I have a stock roadster srt-6, tomarow morning i will be getting the 185mm crank pulley installed with a flash tune from Jerry and then on the 21st get it dyno tuned. Can anyone tell what to expect by doin this mod and about how much boost i will be making

 

Probably somewhere between 18-21 psi of boost. You will need to get some aftermarket cooling put in place before the hot summer months come as the 185 cause the S/C to spin a good bit faster. Either go with the Supercooler from Needswings or talk to Eurocharges as they also have an aftermarket heat exchanger.

As for HP bump and such, it varies by car.

 

You can expect to run dangerously lean. Squirrel Crusher

 

I don't. I have the paper somewhere around here. Never had trouble running lean. Though yes, some people do report running a bit lean...but then again, Jerry has come a long way in his tunes in the past couple years.

 

I don't now and never have run lean with my 185 LET pulley.............tuned by the pros at InMotion.




EDIT: I also constantly monitor my AFRs via Zeitronics wideband

 

with js the pulley and tune no intake what kind of times can i expect to see

 

you can expect to see the dotted lines on the road get very blurry!!

lean condition can exist on the rear cylinders without being seen by afr readings. this is very common on the 5.5 s/c v8 engines. many are going to the ttm motorsports open loop fuelrail system to correct this along with a new tune

 

I think he's trying to get a straight up answer such as:

a) 20whp
b) 30whp
c) 40whp
etc...

NeedsWings' website published that the ASP 178mm pulley by itself gains a modest 20whp, with most people getting much more, especially combined with a tune.

So with that logic, with the 185 I am assuming between 20 and 30? It spins a lot faster than stock but between a 178 and 185? 185-178=7mm difference. I can't imagine it can be anything groundbreaking above the 178mm's numbers.

I am interested to know if anyone had both 178 and 185 pulleys and can share their real experiences with them. I ordered the 178 because I read it produces a little less heat and quite a few members here have the 178 setup, so I am following in their footsteps. I was really tempted at the 185 though, I won't lie to ya.

 

Great news i got the 185mm pulley installed and without the tune on a dyno jet dyno it made 295 to the wheels with the dyno tune it made 329 to the rear wheels. could have gotten more but jerry was say that the dyno jet dyno reads low and also i started to run lean so he dumped so extra fuel in the tune, but stated that i would need e55 injectors or a boster pump for extra fuel. Keep in mind the number are with no needswing intake so im guess with the intake and injectors i will be a lil over 350.

After driveing the car from the dyno with just the 185mm crank and tune can i say amazinggggggggggggggggggg 40mph under will shread the tires using the autosick cursing at like 30mph in 2nd gear dwn shift to 1st and punching the car movessssss the when the auto transmission changes back into 2nd the car will chirp the tires HARd friday i will be goin to my local track before i get the needswings intake to see what i run..

 

and let the modding begin....another one hooked...lol

 

you were told by the tuner that you need more fuel and your planning on going to the track instead? dude, hold off on the track and lets add the needed fuel first.

 

Jerry was sayin that he set it up where it would b safe to drive but i think i will take ur advise and go ahead and do the fuel before i take it out there but let me ask you this. Yesterday i found out that after i put the 185mm on the car my keyway on the crank broke. what could cause this and would the whole crank haft to b pulled out to change the keyway

 

that right there is why the c3 is so much better than the crank pullys!! it seems more and more folks take this route only to screw up the crank. if you sheared the keyway your crank is toast. in addition to replace it you are eliminating all the torque values that were used to hand build the engine. basically you just wasted a perfectly good hand built engine

if the keyway slipped out of position and the crank pulley spun on the crank you most likely have scored the crank . polishing may help but on the benz forums 9 out 10 cranks req. replacement. if you sheared the pin the crank has to be replaced. welding the keyway will throw the balance off

 

I have not heard of a single person with a properly installed crank slip the keyway. Plenty of people have been running the 185mm pulley for years including tracking the car. I would include myself in this list.

Also have you seen the way the hand build engines are made? They have a machine that cranks the bolts down to the proper specs at a single time.

Don't get me wrong no one wants to blow an engine but let's not make the handbuilt aspect of the engine into something magic.

 

Well for the sake of not arguing this one...lol...you won't know the damage until you take it apart. And, all engines are handbuilt one way or another, just some are done with a little more finest...hopefully the keyway can be cleaned up and all will be fine. That is why if you haven't done something like this before, find a mechanic who has experience in engine repair/rebuild...not the local grease monkey either...lol....good luck...hopefully the key stock broke...

 

this is a common thing on the benz forums. there are more and more threads popping up were the pulley is installed improperly and causing huge damage. the key word is "PROPERLY" the possibilty of damage for me anyway outweighs any performance gains.
as for handbuilt engines the machines may torque the bolts but the assembly is done by a single builder and everything is documented unlike an assembly line engine were they are handled by dozens of people . magical ? no. able to be replicated? again no

 

You can inlude me on that list. I have been running my 185mm crank pulley for two years with no problems.

 

but my machanic was telling me the the keyway broke off in the 185mm keyway slot so they ordered another keyway and they are goin to remove the crank seal to get the rest of the old keyway out and put the new one in and im ready to rock. with that being said he was thinking that the old keyway was already weakinig and with the extra spin on the crank with the new pulley it broke;(

 

if this happened, you were lucky. Never use an old key stock, Never, never...make sure they clean the keyway, which is where the key stock will go. Should fit in the keyway firmly. Hope you lucked out on this one...

 

yea im hoping i lucked out on it .......... do you think it was because of improper instillation when i bought the pulley jerry stated that if i dnt torque the crank bolt to like 350 i believe that it would mess up the crank. when my mechanic put the pulley on he used a impact so idk