Anyone have a pdf on the Dave F mod? The link on Economy Cycle's site is dead and I can't seem to find them via a Google search.
i just pdf'd this. I have had this forever. keep in mind, its dated. but the carb mods are still accurate. http://www.2strokeworld.net/forum/index.php?topic=2566.0
:cheerleader:
Quote from: Diablo007 on October 18, 2020, 04:48:31 AM
Anyone have a pdf on the Dave F mod? The link on Economy Cycle's site is dead and I can't seem to find them via a Google search.
I fixed that link and here's some additional instructions / Pictures
https://files.secureserver.net/0sxTWBlyTWlOB6 (https://files.secureserver.net/0sxTWBlyTWlOB6)
John
Thanks guys!
https://www.economycycle.com/shop/yamaha-rd250350400r5ds6ds7-parts/fuel-and-airintake/carburetor-rebuild-kits-parts-related/popular-carb-mod-kit-for-rds/
I recorded when I had to do the mod on a new carb recently and finally just uploaded it. I didn't show the removing/re-installing of the mains/pilots/needle jet/jet needle since those are simple enough to figure out using the PDF. The first time I did it I struggled most with the brass ball (and I still did, as shown in the video!), so I focused on that portion. Please chime in if I've mis-stated anything in the video so I can post a corrected version.
Also re-attaching the PDF
:clap: for those visual learners
There was something about cutting down the little piece that sticks into the carb by 2mm that I dont see in the pdf. I think it was something that Chuck mentioned
Per Dr Q:
QuoteI use 169-P2's and cut the spray shroud 1.7mm.
210's on the mains will about right.
I always start with 35 pilots on Spec II PIPES.
I'm usually also using my TSR/Barlow boost bottle/Banshee manifolds and yz125 reed petals on the stock cages.
So your on the right track. Don't cut the P0's if you use them.
5DP7--2 or 3 is good on a 2.0 airjet.
This was for a ported RD350 w JL pipes. Someone else in the thread mentioned 2.0mm for the RD400.
http://www.2strokeworld.net/forum/index.php?topic=136.msg705#msg705