Yamaha DT2/RT2 Reed valves

[firko]

Through a fluke I've discovered that Boyesen reeds to suit a Suzuki PE 175 fit the DT2/RT2 Yamaha reed cage.
Now I've become a little more adventurous and would like to know if a Boyesen Rad cage from another bike will fit the RT2 barrel? I'm not so much concerned with the width....in that case the kit to suit the PE will fit. I'm more concerned with the depth of the cage, not wanting it to be any deeper than the stock reed cage. The dimensions of the Yamaha reed cage are......
85 x 67mm mounting flange dimensions, 70 x 50mm mounting hole pitch, 50 x 50 x 35 mm deep internal dimensions.

[vandy010]

just off the top of my head Firko,
the YZ125 reed block from the "YZ125C" on wards till at least the "F" model are all the same as the RT/DT2,3
reed block
more than likely early IT175's as well...
Nathan?

[Freakshow]

WHY DONT YOU WANT THE REEDS ANY CLOSER THAN STOCK ? YOU WANT TO GET THEM AS CLOSE TO THE PISTON FACE AS YOU CAN.......

all the 606 B- reeds i think fit like a zillion bikes so PE wont be the only ones, honda Cr where the same to and a stack of the 74-79 yamahas

( SORRY caps was on at the start and im too lasy to retype.)

[firko]

WHY DONT YOU WANT THE REEDS ANY CLOSER THAN STOCK ?

I didn't say I didn't want them any closer . My worry is a cage from another bike not actually fitting the Yamaha barrel, depth wise. I've already got the carbon reeds fitted, now I'm searching for a Rad valve cage to suit for another tricker barrel down the line. I've got five engines built now so I'm going to experiment a bit.

[4V5]

Yamaha used that reedblock for a few different bikes, add IT125G YZ80H and DT175N to that list...  but for different options for reeds to fit that block the Banshee has the same reeds in a different reedblock

Cheers!
Leslie

[GMC]

This could get a bit long winded, but….
If my thinking is correct, even though there is something different about all these gaskets and reeds, they must be sharing the same bolt pattern. The reed assemblies may be deeper or different in other ways that may or may not suit your needs.
Order at your own peril,


Officially the reed valve is from these 8 models…

Part # = 10V-13610-01-00
Part Description = REED VALVE ASSEMBLY
Model Count = 8
DT2 1973 250 DT2 Dual Purpose
DT3 1973 250 DT3 Dual Purpose
RT2 1973 360 RT2 Off-Road
RT3 1973 360 RT3 Off-Road
YZ125E 1978 125 YZ125 Competition Motocross
YZ125X 1976 125 YZ125X Competition Motocross
YZ80K 1983 80 YZ80 Competition Motocross
YZ80L 1984 80 YZ80 Competition Motocross


And the gasket from these six models…

Part # = 3TT-13621-00-00
Part Description = GASKET,VALVE SEAT
Model Count = 6
DT2 1973 250 DT2 Dual Purpose
DT3 1973 250 DT3 Dual Purpose
RT2 1973 360 RT2 Off-Road
RT3 1973 360 RT3 Off-Road
YZ125X 1976 125 YZ125X Competition Motocross
YZ80K 1983 80 YZ80 Competition Motocross


Missing from that gasket list was the YZ80L & YZ125E
As these 2 models share the same reed assembly as the earlier models then these gaskets may be thinner / thicker or something but they must be sharing the same bolt pattern.
So the gasket for these 2 models also suits the following…..

Part # = 39K-13621-00-00
Part Description = GASKET,VALVE SEAT - Replacement Number = 39K-13621-01-00 *
Model Count = 2
YZ80L 1984 80 YZ80 Competition Motocross
YZ80N 1985 80 YZ80 Competition Motocross
YZ80K 1983 80 YZ80 Competition Motocross


Part # = 10V-13621-00-00
Part Description = GASKET,VALVE SEAT - Replacement Number = 3TT-13621-00-00 *
Model Count = 12
IT175D 1977 175 IT175 Dual-Purpose
IT175E 1978 175 IT175 Dual-Purpose
YZ100E 1978 100 YZ100 Competition Motocross
YZ100F 1979 100 YZ100 Competition Motocross
YZ100G 1980 100 YZ100 Competition Motocross
YZ100H 1981 100 YZ100 Competition Motocross
YZ100K 1983 100 YZ100 Competition Motocross
YZ125E 1978 125 YZ125 Competition Motocross
YZ125F 1979 125 YZ125 Competition Motocross
YZ80G 1980 80 YZ80 Competition Motocross
YZ80H 1981 80 YZ80 Competition Motocross
YZ80J 1982 80 YZ80 Competition Motocross


Therefore the reed assemblies from all these models must have the same bolt pattern as the RT2…

Part # = 2X3-13610-00-00
Part Description = REED VALVE ASSEMBLY
Model Count = 1
YZ125F 1979 125 YZ125 Competition Motocross

Part # = 311-13610-01-00
Part Description = REED VALVE ASSEMBLY - Replacement Number = 1L8-13610-00-00 *
Model Count = 22
DT2MX 1972 250 DT2MX Dual Purpose
IT125G 1980 125 IT125 Dual-Purpose
IT125H 1981 125 IT125 Dual-Purpose
IT175D 1977 175 IT175 Dual-Purpose
IT175E 1978 175 IT175 Dual-Purpose
IT175F 1979 175 IT175 Dual-Purpose
MX125C 1976 125 MX125 Off-Road
RT2MX 1972 360 RT2MX Off-Road
TZ750A 1974 750 TZ750 Road Racer
TZ750D 1977 750 TZ750 Road Racer
YZ100E 1978 100 YZ100 Competition Motocross
YZ100F 1979 100 YZ100 Competition Motocross
YZ100G 1980 100 YZ100 Competition Motocross
YZ100H 1981 100 YZ100 Competition Motocross
YZ100J 1982 100 YZ100 Competition Motocross
YZ100K 1983 100 YZ100 Competition Motocross
YZ125C 1976 125 YZ125 Competition Motocross
YZ125D 1977 125 YZ125 Competition Motocross
YZ175C 1976 175 YZ175 Competition Motocross
YZ80G 1980 80 YZ80 Competition Motocross
YZ80H 1981 80 YZ80 Competition Motocross
YZ80J 1982 80 YZ80 Competition Motocross



The MX125C was in the last reed assembly list but not in the previous gasket list, therefore the gasket for the MX125C also fits…

Part # = 311-13621-01-00
Part Description = GASKET,VALVE SEAT - Replacement Number = 10V-13621-00-00 *
Model Count = 12
DT2MX 1972 250 DT2MX Dual Purpose
IT125G 1980 125 IT125 Dual-Purpose
IT125H 1981 125 IT125 Dual-Purpose
IT175F 1979 175 IT175 Dual-Purpose
MX125C 1976 125 MX125 Off-Road
RT2MX 1972 360 RT2MX Off-Road
TZ750A 1974 750 TZ750 Road Racer
TZ750D 1977 750 TZ750 Road Racer
YZ100J 1982 100 YZ100 Competition Motocross
YZ125C 1976 125 YZ125 Competition Motocross
YZ125D 1977 125 YZ125 Competition Motocross
YZ175C 1976 175 YZ175 Competition Motocross


So out of all that, the YZ80N gasket has shown up but not the reed assembly, so the reed is from…

Part # = 58T-13610-01-00
Part Description = REED VALVE ASSEMBLY
Model Count = 2
YZ80N 1985 80 YZ80 Competition Motocross
YZ80S 1986 80 YZ80 Competition Motocross



Now the YZ80S gasket hasn’t fronted so we check that…

Part # = 1LR-13621-00-00
Part Description = GASKET,VALVE SEAT - Replacement Number = 3JM-13621-00-00 *
Model Count = 10
YFS200A 1990 200 YFS200 BLASTER ATV
YFS200B 1991 200 YFS200 BLASTER ATV
YFS200B-MNH 1991 200 YFS200 BLASTER Maine and New Hampshire ATV
YFS200U 1988 200 YFS200 BLASTER ATV
YFS200W 1989 200 YFS200 BLASTER ATV
YZ80B1 1991 80 YZ80 Competition Motocross
YZ80S 1986 80 YZ80 Competition Motocross
YZ80T 1987 80 YZ80 Competition Motocross
YZ80U 1988 80 YZ80 Competition Motocross
YZ80W 1989 80 YZ80 Competition Motocross



Now we check the reed assembly for the YZ 80W…

Part # = 2HF-13610-01-00
Part Description = REED VALVE
Model Count = 31
YFS200A 1990 200 YFS200 BLASTER ATV
YFS200B 1991 200 YFS200 BLASTER ATV
YFS200B-MNH 1991 200 YFS200 BLASTER Maine and New Hampshire ATV
YFS200D 1992 200 YFS200 BLASTER ATV
YFS200D-MNH 1992 200 YFS200 BLASTER Maine and New Hampshire ATV
YFS200E 1993 200 YFS200 BLASTER ATV
YFS200EMNH 1993 200 YFS200 BLASTER Maine and New Hampshire ATV
YFS200F 1994 200 YFS200 BLASTER ATV
YFS200FMNH 1994 200 YFS200 BLASTER Maine and New Hampshire ATV
YFS200G 1995 200 YFS200 BLASTER ATV
YFS200G-MNH 1995 200 YFS200 BLASTER Maine and New Hampshire ATV
YFS200H 1996 200 YFS200 BLASTER ATV
YFS200H-MNH 1996 200 YFS200 BLASTER Maine and New Hampshire ATV
YFS200J 1997 200 YFS200 BLASTER ATV
YFS200J-MNH 1997 200 YFS200 BLASTER Maine and New Hampshire ATV
YFS200K 1998 200 YFS200 BLASTER ATV
YFS200K-R 1998 200 YFS200 BLASTER - R ATV
YFS200L 1999 200 YFS200 BLASTER ATV
YFS200M 2000 200 YFS200 BLASTER ATV
YFS200M-L 2000 200 YFS200 BLASTER - L ATV
YFS200N 2001 200 YFS200 BLASTER ATV
YFS200P 2002 200 YFS200 BLASTER ATV
YFS200R 2003 200 YFS200 BLASTER ATV
YFS200S 2004 200 YFS200 BLASTER ATV
YFS200T 2005 200 YFS200 BLASTER ATV
YFS200U 1988 200 YFS200 BLASTER ATV
YFS200W 1989 200 YFS200 BLASTER ATV
YZ80A1 1990 80 YZ80 Competition Motocross
YZ80B1 1991 80 YZ80 Competition Motocross
YZ80D1 1992 80 YZ80 Competition Motocross
YZ80W 1989 80 YZ80 Competition Motocross


And so on and so on and so on

[Davey Crocket]

You need to get into town more often Geoff and actually talk face to face with a human......your turning into a computer geek!!!....you need to socialise with humans more.....first you cleaned the garage and found a concrete floor, now this, whats next or what havent you told us?.......we might have to send Alison over there to keep an eye on you.

[GMC]

11001110100110010110011100010010

[Davey Crocket]

You havent just killed your wife have you?