besides the physical differnces,

are there any differnces between the evo 8 & 9 w/g actuator springs?

does 1 model have a heavier spring / running more preload than the other?

TIA

 

I'm 99% certain they both have 10.5psi springs... the difference is in fitment only.

 

From what we have seen, both OEM actuators have roughly an 11-12 PSI spring (some variation).

Granted, these are not OEM units, but our repalcements, but you can clearly see the differences in the mounting brackets. The rod lengths are also slightly different.



The units are NOT cross compatible.

You cannot put a 9 actuator on an 8-based turbo, nor can you put an 8 actuator on a 9-based turbo.

Some people have tried but it results in an improperly installed unit that will undoubtedly have actuation problems that can negatively affect the performance of the car.

Here is an 8 actuator on a 9 turbo. The bend of the rod will not permit proper function of the actuator. The acutator rod does not move in a linear fashion.



Here is a properly installed unit that has both ends of the actuator rod parallel to one another which is a properly setup component. This results in the most linear and precise actuation of the unit.

 

awesome illustrations mike!

 

Hey Mike,

I'm still waiting for that new bracket to convert my Forge 8 WGA to a 9. By the way the one in the picture is still working just fine.

 

is the force performance wga any good are they just a rebuilt stock one?the reason i ask is because i just broke my second one,so i just bought a forge today bought have not yet installed it?how does the forge compare to the force performace?thanks...

 

^anybody?

 

IMO the Forge unit is preferable. I have the FP WGA on my Green and there is absolutely nothing wrong with it, but I favor the Forge WGA that I had on my TME. Just my impression though.

EDIT: The Forced Performace HD unit is supposedly an 18 PSI and above actuator. That is, you can't set your boost level any lower than 18#. According to FP's literature it has a stronger than stock actuator spring. Its overall appearance is quite similar to the stocker, however the cannister is just a bit longer than the stock one.

Personally I just love to tinker with actuator pressures and the Forge unit has superior resolution(finer adjustability). It seems to control boost a bit more positively at higher boost levels( from 24 PSI on up). Also, it is undeniably a much prettier piece, being that it is fashioned from polished aluminum billet as opposed to galvanized metal stampings. Additionally, it has those neat little Allen fasteners which give it that classic, bits n' pieces, British, racer look.

 

I'm not familiar with any situation involving anyone "expecting" a different bracket for this purpose.

It's not that simple anyway. The rods are different as well, preventing any swapping of any parts to make them cross compatible.

 

Which Forge rod do I need? Send it with the bracket you were going to get for me.

 

I never told anyone I was going to "get" a bracket for them.

Sorry bud.

 

Never told anyone or don't recall telling anyone?

 

I'm not sending anyone a bracket nor a rod. Period.

The units are designed to be application specific and the differences are such that they cannot be modified to from one spec to another. We don't send out the parts for individuals to do it, nor do we do it here ourselves.

If you have an 8-based turbo, you need to be using an 8-specific actuator.

If you have a 9-based turbo, you need to be using a 9-specific actuator.

End of story.

 

Easy tough guy. If you can't remember our conversation just say so.

 

Here are pictures of my EVO 8 Forge WGA converted into a EVO 9 WGA. (Modified before forge released there 9 WGA)

Has worked with no issues.

Does Forced Performance make a EVO 9 WGA , the stock looking one?

Matt