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RE: OFFICAL NITRO 4-TEC THREAD - 1/29/2008 3:08:55 AM   
devo208


 

Posts: 172
Joined: 10/2/2006
From: philadelphia, PA, USA
Status: offline 		I got a 4-tec 2.5 off a buddy about 1 year ago and it has hop up front and rear bogdones and i cant seem to find them anywhere. I broke one and cant find them. Can anyone help me

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(in reply to ferrarimk13)
       Post #: 201

RE: OFFICAL NITRO 4-TEC THREAD - 1/29/2008 4:50:04 AM   
RRFireblade


 

Posts: 2
Joined: 1/29/2008
From: Orlando, FL, USA
Status: offline 		'Cuda 3.3




(in reply to devo208)
       Post #: 202

RE: OFFICAL NITRO 4-TEC THREAD - 1/29/2008 11:30:52 PM   
devo208


 

Posts: 172
Joined: 10/2/2006
From: philadelphia, PA, USA
Status: offline 		i got that cuba on my rs4

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(in reply to RRFireblade)
       Post #: 203

RE: OFFICAL NITRO 4-TEC THREAD - 1/30/2008 12:25:41 PM   
RRFireblade


 

Posts: 2
Joined: 1/29/2008
From: Orlando, FL, USA
Status: offline 		Thier almost twins only I'm running 31s in the rear to fill up those wells and it's hard to tell in those pics but I did the blacked out hood.

Pretty cool tho , nice.

(in reply to devo208)
       Post #: 204

RE: OFFICAL NITRO 4-TEC THREAD - 2/4/2008 4:56:26 AM   
RACE 1


 

Posts: 18
Joined: 10/28/2005
From: Caledonia, MA, USA
Status: offline 		Can anyone tell me who carries the carbon fiber upgrades for the chassis? i tried to buy all of these pieces the other day and was told that some are no longer made. Any help would be appreciated.

I have been playing with my 2.5 on my dyno with the stock engine and have seen 45 in first gear w/ 20% Traxxas fuel and modest tune. I have the optional gear set coming and should be able to run it later this week. I have an OS .18 CV-R going in after I get a good baseline. I have an idea on pipe but will start with the stock piece.

I know numbers are subjective but this does help set shift points and tuning. I have the sway bars and shocks installed but waiting for the snow to melt and finish dyo work. i will try to post any results I get.

Look forward to hearing back on the carbon chassis pieces.

(in reply to RRFireblade)
       Post #: 205

RE: OFFICAL NITRO 4-TEC THREAD - 2/4/2008 8:03:16 PM   
thelonerangers


 

Posts: 27
Joined: 4/5/2007
From: Massapequa Park, NY, USA
Status: offline 		hey race 1, what are you using for a dyno?

(in reply to RACE 1)
       Post #: 206

RE: OFFICAL NITRO 4-TEC THREAD - 2/5/2008 2:24:50 AM   
RACE 1


 

Posts: 18
Joined: 10/28/2005
From: Caledonia, MA, USA
Status: offline 		I have a RC DYNO SYSTEMS unit, I have had it for a couple of years. It works really well and have run quite a few cars acrossed it as well as a couple of revo's. The REVO is a bit wide for the belt but still gives good information. This unit is better suited for most on and off- road cars, trucks and buggies up to 1/8. The monsters are too big for it because of the wide track and some lengths.

I have been running it in our dyno cells at ILMOR Engineering here in Michigan. We supply the IRL with 98% of the engines run in the series so most of the guys i work with think this is a pretty cool toy.

I got bit by the R/C bug a few years back and have really gotten into it. I am more interested in these little engines over the big stuff we work on. I think it is amazing how much power can be produced. I do want to buy an engine dyno but for now this works really well. The biggest area i have been able to help some people is on the tuning. I have talked with a couple of hobby stores about offering a service to help people and they seem interested, the problem is arriving at a price that is reasonable for a person to pay for this service. Also, i would be able to help a store show customers what a specific product will do for them. Imagine if you could go into your local hobby store and they could produce verified info on a pipe, engine or fuel that you want based on your use. chances are you would not have to spend a bunch of money doing the trial and error method.

I will be putting the .18 os in soon and then want to put a .21 small block in it. As you know gearing selection is limited so my shift point will be important. I have not been able to find out much on pipes so this will be another area where i can modify the powerband. Fuel,glowplug and oil content will be looked at.

(in reply to thelonerangers)
       Post #: 207

RE: OFFICAL NITRO 4-TEC THREAD - 2/11/2008 12:27:30 AM   
BEARBYSR



Posts: 881
Joined: 1/27/2007
From: WARMINSTER, PA, USA
Status: offline 		Hello, a friend of mine gave me an old 4-tec that his son used to race, he figures it to be about 8-10 years old. I thought it might be a cool project to rebuild it and get it runnin again.I race nitro and electric Duratrax buggies and stadium trucks but never owned a traxxas car. This would be totally new territory for me since I have never driven a nitro street car before. Anyway, I posted a few pics below to see if anybody could tell me what year car I have. All I got with it is what you see in the pics. I wanted some advice as to if this is a doable project or if it's just to old to bother with. Any feedback would be great(possitve or other). Can I still get parts for it or is it simular to the newer ones? So far I think it needs alot such as front shock towers, wheels, tires,shocks, and a new updated motor, also a transmitter and reciever. Thanks in advance for any input.

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< Message edited by BEARBYSR -- 2/11/2008 12:29:21 AM >

_____________________________

O.S. POWERED DTX NITRO EVADER/ DTX RAZE/MGT/EVADER EVST

(in reply to RACE 1)
       Post #: 208

RE: OFFICAL NITRO 4-TEC THREAD - 2/11/2008 10:41:09 AM   
dave24464


 

Posts: 1
Joined: 2/11/2008
From: basingstoke, UNITED KINGDOM
Status: offline 		hello all can some one till me where i can get the set up for a cen tr4 as i have no book for it got it of ebay £50.00 and it is a two gear box cen16 will not run right start then not start help me

(in reply to losixxx-nt)
       Post #: 209

RE: OFFICAL NITRO 4-TEC THREAD - 2/13/2008 1:12:29 AM   
RACE 1


 

Posts: 18
Joined: 10/28/2005
From: Caledonia, MA, USA
Status: offline 		BEARBYSR, I am not sure what year that is. By the sound of the list of upgrades and parts you could probably find a newer car on ebay for less than the repairs. i have seen 3.3's on there for 325 to 400 new in the box and that is RTR.

Sorry not much more help than that. I picked mine up for 150 from a friend at work with spares.

(in reply to BEARBYSR)
       Post #: 210

RE: OFFICAL NITRO 4-TEC THREAD - 2/13/2008 1:44:45 AM   
RACE 1


 

Posts: 18
Joined: 10/28/2005
From: Caledonia, MA, USA
Status: offline 		hi all. i was finally able to get my optional two speed gears installed and run on the dyno. overall it was a good purchase. i am still playing with the shift point to get the most velocity before nosing over on power and hitting second gear.

Earlier this evning my best run was 60mph. I am not sure how fast the stock 4 yearold 2.5 should go but this is faster than the 51mph i had previously seen testing with the stock gearing. I can also say that there might be alittle bit more in it with a little later shift tune. I started to adjust the shift point and the screen on my computer crapped out. I feel i am close on the tune but it will change again with the weather. i am still running 20% traxxas with the stock glow plug.

the .18 will be going in next. I will continue to use the the 20% testing.

I'll post some of the results in the next couple of days. i have alot to go through.

(in reply to RACE 1)
       Post #: 211

RE: OFFICAL NITRO 4-TEC THREAD - 2/14/2008 12:58:32 PM   
BEARBYSR



Posts: 881
Joined: 1/27/2007
From: WARMINSTER, PA, USA
Status: offline
quote:

BEARBYSR, I am not sure what year that is. By the sound of the list of upgrades and parts you could probably find a newer car on ebay for less than the repairs. i have seen 3.3's on there for 325 to 400 new in the box and that is RTR.

Sorry not much more help than that. I picked mine up for 150 from a friend at work with spares.


Yeah, that's what I was thinkin, if I add up the cost of everything, I could probably buy a much newer one off e-bay or somethin for not much more. I am just curious how close it is to the newer ones. I will have to research into it some more and see what I find. It would be a shame to scrap it out because what is on it is in pretty good condition. Thanks for the help RACE 1.

_____________________________

O.S. POWERED DTX NITRO EVADER/ DTX RAZE/MGT/EVADER EVST

(in reply to RACE 1)
       Post #: 212

RE: OFFICAL NITRO 4-TEC THREAD - 2/25/2008 12:55:18 AM   
Dakota_2878



Posts: 29
Joined: 12/22/2007
From: cheyenne, WY, USA
Status: offline 		Hey BEARBYSR

I'm not sure what year yours is but it does look to be built aboout the same as the New 4tec i have. Most of the chassis pieces should be the same.

What is wrong with yours?

Dakota

(in reply to BEARBYSR)
       Post #: 213

RE: OFFICAL NITRO 4-TEC THREAD - 3/1/2008 4:13:32 AM   
rcmaniac84


 

Posts: 3
Joined: 2/28/2008
From: commack, NY, USA
Status: offline 		Hey, i just got a 4 tec and i love it. but im not an expert driver, so i cant keep it to streight. What whould the best things that i could do to it to make it handle much better? Like what Wheels and are sway bars any good, thanks!!

(in reply to Dakota_2878)
 &nb