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LRP Z28 Spec 3 - 3/16/2006 5:57:00 PM   
HerrSavage


 

Posts: 6630
Joined: 9/17/2005
From: Leipzig, , GERMANY
Status: offline 		I just saw that the shop where I bought my Savage X is now selling the new LRP Z28 Spec 3..

Now, I was all set and decided on the LRP Z28 Spec 2 for my X, but now I just saw this.. AND it's cheaper - at least here in Germany, than the Spec 2.

Howerver, it says 8+1 ports. Now, I hate to sound so dumb - but what does that mean? I remember reading somewhere that more ports = more difficult to tune... Is that true? Apparently the Spec 2 is an absolute beast of an engine, and I've heard tons of good stuff about it.

But what about this new Spec 3 - how should it compare with the Spec 2? As I'm still very newbish, tuneability and ease of installation are VERY high on my list of motor upgrade priorities.... I've heard the Spec 2 is good in both ways.

Any feedback would be great, as I'm itching to order a new motor but before spending so much I want to make sure I do the right thing...

(BTW, there's also an Axial 28 on e-bay here for a very good price.. Still trying to find out more on Axial motors. Doesn't seem to be too many out there, but most of the comments I come across seem to be positive...)

FYI:
1.) LRP Z 28 Spec 2: €200 minimum new, in Germany(or I wait six weeks for my fam to get if for me for much cheaper from Tower and ship it..)

2.) LRP Z28 Spec 3, which I just saw, for €190..(NOT cheap though..)

3.) Axial 28, €139

4.) Axial 32, €199

To be totally honest, I don't want to spend more than €150 MAX, but if this new Spec 3 is ALL THAT, then, well, what the hell..................

Thanks.
       Post #: 1

RE: LRP Z28 Spec 3 - 3/16/2006 7:33:38 PM   
bibo



Posts: 261
Joined: 3/29/2005
From: Cairo, EGYPT
Status: offline 		I am surprised SPEC 3 is not available on Tower yet , not even on order.

8 + 1 means 8 fuel ports and 1 for the exhaust while 6+ port engines usually have a smoother power band and better top end than 3 ports engines.

The two 6+ ports engines I have ( K4.6 and LRP ) are both easy to tune so I don't think that higher the ports means the harder to tune.

After seeing the power of SPEC 2 I think SPEC 3 will be a screamer.

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Latest setup : Savage X | Picco .28 | 3 Speed | Bow Ties 40 series on Mambos

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       Post #: 2

RE: LRP Z28 Spec 3 - 3/16/2006 9:09:38 PM   
supertib


 

Posts: 3795
Joined: 3/30/2004
From: , MB, CANADA
Status: online 		there is a chance this new Spec 3 is just a re-badged K4.6 not a SH made................this is only my own theory though and not official....IMO I surely hope it is SH made as SH are awesome mills

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       Post #: 3

RE: LRP Z28 Spec 3 - 3/16/2006 9:41:21 PM   
Philster


 

Posts: 1151
Joined: 2/17/2005
From: Crum Lynne, PA, USA
Status: offline 		Answering question about ports and such:

More ports = make power at high rpm, has high redline, sacrifices low-end torque/grunt

Fewer ports = makes power at lower rpm, has lower redline, sacrifices high-end horsepower for low-end torque/grunt.

Those are general guidelines.

O.S., a very well respected company, went with 3 ports when designing a monster truck engine. This makes complete sense. You build top speed with your gearing, ensure low end punch with the engine design.

It's all preference.

Full scale cars use varible valve timing to get the best of both worlds. A four valve per cylinder engine can open two intake ports at low rpm, to sustain torque. At higher rpms, the other two ports open up to sustain horsepower and high redline. If you have all the ports open all the time, low end punch suffers. With multiports open all the time drivability suffers as the engine screams alot, but tunability really doesn't.

My 8port Hyper 21 screams like a banshee, but doesn't have low-end grunt for grass and stuff. Of course, once you are up to .28, .30 and .32 motors, the sheer size and power overcomes any actual design flaw.




< Message edited by Philster -- 3/16/2006 9:46:28 PM >

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RE: LRP Z28 Spec 3 - 3/16/2006 9:43:48 PM   
HerrSavage


 

Posts: 6630
Joined: 9/17/2005
From: Leipzig, , GERMANY
Status: offline 		This motor has nothing to do with the SH. The SH28 Pro is apparently basically the same as the LRP Z28 Spec 2, but this Spec 3 is 8+1 ports, not 6+1 like the other two. It's also got a rated HP of 3.89, while the other two are rated at 3.81. I don't care about arguing how accurate those numbers are in reality, but I don't think LRP would rate it as slightly higher than the Spec 2 totally without justification..

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       Post #: 5

RE: LRP Z28 Spec 3 - 3/16/2006 9:54:19 PM   
HerrSavage


 

Posts: 6630
Joined: 9/17/2005
From: Leipzig, , GERMANY
Status: offline 		Damn, I like the idea of a screaming banshee motor, but I drive mostly on grass. For me to buy this motor - and I'm very tempted - in the end would cost about the same as if I got my family to buy me an OS 30 Savage from Tower - with Tower's discount system..

Still, from what I've read though, I'd take the LRP Z28 Spec 2 over the OS 30.

And as far as low-end torgue goes, doesn't that also mean just flipping over a lot and uncontrollable wheelies? I mean, I sometimes wonder if most of these bigger motors are just too powerful to really be able to drive in anything approaching a controlled way. Most vids seem to be of flipping over and out-of-control wheelies.. Cool I suppose for showing off, but I'd rather have something high-revving and screaming though.. At least I think I would. I don't really know. I've only ever driven with my old NS25.. But of all the videos I've seen, I like the way the performance of a Picco 26 looks for ex.. Seen some VERY fast looking Savys with Mach 28's + 3-speeds as well.. The Piccos 26's seem laser-QUICK and responsive, but not overpowered and over-grunty like some vids I've seen..

(Shying away from Piccos BTW cuz 1.) I've heard there can be tuneability issues, and 2.) lack of availability here in Germany..)

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       Post #: 6

RE: LRP Z28 Spec 3 - 3/16/2006 9:57:47 PM   
HerrSavage


 

Posts: 6630
Joined: 9/17/2005
From: Leipzig, , GERMANY
Status: offline 		Also, here in Germany the LRP Spec 2 is far and away the most popular tuning motor for the Savage. So why would they have changed it that much, if not to improve it in some way that makes sense?

Coincidentally, I got the LRP newsletter today(why I don't really know..), and in it they advertised the Spec 3, and really emphasized the bashability of it - as if it's made for jumping off ramps, etc..

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       Post #: 7

RE: LRP Z28 Spec 3 - 3/16/2006 11:29:14 PM   
supertib


 

Posts: 3795
Joined: 3/30/2004
From: , MB, CANADA
Status: online
quote:

ORIGINAL: PatrickBW

This motor has nothing to do with the SH. The SH28 Pro is apparently basically the same as the LRP Z28 Spec 2, but this Spec 3 is 8+1 ports, not 6+1 like the other two. It's also got a rated HP of 3.89, while the other two are rated at 3.81. I don't care about arguing how accurate those numbers are in reality, but I don't think LRP would rate it as slightly higher than the Spec 2 totally without justification..


Well sir SH makes the LRP engines, and they are awesome......Now if LRP decided to drop SH and use the K4.6 as a platform instead it would likely be down on power.....Advertised HP means nothing and AE is as crooked as they come for false claims.....So until I know the new Spec 3 is built by SH I wouldn't be jumping all over it.....As far as AE goes they will buy from the cheapest manufacturer they can.......

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seeing is believing !

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       Post #: 8

RE: LRP Z28 Spec 3 - 3/16/2006 11:35:36 PM   
bibo



Posts: 261
Joined: 3/29/2005
From: Cairo, EGYPT
Status: offline
quote:

ORIGINAL: supertib

quote:

ORIGINAL: PatrickBW

This motor has nothing to do with the SH. The SH28 Pro is apparently basically the same as the LRP Z28 Spec 2, but this Spec 3 is 8+1 ports, not 6+1 like the other two. It's also got a rated HP of 3.89, while the other two are rated at 3.81. I don't care about arguing how accurate those numbers are in reality, but I don't think LRP would rate it as slightly higher than the Spec 2 totally without justification..


Well sir SH makes the LRP engines, and they are awesome......Now if LRP decided to drop SH and use the K4.6 as a platform instead it would likely be down on power.....Advertised HP means nothing and AE is as crooked as they come for false claims.....So until I know the new Spec 3 is built by SH I wouldn't be jumping all over it.....As far as AE goes they will buy from the cheapest manufacturer they can.......

SPEC 3 is also made by SH and it looks exactly like SPEC 2 , here's a pic :


Attachments
Click to see fullsize image.
Click for fullsize


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RE: LRP Z28 Spec 3 - 3/16/2006 11:39:01 PM   
HerrSavage


 

Posts: 6630
Joined: 9/17/2005
From: Leipzig, , GERMANY
Status: offline 		What is AE? IF you mean Associated, I don't think they have anything to do with LRP, at least here in Germany - LRP is the distributor for HPI in Europe - I believe.. The MTA 4, what believe you guys know as the Monster GT, here is a Team Associated, and is the Savage's main rival over here...

Anyway, I don't believe it's correct to say that HP claims don't mean ANYTHING. They don't have to be correct, but if one motor has a claimed HP of 3.89, and another of 2.4 or whatever, that's at least an indicator of something - especially if they're motors from the same company. I don't care about actual dyno tests - I've heard all that. I don't really care about actual HP - just having whichever motor will meet my needs the best.. Speed, tuneability, reliability, quality, etc... If somebody wants to go dyno 100 motors and say that a SH28 has only 1.3 HP or whatever, who cares, cuz it's still relative.. And relatively, I've heard SH28's are pretty damn powerful.

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       Post #: 10

RE: LRP Z28 Spec 3 - 3/16/2006 11:41:01 PM   
HerrSavage


 

Posts: 6630
Joined: 9/17/2005
From: Leipzig, , GERMANY
Status: offline 		Maybe there'll be an SH28 Pro Spec 2 coming out soon, which is identical to the LRP Spec 3..............................................................

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       Post #: 11

RE: LRP Z28 Spec 3 - 3/16/2006 11:52:35 PM   
bibo



Posts: 261
Joined: 3/29/2005
From: Cairo, EGYPT
Status: offline 		LRP are the distributors of HPI products in Germany , Associated are the distributors of LRP products in the U.S.

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Latest setup : Savage X | Picco .28 | 3 Speed | Bow Ties 40 series on Mambos

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       Post #: 12

RE: LRP Z28 Spec 3 - 3/17/2006 2:13:07 AM   
supertib


 

Posts: 3795
Joined: 3/30/2004
From: , MB, CANADA
Status: online
quote:

ORIGINAL: PatrickBW

Maybe there'll be an SH28 Pro Spec 2 coming out soon, which is identical to the LRP Spec 3..............................................................



That is what I am hoping for.........But till I see a good picture of the block, or someone confirms I wont get too excited. LRP may have just switched suppliers, and its possible the new motor may not be as good as the last.

And for the Buffoon who's not getting the picture, remember the Orion Wasp 28, which they claimed had more HP then the Orion Wasp 26, meanwhile the Wasp 26 was an italian engine made by Pico and the Wasp 28 was an El-Cheapo Toki 28.....Yet Orion sold a whole pile of Wasp 28's and left hundreds of people with a useless paperweight....Now until I see the new LRP 28 is in fact a SH I wont get too excited. As we know if it is in fact a better version of the SH28 Pro its going to be a ripper of an engine. But if LRP decided to buy from another supplier the new motor may not be as good as the SH built Spec 2....In the RC World this happens all the time, and you may in fact find out the new LRP spec 3 is actualy a step down from the highly regarded Spec 2.....So I wouldn't drop a dime till the new motors origins are confirmed.

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seeing is believing !

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RE: LRP Z28 Spec 3 - 3/17/2006 3:17:48 AM   
mosavage


 

Posts: 698
Joined: 7/18/2005
From: wildomar, CA, USA
Status: offline 		so noone has it. how would it compare to the picco 28

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