O.S. Engines .18TZ competition rear-exhaust small-block

StevePond · #1 10-17-2004, 02:59 AM

O.S. Engines has just introduced a new, high-perofrmance .18TZ engine that even rivals the performance of the .18TM engines for the T-Maxx and Revo. The new 18TZ includes many of the same features, plus a five-port piston sleeve, a two-piece cylinder head designed for use with a turbo glowplug, and there will be a model available with a pullstart too! A new small-diameter pull-starter allows easy installation of the exhaust system without interference from the starter housing. The new TZ was recently tested on our dyno for RC Nitro Magazine and produced a record 2.28 horsepower and also set a new record for the highest torque from a small-block at 83.1 oz.-in. @ 25,850 rpm.

Fantom 15 gt · #2 10-17-2004, 03:47 AM

Can ya get it in threaded crank?

StevePond · #3 10-17-2004, 03:51 AM

I believe so, but I'll check to be sure.

nitrohead5300 · #4 10-17-2004, 07:05 AM

Drop that baby right in a 1/10 scale touring car and hit warp speed with it!!

Shakedown · #5 10-17-2004, 07:49 AM

That engine would be great for a "Super" sized on-roader. Too bad that class is dead. fun to race and watch. I still have a HPI Super RS4 and a Tamiya TGR collecting dust.

Cotharyus · #6 10-17-2004, 09:04 AM

holy smokes...that looks like an excuse to buy a 1/10th on road and try to set some sort of nutty speed record.

HelicopterPilot · #7 10-17-2004, 05:50 PM

hey will this be a good replacement engine for the revo?

tperkins · #8 10-17-2004, 06:05 PM

It would work, but OS is coming out with a rear-exaust .18 much like this one with a header for the Revo and the case is a direct drop-in. It also accepts pullstarts or EZ start. This would not be a direct drop-in for the Revo, becuase of the fins on the bottom of the case. So taking all that into account, it would be a much better value to get the Revo version.

Viperrgh2 · #9 10-17-2004, 06:27 PM

WOW if only I still had my t-maxx lol.. that engine is sweeta

RCMadMatt · #10 10-17-2004, 07:04 PM

Sweet!! My Nitro TC3 just might have to get one of these bad boys!!

Matt

Kenny1 · #11 10-17-2004, 07:28 PM

That a direct drop it for the Revo?

HelicopterPilot · #12 10-17-2004, 07:30 PM

well it seems the specs on this one are better than the os .18tm

Colt M4 · #13 10-19-2004, 12:37 PM

Hey Steve did you find out if you can get it in the threaded crank version and do you have the prices.

Narse · #14 10-19-2004, 09:08 PM

Could this fit into the XXX-NT??

Colt M4 · #15 10-19-2004, 10:11 PM

That is the truck I would want to fit this motor into. I have a Sport X-NT

atm92484_3 · #16 10-19-2004, 11:08 PM

Quote:

Originally Posted by Kenny1

That a direct drop it for the Revo?

Unless they offer a IPS or a threaded shaft version of this engine, it will not fit the Revo without some clutch refitting. Unlike most of the other cars on the market today (aside from the RC10GT's), the Revo uses a shorter, imperial crankshaft which differs in length and thread size from a regular SG crankshaft (what the 18TZ has). If you want an .18 rear exhaust engine from O.S. for the Revo, the 18TM is a direct drop in.

repete · #17 10-19-2004, 11:28 PM

that would look nice in my TNX

StevePond · #18 10-20-2004, 02:14 PM

Quote:

Originally Posted by Colt M4

Hey Steve did you find out if you can get it in the threaded crank version and do you have the prices.

I do not have the pricing, but a threaded crank version will be available.

Narse - yes, it fits the XXX-NT.

Helicopter Pilot - O.S. says this engine makes about 10 percent more power than the .18 TM.

spenzalii · #19 10-21-2004, 01:30 PM

Let there bee an open class next season. This thing will be in my CD3. If only they could crank out a legal .12 that can hang with the italians. Then again, they may just have one up their sleeve

repete · #20 10-21-2004, 05:16 PM

Quote:

Originally Posted by spenzalii

Let there bee an open class next season. This thing will be in my CD3. If only they could crank out a legal .12 that can hang with the italians. Then again, they may just have one up their sleeve

they do...i cant remember its name..but its a black case..with a silver head...looks mighty sharp..it could be T-spec..but im not sure

Saboteur · #21 10-22-2004, 09:26 AM

Quote:

Originally Posted by Narse

Could this fit into the XXX-NT??

Unless you have a threaded crankshaft.

Now thats a nice engine. Actually makes me want to keep my Sport NT. It would've been nice if my Mugen and RB engine came with more nice markings on the heatsink. I haven't seen many powerful .18 RE's on the market. Glad OS is making one.

Lagwagon · #22 10-22-2004, 10:01 AM

Where can I buy this engine?

OutFrontFrames · #23 10-22-2004, 02:17 PM

We run the side exhaust version in our sprint cars. Its a very tourquey engine. Doesnt seem to pull near the RPM's as most others. If I am correct it has the same crank as the RG .21, and a slightly larger piston than a CVR .15. As well as the same case as the CVR .15.. The sleeve is really thin compared to most other OS sleeves on the market. I want to try this engine really bad. I can't wait till it hits my local hobby shop.

repete · #24 10-22-2004, 03:11 PM

Quote:

Originally Posted by OutFrontFrames

We run the side exhaust version in our sprint cars. Its a very tourquey engine. Doesnt seem to pull near the RPM's as most others. If I am correct it has the same crank as the RG .21, and a slightly larger piston than a CVR .15. As well as the same case as the CVR .15.. The sleeve is really thin compared to most other OS sleeves on the market. I want to try this engine really bad. I can't wait till it hits my local hobby shop.

the side exhaust .18 is the fastest .18 on the market right now...it seemed to pull more rpms than the other .18's in the shootout..recording the highest top speed..and getting there fastest....and it cant have the same case as a .15 cvr..as it is not a rear exhaust engine

StevePond · #25 10-22-2004, 03:17 PM

Neither this or the .18 CV-R have any parts in common with the .21 RG. This TZ engine has nothing in common with any previous engine besides a vauge similarity to the .18TM, which is also brand new.

The CV-R is very capable of revving very high. You should try tuning your pipe a little bit. In the testing I just completed on the .18 engine guide, the CV-R pushed the T-Maxx over 40 mph, which means the engine was clocking about 39,000 rpm. That's screaming when you consider the load of pushing a big T-Maxx. With a moderate load, it could easily run the low 40K range - not that you would want it to, but it's certainly capable.