Coopz

I busted my engine yesterday and am looking at a replacement but I've been throwing a lot of money around the last month on RC so I want to get a cheaper engine. The Mach .28 seems popular (non pull start) for $120. Just wondering if there are any opinons on it? Seems quite popular, especially in buggies.
Also looking at the SH .25 which is $130 and offers slightly better economy than the .28 version (my club has 15 minute finals and doing 1 fuel stop is a lot better than 2...)

ericem

The mach .28 is not a great motor. Oddly the mach .26 is faster. If you want much better performance then the mach .28 look into the sportwerks .26. It is only $117 in your cart. Minus another $5 with this coupon code : CALPJAN85

http://www.amainhobbies.com/product_...oducts_id/7458

madmax22

Axial .28 if you want CRAZY torque and OK top speed..... I like that mach 28 Once my stocker goes im getting a axial or mach

UG0TB4NN3D

My Feedback: (1)

I run the Sportwerks .26. It's exactly the same as the Mach .28 (427) but it has a better carb, which is why it has more power.

ericem

The mach 427 is the exact same motor as the Mach .26 just a tad different carb.

bigairlife

The mach 427 is a better motor. They're pretty fast and produce good torque, they're not very expensive, and they are VERY easy to tune... =-]

muddog

I think they suck .26 .28 if you run them much over 210 degreas they vapor lock. Once you get them running good and they get hot they shut down and won't start again until they cool. To stop that you have to run them pig rich which kills the power. In my opinion xtm racing makes the best cheap engines.

Coopz

Really don't want a pull or spin start though, can't argue the 427's are good motors though.

My track is technical, the main straight is about 50 meters long so top speed is not that important as torque.

DriftProjectR

i say the sportwork .26 or the TTR motors.

muddog

I had the same problem. I ended up going with the Nova Rossi n21b 200$ It's great on the small tracks. After going though a few cheap big boars I put the 24.7 in my mt.

HerrSavage

Yep, word on Losi forums has been for ages, the 427 is much better than the 28..

Best budget engines going IMO are Mach 427 or Sportwerks 26 V2, with part number SWK8057(like 12 bucks at Amain..) Just bolted mine up Saturday.. Now just trying to make the d.amn startbox match with my truck... [:@]

spikeman

I had a mach .28 and I absolutly loved.

ericem

If you want the Sportwerks motor to be a bumpstart motor you need this backplate.

http://www.amainhobbies.com/product_...oducts_id/4331

eirk66

ive owned 2 of them right now i have one in my hyper 8 which is the rtr engine so but there good engines not top of the notch but it gets the job done for the price and all they do like to run a bit hotter ive noticed but ive had a hyper 7 with that engine for close to a year sold it to my brothers little friend and its still goin pretty good and hes not that good of a driver soo.. hes brought it back for me to tune it and stuff but no real problems only thing ever happend was the head got a bit lose took me a while to figure out why wouldnt start but that kind of stuff just happens after a while was just unscrewd a bit sooo id go for it if its cheap

ericem

The OFNA mac .28 in the hyper's are different from a dynamite Mach .28.

slayerphonics

You have no clue what your talking about, go flame somewhere else

Mach 427 is a great motor,

IMO is one of the best stock/rtr motors around

muddog

At the track they seem to have alot of problems flaming out. YOU could say the 427 is a FLAMER.

slayerphonics

So your opinion about the 427 is based on other peoples 427s at your local track?

muddog

I have had bad experiences with Dynamite engines (mach .26 and .28). When I saw people having similar problems with the 427 I assumed it was the same.

unluckylonestar

so far i have had 2 mach 427 and they were rockets. but like slayer had his and 7 tanks in rod snapped. would i buy a another mach over and cheaper engine anyday

slayerphonics

yup, agreed unlucky

I even owned a Mach that blew the rod, (I kinda blame myself though)

And I would buy another Mach over another engine the same price

Sorry about busting your balls muddog.. this forum can piss you off,

ericem

I have owned about 5 mach .26's. The mach .26 is the same as the mach 427 has the same piston and sleeve. In my experience they have been very, actually extremely durable motors. Most of them lasted 8+ gallons. One lasted 11 gallons! Then I sold it. Funny thing is that motor that lasted 11 gallons got sand in it during the first 1/2 gallon when my air filter fell off.

Now I have another mach 427 and it had about a gallon on it. I added a few tanks 3rd or 4th tank, the pin slid out of the piston because the clip either broke or was missing and it stratched up the sleeve pretty good. I just buffed out the dent in the sleeve and the piston. Then put it all together this time with a clip holding the pin in place and she fired like normal and ran fine! Now it has 4+gallons on it and it still has just as much compression. I really love my mach's never had one fail one me. If you swap the carb they can make some really good power as well.

trugman

I've had two 427 .The only bad thing about the 427 is the main bearing.It's extremely weak.

madmax22

im thinking a 427 for my next motor once my stock TTR pro .28 goes out (should not be anythime soon) so I think im going w/ the mach

ericem

I definitely have to agree pretty much every mach I have looked at had a loose rear bearing. Yet they still went pretty far with a loose bearing.