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#1
General Chatter / Re: Another jetting question -...
Last post by rdsarefun - Today at 06:50:18 AMCarb slides are in correctly with cutout to rear and large angled slot (for idle screw) in contact. Octane question from a response will not make a difference as it is not detonating. My thought is that the pilot circuit is too lean and I made the primary too rich by moving the clip position, adding other complications. I only have a 27.5 and a 30 pilot available, thinking of buying a 35 and 37.5 from John at Economy and putting the needle back to middle position, start with pilot changes and see where it leads.
#2
General Chatter / Re: Another jetting question -...
Last post by 1976RD400C - Today at 06:13:00 AMI would try going the other way with the needle clip and lean it out.
#3
Show Off / Re: New arrival
Last post by 85RZwade - June 01, 2024, 09:38:01 PMQuote from: 2 Smoker on May 27, 2024, 11:17:07 AMNice find...Did you know someone buried an RZ350 in your shopTurned out to be two of 'em in there!
Now I just need some good weather
I think we can all agree: better.
#4
eBay/FB Marketplace/Craigslist watch / Re: the 15K 75 350-b
Last post by RDryan - June 01, 2024, 09:37:59 PMWow,now that is some serious commodity pricing. I guess if you take the seller for their word stating "original and untouched"...talk about blowing some smoke 
BTW thanks again for the help with my 75' RD250 wiring issue, I don't ride her much but took a spin on her after work today and it felt great. Bike's more sorted than ever...A little this and a little that. Total work in progress and looks way more barn fresh original than that bike listing ever will. Still sorting the jetting but plugs look great despite knowing that she runs rich on the main although I did change to smaller jets(155)...Yeah I know that's way too fat... and still gotta ways to go. At least I can focus on that with the wiring/ ignition squared away. I even got a new set of Shinko 712's for her...so stoked. Currently the best hop on and ride bike in my stable.
The 2016 Superduke GT needs it's overdue 18k service that the stealership quoted at 2k
to do as well as my gsxr1000 needs it's overdue 14k service that once again the stealership wants a Arm and leg to do. 
So I guess I need to just roll up my sleeves and teach myself how to check valve clearances. fuckin metric four strokes with loads of bodywork built like legos suck....and I work way too much so I drink too much. 
Don't even get me started on how I live in the wrong part of the country (Ma).
BTW thanks again for the help with my 75' RD250 wiring issue, I don't ride her much but took a spin on her after work today and it felt great. Bike's more sorted than ever...A little this and a little that. Total work in progress and looks way more barn fresh original than that bike listing ever will. Still sorting the jetting but plugs look great despite knowing that she runs rich on the main although I did change to smaller jets(155)...Yeah I know that's way too fat... and still gotta ways to go. At least I can focus on that with the wiring/ ignition squared away. I even got a new set of Shinko 712's for her...so stoked. Currently the best hop on and ride bike in my stable.
The 2016 Superduke GT needs it's overdue 18k service that the stealership quoted at 2k
to do as well as my gsxr1000 needs it's overdue 14k service that once again the stealership wants a Arm and leg to do. So I guess I need to just roll up my sleeves and teach myself how to check valve clearances. fuckin metric four strokes with loads of bodywork built like legos suck....and I work way too much so I drink too much. Don't even get me started on how I live in the wrong part of the country (Ma). #5
eBay/FB Marketplace/Craigslist watch / the 15K 75 350-b
Last post by m in sc - June 01, 2024, 07:20:52 PMhttps://www.facebook.com/share/2RZHb4twJaGa4Sfq/
screen shot for posterity. Is it a super nice example? yes, no doubt. 15k nice, no fucking way.
screen shot for posterity. Is it a super nice example? yes, no doubt. 15k nice, no fucking way.
#6
General Chatter / Re: Another jetting question -...
Last post by m in sc - June 01, 2024, 06:46:16 PMcarb slides in backwards? cutouts to air filter. check that 1st. type of fuel wont cause that kind of issue.
#7
General Chatter / Re: Another jetting question -...
Last post by rdsarefun - June 01, 2024, 06:44:17 PMSunoco pump gas, 93 or 94 octane, depending on station
#8
~THE SPEED SHOP~ / Re: Pipe identification Thread
Last post by RDnuTZ - June 01, 2024, 05:04:03 PMQuote from: rideitfast on March 04, 2024, 06:11:39 PMHere's a pic of them on the bike when I got it.length of silencer section reminds me of Bassani's I had on my RD400 back in the day. IIRC mine actually clamped the header to body of pipe at 1st cone
#9
General Chatter / Re: Another jetting question -...
Last post by RDnuTZ - June 01, 2024, 04:58:49 PMPump gas or race gas (110 Octane, etc.?) Usually, the builder discusses this with user and how they intend to use the motor and mods tailored for the type of fuel expected. Jetting would be expected to change to harmonize with engine changes. Good Luck!
#10
General Chatter / Another jetting question - rou...
Last post by rdsarefun - June 01, 2024, 02:01:26 PMHello Everyone,
I was looking for some additional feedback regarding jetting. I posted on here last year and had my bike sorted after correspondence with individuals on this forum. The bike "was" a 75 RD350 Stock bore with DG pipes, a K&N filter with a new Y boot and a Dyna S ignition. I had the carb currently (set up with Dave F mod) 5DP7 jet needle, 169P0 primary needle jet, 30.0 pilot, with 190 mains and the needle clip in center position (#3), air screw 1 turn out from seated. I also added banshee intakes and a crossover tube, 3/8" thick reed spacers. With the spacers, I did not need to cut the ears off the banshee intake, just cleared. The bike was sorted and ran great, just a little tired at 6600 miles on stock bore. Since then, I acquired another engine from a forum member and sent the top end to Josh at Bill Bune (again a recommendation from a forum member). I had the following done to the stock 64 mm heads and cylinders I acquired for spare engine per Josh below:
"ProX Banshee pistons. A pair of those are $200. The head we would play it safe and recut the Squish + 2 degrees from the top of the ProX pistons, Then mill for more compression. The cylinders would be "trail ported" Meaning safely raise and widen Exhaust / polish, Raise Transfers, Lower intake, and blend everything in" - Josh also cut the pistons to be used in this setup.
Prior to putting the new top end on, I replaced the DG's with a set of SS Dogster expansion chambers. I did not change anything else when i put these on (everything on bike was the same as before), and the performance (seat of pants) was the same as the DG's.
I just got around to putting the new top end on with new setup. I kept the timing the same as before (need to look at notes for exact value but set with an inductive timing light and it ran great with previous setup). My problem now is that when riding, It ran great until roughly 4K rpm, and then sputtered and popped, could not go above this. I changed the needle position to # 4 (was # 3) and it seems as if it is getting too much gas as it just bogs and is not happy, could not even ride it in new clip position as needed to give it throttle just to keep running. I am wondering if I need to up my pilot jet to a 35 or 37.5 with this new machine work done and maybe up the main in addition? Notes from Chuck Q during my last bike (very similar build to where I am now) indicated this pilot jet setting and a 220 main. Wanted to get some feedback from the group. As of now it looks nice, but just a garage queen until I get it sorted. Thanks
I was looking for some additional feedback regarding jetting. I posted on here last year and had my bike sorted after correspondence with individuals on this forum. The bike "was" a 75 RD350 Stock bore with DG pipes, a K&N filter with a new Y boot and a Dyna S ignition. I had the carb currently (set up with Dave F mod) 5DP7 jet needle, 169P0 primary needle jet, 30.0 pilot, with 190 mains and the needle clip in center position (#3), air screw 1 turn out from seated. I also added banshee intakes and a crossover tube, 3/8" thick reed spacers. With the spacers, I did not need to cut the ears off the banshee intake, just cleared. The bike was sorted and ran great, just a little tired at 6600 miles on stock bore. Since then, I acquired another engine from a forum member and sent the top end to Josh at Bill Bune (again a recommendation from a forum member). I had the following done to the stock 64 mm heads and cylinders I acquired for spare engine per Josh below:
"ProX Banshee pistons. A pair of those are $200. The head we would play it safe and recut the Squish + 2 degrees from the top of the ProX pistons, Then mill for more compression. The cylinders would be "trail ported" Meaning safely raise and widen Exhaust / polish, Raise Transfers, Lower intake, and blend everything in" - Josh also cut the pistons to be used in this setup.
Prior to putting the new top end on, I replaced the DG's with a set of SS Dogster expansion chambers. I did not change anything else when i put these on (everything on bike was the same as before), and the performance (seat of pants) was the same as the DG's.
I just got around to putting the new top end on with new setup. I kept the timing the same as before (need to look at notes for exact value but set with an inductive timing light and it ran great with previous setup). My problem now is that when riding, It ran great until roughly 4K rpm, and then sputtered and popped, could not go above this. I changed the needle position to # 4 (was # 3) and it seems as if it is getting too much gas as it just bogs and is not happy, could not even ride it in new clip position as needed to give it throttle just to keep running. I am wondering if I need to up my pilot jet to a 35 or 37.5 with this new machine work done and maybe up the main in addition? Notes from Chuck Q during my last bike (very similar build to where I am now) indicated this pilot jet setting and a 220 main. Wanted to get some feedback from the group. As of now it looks nice, but just a garage queen until I get it sorted. Thanks