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Discussion in 'Thumpers' started by CSMonte, Dec 8, 2008.
Where da f**k is your airbox?
So I finally made a carb adapter for my FCR40, now I need some baseline jetting help. Can't find it on the Google Machine, can anyone here get me started? It's a stock 600, normal air filter, exhaust, so if anyone knows where to start, please give me a holler!
I´m waiting on my FCR too and I´ve found a few tidbits here and there on jetting for the XR600/XR650.
This one has pretty good info and will put you on the right track
I have a few more but that one pretty much takes you by the hand. The trial and error of some guys will pretty much eliminate most of your own guessing . If you follow some of the links, you´ll be set
By the way, please share your homemade adaptor for some ideias, if that´s ok
There´s no way I´ll fork out the money asked for a NOS adapter
I'm waiting for FCR too, please do share the dimensions of adaptors you've made! Thumb up for jetting link
Picking up a clean, plated '96 on Sunday if all goes and planned
It has 50/50 tires and no bark busters????? Maybe it will be super clean when I get there
Secret Santa does exist!!!
So my bike is apart at the moment (cleaning and fixing stuff up) and the previous owner gave me an after market choke plate that he never go round to installing so I thought I'd put it in and check the jets while I was there.
Since the choke lever was broken I was told it just took a bit more priming of the engine to get it going and it did seem to start fine. I bought a replacement lever and put the plate in (there was currently no choke plate in it) and noticed that the jets were currently #62 and #165. This seems really rich compared to stock yeah? Especially as it doesn't have an aftermarket pipe.
So my question is: would there be any point using the new choke, since it might just run way too rich and flood the motor?
Also should I decrease the jets so it's not running so rich? The plug was completely coated in carbon and looking at the piston through the sparkplug hole it seemed to be black too.
Extra info: has a 630cc kit but not sure how that would affect jetting that much surely?
That´s the stock jetting used in Europe, here in Portugal they came 62/165 from 91 up
Alright well I think I've decided to turn my 88 XR6 into a bitchen cafe racer. I will have a handful of OEM and aftermarket parts up for grabs if anyone needs them. I have an almost new IMS 4.0g transparent tank that has seen 3 tanks of fuel. I rode the bike 200 miles one weekend about 8 months ago, but since has just sat in the garage waiting for some needed carb work.
I think the parts I won't need any longer will be the OEM seat in fairly good shape, the almost new IMS tank, 88 OEM airbox with 24 years of normal scratches, 88 side covers in fairly good shape but modded for the IMS 4.0g tank and white fenders (front and rear are new 12 months ago but have 2 rides on them). Also the stock OEM headlight and number-plate with a hi/lo bulb conversion, 3 of the 4 rubber fork clamps are good, one is broken. I'm sure I'm forgetting something else, I'll know when I start to break it down in a couple weeks.
I will post an ad in the Flea Market over the next couple weeks with pictures. I just wanted to see if any of you guys need anything first. If so I'd be happy to make a package deal for a great price. I hate Ebay and would rather sell here first.
PM me if anyone wants or needs these parts. Talk soon, Travis
I could use the IMS tank since mine is starting to crack(ethanol perhaps?), but I'm not sure I can spare the funds. I have an old Mustang that's getting new suspension, a disc brake conversion, and an EFI conversion right now. I knew it was expensive to play with cars before, but with the post-crash inflation..... :huh
hey dudes hows it going?
so Im having some issues lately
specifically hard starting and KICKBACK
I have gone back to the stock carb now thinking the flatslide was part of the problem and since I dint have enough jets to tune the pilot circuit I decided to try the stock carb again and once started it feels great, yes the bog is back off idle but I dont care that much aboyut that...
for those of you who have suffered kickback on almost every kick hot or cold how have you fixed it?
1. tight vaves= readjust and loosen them up a bit?
2. pilot jet circuit? lean out or richen up?
3. combination of these fixes or something else I can try?
the bike has become incredibly hard to start meaking me lean towards valves since BOTH carbs exhibit the same symptoms...
oem a little less...but still a nuissance
what say you?
It never hurts to check the valves no?
finally got my cambearings and ignition cover check-hole covers so I started to rebuild the pigs engine.
Its my first time rebuilding the top end so its not moving very fast.
who can tell me what the smallest o-ring is used for?
think the new cam and rockers are breaking in? and tightening up?
Ill do that next...thanks!
that oring..is either .for the petcock or the oil reservoir cap...
my k and s complete rebuild kit included these
lastly it can also be for the two caps on the stator cover holes for valve adjusts...both caps have orings on them
Yeah i checked those 2, but I find it funny they would include a oring for the small statorcover hole and not for the big one..
I'm using a ATHENA top end gasket kit by the way
Re Kick Back.
Should have left the auto decom assy in place. That's what it's in there for.
Cam chain tensioner shaft.
cept it never did it before...so ots either jetting or the valve lash tighetned up on me
didnt do it on the oem cam without assembly either...
how many valve adjusts have you done on your new cam?
...but I wont go into it too deeply here...
I'll make a video later...
7:18-time spent away from the truck
4:32-time spent with a motor running
273 degrees-hotest engine got-(ran at 193 durning the hightailing it back)
6,010-max rev's per minute
121.5 miles-finger numbing, butt burning, bike manuvering, tire ghooshing fun...
Most roads were as steep as can be, but road 27 has 754 semi level curves like this for breaking traction!
Must have passed 7 of those signs urging drivers to
"share the road" with a representation of, #1 a dirt rider, but #2,
a four wheel thingy.
The main goal I had in the planned day's loop was to hit the fiddle creek trail at the apex of our journey.
But by the time we we got there it was time to hightail it back to the truck...
1991 XR600R plated, with a 1992 motor that's never been apart...(but it could use it)
Yep, carrying plenty of "goodies" in them bags I made!
Really liking the MT 21's, there was a lot of slippery stuff...
Ya, she's starting to smoke a lot on decelerations...