For Sale Lots of parts available 550/650/750.....Maxim and Seca

Hey Seattle, that sure is a nice-looking bike for a "low-budget" resto!

 

Nice Bike.

 

Maybe this will help with your tank emblem search.
I started this barn find in may 24
Rattle can paint and found emblems on eBay 11.00$ only catch is they were stick on,
So I had to drill them out myself.
I can try to search if you would like.
Good luck with your project
Paul

 

Hi @hogfiddles . My xj650 Seca build back is lacking a pair of grab handles - I think they were chrome, just under the seat? Got a pair? It will mean posting to the UK so if you don't want the hassle I will understand.
PM me @minimuttly if you want.

 

I’m not sure if I have extras or not—- I’ll look.

in the meantime, they’re are shared with the xj650 (European).......also, Len carries reproductions, too—-

 

How about a stator coil and cover for 86 XJ700X?

 

I’ll look

 

Nope don’t have any extra handles at the moment.

 

Recently my younger brother crashed my 1983 xj750 maxim into a ditch (he is doing ok), and the entire right side of the bike is destroyed. (Motor is still fine thankfully)
I was wondering if you had any of these items for sale:

• Front Brake Master Cylinder and Lever
• Gas Tank
• Gauge Cluster (Tachometer got completely destroyed, so I'll need an exact replacement)
• Rear Grab Bar (Just the bit covered in the rubber material)

 

With a bit that hard, first check to make sure the frame isn’t bent.

 

Igniter, maybe? For an XJ650RJ?

 

It ended up flipping completely and flattening the handlebar, tank, gauges and grab bar. I haven’t seen any frame damage or warps, so I think the frame is still in good condition, I just can’t ride it until I find some parts

 

Hello. Do you have any windscreens for the Seca 750 touring fairing? Thank you.

 

Thanks for looking

 

No, sorry.
Talk with Len at xj4ever

 

Hi Dave,

This is probably a longshot, I was wondering if you have the 1982 XJ650 maxim engine or similar that I can swap mine into.

Al

 

You want to swap something into the engine? Anything in an ‘82-83 650 maxim engine with fit in another ‘82-‘83 650 maxim engine. Most ‘80-81 parts will, too, but there are some differences.

do you mean “do I have any ‘82-83 engines? “. Yes, probably do.

Let me know what you mean, and I’ll look.

Dfox

 

Other than the cams, what are the differences between a seca and maxim 550 engine, exactly? After 115,000 km, I'm having issues with my seca engine but have a line on a maxim 550 engine, plus I have another 550 seca engine but with damaged heads and damaged cylinders. I read somewhere that the maxim engine has a lower compression ratio, is that true? Are maxim and seca heads the same with the only difference being cams, or is a maxim head, valve train and/or pistons all different to account for the compression ratio difference?

 

NOTE: in the truest hot-rod tradition, people sometimes inquire as to camshaft specifications and interchange. We have compiled the following information for your reading pleasure:

XJ550 Maxim:

Intake Lift: 6.80mm
Exhaust Lift: 6.80mm

Duration: not given

Overlap: not given


XJ550 Seca:

Intake Lift: 7.80mm
Exhaust Lift: 7.10mm

Duration: not given

Overlap: not given
—
a) XJ550 Maxim and Seca cams can be swapped between these engines (but not with any of the 650-up engines). The 550 Seca cams are "hotter", they have more lift, and probably also have increased duration and possibly overlap.
——
Here are all the different stock carb specs (carb model numbers, jet sizes, tune-up info, etc.) consolidated into one happy little group of information, so you can print this out easily when you are working on your particular set.


XJ550 Models:

Years & Models: 1981-83 XJ550 Maxim North American models
Carb Manufacturer: Mikuni
Carb Series: BS28
Carb Model ID: 5K500
Main FUEL Jet Size: #112.5
Pilot FUEL Jet Size: #35
Main AIR Jet Size: #70 (non-removable, in carb throat)
Pilot AIR Jet Size: #165
AIR COMPENSATOR Jet Size: not used.
Starter FUEL Jet Size: #35 (non-replaceable, in float bowl)
Main jet NEEDLE ID: #4GN
Main needle JET Size: #O-8 (the main needle JET is also known as the "power valve" or "emulsion tube").
Fuel Level in float bowls: 2mm +/- 1mm (.08" +/- .039")
Idle RPM's: 1,200 rpms
Vacuum reading at idle: not specified
Vacuum, allowable difference between cylinders, at idle: not given

Although not part of your carbs, your valve clearances should be considered as part of your "intake system", so here are those specs, too. Note that valve clearances should be measured with the engine "cold", meaning 70-degrees Fahrenheit or less:

Valve Clearance Intake: 0.11 - 0.15mm ( = 0.004 - 0.006")
Valve Clearance Exhaust: 0.16 - 0.20mm (= 0.006 - 0.008")


Years & Models: 1981-83 XJ550 Seca North American models
Carb Manufacturer: Mikuni
Carb Series: BS28
Carb Model ID: 4U800
Main FUEL Jet Size: #112.5
Pilot FUEL Jet Size: #35
Main AIR Jet Size: #70 (non-removable, in carb throat)
Pilot AIR Jet Size: #170
AIR COMPENSATOR Jet Size: not used.
Starter FUEL Jet Size: #35 (non-replaceable, in float bowl)
Main jet NEEDLE ID: #4GZ11
Main needle JET Size: #O-8 (the main needle JET is also known as the "power valve" or "emulsion tube").
Fuel Level in float bowls: 2mm +/- 1mm (.08" +/- .039")
Idle RPM's: 1,200 rpms
Vacuum reading at idle: not specified
Vacuum, allowable difference between cylinders, at idle: not given

Although not part of your carbs, your valve clearances should be considered as part of your "intake system", so here are those specs, too. Note that valve clearances should be measured with the engine "cold", meaning 70-degrees Fahrenheit or less:

Valve Clearance Intake: 0.11 - 0.15mm ( = 0.004 - 0.006")
Valve Clearance Exhaust: 0.16 - 0.20mm (= 0.006 - 0.008")


Years & Models: 1981-83 XJ550 Euro models
Carb Manufacturer: Mikuni
Carb Series: BS28
Carb Model ID: 4U900
Main FUEL Jet Size: #112.5
Pilot FUEL Jet Size: #37.5
Main AIR Jet Size: #70 (non-removable, in carb throat)
Pilot AIR Jet Size: #170
AIR COMPENSATOR Jet Size: not used.
Starter FUEL Jet Size: #35 (non-replaceable, in float bowl)
Main jet NEEDLE ID: #4GZ3
Main needle JET Size: #O-8 (the main needle JET is also known as the "power valve" or "emulsion tube").
Fuel Level in float bowls: 2mm +/- 1mm (.08" +/- .039")
Idle RPM's: 1,200 rpms
Vacuum reading at idle: not specified
Vacuum, allowable difference between cylinders, at idle: not given

Although not part of your carbs, your valve clearances should be considered as part of your "intake system", so here are those specs, too. Note that valve clearances should be measured with the engine "cold", meaning 70-degrees Fahrenheit or less:

Valve Clearance Intake: 0.11 - 0.15mm ( = 0.004 - 0.006")
Valve Clearance Exhaust: 0.16 - 0.20mm (= 0.006 - 0.008")


Years & Models: 1984 XJ550L Maxim models
Carb Manufacturer: Mikuni
Carb Series: BS32
Carb Model ID: 5K500
Main FUEL Jet Size: #105 (cylinders #1 & 2)
Main FUEL Jet Size: #102.5 (cylinders #3 & 4)
Pilot FUEL Jet Size: #40
Main AIR Jet Size: #70 (non-removable, in carb throat)
Pilot AIR Jet Size: #155
AIR COMPENSATOR Jet Size: not used.
Starter FUEL Jet Size: #42.5 (non-replaceable, in float bowl)
Main jet NEEDLE ID: #4CP7-3 (cylinder #2)
Main jet NEEDLE ID: #4CP3-3 (cylinders #1, 3, and 4)
Main needle JET Size: #N-8 (the main needle JET is also known as the "power valve" or "emulsion tube").
Fuel Level in float bowls: 3mm +/- 1mm (.118" +/- .039")
Idle RPM's: 1,200 rpms
Vacuum reading at idle: not specified
Vacuum, allowable difference between cylinders, at idle: not given

Although not part of your carbs, your valve clearances should be considered as part of your "intake system", so here are those specs, too. Note that valve clearances should be measured with the engine "cold", meaning 70-degrees Fahrenheit or less:

Valve Clearance Intake: 0.11 - 0.15mm ( = 0.004 - 0.006")
Valve Clearance Exhaust: 0.16 - 0.20mm (= 0.006 - 0.008")

All this and more can be found in The Information Overload Hour

dfox