Just want to give a bump up (and refresh some unaswered questions that TRArena asked some posts ago) about P/S sets aleternatives for the .21 tuned GRP.
Since i planned to completely renew this engine to use it as my jolly joker for some races (my actual picco does not perform as well as the GRP), i managed to find here in italy all the main spares (bearings, rod, pin, o-rings) bought from various sites, except for an original GRP P/S.

Instead i found availables some Ninja MR and Falcon piston-sleave sets and i want some credit that it'll be identical to the OEM GRP one. I compared the technical sheets of these engines and they are all the same.

I also wanted to give GRP a call but i found this thread and would appreciates infos from you well prepared guys. Thx

Check out the following website...

tecnopower-motor.com

i looked at the site but they dont have anything besides glow plugs

I've checked out too and glad to know obout a new engine manifactuer, but i did not undestand how Tecnopower is related to old GRP engines, even if I see a similar one on the home page.
It's not even a direct answer of my question about piston/sleave sets alternatives, as i only needed to know if Ninja MR's or Falcon B5's are the same as original GRP's ones.
Maybe it was an invitation to directly contact you tecnopower.....
Anyway just waiting for someone who has info about eventual differences between the ditto P/S sets.

Thanks again
Fabio

check the "about us" page at that site. They state that they manufactured the GRP. And, now they have formed Techno Power. Rody Roem (of RB Engines) is involved. I guess the question is...........will they make parts available for the previous GRPs?

Does anyone have a Ninja/GRP engine tooling kit they want to sell? Thanks!

I've been looking for one as well.

Noticed a couple piston/sleeves on carolinarc a couple weeks back; kicking myself for not ordering them now

the only diffrence between the grp 21 and the grp based ninja 21 is the grp has a silicone filled crank ninja doesnt ninja has a little more agressive porting with more of a fang cut on the ports as the grp doesnt some of the early grps had the same porting as the ninja i think the early ones were left over ninja p/s they used up gor grp other wise every thing will fit each other dont know about the boss line up hope this helps same thing with the 28 engines also

Hi Guys,

Sorry not to be so reactive, but here some update. I have been quite busy to try and setup this new project manufacturing my own engines. Important to know that TecnoPower has NO connection whatsoever with GRP!

First challange was to get everything together again since when GRP burned, all the plans and many other things burned with it too, so we had to start from almost scratch..., except for some inventory left at their main supplier.

Our first challenge was to first reproduce the .21 buggy engine. We have started our production and can give you the following information about the spare-parts:

• The crankshaft Diam. 14mm/Stroke 16.80mm/Conrod pin 5.00mm
• Sleeve outside diam. 19.50/Piston 16.28mm
• Conrod for pin 5.00mm
• Main bearing 14x25.4
• Carburetor nek 15mm

I am sorry not to have all the knowledge of the whole line of engines GRP has produced before, but will try to answer the questions which are placed here.

For the US market, I am in contact with Mugen USA who can get spares and glowplugs when they want if needed.

Rody

so are you guys making the copy of grp 21 engines dont quite understand are the rods going to be the same as far as the upper rod hole not having the brass bushing thanks for your time

If they wanted to reuse the previous designs from the GRP engines, why didn't they take them out before they set the fire?

I had a Ninja MR21 B01 that I'm parting out. I've got a few parts left, if anyone of you is interested just pm me, check out my forsale thread here:

http://www.rctech.net/forum/r-c-item...1b01-21-a.html

As far as I know, most parts are interchangable between the MR ninja and the GRP.

::maybe they didnt understand nitro fuel lit up so quick

Yeah the deal really sucked wind when the plant caught on fire the GRP is a solid buggy motor /// some people made some good extra $$$ on the his conrod purchase each sold for over a 100 bucks thats called supply and demand that was awesome just missed that posting like always.

Yes, this engine is based upon the latest model they had some time ago now. The conrod we are now making has no bushing in the upper hole and the hole has a diam. of 4.2mm.

Rody