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Old 11-16-2005, 01:38 AM   #2116
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Default Engine for my MTX-4

Hi Racers,

Am currently looking around to get an Engine to put in this amazing car.

Would like to know between a JP 12 FX-R03 and JP 12 FX-R05, which has a better performance according to powerband and also runtime ?

Thanks on advance ! (Other engine opinions are also welcome !)

Happy Racing !
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Old 11-16-2005, 01:47 AM   #2117
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If its out of those 2 go for the FX-R03 it will have longer run time due to having 3 ports not 5 like the R05 and Id think it would last longer as well and its a legal engine in my country im not sure what the rules are at your club. by the sounds of it your not new to these engines I run a Novarossi RR12L3 which ive found really good so far it keeps up with all the JP powered cars at my club but there is a new version of this engine called Novarossi N12LL3 which has 4 grooves in the piston instead of 2 for extra lubrication and engine life. The JP's are modified and as some people ive heard say that JP's are ticking time bombs but haven't had one yet.

Chris
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Old 11-16-2005, 02:11 AM   #2118
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Hi,

the mugen shocks are really great. we use it with 400 oil. i have used the penispump but it is not really necessary.

and it seems that you dont have to change the springs. you can handle more with oil.

Last edited by jaykay; 11-16-2005 at 04:56 AM.
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Old 11-16-2005, 02:11 AM   #2119
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The JP .12 engines are Fx T03 and Fx T05, the R's are .21 engines, unless they are the new prototype engines that are running around the world.
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Old 11-16-2005, 03:38 AM   #2120
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Default Engine for my MTX-4

Quote:
Originally Posted by Chris West
If its out of those 2 go for the FX-R03 it will have longer run time due to having 3 ports not 5 like the R05 and Id think it would last longer as well and its a legal engine in my country im not sure what the rules are at your club. by the sounds of it your not new to these engines I run a Novarossi RR12L3 which ive found really good so far it keeps up with all the JP powered cars at my club but there is a new version of this engine called Novarossi N12LL3 which has 4 grooves in the piston instead of 2 for extra lubrication and engine life. The JP's are modified and as some people ive heard say that JP's are ticking time bombs but haven't had one yet.

Chris
Hi Chris, Jez, Thanks !

Oops, i made a mistake, it's FX12-T03 and FX12-T05. In my country, we're not limited to 3 ports or no rules on outlaw items currently.

Hi Chris, is your Nova RR12L3 a modified or tuned version ? One of my LHS guys used a N12LL3 Tuned and it was ballasticly fast !

By the way, what do you mean by ticking time bombs ? Explosively fast like a bomb or has a short life span ? Thanks...

I haven't tried a JP yet... thought of getting one cause the MTX4 handles so well and can handle and throttle through crazy racing lines that i thought of putting a JP into this baby ! I'm using a NovaMax modified right now...

Happy Racing !
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Old 11-16-2005, 06:45 AM   #2121
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Thanks slotmachine for the advice regarding my shock collar. just did that and it works man.
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Old 11-16-2005, 09:39 AM   #2122
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mugenīs 600 shock oil is similar to what weight? 40-50, i do have access only to associated or losi shock oil!
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Old 11-16-2005, 10:05 AM   #2123
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associated 60wt is similar to mugen #600. losi is generally softer than associated. whatever you use, try to stick to one brand for consistency.
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Old 11-16-2005, 10:18 AM   #2124
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Quote:
Originally Posted by jaykay
Hi,

the mugen shocks are really great. we use it with 400 oil. i have used the penispump but it is not really necessary.

and it seems that you dont have to change the springs. you can handle more with oil.
Hahaha...... lets call it air remover pump
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Old 11-16-2005, 10:21 AM   #2125
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Quote:
Originally Posted by asw7576
My LHS said MTX4 and MRX4 share the same shock absorbers except the springs.

The new absorber are very good design and quality, as good as Tamiya Shocks
So when can I see your MTX4 kissing asphalt? Next Super Touring race?
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Old 11-16-2005, 10:54 AM   #2126
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Quote:
Originally Posted by daniz24
So when can I see your MTX4 kissing asphalt? Next Super Touring race?
Hehehe...... maybe next year. At the moment I want to relax and enjoy life with my children. ....... I'm tired having lots of car to maintain.
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Old 11-16-2005, 11:13 AM   #2127
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Quote:
Originally Posted by ogreasurada
I wonder how are the Mugen shocks compared to the Serpent RCC shocks?
Of course Mugen.
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Old 11-16-2005, 11:19 AM   #2128
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Quote:
Originally Posted by stefan
I just converted my XRay to Mugen shocks because I was fed up with them leaking all the time.

IMHO, the Mugen shocks are the best on the market.

No Voodoo necessary to build equal and non-leaking shocks.

Yes, the adjustable Pistons of the S-shocks sound very convenient, but seriously, how often do we change oil on our Mugen shocks?

I usually always run 600 wt except one tight and bumpy track, where I run 450.
Due to the easy nature of the M-shocks, changing the oil once every while is a breeze.

Btw, the new RPP shocks from S have standard pistons.
I know the traditional Serpent shocks are lots of trouble to rebuild.
But I'm asking about Serpent's new RCC shocks ( ) compared to the Mugen ones. Any idea? thx
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Old 11-16-2005, 11:34 AM   #2129
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Quote:
Originally Posted by ogreasurada
I know the traditional Serpent shocks are lots of trouble to rebuild.
But I'm asking about Serpent's new RCC shocks ( ) compared to the Mugen ones. Any idea? thx
New Mugen and Tamiya have 2 silicone rings and 1 plastic guide at lower part.

Older Mugen Shock, Yokomo, Xray only have 1 silicone ring and 1 plastic guide.

Having 2 silicone rings means less oil leaking and keep the dirt out.
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Old 11-16-2005, 01:16 PM   #2130
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Quote:
Originally Posted by typer
Thanks slotmachine for the advice regarding my shock collar. just did that and it works man.
Your welcome! That's the way you keep the car neutral left to right, everything will work better the closer the collars are.
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