stealth_revo

Alright. I know some of you told me to just stick with the 454, but here is the thing. I part the LRP on ebay, so I have one sitting here. And I have the 454 sitting here. Cost is within $10. Which would you put in your XXL (or LST2? etc).
Another thought. I have the HT pipe, or my 086 pipe. 086, right?
My STS engine is either shot, or I will shoot it! I just don't want to deal with it anymore!

twomanytoys

The 454 is an LRP spec2. The new LRP that everyone likes is the spec3. The spec3 has more power but both are good motors. I think you will be happy with the 454.

stealth_revo

I have the spec 3. How positive are you on the spec 2 and 454 being the same?

TnRCguy

I thought the 454 was the same as the spec 3??

twomanytoys

the LRP spec 3 is rated at 38,500 rpm, 3.81 hp 8+1 ports while the 454 is rated at 36,000 rpm's 3.5 hp and 7+1 ports. The spec 2 is rated at 36,000 rpm, 3.5hp and 7+1 ports. Exactly the same as teh 454.

Sugafree

The 454 IS the Spec 3!

Spec 3 Sleeve,




454 Sleeve

twomanytoys

Tehn why are the specs different and one says 8+1 port and the other says 7+1 port. They have teh same number of ports?

Sugafree

They are the Same Piston/Sleeve/Crank....Different Carb and Cooling head/Backplate the Rest is 100% the same,

SH PT28XM1AC-P8 VS Losi 454 Engine Specs VS LRP Z .28R Spec 3
• BORE: 18.50mm VS • BORE: 18.50mm VS Bore: 0.73" (18.5mm)
• Stroke: 17.00mm VS • Stroke: 17.00mm VS Stroke: 0.63" (17.0mm)
• RPM: 36,000 VS • RPM: 36,000 VS Max RPM: 38,500
• Weight: 422 g VS • Weight: 390 g VS Weight: 15.9 oz (450g)

stealth_revo

So which carb/head/backplate is better? I guess really the carb is all that matters.. I do hate the orange head though!

Sugafree

LRP always has the Better Carbs......The LRP Truggy Engine has a Even better Carb with Inserts,

stealth_revo

what are those inserts for anyway?

twomanytoys

So the carb is where it gets its extra rpm's from. Also looking at the specs it says the number of ports are different? I use the LRP with the Sportwerks v2 carb. Same carb as the truggy version. SH does have some good carbs.

MaddMatt

Wait for the lrp .30 to get here...[>:]

supertib

The specs listing they have for these engines is absolutely terrible....first thing is the HP rating is way out to lunch, second thing is they are not 8 port engines, nor are they 7 port engines....they are in fact only 6 port engines, they have 2 extra bypass ports but they are not intake ports...when we refer to port count we are talking about the intake ports and intake ports only...a LRP Spec 3 and a Losi 454 only have 6 intake ports.... I honestly wouldn't worry too much about the differences in specs as the specs listed are numbers rattled off by the marketing team

bigblock454XXL

My Feedback: (-1)

All I need is my 454. Keep waiting for that LRP 30. Your gonna need two of them! Talks cheap, let's race!!

stealth_revo

Haha, I think I will be ordering it next week actually. With promo code, you can pick the engine up at tower for $175!

Fordtrucks96

Is the 454 a direct bolt in replacement for a aftershock? O hear a lot about it and wonder how it would run out over the .26SS

stealth_revo

Yep, sure is! Well, maybe you'd need different engine mounts...?

mmduc

where can i find an lrp carb.? tower doesnt list it

stealth_revo

I'd say I have one, but I sold them all already! I part out the LRP 28... eBay - Dollarhobbyz_2

stealth_revo

Oh, andI have the same prob with my LRP carb... I threw the 28 in my XXL. But I still have high idle. Maybe you will have better luck.
Oh, and I was selling the carb for $24, but it was too low because I had three and they only lasted a day on eBay

MaddMatt

I would say go with the LRP, I saw a 445 XXL run and expected it to be better...