(Yamaha 650 cases with different intake ports welded on)

ryno_281

ryno_281

Location
Redding, California
Need some help here. Rebuilding kind of a weird old school specimen right now. 6m6 cases, 61x cylinder, dual intake ports welded on and a custom made intake manifold with dual 42mm sudco cdkII’s. Oh and a genesis head and protec pipe. Weird setup but it rips in my fx-1. Anyways, I need to know what reeds these are or what the bolt pattern looks like it’s off of in order to get new reeds and gaskets. I heard some of these setups ran kawi 750 intakes but this doesn’t. Any help appreciated
 

Attachments

  • 9C560135-78B2-494F-B087-BDD8B995DED6.jpeg
    9C560135-78B2-494F-B087-BDD8B995DED6.jpeg
    166.4 KB · Views: 100
  • BE2E6AA3-4B4A-499A-B206-33368455CEB8.jpeg
    BE2E6AA3-4B4A-499A-B206-33368455CEB8.jpeg
    233.7 KB · Views: 98
  • 96DC0049-AF76-41E5-9EB1-0C512208F418.jpeg
    96DC0049-AF76-41E5-9EB1-0C512208F418.jpeg
    103.2 KB · Views: 91
  • 5F353069-054F-4747-A5C3-A4216B3932F5.jpeg
    5F353069-054F-4747-A5C3-A4216B3932F5.jpeg
    148.5 KB · Views: 112
Andrew1289

Andrew1289

Photos of mine
 

Attachments

  • 27E1564F-D57A-4E4D-A8EF-0A1D799815E0.png
    27E1564F-D57A-4E4D-A8EF-0A1D799815E0.png
    435.4 KB · Views: 110
  • 1E3037E3-2BF5-49EA-BAF9-3A2C178EB590.png
    1E3037E3-2BF5-49EA-BAF9-3A2C178EB590.png
    596.8 KB · Views: 112
  • 45137A39-0A89-4F6A-BB71-7D8A9DF5537B.png
    45137A39-0A89-4F6A-BB71-7D8A9DF5537B.png
    534.2 KB · Views: 117
S

Storbeck

Location
Minnesota
This is a pretty long shot but I have a vague recollection that my yz250 Reed has a bolt pattern similar to that. They were the same from something like 1999-current model
 
ryno_281

ryno_281

Location
Redding, California
This is the ski that I bought with this engine in it, the gal I got it from told me who originally built it but I can’t remember his name. Pretty sure he was based out of central California. I don’t think it was the ski clinic but I could be wrong69819DE4-5CCD-46A0-9266-DDA3623548A0.jpeg
 
SUPERJET-113

SUPERJET-113

GASKETS FOR CHAMP BRAP!
Location
Lake Havasu City, AZ USA
Thats what they did before 62T cases.. 6M6/61X cases with kaw 750 intakes welded on, like Andrew1289 above, but yours only have 1 bolt hole on the bottom of the intake and also the side hole is down low instead of being in the middle. Its not Yam or Kaw, or anything that Ive seen before in 30 years of messing with these things. Weird...

@Storbeck is onto something with the bolt pattern, but to small cages/ports.

@TheBuzzard lol
 
Last edited:
TheBuzzard

TheBuzzard

Location
the jetski grave yard
yea, I got 2 sets of those floating around here someplace. 61x cases with the kawi 750 intake track welded on. pre 62t mod. I cant remember who did this but I know i'm losing my mind. I was just pulling my hair out wondering why this blaster wouldn't pull fuel. I had the lines hooked up backwards. yea that aint the kawi 750 setup like below. maybe polaris. funky bolt pattern for sure. probably works good. looks like keihin carb or i series mikuni if i see the angled carb footprint correctly
 
Last edited:
john zigler

john zigler

Location
wisconsin
This was a popular mod back in the day, like stated before 62t cases. RIVA did these, but used Kaw 750 reeds, intake, etc. Looks like this may be a home done one, obviously the reeds are now Kaw 750. At 1st I also thought it is some kind of Polaris, as the reed cage has a rubber gasket built in like Polaris does, but it Looks like Pro-Pulsion is onto something with the Suzuki Reeds.....
 
MTRHEAD

MTRHEAD

Location
MotorCity
These were eventually outlawed by the ijsba after one cracked/failed during race. There were 2-3 shops offering this service. Trickest ones angled the reeds up more than the 62t design so then side drafts were used (on couches)
 
You must log in or register to reply here.
Top Bottom