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Rebuilding the Mutant

PostPosted: Sun Aug 30, 2009 8:31 pm
by dave#3
After the hassles at PI last year I really need to get my Mutant rebuilt into the new frame before November so I decided to skip next Saturday's OP trackday and start the rebuild. It has to be ready for EC on October 10th so I don't have time to fart-arse around either, but while it's a part I'm making a few tasteful modifications too. At this stage it's stripped down to the bare frame with an engine in it and a pile of parts.
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The plan for mods is:
zxr750r (M1) frame with the swingarm pivot located 2.5mm up and 2mm forward
zxr750 J swingarm with zx7r P alloy swingarm sleeve and alloy spacers
zx7r P forks and lower triple clamp. Forks to be re-valved and re-sprung by Terry Hay
zx7r P 6 pot callipers. Bendix race pads
520 chain and sprocket - gearing to be determined
Brembo radial master cylinder
LED warning lights
Push-button starter

Over the last few weeks I've also done:
Quick action throttle
Dynatec coils, 8.8mm HT leads and iridium plugs

I'll post more pics as the Mutant comes together :kuda:

Re: Rebuilding the Mutant

PostPosted: Sun Aug 30, 2009 8:36 pm
by ty
:D cool
If you need a hand (like you don't have enough pit-bitches ;) ) let me know and I'll see if I can get a pass out.

I still need to grab the extra kawonda stickers off you too sometime - left them behind and keep forgetting to mention it.

Re: Rebuilding the Mutant

PostPosted: Sun Aug 30, 2009 8:43 pm
by timmyrocks
very nice work dave, cant wait to see the beast :kuda: :kuda:

Re: Rebuilding the Mutant

PostPosted: Sun Aug 30, 2009 9:00 pm
by hoffy
I cant eblieve KLEEN go back to the 7's ! farkin tree huggers ! :lol:

Re: Rebuilding the Mutant

PostPosted: Sun Aug 30, 2009 9:14 pm
by the kid
Rapist !!!

Re: Rebuilding the Mutant

PostPosted: Sun Aug 30, 2009 11:58 pm
by Nelso
Never noticed the sticker on the frame before - quite ironic with the recent dramas with Victoria's finest. :lol:

Re: Rebuilding the Mutant

PostPosted: Mon Aug 31, 2009 5:07 am
by Wattie
that sticker was its welcome home present.... :lol:

Re: Rebuilding the Mutant

PostPosted: Mon Aug 31, 2009 7:37 am
by MickLC
hoffy wrote:I cant eblieve KLEEN go back to the 7's ! farkin tree huggers ! :lol:



Mate, the yanks had it on their z650's, so it's been around since the 70's at least

Re: Rebuilding the Mutant

PostPosted: Mon Aug 31, 2009 7:57 am
by Glen
Shit Dave you don't muck around. It'll be good to see her all back together

Re: Rebuilding the Mutant

PostPosted: Tue Oct 06, 2009 7:35 pm
by dave#3
Well the Mutant is now back together and looking pretty damned good.

First of all some big thanks - a huge thanks to Robracer for the stickers. Mate, you're a deadset legend and worth your weight in gold. Your RT stickers now have pride of place on the tank as a token of my appreciation.

A big thanks also to greenman43 - you've supplied quite a few of the parts, much of the inspiration and that crucial banjo bolt on a Saturday morning in the middle of a long weekend to get me out of trouble. Cheers.

I also owe a big thanks to Richo for spending most of Monday in the garage with me trying to suss out the suspension - I think we both learned a heap along the way.

Thanks to Greenblood for the loan of some stock swingarm pivots - I think the TKA ones I've got will be OK, but appreciate the loan in case I need them.

Thanks to Sam (formerly of MAW) for all your help with bits and pieces too.

Finally, a huge thanks to Cath for tolerating my endless hours in the garage and surviving as a 'garage widow'.

Oh, and sorry to anybody I've forgotten :oops:

The rebuild started out pretty quickly - by the end of day one the engine was sitting on the floor waiting for re-assembly, and that's pretty much where the easy bits finished. The 900 engine is a *very* tight fit into the braced M1 frame, and for a while I thought I was going to have to take an angle grinder to the gusseting that's welded into the frame. In the end I got the engine in, but it's so tight that I can't take the rocker box off without dropping the engine out completely - makes those pesky 12's seem pretty low maintenance now.

With the engine in I fitted the J model swingarm up using the alloy P model pivot sleeve with the TKA developed swingarm pivots - up 2.5mm and forward 2mm and discovered that at some point in the stroke the swingarm touches the block. As it turns out I think it only touches outside of the regular stroke with the shock fitted so it should be OK.

Once the swingarm was in I could start fitting everything else back up - I took the opportunity to tidy up the wiring even further, removed the ignition switch and replaced it with a regular switch, wired up a neutral light, re-connected the temp gauge. I also added a right-hand switch block from a later 600 as the stock one was integrated with the throttle housing and the throttle was replaced with a quick action jobbie.

Added a BMC air filter (stock only, they don't do a race filter for the old 900s), fabricated up a bracket to mount the dynatech coils behind the headstock (because there just wasn't room to relocate them to the middle of the bike.

On Friday I picked my P model forks up from Terry Hay - they'd been off to be re-hard chromed as the chrome above the dust deal but below the oil seal was damaged (couldn't see it in the pics when I bought them). Terry also modified the forks using caps off a late 90s R1 (or FZ1). With the different caps the fork rods were machined down 20mm and I now have "proper" preload. Along with the new forks I bought the later model 6 pot callipers too, and a set of Bendix race pads (thanks Sam). I've also had a Brembo master cylinder sitting in the garage for a while and decided I'd fit it up along with the rebuild. I've also replaced the bulky rear brake reservoir with a piece of clear tube and fitted a keyless fuel cap. Finally, after a rapid dash around the city on Friday afternoon I got my new gearing sorted too and it's now running a 520 chain with 15/45 gearing.

To top everything off I've glued up the little cracks in the double bubble screen (cause I can't find a non-drilled replacement anywhere), cleaned everything up and finally re-numbered the bike to #3.

I can't wait for Saturday at EC to test it all out, then bring on PI in November.

A few pics
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Brembo bling
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6 pot callipers
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Blingy ride height adjuster
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It looks like a preload adjuster .... and actually works like one
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Re: Rebuilding the Mutant

PostPosted: Tue Oct 06, 2009 7:42 pm
by robracer
Looks horn Dave, nothing like a new old mutant :P & its got numbers too :roll:

Re: Rebuilding the Mutant

PostPosted: Tue Oct 06, 2009 7:43 pm
by timmyrocks
nice going dave!
great effort in the rebuild can wait to see it in the raw :P
:kuda:

Re: Rebuilding the Mutant

PostPosted: Tue Oct 06, 2009 7:48 pm
by ty
very sweet Dave!
You're going to have to ask people how much time they've got when they ask what mods you've made:D
awesome stuff - bet you're happy it's done ;)

Re: Rebuilding the Mutant

PostPosted: Tue Oct 06, 2009 7:49 pm
by dave#3
robracer wrote:Looks horn Dave, nothing like a new old mutant :P & its got numbers too :roll:


Actually, it doesn't! It's a factory supplied M1 frame with no numbers .... but importantly, there's nothing that appears to be tampered with and old mate copper assures me that's OK.

Re: Rebuilding the Mutant

PostPosted: Tue Oct 06, 2009 7:53 pm
by Wattie
make sure you take some kind of ownership papers to PI :lol:

i know i am! :lol:

well done, mate! look like it did before only betterer :kuda: