77mm Supercharger Pulley - MSL Dyno Test

[AMGeed]

Jules



Keep us posted as my key concern is cooling. Like Tony (Ginger) has stated, we all know cooling is pretty much the main issue. I've always thought that any mods in addition to what I'm already running will require cooling upgrades which is what is putting me off! Not that I don't want to improve the cooling, but it's factoring in approx an additional £1K on top of any pulley costs whether that be crank or s/c. Recovery times are one thing, but I rarely do constant repeated runs, my main concern would actually be safety of the engine

Exactly my concerns too before going for a 77mm one.
Pity I have to lash out on my eldest daughters wedding in June or I'd be on this like a rabid dog

 

[Mrhanky]

I'm so tempted by this, as I don't do prolonged recurrent runs cooling hopefully won't be a huge issue.

 

[AMGeed]

I'm so tempted by this, as I don't do prolonged recurrent runs cooling hopefully won't be a huge issue.

Same here. Never likely to track the car, so for occasional fast road use only??

 

[Ginger55k]

I'm so tempted by this, as I don't do prolonged recurrent runs cooling hopefully won't be a huge issue.

Same here. Never likely to track the car, so for occasional fast road use only??

Cooling will be an issue as your going to be generating much more heat across the full rpm range, it just means your ECU takes charge sooner to spoil your fun. (and I doubt many would know its happening without live data logging)

Its not just at high rpm the temperatures increase at idle for IAT is higher as the spinny thing spins faster providing more air, unfortunately compress a gas you generate heat there is no getting away from it.

Trust me on a stock 55 split the cooling, killer chiller, pump upgrade trunk or front mounted tank and HE upgrade then drive it

 

[Mrhanky]

Cooling will be an issue as your going to be generating much more heat across the full rpm range, it just means your ECU takes charge sooner to spoil your fun. (and I doubt many would know its happening without live data logging)

Its not just at high rpm the temperatures increase at idle for IAT is higher as the spinny thing spins faster providing more air, unfortunately compress a gas you generate heat there is no getting away from it.

Trust me on a stock 55 split the cooling, killer chiller, pump upgrade trunk or front mounted tank and HE upgrade then drive it

Are you saying address all those cooling mods before even doing a pulley change / remap?

 

[Ginger55k]

Are you saying address all those cooling mods before even doing a pulley change / remap?

No not at all, cooling is not sexy though is it, well not like a pulley upgrade or a different header system.

But if you did all of that on a stock car and then drove it you would be surprised at the difference.

 

[Mrhanky]

No not at all, cooling is not sexy though is it, well not like a pulley upgrade or a different header system.

But if you did all of that on a stock car and then drove it you would be surprised at the difference.

No its not at all exciting but I understand the importance. At the moment all I have is an uprated pump, so basically no cooling mods at all. I would consider a He but couldn't justify the costs of a killer chiller.

Not sure on the IAT issue at idle or even low revs as the SC clutch is disengaged is it not?

 

[Ginger55k]

Not sure on the IAT issue at idle or even low revs as the SC clutch is disengaged is it not?

Correct, meant idle speed of the SC through to maximum rpm

 

[Mrhanky]

Correct, meant idle speed of the SC through to maximum rpm

Ginger you have popped my ignorant bubble I was enjoying. Trouble is you talk sense and it's kind of what I hoped wouldn't be the case.

 

[ACID]

Split cooling or Killer Chiller is advised with this pulley.
Smaller belt helps and I have never been a fan of the BWK but that is just my opinion

Acid

 

[John]

Trust me on a stock 55 split the cooling, killer chiller, pump upgrade trunk or front mounted tank and HE upgrade then drive it

What are rough prices for these cooling upgrade options anyone know?

I think I need to look into it next!

 

[simon1966]

What are rough prices for these cooling upgrade options anyone know?

I think I need to look into it next!

Probably around the £1K plus mark John for Killer Chiller or Olly's tank like Ginger has.

The reality is that we all pretty much know we need it, but as Ginger says it's not a sexy upgrade. I don't think I would consider extra pulley mods on my car without upgrading the cooling first.

For me my car is a keeper so it's worth the outlay, but only when funds allow unfortunately.

 

[Ginger55k]

What are rough prices for these cooling upgrade options anyone know?

I think I need to look into it next!

In order i would....

1) Best bang for buck, buy an ELM OBD2 module and torque app about £15 to monitor exactly what the car is doing regarding IAT's and timing.

2) With the above you can see how your IC pump is performing, and upgrade if required.

3) The stock IC HE is very small not the best design, an upgrade not only increases the surface area of the heat exchanger but also increases the water volume in the circuit.

4) Splitting the two cooling circuits, the inexpensive way with a small reservoir in the engine bay, or more costly trunk or front mounted tank but this gives you much more volume in the IC system.

5) Killer chiller, reducing the temperature of the IC system further using the cars air con, now we start to get to the point where the IC HE can act in reverse and some have removed or by-passed the HE altogether.

6) Meth or water spray cooling.

For most stop at 2, but understand that IAT's will increase with either crank or SC pulley upgrades, and its all about what you cannot see when things start to get hot under the collar, and I refer to what the car will do to prevent you from going bang, however the engine timing/fueling may be altered should you enter the range governed by the ECU, driving the car in this condition is not ideal either so that's why its important to data log to ensure you are not unknowingly in this area, its very difficult to really feel this with 500bhp under your right foot unless its obvious at the extreme end with the SC clutch disengage.

Fact, colder air more fuel more power more heat and so the battle starts, its finding the happy medium and that's your choice, some choices in 5 or 6 are routes I would not take and that's due to the decreased safety margins within the ECU and the cars design.

 

[ACID]

5 x 77mm will be in stock next week

2 x Killer chillers already in stock

Acid

 

[ACID]

We have a car in a forum member getting the following done

77mm Pulley
Split cooling
Kleemann headers
CM30 Pump

Will be interesting to see how much power it will make on a E55 as we normally see more power on the CLS.
Hope to see maybe around 620 bhp plus

Acid

 

[1my]

Quite good results with this new pulley.
What pulley/remap combination would suit a cls 55 that sees the odd spirited run?
i dont use my car very much, also dont want to get too involved with changing lots of parts. I already have a secondry and resonator removed.

 

[John]

CM30 Pump

Is that the pump you guys fitted to mine the other day?

 

[ACID]

Is that the pump you guys fitted to mine the other day?

yes

 

[John]

3) The stock IC HE is very small not the best design, an upgrade not only increases the surface area of the heat exchanger but also increases the water volume in the circuit.

4) Splitting the two cooling circuits, the inexpensive way with a small reservoir in the engine bay, or more costly trunk or front mounted tank but this gives you much more volume in the IC system.

How much do these options cost typically if the Killer Chiller is around a bag of sand?

I was considering these as, although I only have the standard EC pulley (but other mods), I would prefer to know the car is properly cooled.

Or does the CM30 do the figures when running just the uprated EC pulley?

 

[ChrisA]

Totally agree with Tony (Ginge)

In order i would....

1) Best bang for buck, buy an ELM OBD2 module and torque app about £15 to monitor exactly what the car is doing regarding IAT's and timing.
Well worth the £12 I spent

2) With the above you can see how your IC pump is performing, and upgrade if required.

3) The stock IC HE is very small not the best design, an upgrade not only increases the surface area of the heat exchanger but also increases the water volume in the circuit.
No brainer purchasing the larger HE

4) Splitting the two cooling circuits, the inexpensive way with a small reservoir in the engine bay, or more costly trunk or front mounted tank but this gives you much more volume in the IC system.
Weistec Trunk Tank works a treat

5) Killer chiller, reducing the temperature of the IC system further using the cars air con, now we start to get to the point where the IC HE can act in reverse and some have removed or by-passed the HE altogether.
Great mod for little price

6) Meth or water spray cooling.
I have it installed and have it set for high boost