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Author Topic: xs650 Sumotrack  (Read 19595 times)

Offline crazypj

  • Posts: 12994
  • Split personality, I fake being smart
Re: xs650 Sumotrack
« Reply #180 on: Jun 24, 2018, 18:33:51 »
Ah, makes sense. Are you going to do aluminium or stainless?  Sometimes it's pretty amazing you can do stuff when you really want to. I havent been in that much hurry last several years  ;D
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Rat_ranger

  • Posts: 287
Re: xs650 Sumotrack
« Reply #181 on: Jun 24, 2018, 19:17:59 »
Probably stainless, the pivot pin is 15-5, the hex piece is 17-4, and the bushing is aluminum bronze, mostly out of the scrap bin from work.  So I'll probably do some cardboard aided design to figure out the lever shape.

Funny part is this winter I'll be pulling the motor again to put an xs1 cam in.  I want to dyno the bike once I have a decent tune in, then dyno again with the xs1 cam to see the difference.
Xs650

Offline crazypj

  • Posts: 12994
  • Split personality, I fake being smart
Re: xs650 Sumotrack
« Reply #182 on: Jun 25, 2018, 16:11:52 »
I'll be happy to know as well, I've had an XS1 cam sitting around a few years now.
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Rat_ranger

  • Posts: 287
Re: xs650 Sumotrack
« Reply #183 on: Jun 29, 2018, 21:52:47 »
Well some progress has been made, the replacement shift fork and 4th sliding gear and now it stays in first when you want it to.  The new starter gear #4 and I no longer get the nasty grinding sound with no cranking.

I put about 15 miles on it testing things out close to the house, still has a bit to go on the tune.  Off idle is a bit wonky, that'll take some tweaking to get right.  But it is getting closer to being able to go out further.  The PMA provides plenty of charge, cruises at 14v even with all the load on it.
Xs650


Offline JustinLonghorn

  • DTT SUPPORTER
  • *
  • Posts: 6449
  • No Purple Hearts, No Blue Ribbons
Re: xs650 Sumotrack
« Reply #185 on: Jul 03, 2018, 08:09:15 »
I can definitely dig it.
I'm going to eat your brains and gain your knowledge.

Into The Sunset, CB750 build

TT500 the Animal

Offline Rat_ranger

  • Posts: 287
Re: xs650 Sumotrack
« Reply #186 on: Jul 03, 2018, 09:29:19 »
Great bike. I came across these on ebay, just a suggestion, I think they are 32mm www.ebay.com/itm/2013-2017-KAWASAKI-NINJA-300-EX300-OEM-MAIN-FUEL-INJECTORS-THROTTLE-BODIES/283018841675?_trkparms=aid%3D444000%26algo%3DSOI.DEFAULT%26ao%3D1%26asc%3D52910%26meid%3Dddd962efb7124a8b80f3b18e5fc7459b%26pid%3D100752%26rk%3D3%26rkt%3D6%26sd%3D253687248166%26itm%3D283018841675&_trksid=p2047675.c100752.m1982. any how good luck with the tunning

 Only problem is that you can't respace them.  If I was going to smaller ones I'd probably pony up the cash for a set of gpz1100 throttle bodies since they are each seperate.  If the spacing matches it would be nice and easy though.  I think that's part of the reason the early 2k gsxr600 ones are popular, easy to respace.

 Thanks Justin!
Xs650

Offline Rat_ranger

  • Posts: 287
Re: xs650 Sumotrack
« Reply #187 on: Jul 06, 2018, 22:09:27 »
Fuel sending unit version 2 is done.  This will allow better flow, with less points to possibly leak pressure.  Fuel pressure regulator is from a kawasaki ninja 650, the cap of the small chamber was machined for it to fit and be held in with a snap ring.  The cap has an o-ring seal with the body.  The nipple on the side is for the fuel pump to connect, and the wires will be terminated with ring terminals and bolts passing through the delring piece that has 3 orings for a seal with the body. 
Xs650

Offline Rat_ranger

  • Posts: 287
Re: xs650 Sumotrack
« Reply #188 on: Jul 08, 2018, 09:08:00 »
Well the new fuel set up was installed in the tank.  Holds fuel pressure better and higher than the old set up.  Took it for a test ride and once I hit 4400rpm above 42% throttle a cylinder was dropping out on me.  Must have been a sticky injector because I swapped it for a spare and suddenly it is way too rich everywhere. 
Xs650

Offline Rat_ranger

  • Posts: 287
Re: xs650 Sumotrack
« Reply #189 on: Jul 08, 2018, 22:46:37 »
Ok, clean injectors in and a very leaned out fuel map finally has it running to redline without dropping a cylinder.  Pulls well all the way to the rev limiter that is set at 7500rpm, I could probably raise that to 8000k since the factory redline is 7500.  But I can finally go on a longer ride and really let autotune do its thing.  It has been an adventure working on the efi with no baseline map to start with.  The good thing is that once I get a nice long datalog I can look at switching to ITB mode.
Xs650