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Old 10-02-2007, 08:28 AM   #1
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Default Need advice on choosing engine

My choices are: XTM457, LOSI 427. Any knowledge on which engine is actually longer lasting? Easier to tune? Most Power? I realize lots of variables can affect durability, as well as power, but for the most part, does either engine have an advantage over the other? It will be in a MBX5T.
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Old 10-02-2007, 08:37 AM   #2
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The only engine I have had any experience with in your list is the XTM.

I put over 7 gallons on mine when I finally got rid of it. It is a GREAT engine for the money!
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Old 10-02-2007, 08:39 AM   #3
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i've heard good things about XTM engines too. nothing first hand though.
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Old 10-02-2007, 09:13 AM   #4
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Those two engines are from the same family of SH engines. They are great engines. I have put 11 gallons on my Mach. A friend of mine has the 457 cause he found it on sale. I think he paid 125 so he thought he'd give it a try. He was very pleased. I was impressed. It has PLENTY of power. If you are considering these two engines you won't be disappointed. Don't know what you expect from an engine of this caliber though. Since my Mach has so much run time, it has become a back up, just in case something happens to my race engines. But also for practice I put this in my truggy for testing. I was happy with the tuning. It was easy for a noob like me.
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Old 10-02-2007, 01:38 PM   #5
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We run the Mach/Losi 427 in our Truggy at the shop. It runs so well we never broke in the race motor we had for it. It will pull a gear like no bodys business and gets 10+ minutes of run time. Smoking engine.

Not sure about the XTM but I think if it is made by the same outfit then it will be very good.
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Old 10-02-2007, 06:18 PM   #6
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the losi 427 engine is a good engine, but in that price range there is something even better...take a long hard look into the go tech .25 and you will be much happier...
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Old 10-02-2007, 06:38 PM   #7
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I don't know anything about either one but I know that a V-Spec will beat both of them
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Old 10-02-2007, 06:42 PM   #8
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Quote:
Originally Posted by kcpipeliner View Post
I don't know anything about either one but I know that a V-Spec will beat both of them
If you know nothing about either then how can you possibly make that statement?
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Old 10-02-2007, 10:44 PM   #9
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Quote:
Originally Posted by kcpipeliner View Post
I don't know anything about either one but I know that a V-Spec will beat both of them
Until the bearings seize
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Old 10-02-2007, 11:31 PM   #10
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my neighbors picked up 8s rtrs. the Losi 427 is quite a ripping motor. start and run pretty good. Fuel economy seems low though, but strong runners none the less. and at 150.00 cheap
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Old 10-03-2007, 11:50 AM   #11
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Quote:
Originally Posted by Timmahh View Post
my neighbors picked up 8s rtrs. the Losi 427 is quite a ripping motor. start and run pretty good. Fuel economy seems low though, but strong runners none the less. and at 150.00 cheap
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Old 10-03-2007, 12:09 PM   #12
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I've ran both and I can definitely say that the 427 is made better than the 457. Not to mention longer lasting and easier to tune. Go for the 427.
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Old 10-03-2007, 01:06 PM   #13
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Thanks for the help. I decided to go with the 427, would the jp3 be a good pipe? I have heard it cuts the top end quite a bit compared to the jp2, anyone ever run both? Or is there a better pipe to go with the 427?
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