R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 01-11-2009, 06:23 PM   #1
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default New "US Spec" Team Orion CRF .21

My AB Mods Team driver Brian Dunbar who is also sponsored by Team Orion came by today with the new US Spec CRF .21 engines. They have made some changes on the engine such as sleeve port timing, crank timing, venturi, and a new drilled/lightened cooling head. So I'm going to break them in and do some dyno testing etc. I snapped a few quick pics of the engine, so here is a sneak peak of the new US spec Orion CRF .21 offroad engine!







__________________
Adam Blevins Owner/Operator of AB Mods X-Dyno equipped and World Record holding engines!
www.ABMods.com

Last edited by Colt4g63; 01-19-2009 at 08:11 AM.
Colt4g63 is offline   Reply With Quote
Old 01-12-2009, 03:39 PM   #2
Tech Addict
 
German Muscle's Avatar
 
Join Date: May 2006
Posts: 557
Trader Rating: 8 (100%+)
Default

Looks like a cool engine. Ive googles for about an hour and couldnt find anything on it. So this might be a factory driver engine or a future release in testing? Whats with the exhaust port? Looks like the wall thickness is really thick with some casting flash or is it just the picture?

Looks like they are still just putting CRF cranks in piccos which is good IMHO.
German Muscle is offline   Reply With Quote
Old 01-12-2009, 08:08 PM   #3
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default

This is the 2009 US Spec CRF .21 Buggy Engine. Basically this years engine. Thats how the exhaust port looks. Its not flash its where they machined it out. Both of them look like that.
__________________
Adam Blevins Owner/Operator of AB Mods X-Dyno equipped and World Record holding engines!
www.ABMods.com
Colt4g63 is offline   Reply With Quote
Old 01-12-2009, 08:38 PM   #4
Tech Lord
 
Integra's Avatar
 
Join Date: Dec 2006
Posts: 12,482
Trader Rating: 8 (100%+)
Send a message via MSN to Integra
Default

mmmm picco.
__________________
TNS Driver - Radio Post - Blue Groove Apparel - Team Panther - Hitec - Losi - W.E.D. Paint - Clockwork Fuel - Competition Heat - SUMO Racing - Tekin - Team Terribles - M2C Racing - Matrix Concepts - Kal Gard - BuKu Power - DE Racing -
Integra is offline   Reply With Quote
Old 01-12-2009, 10:06 PM   #5
Tech Adept
 
alexzone007's Avatar
 
Join Date: Jan 2009
Location: miami
Posts: 224
Default

looks like a LRP .21 ITS THIS ENGINES ARE THE SAME MANUFACTURER
ORION PICO AND LRP SOMEBODY CAN ANSWER ME I HEARD THE LRP ITS LIKE THE ORION AND PICO

I HAVE THE LRP.21 AND HAVE ALOT OF POWER WOULD LIKE TO KNOW CAUSE I WAS LOOKING @ THE ORION OF CAVALIERY
alexzone007 is offline   Reply With Quote
Old 01-13-2009, 10:45 AM   #6
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default

The new LRP is using a EVO 2 crankcase which is a totally different case then this engine. The new LRP the JPX and the P7Rs are all made by Picco to answer your question . But beyond popular belief there not all the same... There are different specs on all of them. Don't let anyone tell you different. Small timing changes here and there from engine to engine can make a big difference in power and powerband. Its just like modifying an engine... You can hack one up all you want but the power isn't found by cutting it to pieces so it looks flashy.. its in the timing profile changes of the engine and sometimes where applicable, combustion chamber alterations. I do this for a living, own an X-Dyno for R&D etc. I can tell you from personal experience that in some engines just 1 small timing alteration in the right place to the right degree can make a very significant difference on power and the engines powerband/delivery.
__________________
Adam Blevins Owner/Operator of AB Mods X-Dyno equipped and World Record holding engines!
www.ABMods.com
Colt4g63 is offline   Reply With Quote
Old 01-13-2009, 06:24 PM   #7
Tech Fanatic
 
Join Date: Feb 2002
Location: Greenwood, IN
Posts: 779
Trader Rating: 4 (100%+)
Send a message via Yahoo to windellmc
Default

What diameter is that carb restrictor?
__________________
MP9 tki4
Truggy?
windellmc is offline   Reply With Quote
Old 01-13-2009, 06:29 PM   #8
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default

It's supposed to be a 7mm but with a simple set of mics its more around 6.5mm.
__________________
Adam Blevins Owner/Operator of AB Mods X-Dyno equipped and World Record holding engines!
www.ABMods.com
Colt4g63 is offline   Reply With Quote
Old 01-13-2009, 07:28 PM   #9
Tech Addict
 
sugs's Avatar
 
Join Date: Nov 2008
Location: Escondido, CA
Posts: 566
Trader Rating: 3 (100%+)
Default

Saw a couple of these in action at ARC this past weekend. Very impressive mills.
__________________
- Associated B4.1 Worlds -
- Associated SC10 FT -
- Associated SC10 4x4 -
- Mugen MBX6 Alpha F850 -
- Nomadio Sensor - Hitec servos - Panther tires - DE Racing -
sugs is offline   Reply With Quote
Old 01-13-2009, 07:35 PM   #10
Tech Elite
 
porkchop's Avatar
 
Join Date: May 2004
Location: o-h-i-o
Posts: 2,830
Send a message via AIM to porkchop Send a message via Yahoo to porkchop
Default

take the back plate of i want see what they changed
__________________
charles garten
serpent / novarossi / Desoto Racing / Absolute Hobbyz / ko propo / first turn racing usa / KustomRcGraphics / O'donnell racing fuel / Houstons Engine Service / sweep racing tires
porkchop is offline   Reply With Quote
Old 01-13-2009, 07:37 PM   #11
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default

Looks the same.
__________________
Adam Blevins Owner/Operator of AB Mods X-Dyno equipped and World Record holding engines!
www.ABMods.com
Colt4g63 is offline   Reply With Quote
Old 01-13-2009, 07:38 PM   #12
Tech Elite
 
porkchop's Avatar
 
Join Date: May 2004
Location: o-h-i-o
Posts: 2,830
Send a message via AIM to porkchop Send a message via Yahoo to porkchop
Default

o dont give me that one lol
__________________
charles garten
serpent / novarossi / Desoto Racing / Absolute Hobbyz / ko propo / first turn racing usa / KustomRcGraphics / O'donnell racing fuel / Houstons Engine Service / sweep racing tires
porkchop is offline   Reply With Quote
Old 01-14-2009, 12:02 AM   #13
Tech Adept
 
alexzone007's Avatar
 
Join Date: Jan 2009
Location: miami
Posts: 224
Default

Quote:
Originally Posted by Colt4g63 View Post
The new LRP is using a EVO 2 crankcase which is a totally different case then this engine. The new LRP the JPX and the P7Rs are all made by Picco to answer your question . But beyond popular belief there not all the same... There are different specs on all of them. Don't let anyone tell you different. Small timing changes here and there from engine to engine can make a big difference in power and powerband. Its just like modifying an engine... You can hack one up all you want but the power isn't found by cutting it to pieces so it looks flashy.. its in the timing profile changes of the engine and sometimes where applicable, combustion chamber alterations. I do this for a living, own an X-Dyno for R&D etc. I can tell you from personal experience that in some engines just 1 small timing alteration in the right place to the right degree can make a very significant difference on power and the engines powerband/delivery.
ok thank you very much !!!!
alexzone007 is offline   Reply With Quote
Old 01-14-2009, 01:49 PM   #14
Tech Addict
 
German Muscle's Avatar
 
Join Date: May 2006
Posts: 557
Trader Rating: 8 (100%+)
Default

Quote:
Originally Posted by porkchop View Post
o dont give me that one lol
You cant see timing changes with the naked eye. It takes precision Micrometers to time an engine accurately. So here is some pics.

http://letmegooglethatforyou.com/?q=...+road+pictures


Colt, have you ran these engines yet? Any reports on performance and fuel economy?
German Muscle is offline   Reply With Quote
Old 01-14-2009, 08:31 PM   #15
Tech Addict
 
Colt4g63's Avatar
 
Join Date: Apr 2006
Posts: 602
Trader Rating: 8 (100%+)
Default

I have about 3/4 of a gallon through one of them. So far its seems to be a great engine! It tuned in easy and is holding its tune very well. Havent had it on a track to report any kind of run times. But I can say even with the 6.5mm insert the engine has alot of grunt to it! It's not having any trouble pulling the 8T around at all.
__________________
Adam Blevins Owner/Operator of AB Mods X-Dyno equipped and World Record holding engines!
www.ABMods.com

Last edited by Colt4g63; 01-16-2009 at 01:57 PM.
Colt4g63 is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 06:29 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net