New project...non-zxr

Here's a chance to show off your zxr400, so get them digital cameras out and show us some piccies.Rebuilding your bike or modding it then let everyone in on it.

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banner001
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Re: New project...non-zxr

Post by banner001 »

masterofinsanity wrote:matt black will show every scratch/mark i went for satin black on mine see here
the frame will need a good bit of prep before it goes to the powdercoaters, gonna make sure its pristing before it goes...not like im in a rush for it, so i can do a proper job.

there are a few frame mounting points to remove (where the fairings joined), one of the engine mounting allen bolts has been ground flush and has seized slightly so that area will need sanding smooth...all the current frame scratches will be 240/400 grit sanded back, once the engine is out the frame will be a lot lighter so i can then remove the swingarm and start to work on that as well :D

mounting bolt
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current state of bike (am removing the electrics for a full re-wire)
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thankfully its not a complicated loom
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i have made sure to label everything and take photos of it all!
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UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

that engine bolt...damn!

drilled and easy-out...nothing.
pack it with JB weld and ram a screw in there...nothing
JB weld outside and stick a nut on...nothing

in the end a forum member said its fairly common, hacksaw through the bolt just behind the frame and weld a nut on after and do it that way, if not it will be properly drilled and tapped later.

bike has shed more weight
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back end is looking pretty bare now, now to decide on tail ends...will be a modern 600 or 1000cc bikes tail end going on, something small sleek and pointy methinks

Image

gonna drop the engine today with the help of my wife and a mate of ours...thinking its gonna be ~110kg?

then i can start the full engine stripdown on one bench, and start attacking the electronics on the other :D
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

engine is out! needed to be tipped forwards a fair bit before it eased its way out (was a bit gummed-in at the back), is now on my bench ready to be stripped down
Image

:D
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

engine stripdown is commencing :D

my socket has just snapped (literally) so thats gone in the bin, am awaiting a breaker bar delivery, been taking external bits off the engine
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sorry for shaky picture...but it was damn cold last night at 1am :D top of the engine, will take the cylinder head off when my breaker bar and 6mm long reach allen socket gets here...
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the timing cover was held in by 3 head-stripped screws...manages to get 2 out, the 3rd has snapped...so that will require extracting at some point, have been removing the alternator and reg/reg (one unit), the starter motor, oil pressure switch and the neutral sensor...
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more in a few days, might spend tomorrow cleaning up the usable piping for the cooling system, its bad on the outside, worse on the inside :D
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

still working on the engine, have put the tank on the frame to check a few distances/sizes etc...

am gonna make a custom mount for the front...current one is all open and well ugly, will make a fiberglass cover and reposition the mounts wider.
Image

might try to drop the tan a few mm to close this gap, if not i will fit rubber mounts so its tight to the frame.
Image
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

clutch will need new plates and springs...clutch friction plate minimum thickness = 2.8mm, mine = 2.1mm

spring minimum free length = 54mm, mine = 48mm...will stick new steels on as well, clutch hub seems fine.
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

vivian has taken his suspenders off...
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am 98% of the way through the main stripdown, just gotta remove the headstock and swingarm pivot bolt...then its all done...just hope i can put the damn thing together again now haha!
Image

have pulled off most of the dirt, shouldnt take too long to get it all cleaned up
Image
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by masterofinsanity »

whats with the loo roll holder in the garage? lol
Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
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Re: New project...non-zxr

Post by banner001 »

haha, its the top of the spade we bought 5 months ago and have still to unwrap :D

its a protective cover for the handle :smt019
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

cylinder head, no idea when/if it was ever last taken apart, might have done +46,000 miles and its in pretty good condition considering some ive seen...
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cant remember what its called, but these are the pistons in the barrels.
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probably the worst bit of the head
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and the best
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worst piston crown
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best crown
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5 minutes cleaning to the "worst piston crown" gave me...
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...which is encouraging

am borrowing a valve spring compressor on wednesday or friday, will get my mate to bring his impact gun and we can take out 3 slightly-mashed, very seized, pozidrive screws so i can split the crankcases over the next week or so...
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

Pistons are removed from the top of the conrods, and i only lost 1 of the metal split ring things! Will replace with new anyways. Everything looking good, no nasty lumps of metal anywhere, some small "ribbon" bits of metal, but it almost looks like bits of the very edge of a gasket, its very small and very thin so no big deal. nothing looks damaged/scored/moves too much etc...so thats looking up.

the only problem so far has been that the exhaust camshaft feels very tight in its housing on the LHS of the engine, part of it slots into a groove (i think its an oil passageway or some kind) and i think thats the bit thats tight, inlet is nice and spun freely, but the exhaust camshaft did feel very tight when i had to remove it, might have to look into that further...might be fitting new cams anyways...we will see, stock will go back on initially.

been hammering the sh1t out of the swingarm, manual shows a guy easily sliding it out of its housing...not mine, the easiest bit was the 130Nm nut! This is what greeted me on half of the swingarm
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Completely rusted in place, no wonder it took 30 minutes of braying it with a rubber mallet...the inner cylinder was not much better either, no grease in sight, what was in sight was more rust, yay!
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arent needle rollers supposed to roll?...will get them out at a later date
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gotta get this cover off of the end of the camshaft, remove the clutch, then i can crack the cases and remove all the rest of the inside, ready for cleaning, sand-blasting, more cleaning, measuring/tolerance checking and reassembly...fun fun fun :D
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by banner001 »

been cleaning the frame and the swingarm. a quick taster of the swingarm, still needs at least 1 more clean, but damn its a lot better than before!!
Image

im gonna go for this tail unit, unsure as to whether to go for a tank pad (as in picture), or get a seat made for me, the latter would be comfier, but the former is the easier option...
Image
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
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Re: New project...non-zxr

Post by wes »

I'd be very tempted to nitromors off the laquer and polish the alloy frame and swingarm.
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Re: New project...non-zxr

Post by banner001 »

nope, black powdercoat frame and swingarm to go with the orange paintwork :D
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003
Leey
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Re: New project...non-zxr

Post by Leey »

banner001 wrote:nope, black powdercoat frame and swingarm to go with the orange paintwork :D
Ace choice looking forward to seeing this finished.
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