Xj750d convert to carb

Bought a 82 xj750d during week very clean previous owner disclosed that carbs were put in by owner before him. But does not know what bike cane from

So took it out on highway nice pick up to about 150 kph or 93 mph than sort of hesitates to climb higher due to age and no history did not push harder . Not mechanical minded so are carbs causing it to bottom out at 95 mph?????

 

Carbs are what model? Hitachi, Mikuni
Jetting may be the issue. Or valves haven't been adjusted causing weak cylinder pressure.

 

Mikuni is what can see on the side of the carbs. When had look today after spin

 

Regardless of what carbs are on it, I'd start by making sure that the carbs are in serviceable condition by doing a full tear down and refurb. Figuring out jetting is really difficult if the carbs are in need of service.

 

Just directed him to xj4ever catalog on his other thread. Also asked if they were Hitachi. Damn duplicate threads! If only a moderator were watching...

 

Will get onto it soon as cant spanner myself will bring to my mechanic to refurb the carbs

 

There mikuni carbs Matt I think now po said they were jettef to fit the aftermarket system on bike so hoped all was well and they are up to about the 90mph mark

 

noooooooo!
Steve
YOU CAN Spanner with the best of us (unless there is some physical defect that is preventing you - and if so I am terribly sorry about that...) Read this over and know that if I can do it, you sure can to!
http://xjbikes.com/forums/threads/in-the-church-of-clean.14692/

 

Thanks

Thanks for vote of confidence if could spanner would save me a fortune always wanted to work on my own bikes but never seemed to get it

 

how's the brakes ?

 

Brakes seem good there better than I expected for the age of bike. Be great if was just a sticking break cheap fix

 

Rear brake shoes are known to delaminate on old xjs, causing a complete lock up. Pretty deadly at any speed. Hose life expectancies are 4-5 years. Date of manufacturing is stamped on hose. You do not want to mess about with your life on the line. Either inspect these parts, or have the mechanic check them out.

 

Do you know Matt if there are aftermarket hoses available for my model xj?

 

Check the link in the top right corner. XJ4ever is the spot for EVERYTHING! Catalog is so comprehensive that it can be used as a parts reference. Or start a conversation with member Chacal, he's the guy running the show over there. You will get what you need. When I first joined here, there were so many positive reviews for him/xjforever that I thought the whole forum might be a front for the shop, but no, they're just that good.

 

Lol that great matt thanks very much for the info can do with it. I going go browse there now
L

 

Len has them in stock just got a set for an X model

 

Is that the xj four ever site I had a browse there it could do with a pair. Looking on eBay the prices are really saucy for lines over a 100 gbp

 

Len=Chacal=xj4ever
Len+you=happy xj
happy xj=happy rider
Do the math. You'll get the answer.

 

Same = same.
Start a converstion with Chacal for current availability and prices.

 

What kind tank range do xj750 have people ???

 

I have an 82 Maxim 750 and I usually refill at 120 miles. That is just me being conservative though. I haven't even hit the reserve tank by that point. I'm not sure what size the 750D tank is, but I think it might be smaller than mine.

 

That will vary a lot. Speed limits have a huge impact on fuel mileage. Out here in the land of "what speed limit? I thought that was just a suggestion." I can get anywhere between 35 and 50 MPG (U.S. gallons). I live on the Great Plains, so wind plays a huge role as well.
When the U.S. speed limit was 55 MPH, the XJ750 was getting around 45 MPG in magazine tests.

 

This has pretty much been my experience. 45mpg is average, but I can get north of 50 just highway cruising.

 

I suspect that the original fuel-injection system on the D model would boost fuel milage by at least 5%.

 

Kind of makes you wonder why someone would take the thing that made the 750D unique and slap carbs on it...

 

That thing probably stopped working, and since it's a pretty low-numbers machine, and none of the parts were ever officially exported......
What's a fella gonna do? Fit carbs, or scrap the bike?

 

Hold on...
Our friend did a thing.
XJ750E EFI project

 

Yeah, it's easy for me to say I would put forth the extra effort but....

 

A crazy, difficult, awesome thing!

 

The guy I got it off said the FI went and did not want to scrap bike so got some carbs tbf to clean to scrap and to rare to part out. I would imagine

 

That it you gotta keep on the road some how I would of done exactly the same to clean to scrap

 

Steve....

Do not ever take your bike to a shop or mechanic. They will just take your money.

With the advice from this forum...you will learn to be the best mechanic for your own bike.

A lot of guys on this forum....walk the walk and talk the talk. Heed their advice

 

Time and patience are needed with these bikes.....tasks may not always go as planned or as fast as you would like

But once dialed in....these bikes will surely put a smile on your face as well as pulling your arms out of their sockets when flying down the road.

 

Nice bike already well happy with it only one over on these roads. That what I like the most about it.

 

Probably one of the few left in the entire world's roads!

Which may give you 2nd thoughts about how much road use that you want to give to it.......[/b]

 

Are they that rare I thought there be few thousand over in Japan holy crap I bought it as a all year bike. I only drive bikes so my plan is all weathers

 

19l tank on the D says get 130 + miles to reserve

 

They must be pretty close in size then.

 

The key words are "in Japan." Rare is always relative, and even in Japan there aren't too many.