Description
The LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine the next step in engines for monster truck bashers. This engine features an updated piston and connecting rod design, a competition-specific turbo combustion chamber with appropriate plugs and improved timing. These changes have allowed for increased mid range performance. The thermally decoupled 3-needle carburetor allows for fine tuning of the fuel/air mixture. All of these features come together giving you an engine with torque you can barely handle.
Features:
- Big Block size – You cannot replace displacement with anything… but even more displacement!
- CoolDownMax cylinder head provides improved cooling through updated cooling fin arrangement
- Fits all major .21 engine mounts
- 7 + 1 Ports
- Extra reinforced connecting rod
- XTEC T6 engine housing
- XTEC PowerCarb4 thermal protected 15S-3 needle Carburetor
- 9.0, 8.5 and 7.5mm venturi inserts included (9.0mm installed)
Specifications:Displacement:.32 (5.24cc)Bore:19.80mmStroke:17.00mmPower:4.69 HPRPM:35.300 RPMPorting:7 + 1 (7 x transfer-, 1 x exhaust-port)Glow Plug:Super Hot, Turbo style, LRP Turbo WT4 (LRP35145 – included)Carburetor:XTEC thermal protected PowerCarb4 15S-3 needle Carb., 9.0, 8.5 and 7.5mm venturi inserts includedWeight:350gClass:1/8th Offroad Monster Trucks and Truggys
Includes:
- (1) LRP ZR.32X .32 Spec 4.1 Nitro Engine
- (1) Engine Collet
- (3) Carburetor Venturis
This product was added to our catalog on February 3, 2022
Kyle Gravelle Sunday, Jul 23 2023 (about 2 years ago) LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine Have about 2 gallons through it and so far it’s excellent. I’m running an OS carb in it so can’t comment on the stock carb other than it looks decent and is probably alright. There are 3 shims on the head (2 thick ones and 1 thin one). I took a risk and removed both the thick ones and it’s a COMPLETELY different engine now. SO much better. Much more power, better fuel economy, better throttle response, holds tune better. It’s been totally fine like this on 33% nitro with a P3 plug in warm weather. Took the head off, no signs of detonation. Temps are always in the low 200’s. Try it. Also break in was very easy, wasn’t super tight from the factory. Compression is excellent now 4 customers found this review helpful. Bobby Sledge Verified Owner Wednesday, Mar 2 2022 (about 3 years ago) LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine Good motor. If your bashing and want a step up from the rtr dynamite .28 that comes in the 8t rtr or any rtr for that matter, this is great choice. Break in went great and its only going to get faster as it runs in. Could only imgaine what it could do after being modded what the right setup…. 1 customer found this review helpful. Kenneth Burgraff Verified Owner Wednesday, Aug 27 2025 (5 weeks ago) LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine i had an issue with mine. The five-star rating is for the service and speed it was dealt with. I will always buy my parts here . Ryan Lindsay Verified Owner Thursday, Feb 15 2024 (about a year ago) LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine Great as always Great transaction Great motor massive power Andries Buskens Verified Owner Tuesday, Jun 6 2023 (about 2 years ago) LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine LRPs a go to!!! Break ins a tad bit slow, it actually needs to break in past your 4-5 tanks but will rip! You just don’t get full power yet!! Love my .32s and .28s! Go pull start! Alfonso Gonzalez Verified Owner Wednesday, Sep 21 2022 (about 3 years ago) LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine Amazing engine! It does come extremely tight because the engine is huge, and the break in process took a while and was a bit of a pain but now that its all broken in, it’s faster than ever and more powerful than ever on 30% nitro! Benito Vega Verified Owner Monday, May 9 2022 (about 3 years ago) LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine The engine was not what I had expected someone new way before and just ran with it poorly manufactured that’s the last dollar I ever spend on lrp 224.$ and now they are selling it for 159.$ 4 days after I bought it bad business 1 of 13 customers found this review helpful. View all reviews
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