LRP ZR.28 Spec. 4 Nitro Engine w/Pull Start

GREAT ENGINE GOOD POWER AND RPM. BREAKS IN AND TUNES GOOD. I'M RUNNING THIS ENGINE. IN MY 1/8 SCALE KYOSHO GT2 AUDI SPORT BODY. RUNS NICE.

Very good product and arrived on time. Have always had good service with AMain Hobbies. Would recommend them to anyone. P

Great engine has lots of power. The only downside is the pullstart, it broke on the 4th start but other than that no complaints.

I am 60yrs old now. Been in this hobby for 42yrs. Bought this engine and installed in my Revo.
Tried to get running for 3 days trying everything I knew to do.
Bottom line I found out "ALOT" of people having the same issue and ALL of them was complaining about the Carburetor!!
I called Amain Hobby and explained my issue.
THANK YOU Amain Hobby as they sent me a "NEW" Carburetor that comes on the LRP .32
WOW..My Engine Started right up and idled for the first time since I purchased.
"THANK YOU" AMAIN HOBBY FOR TAKING CARE OF ME!

Great engine, crappy carb. There are a plethora of online forums and videos with people complaining about the XTEC carbs. There’s a reason - they’re horrible. They won’t get you at a good tune. It seems wild that it is still sold, but it’s true. The cheapest fix is a Hobao E30020 carb at $40 from Hobao USA. Next thing I’d try is Protek’s PTK-2617 carb at $120. The protek venturis fit in the Hobao carb too, so you can use them. Note the Hobao comes with a 7mm carb stock. Most Novarossi carbs fit too but Novarossi is out of business. The engine runs well with a good carb - idles fairly, revs well, has torque, runs cool. As always, make sure you preheat the engine before every run. I’m running this in my custom nitro Tekno MT410 build and it’s a great fit. My engine had no loose flashing or anything on its internals upon unboxing. Would buy again. Just with the Hobao or Protek carb.

So you heard $160 and think it’s not like the best engine or thing/ item you could buy ever! Roto start back plate with the bit and a nice drill! They idle like advertised! And ripppppp! Tons of torque! Ride it out past break in, it will be sluggish for the first 8 tanks. Not too sluggish, but man is it ever a no brainer. Tons of compression and a nice exhaust tone!

Great engine. Super easy to tune, very powerful. Highly recommend.

Immediately locked up on first tank idling during breaking in. By the time I got around to using it return window is ckosed

Question, ¿does anyone know if this engine will fit in the traxxas revo whit de big block instalation kit? it requires mayor modification or fits directly?

This is a nice looking very well-made Engine, man it looks slick, has crazy compression, and should scream. Can't wait to get the Zr .32 spec 4.1

Flawless in my Ofna DM-One! Absolutely killer motor. First gallon down and ripping good! I see where people say tuning is a little bleh, but its something I can overcome as I’ve been running nitro cars for 10+ years. I’ll 100% buy another, no questions asked.

I installed this .28 LRP in a 1/8 scale Serpent cobra GT on road touring car ,using a Dynamite tune pipe-been running TNR 20% and geared it low -I’m blown away how well this engine performs with 103 mm wheels - engine has its own sound , carb tuning is basic and mid range power is spot on -bought a .Lrp 21 but it’s still in the box …super happy with this engine - Note: I
Did loose the pull starter and converted it to bump start from day one….