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-   -   Sirio engines thread (https://www.rctech.net/forum/offroad-nitro-engine-forum/29456-sirio-engines-thread.html)

itchy b 08-14-2006 01:33 AM


Originally Posted by DaRollaRacer
Hi Itchy,

I had problems making run time at the Great Lakes Challenge because the track was huge. At smaller tracks, I'm not worried at all. I'll get this thing sorted out.

I'll be giving the Novarossi 2630 another try this coming weekend. It'll be at a track similar in size as the GLC.

Hey Robert, would you ever give a 21T second gear pinion a try for the Toledo track?

Dave

the runtime i'm getting is on a huge track too but 1 of the guys there uses your type of pipe and told me that the sti uses more fuel with the new novarossi pipe

M7H 08-14-2006 02:26 AM


Originally Posted by Slo-MTX4
Ok guys i have a bit of a problem atm with my evo3. After a straight it seems run on a bit before it settles back to idle.

Common "problem" with engines in general....

lean out the bottom end, and lower the idle rpm.....

You can try this on the startbox.
When engine goes back from full rpm, listen to it.
If it idles high and after a few seconds goes down in rpm, the bottom end is to rich.
If it idles low, and after a few seconds the rpm goes up, the bottom end is to lean.....

ae_ntc3 08-14-2006 05:36 AM


Originally Posted by DaRollaRacer
Hi Itchy,

I had problems making run time at the Great Lakes Challenge because the track was huge. At smaller tracks, I'm not worried at all.
Dave

what % nitro did you use?
-try backing off the clutch a bit so the engine doesnt rev up as much before it engages.
-use a bit longer fuel line

all of these only give you a few more seconds of runtime but it all adds up!

ziggy12345 08-14-2006 12:31 PM

Just running in my STI! Man thats a long pipe! (the sirio one!)

Cheers

wallyedmonds 08-14-2006 02:48 PM


Originally Posted by M7H
Common "problem" with engines in general....

lean out the bottom end, and lower the idle rpm.....

You can try this on the startbox.
When engine goes back from full rpm, listen to it.
If it idles high and after a few seconds goes down in rpm, the bottom end is to rich.
If it idles low, and after a few seconds the rpm goes up, the bottom end is to lean.....

you would think but this is a sirio.

litespeed-dom 08-14-2006 03:01 PM

I don't know, that seems to have been the common perspective that I can't really agree. Lately the motors we have tuned when it comes in reving bad out of hell, it isn't the bottom too rich, it's actually too lean. Running WAY hot. When we richen the bottom, the temp becomes a lot more controllable.

Dom

Slo-MTX4 08-14-2006 03:22 PM

Yeah i tend to agree with Dom on the bottom being to lean as opposed to too rich. I am hoping that it was just the o'ring that the carb seals into crank case with. For some extra saftey i have put a small amount of ultra blus sealant around the flange. Has anyone else had this problem?

robert maestrey 08-14-2006 03:26 PM


Originally Posted by DaRollaRacer
Hi Itchy,

I had problems making run time at the Great Lakes Challenge because the track was huge. At smaller tracks, I'm not worried at all. I'll get this thing sorted out.

I'll be giving the Novarossi 2630 another try this coming weekend. It'll be at a track similar in size as the GLC.

Hey Robert, would you ever give a 21T second gear pinion a try for the Toledo track?

Dave

No I wouldnt....21 is too small..I wouldnt go smaller than 23 pinion 55 spur maybe 56 .....also guys the spurs you guys are listing above seem to be incorrect. .......1st gear pinions comes in 15,16,17, 2nd pinions 20,21,22,23
1st spur 59,60,61 2nd spur 55,56 these are the only gears im aware of currently shown on the rollout chart for the rrr... remeber guys refer to your rollout chart accordindly to get the correct amount of gear your looking for when cutting your tires to the desired split :nod: :)

robert maestrey 08-14-2006 03:31 PM


Originally Posted by itchy b
the runtime i'm getting is on a huge track too but 1 of the guys there uses your type of pipe and told me that the sti uses more fuel with the new novarossi pipe


You should always verify for yourself......try a bunch of different pipes and see what works best for you....remeber there are alot of factors that make the car run certain way and the pipe is only one of them ;) ;)

itchy b 08-14-2006 10:00 PM


Originally Posted by robert maestrey
You should always verify for yourself......try a bunch of different pipes and see what works best for you....remeber there are alot of factors that make the car run certain way and the pipe is only one of them ;) ;)

yes i agree, i've tried both the sirio pipe and the nova pipe back to back and the novarossi pipe seems to pull harder through the range but i broke the front belt on the car before i could do a runtime comparison :(
then it was time to fix the car and change the motor so i could give it to KICKASS RACING for modding ;)

Tim Johnson 08-15-2006 02:54 PM

Hello all, here is a list of parts that have just hit the USA warehouse:
THESE ARE NEW TO THE USA WAREHOUSE
Code:

S30123111        ROTO START BACK PLATE '05
S30150012        ROTO START ONE WAY BEARING '05
S30084010        ROTO START REAR SHAFT '05
S12012214        S12 EVO 3* STI RACING HEAD
S12041228        S12 EVO 3 STI 3 PORTS "ABC"* PISTON AND LINER
S12070023        S12 EVO 3 STI CONROD
S12111112        S12 EVO 3 STI RACING CRANKCASE
S21041235        PR EVO 2 STI 7 PORTS "AAC" PISTON AND LINER
S21070012        STI "RACING" CONROD
S21081302        PRO STI CRANKSHAFT
S21113203        PR EVO 2 STI CRANKCASE
S21013213        BX STI RACING HEAD
S21070012        STI "RACING" CONROD
S28013201        STI "RACING" HEAD
S28043122        STI 5 PORTS PISTON AND LINER
S28070012        STI "RACING" CONROD
S28083111        STI CRANKSHAFT
S28113101        STI S28 CRANKCASE
S001720006        STD GLOW PLUG S6 
S001720007        STD GLOW PLUG S7

THESE ARE RESTOCK
Code:

S12070022        S12 EVO 3 CONROD
S001720127        "TURBO" GLOW PLUG S7
S12090231        REAR BALL BEARING "RACING"
S12130010        O-RING KIT
S21060000        S21 PISTON PIN RETAINER
S21170001        SHAPED EXHAUST SILICON
S21043224        5+2 PORTS BK EVO2 "ABC" PISTON
S23082000        S23 BACKPLATE SHAFT
S12041211        S12 3 PORTS "ABC"* PISTON AND
S12060012        PISTON PIN RETAINER
S12090021        FRONT BALL BEARING
S21013202        BK EVO2 RACING HEAD
S21050012        S21 "PRO" PISTON PIN
S21090010        S21 FRONT BALL BEARING
S21090220        S21 REAR "RACING" BALL BEARING
S23121101        S23 TX BACKPLATE
S23161040        S23 STD CARBURETTOR ø 9 (CAST
S23200002        S23 STD REVO MANIFOLD
S27070010        "STD" CONROAD
S30084000        ROTO START REAR SHAFT
S12T3ISTI        SIRIO* 2,1 cc EVO 3 3 PORTS SL


Corse-R 08-15-2006 02:57 PM

Sorry... just realized it.

wallyedmonds 08-17-2006 07:39 PM


Originally Posted by HarKonnenD
Hmm so it's all mumbo Jumbo then eh? Well, if this LHS here can get me the parts then Sirio it is. :D :nod: I'm just wondering if it will do great with the Nova CTF #7 plug I've been using.

use sirio plugs and this is not an add they work better in sirio motors my novas i use nova plugs i dono why but they do.

wallyedmonds 08-19-2006 08:21 PM


Originally Posted by wallyedmonds
on a small track try one up on the spurs 54-60 im gona try stock on a big track next week.

and stock works great,runtime was about 6min on a big track so im happy now lol, SIR pipe

wallyedmonds 08-20-2006 05:55 PM

ok now im not happy,the crank broke just like others iv seen,this sucks cuz i did not do anything to make it break,it was runing at 235 and fine with lots of power and smoke so idono.


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