Looking for a new YZ400 Rod kit or Crank

[Simo63]

Okay Yama-philes, where can I get a new rod kit or complete crank for the 77 YZ400D we are rebuilding?

Tried evilbay and other sources but no luck.

Any hints?

Cheers
Simo

[sleepy]

Quite sure I have rebuilt those cranks and used a newer Prox or Hotrod. Can't remember what I used but it you post the rod dimensions I will look it up.

[Simo63]

Quite sure I have rebuilt those cranks and used a newer Prox or Hotrod. Can't remember what I used but it you post the rod dimensions I will look it up.

Will pull the crank apart and get back to you Sleepy. Thanks mate

[motomaniac]

they are 130 mm long . 83 yz 250

[Simo63]

they are 130 mm long . 83 yz 250

Are you saying the 83 YZ250 rod kit is a direct fit moto?

[Rossvickicampbell]

I think that is the rod that also fits the 360.

[sleepy]

The YZ250 83-87 is 130 long , pin 25mm x 60mm, smallend is 23mm , width 20mm both ends and comes with 1mm thrust washer.
The kit will come with a 18mm bore small end bearing as well.

Prox part number 03.2304
Hotrod part number 8106 (Hotrod list it as 83 to 89 yz250)

From memory the YZ250 rods are a little lighter which shouldn't effect the balance to much.

[Simo63]

The YZ250 83-87 is 130 long , pin 25mm x 60mm, smallend is 23mm , width 20mm both ends and comes with 1mm thrust washer.
The kit will come with a 18mm bore small end bearing as well.

Prox part number 03.2304
Hotrod part number 8106 (Hotrod list it as 83 to 89 yz250)

From memory the YZ250 rods are a little lighter which shouldn't effect the balance to much.

Thanks ... will measure it up to make sure it's the right one.  Cheers

[GMC]

Disclaimer...
These lists often have errors in them (especially the early Yam stuff)so do some extra research.

This list links the 400 D with the 360 B

Part # = 431-11651-00-00
Part Description = ROD,CONNECTING
Model Count = 29
DT1 1968 250 DT1 Dual Purpose
DT1B 1969 250 DT1 Dual Purpose
DT1C 1970 250 DT1 Dual Purpose
DT1C-MX 1970 250 DT1MX Dual Purpose
DT1E 1971 250 DT1 Dual Purpose
DT1MX 1971 250 DT1MX Dual Purpose
DT1S 1969 250 DT1S Dual Purpose
DT2 1973 250 DT2 Dual Purpose
DT2MX 1972 250 DT2MX Dual Purpose
DT3 1973 250 DT3 Dual Purpose
DT360A 1974 360 DT360 Dual Purpose
IT400C 1976 400 IT400 Dual-Purpose
IT400D 1977 400 IT400 Dual-Purpose
IT400E 1978 400 IT400 Dual-Purpose
MX250A 1974 250 MX250 Off-Road
RT1 1970 360 RT1 Off-Road
RT1B 1971 360 RT1 Off-Road
RT1M 1970 360 RT1M Off-Road
RT1MX 1971 360 RT1MX Off-Road
RT2 1973 360 RT2 Off-Road
RT2MX 1972 360 RT2MX Off-Road
RT3 1973 360 RT3 Off-Road
YZ250A 1974 250 YZ250 Competition Motocross
YZ250B 1975 250 YZ250 Competition Motocross
YZ360A 1974 360 YZ360 Competition Motocross
YZ360B 1975 360 YZ360 Competition Motocross
YZ400C 1976 400 YZ400 Competition Motocross
YZ400D 1977 400 YZ400 Competition Motocross
YZ400E 1978 400 YZ400 Competition Motocross




Part # = 24Y-11651-01-00
Part Description = ROD,CONNECTING
Model Count = 9
TY250RD 1992 250 TY250R Trials
TY350N 1985 350 TY350 TRIALS Trials
YZ250K 1983 250 YZ250 Competition Motocross
YZ250L 1984 250 YZ250 Competition Motocross
YZ250N 1985 250 YZ250 Competition Motocross
YZ250T 1987 250 YZ250 Competition Motocross
YZ250U 1988 250 YZ250 Competition Motocross
YZ250W 1989 250 YZ250 Competition Motocross
YZ250WRW 1989 250 YZ250WR Competition Motocross

Also listed are other part numbers that may supercede the previous?
But I'm not so sure that the 250 & 490 would have used the same rod???
Part # = 3R5-25161-00-00
Part Description = ROD,CONNECTING
Model Count = 17
IT250K 1982 250 IT250 Dual-Purpose
IT465H 1981 465 IT465 Dual-Purpose
IT465J 1982 465 IT465 Dual-Purpose
IT490K 1983 490 IT490 Dual-Purpose
IT490L 1984 490 IT490 Dual-Purpose
TT600K 1983 600 TT600 Off-Road
TT600L 1984 600 TT600 Off-Road
YZ125L 1984 125 YZ125 Competition Motocross
YZ250H 1981 250 YZ250 Competition Motocross
YZ250J 1982 250 YZ250 Competition Motocross
YZ250K 1983 250 YZ250 Competition Motocross
YZ250L 1984 250 YZ250 Competition Motocross
YZ465G 1980 465 YZ465 Competition Motocross
YZ465H 1981 465 YZ465 Competition Motocross
YZ490J 1982 490 YZ490 Motocross Motocross
YZ490K 1983 490 YZ490 Motocross Motocross
YZ490L 1984 490 YZ490 Motocross Motocross

[Viper666]

Full NOS kit

http://www.ebay.com.au/itm/Yamaha-YZ360-RT1-YZ250-RT3-YZ400-DT360-Connecting-Rod-KIT-Genuine-OEM-NOS-NEW-/201163502656?_trksid=p2054897.l4275


http://www.ebay.com.au/itm/Yamaha-DT250-MX-DT-250-MX250-Rod-Kit-NEW-/171239081129?pt=Motorcycles_Parts_Accessories&hash=item27dea504a9

[ARN]

the rod kit from ebay is made up with a rod of 83 to 86 250 .I can check the pins are the same the top or bottom bearing has a larger or smaller outside diam. they are all available were the 400d 214 rod is not.

[Simo63]

they are 130 mm long . 83 yz 250

Is that end to end?  Because the 400 one is  166.5mm long

[motomaniac]

they are 130 mm long . 83 yz 250

Is that end to end?  Because the 400 one is  166.5mm long

rods are measured centre to centre. no 400- 500 rod is i66 long. cr500s are 144 ish
that's the longest that I know of

[ARN]

http://s1008.photobucket.com/user/Arn5400/media/IMG_2745_zps74de1737.jpg.html?sort=3&o=1

the little end bearing you have to use is for the same as rod of a yz250 83 on. big end is same
I haven't tried this but it  seems to work 

[GMC]

Full NOS kit

http://www.ebay.com.au/itm/Yamaha-YZ360-RT1-YZ250-RT3-YZ400-DT360-Connecting-Rod-KIT-Genuine-OEM-NOS-NEW-/201163502656?_trksid=p2054897.l4275


http://www.ebay.com.au/itm/Yamaha-DT250-MX-DT-250-MX250-Rod-Kit-NEW-/171239081129?pt=Motorcycles_Parts_Accessories&hash=item27dea504a9

The first option is a lot of dollars just to be able to use the letters NOS, especially as it's all unseen.

Option 2 makes a mockery of my first list, he states the rod is 125 long but others here say the rod should be 130 long(Yes Simmo, rods are measured centre to centre), he then says he can do rod kits for the 400 as well so I think a lot of those early year 250's should be a different rod.

I'm now assuming the 250's in this list use the 125 long rods and the others the 130 rods??

Part # = 431-11651-00-00
Part Description = ROD,CONNECTING
Model Count = 29
DT1 1968 250 DT1 Dual Purpose
DT1B 1969 250 DT1 Dual Purpose
DT1C 1970 250 DT1 Dual Purpose
DT1C-MX 1970 250 DT1MX Dual Purpose
DT1E 1971 250 DT1 Dual Purpose
DT1MX 1971 250 DT1MX Dual Purpose
DT1S 1969 250 DT1S Dual Purpose
DT2 1973 250 DT2 Dual Purpose
DT2MX 1972 250 DT2MX Dual Purpose
DT3 1973 250 DT3 Dual Purpose
DT360A 1974 360 DT360 Dual Purpose
IT400C 1976 400 IT400 Dual-Purpose
IT400D 1977 400 IT400 Dual-Purpose
IT400E 1978 400 IT400 Dual-Purpose
MX250A 1974 250 MX250 Off-Road
RT1 1970 360 RT1 Off-Road
RT1B 1971 360 RT1 Off-Road
RT1M 1970 360 RT1M Off-Road
RT1MX 1971 360 RT1MX Off-Road
RT2 1973 360 RT2 Off-Road
RT2MX 1972 360 RT2MX Off-Road
RT3 1973 360 RT3 Off-Road
YZ250A 1974 250 YZ250 Competition Motocross
YZ250B 1975 250 YZ250 Competition Motocross
YZ360A 1974 360 YZ360 Competition Motocross
YZ360B 1975 360 YZ360 Competition Motocross
YZ400C 1976 400 YZ400 Competition Motocross
YZ400D 1977 400 YZ400 Competition Motocross
YZ400E 1978 400 YZ400 Competition Motocross