Trinity EXTECH .21
04-26-2010 | 09:40 AM
#2056
Tech Adept
Joined: Jan 2009
Posts: 124
That is about the same info that I have recieved as well. I would think that it wouldn't be too long before they start showing up around amain and so forth. I do know that the fully modded .21 that I have has all the STI parts on the inside with the block and sleeve modifications done. other than that I have not see the newer versions at this time.
04-26-2010 | 11:27 AM
#2057
According to the press relese I got fron Trinity (Team Epic) the current lines of Ex-Tech and Sirio motors have been dropped. The new line of motors look to have the same block as the Ex-Tech 2's, the heads look to be the same as the Ex-Tech2's but with a new Sirio logo on them and new color. I assume that the head color identifies the type of motor. .12, .21, .24, .27 (for the Traxxas). Not alot of other info was contained in the press relese. When I called Team Epic I was told that the new mills have a new piston, sleeve, and rod. Outside of that the spec's were not known.
So, as to who might still carry the Ex-Tech's? Not many places that I have found. There are a coupl eof places on the flea bay that have new old stock Ex-Tech's and some pipes. Not much found for parts. I hope that the new mills will at least have the same rear baring size as the Ex-Tech's. With some luck, maybe the new parts will work on the old mills in a pinch. Hope that helps for what it's worth.
So, as to who might still carry the Ex-Tech's? Not many places that I have found. There are a coupl eof places on the flea bay that have new old stock Ex-Tech's and some pipes. Not much found for parts. I hope that the new mills will at least have the same rear baring size as the Ex-Tech's. With some luck, maybe the new parts will work on the old mills in a pinch. Hope that helps for what it's worth.
That is about the same info that I have recieved as well. I would think that it wouldn't be too long before they start showing up around amain and so forth. I do know that the fully modded .21 that I have has all the STI parts on the inside with the block and sleeve modifications done. other than that I have not see the newer versions at this time.
04-26-2010 | 12:24 PM
#2058
I will say that the 2013 is a good pipe on small tight tracks for this motor but it doesn't get as good of fuel mileage. the 2056 pipe is what you are going to want with this motor, you get the best of both worlds, good mileage and a good pipe for small and large tracks. one other thing, do not tune the motor to temps, tune to performance, smoke and sound, then check the temp only as a reference point. these motor will run cool. mine in a truggy normally runs between 175 to 205 just depending on the conditions. When I was at the psycho nitro blast I was lucky to see my temp above 170 and it was running like a bat outa hell with good smoke trail. So don't get to caught up on temps.
04-26-2010 | 02:05 PM
#2059
Tech Adept
Joined: Jan 2009
Posts: 124
I am currently running mine and have for the past year with out any problems. they are a lot harder than the 2013, and 2057 that sirio has put out. but yes the 2056 is the big boy pipe. They had a run in the beginning with internal baffles coming loose but have updated since then.
04-26-2010 | 10:00 PM
#2060
I run the Big Boy pipe and haven't had issue either,
I have two of them and one is a first gen one and the other is newer. My first gen was all beat up and the baffels were still good. Lucky I guess. Haven't heard of the stinger braking off, but stands to reason that it could. What I have done on my Big Boy's and 2013 is put some JB weld epoxy puddy around the stinger and under the pipe where the chassis or side guard could hit it. I run my pipes pretty low, so I figured that it would be a good idea to do that. So far, it's holding up and has kept the pipes from looking to beat up.
I have two of them and one is a first gen one and the other is newer. My first gen was all beat up and the baffels were still good. Lucky I guess. Haven't heard of the stinger braking off, but stands to reason that it could. What I have done on my Big Boy's and 2013 is put some JB weld epoxy puddy around the stinger and under the pipe where the chassis or side guard could hit it. I run my pipes pretty low, so I figured that it would be a good idea to do that. So far, it's holding up and has kept the pipes from looking to beat up.
04-29-2010 | 05:47 PM
#2061
Drop idle
I'm running in Tucson.. around 75-80F when I'm racing at night.. I know my idle is set where it needs to be and my low end needle is set well, possibly even a little rich as the motor still doesn't have 2 gallons on it.. I'm running the 2057 as I still haven't found a 2013 or big boy yet.. however when I stop running the engine and let it idle, it has a high idle and then drops to where it should idle.. it will continue to idle for a good bit.. does this mean my low speed needle is a tad too lean? I really don't think I can close my idle screw gap anymore.. let me know what you guys think
04-29-2010 | 06:46 PM
#2062
Tech Adept
Joined: Jan 2009
Posts: 124
Actually it sounds like you are to fat on the bottom and your idle it too high to compensate for the rich bottom. Normal idle gap should be around .5 mil to 1 milliliter. I would lean the bottom 1 hour at a time untill the idle stays up like you are talking about, then lower you idle screw. I normally set my bottom end on the box before I even get on the track. That was the way I was taught from Chad Phillips.
04-29-2010 | 06:55 PM
#2063
Joined: Sep 2001
Posts: 3,042
I concur with Trey. These mills seem to prefer to be tuned from the bottom needle first. Also, in my experience, the P4 is the best plug. Lastly, I'd stick with the 2057 pipeset. It will be a bit softer on bottom, yet pull harder mid to top, offer more top end and mileage than the 13. As for the 56, I've never liked it. It seems ok on bottom, comparable to the 57, insane mid, but feels to me like it chokes the engine down on top. One more pipe I have recently been running my Ex Tech on and it has been awesome with, is the Alpha Plus 0801. It is also built like a tank, kinda like the JP series. I would personally highly recomend trying one out if you've got a friend nearby that'll let ya 
05-07-2010 | 09:08 PM
#2068
Engine
So I got the Big Boy pipe from a user on here.. great pipe and it sounds like a wasp on steroids. I switched it the big boy for a GRP 2053 pipe and I'm wondering how much tuning and difference in performance I should expect.. the big boy pipe is dubbed as an "all around" pipe correct? Thanks guys
05-23-2010 | 12:01 AM
#2069
:(
Thread is dead! I've been running the big boy pipe on my extech .21 and its nice, but I'm still looking for that bottom end. I may try the 2013... I"m running two 1.1 springs and one 1.0 spring in my clutch.. what temps are you guys running at? My engine just hit around 2 gallons and for the first time hit 200.
05-23-2010 | 06:03 AM
#2070
Tech Adept
Joined: Jan 2009
Posts: 124
200 is completely normal for these mills. Mine has a hard time getting over 205 in a truggy. I will tell you that the 2013 will give you a lot of bottom end but you will lose fuel economy. Trust me the 2056 big boy is all you need if tuned right. I run the 2056 big boy on my truggy with the .21 fm, and I have all the bottom end that I need. Just make sure you are not running to fat on the bottom and too lean on the top. that will kill you bottom end.