LRP ZR.32X .32 Spec 4.1 Monster Truck Nitro Engine
About this part
- 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)
Includes:
- (1) LRP ZR.32X .32 Spec 4.1 Nitro Engine
- (1) Engine Collet
- (3) Carburetor Venturis
Reviews4.5 · 8 reviews
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
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....
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 .
Great as always Great transaction Great motor massive power
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!
Reviewers generally rate the LRP ZR.32X .32 Spec 4.1 Monster Truck nitro engine highly, praising its power and performance once broken in. Several describe a tight, slow break-in that needed several tanks before full power arrived. One reviewer reports a substantial gain after removing two of three head shims, with lower temperatures and better throttle response, though this is a single account and involves a modification. One reviewer rated the engine 1/5 over manufacturing quality, noting a price drop shortly after purchase; this is the only negative build-quality report. Another reviewer praised the seller's service in resolving an issue. Most reviews are short and based on early running.
- + Strong power once broken in
- + Good break-in for many owners
- + Responsive throttle after break-in
- + Good seller service
- − Tight, slow break-in
- − Single report of poor manufacturing quality
- − Price dropped soon after purchase