weights are as follows:
Power Steering Pulley @ 373g
Water Pump Pulley @ 287g
Alternator Pulley @ 93g
and for the hell of it, Napa belt @ 93g

dre5373

Sizes as follows:
Power Steering @ 5.5840"
Water Pump @ 4.7170"
Alternator @ 2.4825"
Belt is NAPA 25-060945


PS and Alt pulleys were measured for overall diameter of the pulley. If you'd like additional measurements to the ribbed surface of the pulley let me know, looks like install will be next week so I have a few days.

EDgineered

Awesome, thanks for the measurements and pics, the lip looks as deep as the stock lip so should be good.


Hopefully the pulleys get you to 11.999! It would be the first N/A C55 in the 11s as far as I know.

cm60k

Thankss for sharing those info. Dustin..,

Is that V-belt length (6pk-2415)...??

ZAYED,,

EDgineered

Belt for the underdrive pulley set:
Belt is NAPA 25-060945 which translates to a 6 rib, 94.5inch belt. The belt at Dayco is 5060945
Many other brands call it a 945K6




I put together an underdrive pulley kit and got all of the parts off of eBay! Thanks again for the info on the parts Dustin...


Evosport Pulleys
Power Steering: evo.mpps.3v
Water Pump: evo.mpho.3v
Alt: evo.bpalm5.pw


The water pump pulley looks different than some other Evosport C55 pulleys I have seen but it is the correct same size, bolt pattern and part #.


The Alt pulley is a 7 rib pulley instead of 6 rib (for an M5 but still Bosch alt) and has a built in spacer on the back, everything else is the same. Going to drop it and the stock alternator pulley off at the machine shop in the coming weeks to get the spacer cut down. The extra groove wont hurt anything.


Have a new power steering pump on the way (couldn't get that thing to shut up!) and have had the AMS crank pulley waiting to be installed for some time now.


Sooo, in the coming weeks I will install the lightweight crank pulley and underdrive pulley setup. Cant wait!


The pictures shown are the pulleys I have and the pictures of another members pulley kit along with the same crank pulley.

dre5373

Sorry Zayed, don't know how I missed your post, looks like Ed answered you though...



Glad I could help Ed, looking forward to hearing how it works out for you!

cm60k

No problem Dustin,

Thankss for reply guys..

ZAYED,,

EDgineered

So I finished the install of the underdrive pulley set and lightweight crank pulley. Mas Powerrrrr! revs faster, shifts smoother, shifts faster, just pulls harder and revs up faster through the entire range. *feels* like a little more vibration due to the lighter crank pulley but who knows...

I am also going to space out the A/C unit in the coming month(s) so that I can use a short belt to bypass the compressor when desired but use a slightly longer belt to use it when needed.

Gonna need to add 265 R compounds to the list of mods.....


.

Tump43

For anyone who's interested I just pulled the Evosport under drive pulley set from my car and am willing to sell it, the Alternator Pulley, Water Pump Pulley and Power Steering Pulley as pictured below.

silverjimm

I'm very interested in the setup. I have been looking for a set.

austinholloman

Anyone have a set of these they are looking to sell?

C55.vick

I’m also interested in a UDP set. I’ve been trying to look for these but haven’t come across anything for sale. Looks like it’s been discontinued. Any leads to parts that could possibly interchange with our C55’s? Or anyone here selling?