Team_Orange

iTrader: (20)

So I was looking at the new xzb v2 and the piston rod and sleeve shares the same part number as the speed spec 2. So is there a new speed motor coming out?

dafoets

dear all, sorry if i double post. i already have os spec 1 engine, and i want to replace the piston - conrod - sleeve. and its my question, can i replace it with the os spec 2 part, because my LHS only have parts for os spec 2.

thank for the help

Frank L

iTrader: (148)

XZ speed and Spec II speed P/S do not interchange

Jaz240

iTrader: (52)

Con rod is also different. Although I have both side by side here at the shop and I cannot visually see any difference other than maybe the oil duct is about 1mm longer for the spec 2. I have not measured any of the bushing sizes though but laying one on top of the other they appear identical.

bigjayjay1

iTrader: (86)

Hum I wonder where you learned that

ali_g

iTrader: (7)

anyone compared the performance difference between OS 21 XZ B Ver 1 and Ver 2?

dafoets

So now I must buy the spec II engine ? Hehehe, maybe I will think twice before I buy it, because I'm a min budget racer hehehe.
By the way, thank you all for the info.

Frank L

iTrader: (148)

I have mud on my face

am

Spec II has a shorter conrod and the piston sits lower in the sleeve. If you use the Spec II setup in your old speed you will damage your piston becasue the backplate is new. Piston will heat the backplate.... So, be my guest and try...

noddy2

iTrader: (1)

dafoets , if you want to revive youre spec 1 cheaper !
BO2 ninja piston rod and sleve is a direct fit ,same as XZB (non speed) PSR.
LRP ZZ.21C is same as XZB Speed 1----

Motorman007

iTrader: (89)

Is the OS made motor?


ZR.21X Spec 2 High Competition Off-road Engine
http://www.stormerhobbies.com/cgi-bi...cs&pn=LRP32111


amain
LRP ZR.21X Spec 2 7+1 Port Off-Road Competition Buggy Engine
[LRP32111]
http://www.amain.com/product_info.ph...n-Buggy-Engine

Found it

Picco micromotori from Italie

Picco.

noddy2

iTrader: (1)

---these are not OS made, ie 7 ports
the LRP ZZ.21C is os made ,3 ports,same as gen 1 speed !

Frank L

iTrader: (148)

I was just looking at the "under the hood" pics on neobuggy and Tessman was running the XZ speed not the Spec II or at least the head...
Wonder why...

minty

He was running the 19 speed engine

nitroexpress

I was also looking at the "under the hood" pics on neobuggy of Tessman's vehicle. In one pic of the engine, the HSN sure looks cranked down lean. Is this normal?

I believe this is the right pic for Tessman.