Go Back  R/C Tech Forums > General Forums > Nitro Off-Road
Pictures of modified V-spec sleeves >

Pictures of modified V-spec sleeves

Pictures of modified V-spec sleeves

Old 11-13-2007, 10:27 PM
  #1  
Tech Regular
Thread Starter
 
Join Date: Mar 2005
Location: Hokksund, Norway
Posts: 354
Default Pictures of modified V-spec sleeves

Hi, can someone please post pictures of modified sleeves for the V-Spec (eb mods, JP, OS Speed etc).
Would be interesting to see the difference.

Frode
Tigergutt is offline  
Old 11-14-2007, 08:16 AM
  #2  
Tech Elite
iTrader: (2)
 
rltanner's Avatar
 
Join Date: Aug 2007
Location: Lake Havasu City,AZ
Posts: 2,681
Trader Rating: 2 (100%+)
Default

rltanner is offline  
Old 11-14-2007, 09:57 AM
  #3  
Tech Master
iTrader: (38)
 
Join Date: Jul 2007
Location: Planet Earth, 3rd Planet from the Sun
Posts: 1,119
Trader Rating: 38 (100%+)
Default

LOL! would be interesting to see or are you thinking that you'd grab a dremel and make an attempt of your own, basically duplicate their work?

The sleeve is only only a small part of a modified engine. The piston, crank, button head, and even the crank case itself may have been worked.

There are many great articles on 2-stroke engine porting. Read up. You'll see/learn that engine porting governed by many factors such as rod length, port height within the case itself...

Just looking at a piston sleeve and "unlocking" speed secrets just isn't going to happen...
bushyar15 is offline  
Old 11-14-2007, 04:12 PM
  #4  
Tech Elite
iTrader: (67)
 
22Racer's Avatar
 
Join Date: Mar 2002
Location: Wanamingo Mn
Posts: 3,150
Trader Rating: 67 (100%+)
Default

I looked at modded V-spec that was ran by a pretty good sponsored racer. They modded the crank and sleeve but didn't even touch the sharp edge on the exhaust where it meets the pipe or touch anything in the case (most italian engines have a nice break or radius on the exhaust) To me the sleeve on a v-spec is pretty decent from the factory, I think you can gain alot with the work on the case.

Rex
22Racer is offline  
Old 11-14-2007, 04:55 PM
  #5  
Tech Adept
iTrader: (5)
 
tmperformance1's Avatar
 
Join Date: Jan 2007
Location: florida
Posts: 204
Trader Rating: 5 (100%+)
Default

anybody who would post a pic of a modded sleeve or crank is doing the modifier a big disrespect. these guys spend countless hours fine tuning there cuts and not to mention r&d time an money. good engine modifiers who know what to do to each specific engine and application have spent hundreds of hours and thousands of dollars on r&d not to mention equipment used to make each cut the same. cnc machines for instance aint cheap. if you want to know the difference talk the modifier himself he will explain to you what u need to know. when choosing a modifier look at his resume see what races his motors have won. www.murnanmodifiedmotors.com check him out good guy and the motors scream.
tmperformance1 is offline  
Old 11-14-2007, 06:12 PM
  #6  
Tech Elite
iTrader: (57)
 
jpz_67's Avatar
 
Join Date: Jul 2006
Location: Texas.
Posts: 2,014
Trader Rating: 57 (100%+)
Default

Yeah, true that. My good friend here where I run modifies a lot of peoples motors including my own and as a courtesy I always keep the engines no matter what. Even when they are wore out I hang on to them so they are not getting circulated for others to dissect.
jpz_67 is offline  
Old 11-14-2007, 06:22 PM
  #7  
Tech Champion
iTrader: (11)
 
Maximo's Avatar
 
Join Date: Jan 2005
Posts: 7,901
Trader Rating: 11 (100%+)
Default

Well its not a V-Spec... But here is the sleeve of a Picco P7R EVO2 i have modified... This whole sleeve was done 100% by hand files, only using a dremel for final smoothing...



Maximo is offline  
Old 11-14-2007, 06:41 PM
  #8  
Tech Elite
iTrader: (67)
 
22Racer's Avatar
 
Join Date: Mar 2002
Location: Wanamingo Mn
Posts: 3,150
Trader Rating: 67 (100%+)
Default

I haven't seen any modded motors that looked like they were done on a cnc. I have alway's been curios why the Picco motors transfer ports are angled the wrong way? (I'm assuming cost, because everything is done from one angle)

Maxximo, nice looking sleeve, usually the cut on the side ports are both on the exhaust side.

Rex
22Racer is offline  
Old 11-14-2007, 10:32 PM
  #9  
Tech Champion
iTrader: (11)
 
Maximo's Avatar
 
Join Date: Jan 2005
Posts: 7,901
Trader Rating: 11 (100%+)
Default




I dont seee how the Picco transfers are cut wrong... these motors make massive power on the dyno... If Picco is doing something different its obviously working....
Maximo is offline  
Old 11-15-2007, 02:11 PM
  #10  
Tech Elite
iTrader: (67)
 
22Racer's Avatar
 
Join Date: Mar 2002
Location: Wanamingo Mn
Posts: 3,150
Trader Rating: 67 (100%+)
Default

The air traveling through the tranfer port flows the opposite way (from inside out) On Novarossi's and the Axe Rossi I've worked on the transfer ports angle upward to help flow. The Picco's are the same angle as the ports, it must not be a big deal because I know picco's have good power.

Rex
22Racer is offline  
Old 11-15-2007, 02:56 PM
  #11  
Tech Champion
iTrader: (11)
 
Maximo's Avatar
 
Join Date: Jan 2005
Posts: 7,901
Trader Rating: 11 (100%+)
Default

Originally Posted by 22Racer
The air traveling through the tranfer port flows the opposite way (from inside out) On Novarossi's and the Axe Rossi I've worked on the transfer ports angle upward to help flow. The Picco's are the same angle as the ports, it must not be a big deal because I know picco's have good power.

Rex
Ahh your refering the to the bypass ports, not the transfer ports.... the 2 small ports on the lower portion of the sleeve correct ??????

the the Picco transfer ports are no different then any other mills..
Maximo is offline  
Old 11-15-2007, 04:15 PM
  #12  
Tech Regular
iTrader: (1)
 
mremtr's Avatar
 
Join Date: Nov 2005
Posts: 420
Trader Rating: 1 (100%+)
Default

AH BUNK ! if you post pics of these moddified engine parts nobody is going to send out the spy police to take you down ! If you think that the big modders' out there don't know what the other is doing ,your nuts!! They don't care they believe what they do is good for their app. I have talked with a bunch of them and they know! And they do their own style of modding and stand by it.
mremtr is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.