Hi All

Where to start? I am going to assume that since HPI has done this move to have RCU host the forums there are going to be HPI staff looking in regularly. With that being said within the forum at the HPI racing site there used to be a thread on how to update a Nitro MT to a Nitro MT2... Listing the necessary part numbers for the various parts to do the up grade, shocks, suspension, drive train etc. Now that I am ready to work on this particular project I find that I can't get those part numbers. Can the HPI staff if they are reading this please repost the information to this forum?

thanks
MC

While the Nitro MT 2 on the surface looks the same as the older Nitro MT, there are in fact a wide variety of changes and the difference between the two trucks is very significant from a "conversion" point of view, however a conversion can be done if you don't want to buy the Nitro MT 2 truck.

Upgrading your old Nitro MT to the brand new Nitro MT 2 can be done easily by purchasing just a few items. You can upgrade various parts of the truck one by one according to your budget, or you can upgrade everything at once!

Suspension
One of the biggest advantages the Nitro MT 2 has over the original Nitro MT is in the suspension. Longer front arms plus longer front and rear shocks provide a plush, smooth ride that allow the Nitro MT 2 to roll over just about anything. Upgrading the front end is easy ? you just need a few parts:

Front Suspension
85074 Suspension Arm Set (2 required)
85076 Front Upright Set
A280 Flange Shaft Set (use A284 3x30mm flange shafts)
Z242 E-Clips 2mm

Each #85074 Suspension Arm Set includes one front and one rear suspension arm, so you can upgrade your rear suspension arms at the same time. While the measurements of the rear arms are the same, they are much tougher and more durable.

To really upgrade the front suspension, you will need the longer front shocks of the Nitro MT 2. You can just move your Nitro MT?s rear shocks to the front, since the front Nitro MT 2 shocks are the same length as the rear Nitro MT shocks. This of course would require you to get a new pair of rear shocks:

Rear Shocks
86168 Flange Shaft 3x33mm
Z224 Washer M3x8x0.5
A716 Sport Shock Set (77-117mm)

The new Nitro MT 2 shocks have an improved design, with a bottom cap that threads on and will not ?pop off? when landing huge jumps. You can also get the front Nitro MT 2 shocks with the threaded bottom cap:

Front Shocks
A715 Sport Shock Set (70-103mm)


Front Bumper
While you?re upgrading the front end and it?s all taken apart, you can go ahead and upgrade the front bumper to the new brush guard style bumper. This is one of the most prominent outward features of the Nitro MT 2 and does help protect the front end in crashes and tumbles. Here are the parts necessary to update the front bumper:

Front Bumper
85071 Shock Tower Set
85072 Lower Mount Set
85073 Front Bumper Set
Z571 TP. Binder Head Screw M3x20mm
Z567 TP. Binder Head Screw M3x10mm


Slipper Clutch
The Nitro MT 2 slipper clutch is a new design using Savage monster truck parts and is made to slip less than the older optional slipper clutch. The Nitro MT 2 slipper clutch includes a new spur gear, however you must use the drive cups from your Nitro MT.

New Slipper Clutch
87138 Slipper Clutch Set


Engine
An easy upgrade from the Nitro Star 15FE engine is the Nitro Star T-15 Engine with pullstart. This engine is much stronger than the 15FE and although many Nitro MT owners have put in .15, .18 or even .21 engines in their trucks, we will list the information for the T-15 here:

T-15 Engine
15101 Nitro Star T-15 Engine with Pullstart


Drivetrain
The Nitro MT 2 features thicker dogbones, which in turn requires larger drive cups, diff shafts and axles. All of these components have been strengthened on the new truck to make sure they can handle the power of the new Nitro Star T-15 engine. While it is possible to upgrade the drivetrain of your Nitro MT to the specs of the Nitro MT 2, if you plan to upgrade all the suspension and drivetrain components, it would be cheaper (and much easier) to purchase a complete Nitro MT 2 truck, which would give you all-new parts plus all the updates in one preassembled truck.

However, for the Nitro MT owner who wants to upgrade a little at a time, we will list the parts necessary to update the drivetrain of the Nitro MT 2:

Drive Train
86225 Cup Joint 7x19mm (D Cut)
86226 Gear Shaft 5x38x7mm (2 required)
86227 Diff Shaft 5x26x7mm (2 required)
86228 Axle 5x36x7mm
86229 Axle 5x41x7mm
86230 Dogbone 7x86mm (2 required)
86232 Dogbone 7x83mm
86233 Dogbone 7x57mm
86234 Cup Joint 7x19mm

Many Thanks to the HPI Staff for posting this reply... it is exactly what I was looking for. Is there much difference in the parts numbers to upgrade the drivelines to handle the 18ss engine power?

Thanks
MC

I have all ready up graded mine to SS standards. Other then radio box and I keep my OS .15 CV-RX. Now all I want to add is a OS .18 TZ!!!!!!!!

Hey 46u

Is there a whole lot of difference between the ss and the mt2 i regards to driveline parts? I shorted myself on the order for drive cups so my mt is still running stock drive cups and bones and is still holding up. That really surprised me... mind you I have them mounted in the front which don't take the beating the rear does. Running an 15/47 gear ratio this thing is insane.

MC

Yes there is a lot of difference between the RTR and SS!

I sure as heck cannot get much out of HPI on this form like they said they would or either they just do not know! I guess after being a loyal HPI costumer for years it is time to change brands. They sure are not checking this form or replying to it very well!!!!!!!!!!!!!!!!!!!!

If you notice HPI Staff only has 22 post on this form so what does this say?

Also too when HPI had the forums on their website the staff wasn't too quick to respond to posts there either.

maybe i should work for hpi,i would gladely get paid to answer questions