Penton Owners Group

General Discussion => Penton Talk => Topic started by: tooclose racing on April 23, 2010, 05:08:47 PM

Title: The official EP Mikuni jetting survey
Post by: tooclose racing on April 23, 2010, 05:08:47 PM
Hey Ernie - I went looking for an older post I remembered where you had put together some jetting info, taken a picture of it, and posted it here:

http://pictures.aol.com/ap/singleImage.do?pid=c060XSuUTqrrxPgwkZuYlTOlDXjmtGxpl*y5v4xQp5Fd3Ig%3D

Unfortunately, I never saved it to my own top secret "Penton Documents" folder and it has now disappeared.  Or has AOL.com disappeared? [8D]  Its' tough out there...

Could you post your jetting survey document again? This time I promise I'll save it.  Or e-mail me at [email protected]. I've taken possession of a 30mm Mikuni and may "play" with it a bit in my quest for...something. [8)]

Thank you Dr. Speed...
Title: The official EP Mikuni jetting survey
Post by: Dale Fisher on April 23, 2010, 08:19:04 PM
I found this with a search.

http://s250.photobucket.com/albums/gg276/ernie7711/?action=view¤t=jetting5-13-08.jpg
Title: The official EP Mikuni jetting survey
Post by: tooclose racing on April 24, 2010, 10:17:56 AM
Thank you, Dale...that be it!  The resolution is kinda wierd, wonder if that is my browser settings..WAIT, copied to my own folder- I can see it just fine now.

And the link provides us access to Dr. Speed's photo archives.  Hmmm..no pictures of your 250 project(s), Ernie.  Come on...give us a peak.  [8)]
Title: The official EP Mikuni jetting survey
Post by: Ernie Phillips on April 24, 2010, 11:44:17 PM
Bob,

I'll email you the spreadsheet Monday from my office computer.  I think I made some additions.  If you have the large body 30 Mik, I think it will be a very tight fit.  I have a small body 28 if you want to try it.

250 Projects:  Not much to say - In stock trim the motor makes great power and gear selection is just too easy.  I'm not happy with rear suspension yet - still oversprung.  Or, it may be that I'm just not used to the extra weight of the 250 vs 100/125CMF.  Or, it could be that I've been sitting on my a$$ too much this winter and am so out of shape that my speed is just way too slow making me think that my suspension is stiff.  I want my 250 to handle like my '72 CMF.  Is that possible?

Ernie P.
Chattanooga, TN
Title: The official EP Mikuni jetting survey
Post by: tooclose racing on April 26, 2010, 11:42:15 AM
Thanks in advance for the updated spreadsheet, Ernie.  This particular 30mm has a different style cap - came off of a later 70's bike.  It doesn't look that much larger, but this calibration is based purely on my not-so-eagle eye.  

Sad but true - this week will be the first week I pull my bikes out of storage and start fitting up the "new" stuff.  It was a long winter (to sit around and shop on the 'net...).  Cleated pegs, Later-model triples, Renthal Mini-Hi's, MSR controls, Carl Crank Guide, and a Lectron/Gasser are the latest set-up for the MC5.  The Six Day finally gets a pair of WPs.  Ka-ching.

Good luck on your suspension "trouble-shooting" - my lay-down MC5 suspension is still in evaluation stage by me. I've only motocrossed on it a couple times  - and I've have no woods/CC time on the bike.  The WPs I ordered up last year feel just a bit soft in full motocross pace on a rough course- but that might not be a bad thing once I go into the woods and playing Tree Pinball.  

Roberto
Title: The official EP Mikuni jetting survey
Post by: dennis foley on April 26, 2010, 02:08:52 PM
roberto, did you get the package ok.
Title: The official EP Mikuni jetting survey
Post by: tooclose racing on April 26, 2010, 03:54:25 PM
I did, Master Foley.  Apologize for not sending you a note sooner.

Thanks again...