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  1. 5 points
    Now I know a lot of people believe these twin clutch gearboxes are as fragile as glass, but this is not completely true. In theory, the gearset and gearbox casings are extremely tough and should be able to handle up to 1000hp with no need for upgrades. However, there are other areas of the gearbox which leave a lot to be desired. I will go into further detail regarding these areas in other topics, but here I will discuss some of the issues associated with the Mechatronics unit, or more specifically - the valve body. As with all automatic gearboxes, the TC-SST uses a fluid control system to move clutches, shift forks and cooling fluid to the clutches. When the valve has problems, it can catastrophically effect the operation of the gearbox and cause multiple other parts failures inside the box. The valve body core itself is of cast aluminium construction, machined to create the bores and surfaces on the unit. The bores contain valves that are operated by electronic solenoids on the TCU half of the Mechatronics unit and these valves are machined hardened steel. Issues arise when material becomes caught between the valve and the bore, which has the ability to either damage the soft aluminium bore - causing leakage - or jamming the valve in the bore which causes a whole host of other issues depending on the particular valve in question. Maintenance is a huge factor in lifespan of valve bodies, as reducing the chance of damage to the valve body from stray materials will obviously statistically reduce the chances of valve body failure. For this reason we recommend changing the fluid and filter every 20-30k km maximum for street cars and 2.5-10k km for hard driven cars or race cars. We had a car come in that we had performed a build for, including a 10 plate custom clutch setup and Kozmic reconditioned shift fork 4 - however we had found no reason to modify or replace the existing valve body as it was performing well and holding pressure prior to the build. The car drove well for a period of time before the owner contacted us and advised us that the car had become almost undrivable and lost even gears. We knew the shift fork was not responsible for this, so we received the car and began testing the valve body for failure. It became apparent that a valve had become stuck, causing the car to lose even gears - but more concerning was that the valve we found stuck was also causing the odd clutches to not properly disengage. The car was driving in 6th at 110kmh on the highway when the failure occurred - thrashing the car did not cause this failure. As you can imagine - having the odd clutches partially engaged while the car is in 6th causes significant heat and will eventually destroy the odd clutches. Here is a photo of the Mechatronics unit complete prior to inspection: Here is a photo of the valve body completely disassembled for inspection, including valve removal: We had removed the entire gearbox in anticipation of finding destroyed clutches, and boy did we ever. The even clutches remained in perfect condition, however, the same cannot be said about the odd clutches.... I'll let the photos speak for themselves: We have seen many, many different failures from Mechatronics units and I will endeavor to keep this thread updated with the different failures we have found over the years. If you have any requirements for your Evo X, whether it be a manual or SST, feel free to contact us anytime to see what we can do for you! Regards, Sam BOOSTIN' JUICE PERFORMANCE sales@boostinjuiceperformance.com 0435 035 407 Unit 2/2 Verrell Street, Wetherill Park NSW 2164
  2. 4 points
    Hi guys and girls! Some of you already know us and what we do. Here's a little intro and history for those who don't know. I've personally been a part of this forum for a while and ventured into starting my own business on the Evo platform back in 2014 and we were lucky enough to secure an awesome shop at the end of 2015. The business has since spread out a little into other Mitsubishi's and older evo's too, but our primary platform remains the CZ/CY/CX. We do all major work including tuning on Ralliart Colt, Pajero and Triton models too. We have very close business relationships with a number of shops in the USA, including ETS, MAP and Kozmic, being our sister shop. We are Australia's only licensed installer and distributor for all Kozmic products and had the privilege of being invited to the USA by David and Eric for a one on one technical conference for all things twin clutch. Needless to say we have picked up a whole host of tricks and secrets on our 12 day stay with Kozmic. Here are a few photos of what's been happening recently at Boostin' Juice Performance and we will be keeping you updated on what's in store for the future! The SLO20T race car getting some love: And the new and improved SST and engine building room getting all cleaned up: Contact details: Boostin' Juice Performance Unit 2, 2 Verrell Street Wetherill Park NSW 2164 Ph: 0435 035 407 Ph: 0478 800 443 E: sales@boostinjuiceperformance.com E: sam@boostinjuiceperformance.com W: currently under construction F: www.facebook.com/boostinjuicetuningsydney Operating hours: Mon-Fri 9am - 8pm Sat 10am - 4pm Sun By appointment only
  3. 2 points
    Link to our online store below. http://store.gtpumps.com.au
  4. 2 points
    The OEM gears in the Evo transfer cases are fine for stock applications, but are prone to pitting, galling and shearing in high torque applications and particularly in sustained motorsport use. This shows up as the characteristic “death whine”. Finally, we have a real solution to this problem. Together with Brena Corse, we can now offer transfer case crown wheel and pinion options that are of unbelievable quality and durability. These are made in Italy on the best machines possible, by a maker who has supplied to Group A factory rally teams, and OEM supplier to Ferrari and Bugatti. Due to the setup procedures required for the unique Brena gear profile, we are unable to offer the transfer case crown wheel and pinion sets as a stand alone item for sale. They must be installed by us at Neat Gearboxes (Adelaide, South Australia) to ensure correct fitment – you can contact us here. What you get: transfer case stripped and inspected chemical clean components bead blast housings new Brena Corse crown wheel and pinion (choices below) new pinion bearings new pinion lock nut new carrier bearings new seals and O rings Dimple magnetic drain plug ACD clutches inspected and pistons pressure tested assembled to custom specifications to ensure reliable running in extreme applications 700ml NEO RHD 75w90 gear oil (recommended fill for F1, extreme motorsport use) Suitable for: Evo 4-6; Evo 7-9; and Evo X Price (in Australian dollars, includes GST – international customers will save 10%): ISF option $3,590 Isotropic Super-Finishing (ISF) improves surface finish and reduces oil temperatures. An excellent option for a tough street car, or sprint/time-attack where the runs are not especially long (where oil temperatures are not likely to spike). 800Nm capacity. Carbon Lafer option $3,990 Carbon Lafer leaves a diamond-like carbon deposit on the surface of the gears, leading to incredibly durable gears even in low oil situations and in extreme temperature situations. Cutting edge technology. Recommended for sustained circuit and rally competition use, or where temperatures are very high. 800Nm capacity. Drag race option $4,090 The drag race spec gears are made of a special steel used extensively in F1. The key advantage is that the teeth will not break with loads up to, and beyond 1000Nm.
  5. 2 points
    We've been very quiet on the forum, mainly because we've been so busy in the workshop! Anyway, some interesting developments are brewing, including new Evo X dog sets, and most exciting for us - new Klingelnberg-cut transfer case crown wheel and pinions. You'll hear about these in the next few weeks, available for Evo 4-6; 7-9 and X. Anyway, a few things we've come across recently. Evo X with peened and polished gears, PAR final drive, and our centre diff upgrade. Evo II with an Albins 5-speed dog box getting ISF micro polished. VR4 viscous couplings getting checked for breakaway torque. Notice the variations of values - all should read the same!
  6. 2 points
    Welcome to Sam. I will be reordering the Platinum forums in tomorrow AM, but please feel free to start new topics in your forum right now. All the best on behalf of the all the Admins and Moderators.
  7. 1 point