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Old 12-19-2004, 01:03 PM   #7381
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Default Help please!

Hey guys, here is the deal. I just came up on a NTC3 w/ a Sirio .12, and has "the fix" on both ends. It has been raced at total of 10 races and is in good condition. But I am a new nitro owner and dont know anything about the Sirio .12 engine, and am not too familiar with the car. Do you guys suggest I do a full rebuild to check all the parts for wear and tear? What would you do if you were in my shoes? Keep in mind im trying to get the car ready for nitro racing this spring. Get back at me, Thanks!
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Old 12-19-2004, 01:21 PM   #7382
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Yes do a tear down while you inspect the parts. Clean them with denatured alcohol with a little concentrated simple green mixed in. Don't get the diluted one but the concetrate. Soak the bearings in WD40 overnight and replace the bad bearings. After 10 races, some bearings will probably be bad. I'd get some Ceramic Bearings from Acer Racing. As for the Sirio, they're known to have weak con rods. You may want to tear the engine down and inspect the sleeve, piston and conrod. If the pistion is still in great shape, I'd get the sleeve pinched. I'd also replace the conrod to be safe. Sirio's rev high so a conrod a great investment. If it's the old rear suspension, you may want to upgrade to version two. Check for tweaked chassis also. Good luck in spring.
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Old 12-19-2004, 02:05 PM   #7383
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Quote:
Originally posted by revzalot
Yes do a tear down while you inspect the parts. Clean them with denatured alcohol with a little concentrated simple green mixed in. Don't get the diluted one but the concetrate. Soak the bearings in WD40 overnight and replace the bad bearings. After 10 races, some bearings will probably be bad. I'd get some Ceramic Bearings from Acer Racing. As for the Sirio, they're known to have weak con rods. You may want to tear the engine down and inspect the sleeve, piston and conrod. If the pistion is still in great shape, I'd get the sleeve pinched. I'd also replace the conrod to be safe. Sirio's rev high so a conrod a great investment. If it's the old rear suspension, you may want to upgrade to version two. Check for tweaked chassis also. Good luck in spring.
What is simple green? and where can I find it? with the WD-40, how do i soak? i thought it was spray only. As far as the engine inspection, i think ill take it out and bring it to my LHS for inspection. I know these questions may sound basic, but like i said, im new to nitro. Thanks
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Old 12-19-2004, 02:14 PM   #7384
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Simple Green is an awesome degreaser that should be easily located in hardware. Put the bearings in a little cup and soak it with WD40 but I would take out the shields before soaking them. I would also polish the pillow balls and hinge pins. Nitro gets a little messy but that's the fun of it.
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Old 12-19-2004, 02:21 PM   #7385
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Sounds good. Should replace the existing screws with aluminum blue team version? As far as the Sirio .12 is concerned, how long is the average engine life?
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Old 12-19-2004, 02:22 PM   #7386
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And during the rebuild, how do i assess clutch wear and damage? What are the advantages of a centax vs the one supplied with the kit? should i just use the kit version or upgrade to the sure shift?
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Old 12-19-2004, 03:07 PM   #7387
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As for screws, I'd get some stainless for high reinforce areas such as swing rack, diff cases, brake, etc. and aluminum/titanium for low reinforced areas such as fuel tank, handle, radio plate, etc. As for the engine, it depends on how much it was used and what percent nitro did the owner run it on. Change the springs in the two speed and shoes. As for the clutch, this is a toss up. I have both the Kfactory and 3 shoe clutch and both work great. I modified the 3 shoe to run on small tight tracks while I'd use the kfactory on large tracks. On large tracks, I found some to be technical while others are sweepers so the Kfactory is great for adjustablility.
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Old 12-19-2004, 03:41 PM   #7388
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where can I purchase K Factory Parts?
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Old 12-19-2004, 08:20 PM   #7389
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You can order K Factory Parts from Brooklyn Hobbies, excellent prices. Here's the link:

Powerline Racing K Factory page
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Old 12-20-2004, 10:12 AM   #7390
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Quote:
Originally posted by ntc3freak
i think it is the shocks.it is hard to rebuild.how do u rebuild bladder shocks?i am not using ae shocks at the moment.


anyone?pleaz help me
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Old 12-20-2004, 12:57 PM   #7391
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fill them with oil, stick the bladder on and then put the cap on.
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Old 12-20-2004, 01:12 PM   #7392
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I did not realize the ae shocks use a bladder. Mine does not use a bladder.
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Old 12-20-2004, 06:08 PM   #7393
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Quote:
Originally posted by sook
I did not realize the ae shocks use a bladder. Mine does not use a bladder.
The AE shocks on the NTC3 dont use a bladder, he`s running different shocks
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Old 12-20-2004, 08:35 PM   #7394
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If interested in the bladder caps for the NTC3 Yokomo makes them. Speed Tech did stock them.
http://64.23.108.110/speedtechrc/174.html
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Old 12-20-2004, 09:30 PM   #7395
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is it good?i knoe that i nedd to fill them,but it is not rebounding.
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