NSR250.net Forums Logo: Honda NSR 250 Forums, Classifieds and Service Manual in English. Covering All Honda NSR 250 MC16, MC18, MC21 and MC28 models
NSR250.net Forums

#
 
#
 
Performance Engineering

  • NSR250 Forums Index ‹ NSR250R Discussion
  • Members Content
  • Members Garage
  • Subscription
  • Transactions
  • FAQ
  • Search
  • Register
  • Log in

Saved from the grave


Reply to topic   printer-friendly view
Page 1 of 1   Download Topic





rc46

 
Posts: 1115
Joined: 31 May 2005

Location: Peterborough UK
    Send private message View user's profile
    Reply with quote  

Saved from the grave

Mon May 08, 2006 9:20 am » Post: #1 » Download Post

Just bought a NS400RF she's in a bit of a state and if i can get her running over the next few months. My long term project will be underway, Im gona try and get the motor into a NSR250 frame and make a 400 (maybe 500 big bore) road bike thats looks as close to the mc21 as possiable!!!

If any of you own a NS400 and are looking for bits ill be sticking parts up in classifieds as and when they become avaliable. I need all the running gear for now just to get it up and running first!

Oh well............here goes!!! Confused
Back to top


fontyyy

 
Posts: 3509
Joined: 10 Apr 2004

Location: Derbyshire, England
1991 Honda NSR250 MC21
    Send private message View user's profile Visit poster's website MSN Messenger
    Reply with quote  

Mon May 08, 2006 9:31 am » Post: #2 » Download Post

The NS400 lump in an NSR250 frame has been discussed here before, there's problems getting the rear facing cylinder round the shock as far as I recall, (I'll have a search).


Got it.......

http://www.nsr250.net/forums/viewtopic.php?t=2070
_________________
Please do not PM me technical questions, if you can't find it on the Forum start a thread
Back to top


rc46

 
Posts: 1115
Joined: 31 May 2005

Location: Peterborough UK
    Send private message View user's profile
    Reply with quote  

Mon May 08, 2006 10:05 am » Post: #3 » Download Post

Yup thats a fair point, Im gona try first and try and keep it as honda as possiable. I know it slides into a rgv frame or a rs250 frame nicely But i would like to keep it honda, First job is to get the we bugger running. its been sitting for 2 years. the good news is the battery took a charge last night and the ignition came on this morning, so ill clean all the bits out and see if i cant get her running soon, Ill need some advice on how to store an engine as i cant see this being a quick project and dont wana let anything go dry, but im looking forward to it, never done anything like this before!!!! I rekon that if i can get it into a good frame that will be the hardest bit of the project!!!! the rest is money Sad
Back to top


maxim
Supporter - Carbon
Supporter - Carbon
 
Posts: 1356
Joined: 24 May 2004

Location: Kent, UK
1992 Honda NSR250 MC21
    Send private message View user's profile Send e-mail
    Reply with quote  

Mon May 08, 2006 10:26 am » Post: #4 » Download Post

Good luck!! I think you'll be moving into the garage! Twisted Evil
_________________
NSR300R - Why did i ever have a 250...
Back to top


j911brick

 
Posts: 874
Joined: 21 Apr 2006

Location: Republic of Texas
    Send private message View user's profile
    Reply with quote  

Mon May 08, 2006 3:12 pm » Post: #5 » Download Post

How about using a Hawk GT frame?
_________________
james
Its not how fast you go...Its how you go fast.
MC21 Rothmans
RS250
RC31
CRF250X
748R
Porsche (many)
http://members.rennlist.com/j911brick/rennlist3_002.htm
Back to top


nsr.wayne
Supporter - Carbon
Supporter - Carbon
 
Posts: 1068
Joined: 30 Jul 2004

Location: Portsmouth,Hampshire.
    Send private message View user's profile Send e-mail MSN Messenger
    Reply with quote  

Mon May 08, 2006 6:03 pm » Post: #6 » Download Post

If you read that topic that Fontyy put up and i think I've read somewere before that it fits in the NC30 frame as the shock is offset( but I might be talking crap),If you use a NC30 frame then you can use the NC30 swinging arm and build it to look like a MC28 Cool
Back to top


rc46

 
Posts: 1115
Joined: 31 May 2005

Location: Peterborough UK
    Send private message View user's profile
    Reply with quote  

Mon May 08, 2006 6:06 pm » Post: #7 » Download Post

MMM thats a not a bad idea, but not sure how it will line up, i know the rgv is a good fit so might have to go that route!
Back to top


jeff350lc
Supporter - Titanium
Supporter - Titanium
 
Posts: 984
Joined: 26 Mar 2004

Location: southampton uk .
    Send private message View user's profile Send e-mail
    Reply with quote  

Mon May 08, 2006 6:53 pm » Post: #8 » Download Post

If you go for the suzuki, give Mat Grant a PM. Hes got a NS/RGV Cool
Back to top


paul g
Supporter - Titanium
Supporter - Titanium
 
Posts: 1140
Joined: 16 Jul 2005

Location: Cambridge, England
1991 Honda nsr 250 mc21 sp
    Send private message View user's profile
    Reply with quote  

Mon May 08, 2006 8:36 pm » Post: #9 » Download Post

I have been toying with the idea of doing this myself after I have finished my 21. I think it can be done with some serious re engineering of the frame, apart from getting the engine in and aligned I think one of the big problems is routing the rear exhaust as fonty said. the r/h upper shock mount is bang in the way and needs modifying in some way.I have seen a pic of an mc21 with an rg500 engine in it and it looks like the guy has cut away the top of the mount for clearance and welded a brace on to put the strength back, plus you will need to loose the sub frames r/h lower rail. the other problem could be clearance for the carbs between the fwd frame rails.
An rg500 motor in an rgv250 chassis is probably a more straight forward installation and you can buy all the parts from here www.suzuki-rg500.com .
Or a rd500 motor in areverse cylinder tzr chassis like this www.nkracing.co.uk
Back to top


rc46

 
Posts: 1115
Joined: 31 May 2005

Location: Peterborough UK
    Send private message View user's profile
    Reply with quote  

Mon May 08, 2006 9:33 pm » Post: #10 » Download Post

Problem with that is the engines are so GOD DAM expensive AND there is lots of them about (well when i say lots i mean more than any other conversion). I was gona do a RD350 job as its a twin and can go to 480 (i think) but when this came up it was just right, RGVMIKE had it on the classifieds and for 400 quid even if i find out the engines stuffed ill still make my money back in parts! Already sold the fairings for 85quid LOL Very Happy If i cant keep it NSR..... ill see if i can get a NC30 frame and try that, at least itll be honda!!!!!! vfr750 rear hub and away we go!!!! LOL fecking bikes Very Happy
Back to top


Reply to topic   printer-friendly view
Page 1 of 1   Download Topic

NSR250R Discussion

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

  • NSR250 Forums Index
  • All times are GMT
Powered by phpBB © 2001, 2005 phpBB Group


Hosted by NSR250dotNET © 2008 NSR250dotNET