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I just got my .21 Pre-Run from Amain yesterday. Sweet looking engine. I took it apart to inspect just like all the other brand new engines i buy. I took the back plate off. Do you know where the grove is in the side of the motor where the backplate goes into. I saw what I think is a little crack. Im thinking I should send it back to Amain or should I send it to Trinity? Its the new model by the way?
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Originally Posted by cjtamu
(Post 6142349)
It's not possible for them to send you an engine that's "tuned and ready to go" out of the box. Different fuels, different plugs, different pipe, altitude, temp, humidity. All those affect how the engine runs. Hell, you have to retune the same engine when the weather changes. If you got one before that ran without you touching the needles, that was just a stroke of luck. Tune the new one and let it rip.
I was expecting this extech 2 to be dyno tuned, but upon reading the ad it says tuned to be the same as the original prior to breaking in so it will run like a new one but is not tuned to go faster again EB mods dyno tunes it and leaves the carb settings this is how my other 2 eb mods motors were, unfortunately I did not know that eb mods does not do the tuning for extechs anymore I like my engines tuned because I am horrible and too soft on the engines, I keep it a little rich, that is why I will pay for a pretuned one if possible maybe next up will be the massive mods go :eek: |
I think Epic is sending them out set fat due to the fact that tuned in one climate might not be tuned in another.. Its really only to protect the consumer and IMO is very smart. I had an original EB FM Ex-tech and it came the same way as the new sirios running fat. When they break them in they run 500 ml through them and still require some break in. I know it says you can just throw it in the car and go, which you could cause it is ready to go however it still would be wised to run a few more tanks at a fat setting IMO.
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Originally Posted by Chad Phillips
(Post 6141721)
oh pipes and inserts
1) I only run Big boy on a .21 FM with 5.5mm restrictor. i can get 11minutes a tank everytime i run my car. 2) I only run a 2057 on a .24 FM with a 8mm restrictor. Same thing 11 minutes a tank.. both with os p4 glow plugs and 30% platinum fuel. Fuel plays a big part on runtime. |
Has anybody took apart this engine to look inside well i did i found rust on the crank and the rear bearing and also found a crack inside the case right by the bearing i have the pre-run race tuned .21 and im running byron's 30 percent
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Originally Posted by chevydc44
(Post 6169611)
Has anybody took apart this engine to look inside well i did i found rust on the crank and the rear bearing and also found a crack inside the case right by the bearing i have the pre-run race tuned .21 and im running byron's 30 percent
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Originally Posted by vnmsgt
(Post 6169847)
Rust has nothing to do with the motor. Has to do with either where the motor is stored, is it damp or humid, is after run oil used and also the fuel that is being used can cause rust after running and letting the motor sit. I used to have that rust problem with some fuels till I switched to Cold Fusion. I am not one to bash so I will not mention the other fuels. Now the crack I do not know. It may be just a casting mark and not a crack at all. These cases are cast aluminum as far as I know so you do see some stuff like that.
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Originally Posted by chevydc44
(Post 6169975)
And also had oil on the side of the case but there is a crack right by the bearing you can feel it with ur finger i really like the motor i use byron's 30 percent with 11 percent oil so it should have enough lubrication in the motor i will post some pictures of the crack
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Extech 24
I took my Extech fully modded .24 out for its maiden voyage this past weekend at round 4 of the JBRL Series, and WOW!!! I finally found the power I was craving all along for my 8ight-T 2.0! It helped me place 2nd in Sportsman Truggy A-Main. The engine ran flawlessly all weekend long, with awesome power and very respectable run times (9-10min, still running rich). For anyone that feels a .21 doesn't quite offer enough power for your truggy, this is the hot ticket for sure.
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For all of the extec fans. I would personally not used after run oil on this engine. I dont know if it was the brand so I wont mention what I used however its a very common brand name.
I am almost postive this caued the silicone putty to fall out of the crank. I dont think I will ever have it filled and just run it like it is. I have had a few races without it and the engine runs amazing. Just my 2 cents for all of you goin to purchase and run this engine. |
Originally Posted by dishsoap
(Post 6186836)
For all of the extec fans. I would personally not used after run oil on this engine. I dont know if it was the brand so I wont mention what I used however its a very common brand name.
I am almost postive this caued the silicone putty to fall out of the crank. I dont think I will ever have it filled and just run it like it is. I have had a few races without it and the engine runs amazing. Just my 2 cents for all of you goin to purchase and run this engine. |
does any body know if any other carb. fits the the .24. thanks
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If it uses the same carb as the .21 a nova or os carb will work.
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I have a grp carb. on a extech 1 . The 2 should use the same carb. Chad has my 2 at the moment so i can't verify they are the same.
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