CBR600F2 - Another Project!

[Malt_Vinegar]

I decided to look at another project. I was riding my Hornet less and less, due to enjoying the 400 so much I found I was putting it into more regular use, which was not the original plan!

So, I went looking about at CBR600F(x) (of varying eras) and looking at prices, decided an F2/F3 would be the sweet spot to find a cheap project that I could likely fix and make into a reliable "hack", that will replace the Hornet when I sell it on.

I spent a few weeks looking about, and kept going back to an F2 import that had been up for a few weeks (5 weeks) at £1000 on facebook marketplace. It listed as a non-runner, but looked to be in pretty tidy condition.

HOWEVER, there was a spanner in the works. First issue was the location (about an hour away), and it had no MOT, and was apparently not rideable. So, my had recently gained access to a vehicle that I thought would make a perfect bike transport vehicle! An ex disability equipped VW caddy high top thingy, with a split tail, and winch already built in...

Very fortuitously, a guy in my village asked if anyone could move a CBR600F4i a few miles from a garage to his house so he could get it running in the summer! Bingo! The bike is almost identical dimensions to my proposed F2 unit. So we had a go, and Boom:

It fitted like it was made for it! I learnt a few things transporting it the few miles, and the unload/reload was success. Had to make some tweaks to the dropped tail to let it drop further to make using a ram a lot easier, but ultimately, it did a great job, and the game was on.

Arranged to pop over on the Bank Holiday weekend (Sunday) and upon seeing the bike, it would not start (which they thought it would), the manifold was shot, but it had had new manifold stud/bolts done very recently. I also found the disc on the front right was badly cracked/damaged. Managed to get the price down to £650 in the end.

Whipped it into the "Van" and drove it back home. Here she is! Oh, and I love the plate!

Some pics in the transport:

Unloaded!

I added some fresh fuel drained the carb bowls, checked all the connections. Fuel was coming through, and it sounded right, but just would not start! I started to whip the fairings off, and had a good look through, check the timing chain was still hooked up/etc.

I gave up, and wheeled it through to the shed for further examinations, in a nicer environment.

So, what else needs doing? The right disk is knackered, full of cracks/chips/damage. So I have ordered a full new set (even though one side is ok) as it felt like a bad idea to change only 1!

Other side - Passable, but worth changing together I feel:

Fairings off, everything is laid bare, the screen is horrible, broken in the corner, and I have a replacement ordered in clear (STANDARD!):

Manifold with a little bit of the paste that was used to hide the crappy welding/holes fallen into the pipes down below. No good - Ordered a new one!

Little bit of surface rust some of the inner frame sections:

Most of the bike is sort of dusty/watermarked like this:

Should all clean up pretty well.

The Yoshimura exhaust looks in great nick all over, and should bolt up nicely to the new manifold when it turns up!

Top of the manifold is a mess, but the new bolts/studs should really help with the replacement

Rear end looks in pretty good nick too:

Ordered load of consumables and extras to replace the tatty stuff:

Air filter - on order

Ordered new mirrors, as I figured a single replacement might not match up anyway!

I also grabbed a few other little missing bits, some infill vanity panels, oil filter, some oil. I also noticed the fuel tap did not have the filter sock on the top, so ordered a new tap also, with all the pre-filter stuff on it also.

 

[tom_e]

Nice, looking forward to another intresting thread.

Did you actually pay the asking for it though? Seems crazy that my CBR1100XX full 12 month MOT and plenty of new bits went for only £100 more last September.

 

[Malt_Vinegar]

Nooo, I paid £650 Will edit the OP to show that, forgot to add it!

Next up was getting it running! Usual checks on oil/leaks/etc before I started tinkering too much.

In the end I decided to whip out everything around the engine, and have a look at the spark plugs. I checked all the HT leads with a spare plug, and they were all sparking nicely, so I whipped out plug 1, and it was BLACK. It would not spark properly. I even tried cleaning it, but in the end I ran down to Halfords to get a new set as I assumed all the plugs would likely be the same. It looked like Carbon fouled, so maybe the air-filter had got a bit dusty/clogged over the years standing, and caused it to run badly? Still, I dropped 1 plug in, and turned it over, and it spluttered into life on that first cylinder, first press! Awesome!

Whipped out the other 3, swapped them over, and then this happened... I just quickly lobbed my phone onto a shelf to film as I was not sure it was going to work..

Feels like a real result, as I was not sure if there was something wrong with the ECU, or perhaps the timing when I first clapped eyes/ears on it, so it may be up and running faster than I originally planned.

I then ran some fuel into it with a hanging fuel tank, and it ran quite well, spluttering a bit, but I suspect that's just because it's not happy with the manifold hole(s) making it a little lumpy/noisy. So I will stick up a new video when its fully running to hear the Yoshi at full song! It was revving quite well by the end when it was a little warmer (no video as I was killing myself with fumes in the shed!). It seemed to be warming up as expected, and the coolant looks to have been replaced recently going by the colour. So I may be able to have a little run about on it next weekend if I can get all the parts here, and get it booked into the local MOT place.

With all the parts ordered last night, and including the cost of the bike itself, its cost me £1030.51 so far

I could have scrimped a bit more by ordering some of the parts from China, but this is a bike to keep, so spent a little more!

 

[Scythe]

Looks like a result! Should clean up well and make a good bike again, great find.

 

[Steampunk]

Feels like a real result, as I was not sure if there was something wrong with the ECU, or perhaps the timing when I first clapped eyes/ears on it, so it may be up and running faster than I originally planned.

That looks like a result! It basically runs, and all it needs is some tweaking and tuning, some cleaning and a few spares. If nothing major is bent, that is a solid bargain.

 

[CGrieves]

Lovely. Still think they're one of the best bikes of all time- I traded mine in the 1990s for a 1000 Exup, and regretted it for a decade. Then my actual CBR randomly popped up on eBay. I bought it back the moment I saw it.

 

[Malt_Vinegar]

Sooo, some small progress!

Just for the record, this was one of the original plugs!! Urgh - messy

Got the manifold off, and all looking good in here, just waiting on some new crush gaskets for when the new one goes on:

One of the new discs, and you can see the state of the manifold nuts, which I am pretty happy with. They were barely tight either!

Upon removing the exhaust, not quite such good news

I was toying with the idea of repairing it as it was, but I think I have another idea, so this may make a re-appearance in the future...

The manifold was beyond saving, as it basically fell to bits when I removed it:

But fear not, as this turned up

looks a little less knackered!

These little vanity panels above the fairing also arrived with it, second hand

A collection of most of the new/replacement parts so far!

Also, a lithium bike battery I ordered ages ago from china (for testing!) turned up. Not sure its going on this build, was going to try it on the Monkey bike, as its much smaller/lighter than the one on there now

Hoping for the crush washers and the new exhaust to arrive today. Had to go for Black Widow, as the Pipe-Werx I usually use are quoting 4 weeks lead times at the moment... I can never wait that long for shiny metal!! Will be interesting to see how decent it is for the price I paid for it (not a lot!)

Will maybe be able to slot some of this in tonight, and see if its ok for a little run up and down the private road on the weekend.

 

[Malt_Vinegar]

Thanks! Indeed, its not to big a deal. Just a chance for some new shiny stuff

Speaking of which, more stuff arrived:

A new exhaust!

I was planning on getting another Pipe-werx exhaust, but they were quoting 4 week lead times, so decided to give Black Widow a go!
It looks ok!:

Oil drained, new filter fitted:

Thrown on quickly:

The fuel tap pre-filter being missing was bothering me, so i swapped it out.

This is what it is supposed to look like:

Swapped it out, and it looks the same, so no pics once it was fitted

Started to put the filter box back together:

Nice and clean new filter!

Back together!

I then started cleaning up the fairing that was a little damaged, just sanded it down, and prepped for some epoxy:

Going to try using the epoxy to fill the gaps, so I can get a nice smooth surface for the final cover up!

The other one looks mostly ok, just some decal damage:

This little panel was under the cowl, and was snapped/damaged. Its not highly visible, so a simple set of superglue repairs will suffice

Glued up, cleaned:

Back in place:

Then, whilst the epoxy on the side panel was drying, I swapped out the discs. The pads look fine (I suspect they were done relatively recently, miles wise, so leaving them for now

Oh, and a little sneak peak starting after the mini service, and new exhaust loosely in place. Its not running quite right yet, and it had been warmed up a little earlier without the tank in place:

Yes, I am wearing my safety shoes slippers...

 

[Malt_Vinegar]

The under cowl panel is now repaired, and re-installed:

I then quickly tried a couple of different carbon wrap offcuts on the small fairing vanity panels, as the plastic finish on them looked a little tired, and I was unsure how well they would polish up. So will see which one holds up better, then redo them both with a little more effort

I finished up my panel repair too. Quite happy with the result. I sanded back the epoxy, cut out a little circle of the wrap, and trimmed it around the fairing, and used a little finishing tape to clean up the line on the edge of the damaged decal, and provide a little extra highlight to the design. I think it looks passable, given it took about an hour of work, and next to no materials to sort!

I am not too fussed about the other little scuffs and scrapes, as I think this will be a bike I use a lot (hopefully!) and will be a bit of a workhorse

A close up:

The new screen arrived, and it looks great!

Much more standard looking!

I had a think about the tyres, and the tread looked ok, but there was a bit of cracking/perishing around both, so just decided to get new boots:

Couple of new Pirellis that I found at reduced prices with 3 day postage for £125 total, including delivery! Clearly the Mrs was very impressed with me dumping tyres on the floor in the Kitchen

So, wheels off! I whipped off the exhaust end can as the rear axle/spindle required some expert persuasion to extract itself, and I didn't fancy whacking it with the persuasion implement by accident..

I will give the wheels a quick tidy up when they are changed, again, not too worried about how they look, but seems like a good opportunity to give them a once over.

I was toying with the idea of changing them myself, but it looked like a ridiculous amount of effort, or required buying some tools to make it a little easier, and frankly, I want this done sooner rather than later. However, I will be investing in some tools to let me do my own tyres in the future. I mean, I have 4 bikes at the moment, and its bound to pay for itself eventually!!

 

[gezod]

really enjoyed reading through this thread
great progress, looking forward to seeing finished result

 

[Malt_Vinegar]

really enjoyed reading through this thread
great progress, looking forward to seeing finished result

Great to hear! Thanks for reading

Latest progress! New tyres are sorted! I had to pay a little extra though....

Apparently the previous owner was running some sort of tyre gloop in there, and it made a BIG mess of their tyre machinery. I was sceptical at first, but then they showed me the old tyres!

I paid up straight away after seeing that

So, all straight! But seems a shame not to at least clean them up a bit whilst they are off!

So, Started with the rear gave it a little coat of degreaser, and had a go with the brush head on the drill.

Whipped off the sprocket for easier access to the carrier:

The back of the sprocket was messy...

Degreased, dunked in citric acid for a few mins, then hit with the wire brush (both the sprocket and nuts)

half way through the carrier cleaning:

Looking a little better:

Sprocket on!

I then just cleaned up the wheel and put it in place ready to go back in!

I also cleaned the front, and got that ready to go back in too.

Then it was these....

Swapped out the first one, easy:

Then I realised the other grip was cut and re-glued because of this:

I could almost get it to rotate a bit, but it would not undo, it also looked a little, not straight...

Ok, lets drill it out, and see what we have:

I whacked it back into straight, but it would not undo without spinning the centre weight, so I used the little hole in the handlebar to drill a small hole into the weight, and wedged a screwdriver in there:

This let me then force a nut onto the end, which was a little mashed (as you can see, I tried with the mole-grips which just stripped the threads). This wedged on nicely as I was screwing it in, and it started to actually tighten! Success, so I wound it out with a little spanner:

Job done!

Just got to clean the bar up, and replace the split grip, so I ordered in a set of Renthal grips for tomorrow, so should be able to get this thing into the MOT which is booked in for Sat @ 11am!

 

[Drangueos]

I would love to do something like this, too bad I don't have space for it.

 

[Malt_Vinegar]

Build a shed Its to answer to most problems!!

A little more progress this weekend, these forks were a little pitted in places, so I decided to see what I could do to improve the situation before the MOT.

So i went at them with some polish (Silvo!) and took off the easiest stuff quite simply, but there were a few of the pits that would not come off, and I could still feel them with my fingernail as I ran over them, so i used some 1500/2000/2500 grit with some WD40 as lube, and went over any bad areas. This takes down the high points gently, without damaging the finish too much.

They will never look perfect, but it should make the fork seals last a little longer without those high spots whacking through them. The top sections were actually a little easier to sort out:

No major issues here, Silvo took care of almost all of it, only a couple of spots needed a little sandpaper action, and this part is not going through any seals, its largely cosmetic anyway.

Next step is final assembly for the MOT! So it was moved from the shed to the garage in its bits:

Stuck the front fairing/screen back on:

Side fairings ready to go back on:

On:

Off I went for the MOT! And she passed! No advisories

The yellow CBR600F4i that I picked up in the van to test it out, was also there 30 mins after mine to have his MOT done, and he also passed, so good day all round.

Now it's time for further mods/tidying up/etc, but she is now in regular service

 

[Malt_Vinegar]

So, after finding out at the MOT that my bike was likely a US import, given all the reflectors and some possible extra wiring (to be investigated!) I decided to see what I could do to tidy up the rear a little. So, seeing as I have no pillion cover on my insurance, the rear handle was first to go, and the rear side reflectors were mounted in the same place, so they came away too!

starting to look ok! It does leave me with some holes to fill, but I hope to 3dprint something to sort that later

Looking a little cleaner, so we went out on our first fuel fill-up

Its a very confidence inspiring bike. It feels a lot more planted than the 400, and a little more "effortless" in the way it makes progress. I will do some longer runs before I write down many more of my thoughts though.


I really have to do something about these rear indicators. They are HUGE!

more on that later!

I then went around the bike, spotting a few little spots that need attention

I wont cover them all, but little areas like the following:

So, I spent a little time tidying them up with varying methods/tools:

(more to do here, but its a start!)

these were bugging me, so I have them some Kurrust treatment:

In progress:

Looking a little better, will do a better job when I change the brake fluid and take them out fully, but will stop me seeing rust when I look down

Some other little spots to address with Kurrust, just to slow down the process before I can get in there and fix them properly:

Will sort these out properly later, but there is not much rust on the bike in general, other than some light bits around welded joints in the frame, which only a full strip down will really be able to address.

Some other misc parts:

The other side after a cleanup

This was also bugging me:

Little bit of cleaning:

Little more work on the shock remote, and the rusty hose clip screwhead :

Other side of the swingarm tidied up, and a little kurrust on there to slow down the rust there.

I think some of these parts will end up being replaced/reworked/upgraded as I go, but there is not really all that much wrong with it fundamentally for the moment, so I am quite happy with it for now.

I think the carbs could do with a balance, and I might even ask the guys at the local place to stick it on the dyno, and do a little tweaking for me

 

[CGrieves]

Excellent. Pretty sure that paint job is a US version.

If you get it Dynoed, they respond pretty well to a stage 1 Dynojet kit (if you can still get them). You'll get a bit of top end, but much better midrange response. CBR6s are lovely, I really should get mine running again.

 

[Lopéz]

HOLY MASSIVE INDICATORS BATMAN!

Maybe switch our for some universal jobbies?

 

[CGrieves]

I think the indicators are part of the styling- it's an early 90s bike. F2/F3s look a bit bodged if you replace them with mini versions. Even the rear plate/light cluster is proportioned well (compared to modern bikes with silly legislation).

You can always tint the indicator lenses (there's a solution you boil them in) which makes them look a little more integrated.

 

[tom_e]

I'd probably put some clear lenses/silver bulbs on but I've got to agree with @CGrieves it would look a bit weird with modern small ones.

 

[Malt_Vinegar]

I'd probably put some clear lenses/silver bulbs on but I've got to agree with @CGrieves it would look a bit weird with modern small ones.

Some things have happened... Update to follow