Due to modifications of the already great predecessor, the LRP ZR.28 Spec.4 Pullstart has been significantly improved in the carburettor vernier adjustment as well as in the cooling of the cylinder head. The Heavy-Duty CoolDownMax cylinder head that has already successfully been introduced with its
Due to modifications of the already great predecessor, the LRP ZR.28 Spec.4 Pullstart has been significantly improved in the carburettor vernier adjustment as well as in the cooling of the cylinder head. The Heavy-Duty CoolDownMax cylinder head that has already successfully been introduced with its bigger brother, now also serves in the ZR.30.
A completely new carburettor has been build-in for an even better adjustability especially when in at idle speed. The performance, especially when stationary, has been improved with this move. All in all, the ZR.28 Spec.4 offers more torque with better adjustability and improved responsiveness.
Otherwise being a giant, it is a true midget in its dimensions. Due to its compact construction the engine can be used as a direct replacement to the .21 engines. The ZR.28 Spec.4 fits into all common .21 engine mounts.
FEATURES
- MASSIVE Big Block size - You cannot replace displacement with anything… but even more displacement!
- New CoolDownMax cylinder head - Improved cooling and higher efficiency through new cooling fin arrangement
- XTEC PowerCarb3 15S-2 carburettor - Flow optimised carburettor with 9.0mm insert for maximum power and easy adjustability at the same time
- Universal fit - Fits all major .21 engine mounts
- 6 + 1 Ports
- FREE PLUG - FREE LRP Platinum / Iridium R5 glow plug included
- Standard burn room - Guarantees easy adjustment of the engine in all conditions
- XTEC T6 engine housing - Especially reinforced heavy duty engine housing for toughest offroad action
- Massive con rod - Extra reinforced con rod. Specially adjusted for .28 engines
- Ultra strong pullstart - Pullstart specifically developed for big block engines
- Power Start capable - Prepared for the use of the LRP Power Start for starting the engine at the push of one button
- Torque you can barely handle
TECHNICAL DATA
Cubic capacity.28 (4.57 ccm)
Glow PlugLRP Standard R5 (No. 35051)
CarburetorXTEC PowerCarb3 15S-2 with 9mm Venturi
Class1/8th Offroad Buggys/Truggys
*Figures may vary depending on used fuel, muffler and tuning
- Brand: LRP
- Part No: SCH-LRP32803
- Barcode: 5051294145415
- Displacement: 4.6cc (0.28ci)
- Starter: Pull Start
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Hi will this fit in hyper 7 tq2 sport 28
Asked by Scooby on 15th March 2021
Yes that should fit fine
Answered by: Ben @ Wheelspin Models
Hi could you please advise what clutch to order with this engine also what bell housing
Asked by Reece on 24th March 2021
That does depend a little on what you're fitting it into? However pretty much any standard clutch should fit. Some nice options would be say TLR342014 or TLR9101 or REDMUQU0063
Answered by: Ben @ Wheelspin Models
Could I change the the carb around as throttle is on other side on my Rc
Asked by Reece on 24th March 2021
Yes you can flip the carb around easily
Answered by: Ben @ Wheelspin Models
hi, what clutch nut can i use for this engine please?
Asked by James on 11th May 2021
Any standard clutch nut would work - eg say HPI-101062
Answered by: Ben @ Wheelspin Models
Hi, im looking for an engine upgrade for my hpi trophy (v1) 4.6can you suggest any thing that will fit, os would be great. but just need something thats a reliable starter as the original nitrostar has been poor
thanks
Asked by Liam on 30th May 2021
This would fit and work well in there
Answered by: Ben @ Wheelspin Models
Hi
I have this engine to fit into my Hyper VS but the back plate and pull start bottom out on the chassis, is there a different engine mount or a spacer that I can use that will work?
Thanks
Asked by Kevin Jones on 11th August 2021
Afraid I don't know to a specific spacer/different engine mount that would be taller - however I have seen similar issues in the past on various cars.
Perhaps you could fabricate a spacer from a small section of aluminium? It would just need two holes at the appropriate distance?
Answered by: Ben @ Wheelspin Models
Would this fit in a ftx carnage
Asked by Bradley on 10th December 2021
No, this is to big for that car. You would need FTX6149
Answered by: Si @ Wheelspin Models
Would this fit and be a good replacement engine on my HPI Trophy 3.5
Asked by Ben Cunnington on 2nd July 2022
Yes this would be good with that car
Answered by: Si @ Wheelspin Models
Will this engine fit 1.8 scale kyosho mad crusher
Asked by Nigel Morris on 20th November 2022
Yes, this is a big block engine so should fit that car
Answered by: Si @ Wheelspin Models
Does the lrp 28 engine come with the brass taper for the fly wheel on the savage, or do I have to remove it from the old engine?
Asked by Gary Anderson on 10th December 2022
You would need to use the one from the old fly wheel.
Answered by: Si @ Wheelspin Models
WILL THIS FIT A SAVAGE X 4.6
Asked by Shane Heath on 14th March 2023
That should fit fine.
Answered by: Steve @ Wheelspin Models
Will it fit/work in a HOBAO HYPER VT NITRO
Asked by James on 2nd July 2023
Yes this would be OK in that car, you may need to raise the engine slightly to clear the bigger pull start that this engine has.
Answered by: Si @ Wheelspin Models
Do you do a roto start system for this engine and how much for both please
Asked by Matthew Arnold on 24th January 2024
We do not do a roto start system for that engine.
Answered by: Steve @ Wheelspin Models
