Good or bad idea breaking in my new trx 3.3 on Byron race gen2 40% nitro fuel
i live in Colorado and the altitude is above 8200 '
'I followed the traxxas disc but it says to use traxxas top,fuel
so I don't know if I should proceed with my fuel or get the traxxas kind
that is where all of you come in I need your expertise
thank you
much appreciate it

Its just marketing bullcrap. Use whatever fuel you want.

use any fuel,,, is not going to last anyway. (unless you spend another $100+++ on rod and bearings)
sad but true.

TRX 3.3's last just fine. I think almost all rod failures in the TRX engines are due to operator error. I've ran several TRX engines over the years, including 3 3.3's and not one of them has thrown a rod or bearings. One of them has over 6 gallons on the factory bearings, conrod, piston and liner, and pull starter even.

40% nitro is a bit much for how the 3.3 is shimmed - you'd want another head shim or two for it to last on that much nitro even at the high elevation. If that is all you have access to, keep it a little richer and let 'er buck. Get it running, get it hot, and run it. If you baby it, run it sloppy rich, and follow Traxxas's break-in 'suggestions', you will likely encounter a rod failure.

Just my opinion.

3.3 rod failures is nothing new... just because you were lucky with your 3.3s doesn't mean that the problem doesn't exist.
theres a reason why 1 or 2 companies are selling aftermarket rods.
sorry but 100sss of split rods arent user errors.

True that there have been a lot of cases of TRX rods failing... BUT there are a lot of idiots running these engines. I seriously doubt Traxxas would continue to sell these engines if there was a serious quality problem. Besides, the 3.3 and 2.5 use the same rod. How come i never see any 2.5's with split rods? Sorry, still not buying it.

Oh, and aftermarket parts exist because people buy them. Just because they sell it doesn't mean you need it. Example: anything Integy.

well., I guess after 25 years playing with nitro I'm also one of those idiots lol.
3 split rods... 2 tmaxx, 1 revo.





why not? they keep selling the tmaxx. I guess those same idiots keep buying it?









thats part of the whole issue, the rod can't handle the stress of the 3.3, and it can not handle WOT runs for log periods of time.







you don't have to, is your personal opinion.
Just google search (trx 3.3 rod failure, or 3.3 fail)






we are talking about a rod... not just any other part.

I can agree to disagree. Still friends?

(I seriously doubt Traxxas would continue to sell these engines if there was a serious quality problem)

well they still sell other parts that are faulty or a bad design.

My first Traxxas product (and last) was a Jato 2.5
Broke the rod during break in.

What is all about shimming is that necessary I do have a few shim should I put them on