Evosport Pulley Help Please
02-15-2011, 03:02 PM
#28
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Hmm maybe Evosport can give me an answer, however I would love if someone neutral could give me input as well. Thanks in advance
I just installed an evosport 175mm pulley last night that I bought off a member (worththewait). Great guy by the way 
.....The thing pulls hard the few times I floored it last night, but I was kind of iffy if the shop my friend took the car to yesterday put in a new crank bolt pulley since they only charged me $10 for the bolt when I saw the invoice last night. Because of that I didn't push it much. I didn't see any wobble at all, but I can give you a more elaborate review in a couple days.
.....The thing pulls hard the few times I floored it last night, but I was kind of iffy if the shop my friend took the car to yesterday put in a new crank bolt pulley since they only charged me $10 for the bolt when I saw the invoice last night. Because of that I didn't push it much. I didn't see any wobble at all, but I can give you a more elaborate review in a couple days.1. full upgrade - H20, Alt, PS, Crank, Idlers, Belt, bolt
2. crank kit - 178mm Crank, H20, belt
How are the additional pulleys included in the Evosport package for the E55, beneficial vs Stock?
I have read somewhere that one or more of the pulleys that Evosport supplies is metal as opposed to the oem plastic. Also something about one of the pulleys having extra ribs or a wider diameter to lesson the chance of belt slippage or something along those lines(it is a pulley that does not have direct contact with the belt if I remember correctly)
Could someone please elaborate on this.
Could someone please elaborate on this.
The pros and cons of under driving our E55 AMG vehicles?
Is it worth it for the extra pulleys?
Thanks
Brad
02-15-2011, 05:13 PM
#29
I will be happy to answer some questions with our point of view.
You most likely need a modified bolt. All evosport pulley kits come with a modified stock bolt to properly fit into the pulley without contacting the pulley itself. If you use a stock one, the head may be too large for the pulley and it may walk off the snout and can cause a MAJOR failure.
YEP! And not just new, but new and modified.
We have a couple kits.
1. full upgrade - H20, Alt, PS, Crank, Idlers, Belt, bolt
2. crank kit - 178mm Crank, H20, belt
The other pulleys are just under-drive. They all help to reduce the drag on the system, and free up lost power (just like a lightweight flywheel or differential upgrade). So yes, they are better than stock. They are good for 4-8 wheel HP, so not huge, but everything adds up!
yes, our complete kit is very complete. We have gone to great lengths to prevent belt slip and slap.
The only con is if you don't drive the car hard. If you are just always tooling around, you will potentially have charging issues and have sub optimal PS and H20 Flow. By under driving, we are effectively raising the optimal RPM range of the pumps to a slightly higher than idle level. So for cars left at idle most of their life (ie: soccer moms, etc), this is potentially not a great upgrade. Now, I say potentially as it is not black and white. I have UD pulleys on my wife's car and never had a problem.
Yes, due to the anti-slip and anti-slap properties it is 100% worth it IMHO, but we make and sell them so I am biased.
Thanks
Brad
You most likely need a modified bolt. All evosport pulley kits come with a modified stock bolt to properly fit into the pulley without contacting the pulley itself. If you use a stock one, the head may be too large for the pulley and it may walk off the snout and can cause a MAJOR failure.
YEP! And not just new, but new and modified.
We have a couple kits.
1. full upgrade - H20, Alt, PS, Crank, Idlers, Belt, bolt
2. crank kit - 178mm Crank, H20, belt
The other pulleys are just under-drive. They all help to reduce the drag on the system, and free up lost power (just like a lightweight flywheel or differential upgrade). So yes, they are better than stock. They are good for 4-8 wheel HP, so not huge, but everything adds up!
yes, our complete kit is very complete. We have gone to great lengths to prevent belt slip and slap.
The only con is if you don't drive the car hard. If you are just always tooling around, you will potentially have charging issues and have sub optimal PS and H20 Flow. By under driving, we are effectively raising the optimal RPM range of the pumps to a slightly higher than idle level. So for cars left at idle most of their life (ie: soccer moms, etc), this is potentially not a great upgrade. Now, I say potentially as it is not black and white. I have UD pulleys on my wife's car and never had a problem.
Yes, due to the anti-slip and anti-slap properties it is 100% worth it IMHO, but we make and sell them so I am biased.
Thanks
Brad
Thanks Brad,
I appreciate the answers. It seems to be a great product.
I like the idea of the Anti-Slip properties, since this is a common concern.
Since the Crank is being overdriven with a larger pulley, doesnt underdriving the accesories mean the accesories are acutally running back to stock?
Also could you please tell me the means that your pulley is measured?
Is it a true 178mm rib to rib?
Thanks so much, I look forward to your replies.
02-16-2011, 12:11 PM
#32
