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Banshee reed cages fit RD350B, RD400D?

Started by RDnuTZ, January 13, 2025, 12:08:44 PM

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RDnuTZ

If yes, are they direct bolt on or need modification?
1987 TZR250R Restricted Japan Domestic market bike (Project)
1977 RD400 (Project)
1974 RD350 (2) (Projects)
1973 RD250 (Project)
2022 Beta 300 X-Trainer, Yamaha Vintage MX, YZ (18)

IR8D8R

Not plug and play. RDLC or Banshee. Not RZ. I think YZ 85 will work too with pocket enlarged. People do it with adding epoxy or welding between the fins to prevent breakthrough and grinding the reed pocket.
 Consensus seems to be V-Force 3 or 4 for Suzuki RM 100 fit the pocket and work fine, but the bolt holes need enlarging to fit the RD bolt pattern. IIRC opening the bolt holes to 9mm allowed the stock pattern to fit. Don't recall if this required a spacer but it's a good idea anyway. 10mm thick or smaller between the head and reed block.

Mark did a nice writeup on this mod a while back. Search the site.

IR8D8R

RDnuTZ

Thanks for the reply. I'm just getting back into RD projects I started 25+ years ago. Basically starting with builders that I want to put back together and get on the road. Only planning to use stock or bolt on items. If I live long enough I'll revisit them later to make them pretty and faster  :burnout:  I had a large stash of NOS/OEM+ items tucked away in storage with the bikes, but that seems to have disappeared when 1 of my bikes got stolen out of the unit. I got the bike back but lost a lot of other stuff that was easy to grab and go  :sad:
1987 TZR250R Restricted Japan Domestic market bike (Project)
1977 RD400 (Project)
1974 RD350 (2) (Projects)
1973 RD250 (Project)
2022 Beta 300 X-Trainer, Yamaha Vintage MX, YZ (18)

m in sc

#3
lc uses same as aicooled (SIZE WISE). I run 34mm flatslides though these, plenty of reed tip area.  IMHO Until you get north of 60 HP these will do just fine.

https://www.2strokeworld.net/forum/index.php?topic=6355.0

RDnuTZ

My used cages sets are all crap. I was offered a discounted set of these I was watching on eBay, so thought if they would fit with no modification, I would give them a try. Would have saved me work with getting both the new cages + carbon reeds. Oh well.

Vito's billet aluminum BULLSEYE REED VALVE CAGES + carbon flex reeds BANSHEE

https://www.ebay.com/itm/272517567486
1987 TZR250R Restricted Japan Domestic market bike (Project)
1977 RD400 (Project)
1974 RD350 (2) (Projects)
1973 RD250 (Project)
2022 Beta 300 X-Trainer, Yamaha Vintage MX, YZ (18)

1976RD400C

Here's the specs of some Yamaha reeds. The Banshees are even wider than RZ.

'76 RD400 green  '76 RD400 red   '84 RZ350

SoCal250

Ed Erlenbach, who knows way more about Yamaha engines and making power than most of us here, has some good info that's still available on his old site: http://erlenbachracing.co/reedcages%20mods.htm
75 Yamaha RD125B   75 Yamaha RD125B (project)
75 Yamaha RD250B   75 Yamaha RD200B (project)
73 Yamaha RD350     77 Yamaha RD400D   79 Yamaha RD400F  
91 Yamaha TZR250R  89 Yamaha FZR400   05 Yamaha FZ6   
05 Yamaha XT225TC  82 Honda MB5  02 Aprilia RS250 Cup (sold)

rodneya

Quote from: RDnuTZ on January 13, 2025, 06:58:37 PMMy used cages sets are all crap. I was offered a discounted set of these I was watching on eBay, so thought if they would fit with no modification, I would give them a try. Would have saved me work with getting both the new cages + carbon reeds. Oh well.

Vito's billet aluminum BULLSEYE REED VALVE CAGES + carbon flex reeds BANSHEE

https://www.ebay.com/itm/272517567486
Do yourself a favour and do not buy Vitos parts. 

1976RD400C

RZ reeds with a spacer and TDR single petals in my RD400.
'76 RD400 green  '76 RD400 red   '84 RZ350

RDnuTZ

1987 TZR250R Restricted Japan Domestic market bike (Project)
1977 RD400 (Project)
1974 RD350 (2) (Projects)
1973 RD250 (Project)
2022 Beta 300 X-Trainer, Yamaha Vintage MX, YZ (18)

RDnuTZ

Quote from: rodneya on January 13, 2025, 10:49:27 PM
Quote from: RDnuTZ on January 13, 2025, 06:58:37 PMMy used cages sets are all crap. I was offered a discounted set of these I was watching on eBay, so thought if they would fit with no modification, I would give them a try. Would have saved me work with getting both the new cages + carbon reeds. Oh well.

Vito's billet aluminum BULLSEYE REED VALVE CAGES + carbon flex reeds BANSHEE

https://www.ebay.com/itm/272517567486
Do yourself a favour and do not buy Vitos parts. 
any particular reason you say this? Seems to be some people here happy with their updated RD cranks. I'm passing on the cages, but thinking to buy 1 of the Vito cranks after I get a couple runners on the road with HPR cranks I bought.
1987 TZR250R Restricted Japan Domestic market bike (Project)
1977 RD400 (Project)
1974 RD350 (2) (Projects)
1973 RD250 (Project)
2022 Beta 300 X-Trainer, Yamaha Vintage MX, YZ (18)

sav0r (CL MotoTech)

My Vito's crank is fine, or at least it's made it like 7 years without unplanned disassembly. Not sure I'd want one in my race bike...
www.chrislivengood.net - for my projects and musings.

m in sc


rodneya

Quote from: RDnuTZ on January 14, 2025, 10:27:21 AM
Quote from: rodneya on January 13, 2025, 10:49:27 PM
Quote from: RDnuTZ on January 13, 2025, 06:58:37 PMMy used cages sets are all crap. I was offered a discounted set of these I was watching on eBay, so thought if they would fit with no modification, I would give them a try. Would have saved me work with getting both the new cages + carbon reeds. Oh well.

Vito's billet aluminum BULLSEYE REED VALVE CAGES + carbon flex reeds BANSHEE

https://www.ebay.com/itm/272517567486
Do yourself a favour and do not buy Vitos parts. 
any particular reason you say this? Seems to be some people here happy with their updated RD cranks. I'm passing on the cages, but thinking to buy 1 of the Vito cranks after I get a couple runners on the road with HPR cranks I bought.

The RD cranks may be the only thing he sells that are decent quality. The Banshee cranks do not have a good reputation and a lot of other stuff they sell are very poor quality, same as companies like BPR