cost to completely rebuild carbs

You need to take apart and inspect everything. Once you do that you can guesstimate what it will cost useing chacal's price list. Personaly I wouldn't cut corners or you'll be into them again soon. Do them once and do them right.

 

where can i find chacal price list ?

 

Oh thats easy. Look at the top of this page. You'll see a XJ engine that says XJ 4 Ever on it. Just click on that and you'll see more than you imagine for his parts lists.

MN

 

My experience has been that you should clean out the carbs, hose the diaphragms down liberally with WD40, button them back up, cap off the fuel feed line, inlet and outlet bores with plastic caps (or get creative with duct tape) and you should be ok for a few years.

 

Len is great, he has had everything I have needed

 

Well, it's probably cheaper to buy 4 new carbs than to replace everything..BUT, everyhing dosn't need to be replaced now does it?
I've had sediment crystalize in the jets, mostly the pilots (primarys) due to sitting, sediment, sand, rust, elecrolisys, and bad gas but the absence of accelerator pumps, good rubber for the slide diaphrams and intake manifold boots you could probably get away with under $200, alot less if the inlet valves are good and the jets aren't plugged.
Beware, the age of the carbs; believe it or not, through the years the float pins tend to distort (bend) and the floats bind.

 

REALLY??? Where? Last set of NOS carbs I saw was $995.00.

I agree with TIME as far as having a good spare rack and a "parts" rack; then you've got the odd float bowl or even carb body if something's truly hosed up on your "good" spare set. And some careful eBay bargain-hunting can turn up some real gems.

The thing with these carbs is this: until you take them apart you won't know what you'll need. Sometimes the rubber/neoprene parts look new even though you know for a fact they're not; sometimes everything in there is all dried out, crumbled or turned to "mush."

 

Oh, certanly I wouldn't think of replacing oem with oem, I could care less about keeping things original the high book on an all original seca 750 is only $1500 usd. So mine won't be for sale as long as it is rideable. If it will run better or go faster with something else, that's where I'd go. I was refering to Keihin 33mm cr's as opposed to replacing every single concievable thing and rebushing the throttle shafts etc.
There are salvage yards that specialize in Yamahas including XJ's though, A&A in Oklahoma City is one. Len has used carbs and parts for sale also.