packs for camping

DSN_KLR650
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Ted Palmer
Posts: 1068
Joined: Sat Apr 08, 2000 7:09 am

[dsn_klr650] power loss follow up

Post by Ted Palmer » Sun Jun 18, 2000 6:19 am

Bryan Loehr wrote: [...]
> I've modified the airbox with holes > drilled along the top, therefore, a HUGE amount of air was slamming into > the carb, especially with all the honking on I have to do to try to keep up > with the guys I ride with. It's my theory that the high air volume > overstressed the diaphragm. Does that sound right?
Not to me. If you had a huge amount of air slamming into the carby, or at least more huge than usual, then you should have been making hugely more power. I've changed one diaphragm so far and the replacement is still working ok. Some fail and some don't although I suspect that more than a couple of backfires through the carby won't do the longevity any good.
> The new diaphragm assembly I have on order cost $116. (Not a typo--one > hundred sixteen dollars!) A pure case of "Sh*t happens."
Yeah, not cheap in any currency. Mister_T

Kurt Simpson
Posts: 907
Joined: Thu Apr 06, 2000 3:10 pm

[dsn_klr650] power loss follow up

Post by Kurt Simpson » Sun Jun 18, 2000 9:59 am

> A week or so ago I posted a request for advice regarding a sudden power > loss on my 99 KLR. With about 800 miles on a Dynojet/Supertrapp/K&N > upgrade, it all of a sudden wouldn't rev past 5K. I discovered the cause > to be a small tear in the carb diaphragm.
Bryan, I'm far from a carb expert...but I would suspect some other cause for the tear. BTW, while I tend to exactly as you are with replacing the diaphragm we have had listers repair the diaphragm with some sort of vinyl repair product (again, probably in the archives) and it has held up perfectly. You might try repairing it and keeping the new diaphragm on hand in case of a failure. Regards, Kurt

Mark
Posts: 653
Joined: Tue Dec 21, 2010 8:03 pm

[dsn_klr650] power loss follow up

Post by Mark » Sun Jun 18, 2000 10:33 am

At 8:40 PM -0700 6/17/2000, Bryan Loehr wrote:
> It's my theory that the high air volume >overstressed the diaphragm. Does that sound right?
If the tear was near the edge, it's more likely that the diaphragm was damaged upon reassembly after installing the DynaJet needle if the diaphragm didn't seat properly (twisted or creased) in the groove. Mark B2 A2

Skip Faulkner
Posts: 103
Joined: Fri Apr 14, 2000 9:08 am

[dsn_klr650] power loss follow up

Post by Skip Faulkner » Wed Jul 05, 2000 9:10 pm

> Listers, > > A week or so ago I posted a request for advice regarding a sudden power > loss on my 99 KLR. With about 800 miles on a Dynojet/Supertrapp/K&N > upgrade, it all of a sudden wouldn't rev past 5K. I discovered the cause > to be a small tear in the carb diaphragm.
............................>snip > overstressed the diaphragm. Does that sound right? >
..........................>snip > Bryan Loehr
Bryan, I`m going over some backlogged posts and wanted to respond. I doubt that intake volume through the carb caused the tear. More than likely it was pinched when you installed the jet kit. The carb cover is very tricky to install without pinching the diaphragm. If one little edge is caught, it will eventually tear. I know from experience. Skip