Andrew Smith Posted December 23, 2018 Report Share Posted December 23, 2018 (edited) Well, I've gone and bought another 'survivor', but this time it's a 1971 Honda CB750 K1, 20,648 miles from new which has been stored since 2015 and needs some TLC to get back to its best. It's been covered in ACF-15 and now I need to remove it - so before I go and just smear it and make it worse by using the wrong products/process, anyone got any experience of getting this stuff off? Cheers, Andrew Edited December 23, 2018 by Andrew Smith Quote Link to post Share on other sites
Hamish Posted December 23, 2018 Report Share Posted December 23, 2018 That ACF seems to have done its job !! nice example there Andrew. H Quote Link to post Share on other sites
openroad Posted December 23, 2018 Report Share Posted December 23, 2018 (edited) You're just a boy George, don't know anything about the product, just like the style. Conrad. Edited December 23, 2018 by openroad Quote Link to post Share on other sites
RogerH Posted December 23, 2018 Report Share Posted December 23, 2018 Hi Andrew, have you got a can of the stuff - the instructions may have a removal technique. Otherwise why not start with something that will not damage the bike. White Spirit works on most wax/oily substances. And the hot soapy water to remove the WS. Roger Quote Link to post Share on other sites
cbxman Posted December 23, 2018 Report Share Posted December 23, 2018 Nice Bike. Always fancied one of those. Is it a runner? It looks well cared for. In the spring enjoy it.... I would use brake cleaner on all the metal parts (as long as you don't want to weld to it later!!). If the paint is two pack, then brake cleaner won't touch it. Not sure about period 'candy' colours though, you might have to try on an inconspicuous place, but I expect it would be OK. I use it for cleaning pretty much everything on a bike. wear gloves though as it like to remove the oil from your hands too! Quote Link to post Share on other sites
AndyR100 Posted December 23, 2018 Report Share Posted December 23, 2018 Top choice Andrew, enjoy your CB Quote Link to post Share on other sites
TRseks Posted December 23, 2018 Report Share Posted December 23, 2018 I used this on bikes before. It says to spray “once a month” or so for bikes in regular use so I guess that is because it does come of with time anyway. When I washed the bike with the normal soap I used and then polished painted surfaces and used metal polish on the chrome/metal parts it came off. Magnus Quote Link to post Share on other sites
Andrew Smith Posted December 23, 2018 Author Report Share Posted December 23, 2018 Hi Folks, Thanks for the advice and tips - hopefully it'll be back on the road in the Spring Andy. Yes Hamish, it's been well cared for. No Roger, haven't got any and can't find the manufacturer's instructions for removal. Jerry, It was ridden into the PO's garage in 2015 and hasn't been started since. It turns over and oil is getting to the camshaft (always a concern on these), but fuel was left in the tank and it's minging! So I drained the old fuel yesterday and will need to treat the surface rust that now lines the tank - ethanol is satin's liquid! The carbs will need checking over too and possibly (likely) the O rings will need replacing and jets blown through. I've searched and found a product called 'Metal Rescue' to cure the tank - anyone used this stuff before, it's not cheap at about £30 for 414ml concentrate (makes a gallon), see: Conrad, Ahh, style is everything (you know that) and if you know the product it helps - luckily, I had a CB750 K1 in the mid-70's, so know them well, see below but don't laugh....... Cheers and Happy Christmas to all. Andrew (aka 'George') Quote Link to post Share on other sites
openroad Posted December 23, 2018 Report Share Posted December 23, 2018 Bloody Hell, I bet all the Redheads Fancied you and the bike. !! You will have fun getting it back on the road, and much less of a task than a TR . Conrad. Quote Link to post Share on other sites
Andrew Smith Posted December 23, 2018 Author Report Share Posted December 23, 2018 5 minutes ago, openroad said: Bloody Hell, I bet all the Redheads Fancied you and the bike. !! You will have fun getting it back on the road, and much less of a task than a TR . Conrad. Yep, sure did mate and this is the redhead I pulled in Feb 77, married in April 81 and we still are - despite my 'fashion sense'...... Quote Link to post Share on other sites
openroad Posted December 23, 2018 Report Share Posted December 23, 2018 A Love Story at Christmas, what could be better.... And as for Fashion, tank tops have been in and out and back in again !! Happy Days, Conrad. Quote Link to post Share on other sites
TorontoTim Posted December 23, 2018 Report Share Posted December 23, 2018 Nice bike!! My first ever bike was a '79 CB750 F2 which is a scary thing to start with! Quote Link to post Share on other sites
ianhoward Posted December 23, 2018 Report Share Posted December 23, 2018 Andrew I have a bottle or three of the stuff - I’ll check the labels tomorrow for ‘instructions’... Merry Christmas!!! Cheers Ian Quote Link to post Share on other sites
Rob Salisbury Posted January 4, 2019 Report Share Posted January 4, 2019 Hi Andy, Never heard of ACF 50 before, (seems to be a bike thing), but on reading up on the stuff it begs the question, why take it off?!! ....... it's a lubricant, so a mild detergent will clean it up and then just refresh all the vulnerable parts of the bike, ... I'm going to get some to spray around the the suspension brackets etc. Cheers Rob Quote Link to post Share on other sites
Andrew Smith Posted January 4, 2019 Author Report Share Posted January 4, 2019 Hi all, Sorry for the lack of reply - I've been busy getting the bike ready for starting and getting the ACF-50 off - Christmas a New Year got in the way a bit! In the end, I just used a WD40 and cleaned and polished up the bits, must say the bikes came up very nicely. Got a few parts to replace with NOS stuff, but looking forward to the Spring. Tim - a mate had a new F2 in 76 and it went like the clappers, as fast my K1 of the day - plus it handled much better, getting very collectible now. After a bit of recommissioning prep, the old girl fired up first time today (first time in 3 years), it spat a lot of **** out the back (including the 20/50 I squirted into the bores) all over Bev's car......so another cleaning job for me tomorrow! Here's a video of the bike firing up, after it warmed up the growl from the exhausts took me straight back to 1977, and for a few minutes I was 19 years old again - then my back started to ache! Oh, and here's a few photos of after the ACF-50 was removed: Cheers, Andrew Quote Link to post Share on other sites
Hamish Posted January 4, 2019 Report Share Posted January 4, 2019 How green were those hondas. Don't even need petrol let alone a petrol tank. Great find in wonderful condition. Quote Link to post Share on other sites
Waldi Posted January 5, 2019 Report Share Posted January 5, 2019 Very nice bike Andrew! I wish I had not seen your video, it triggered me:) Sweet memories.... I have had several Honda 750-ties, K1, K3 and the first 16 valve (was it F1?). Dry sump oil system, nice. With the K3 I ended up in the IC, pneuma thorax (collapsed lung), broken ribs etc. When I came out after a week or so, I could not resist so started fixing the bike. The frame was bent, but not too much other damage, surprisingly. Fixed it myself, and during the repair, every time I had to push hard on the spanner, I felt a broken rib, still hadn’t cured apparently. Wasn’t there a chain tensioner that you could adjust at the front of the engine?Sounds like it may need adjustment. Enjoy the bike, and drive defensive! All the best, Waldi Quote Link to post Share on other sites
Andrew Smith Posted January 5, 2019 Author Report Share Posted January 5, 2019 (edited) 1 hour ago, Waldi said: Very nice bike Andrew! I wish I had not seen your video, it triggered me:) Sweet memories.... I have had several Honda 750-ties, K1, K3 and the first 16 valve (was it F1?). Dry sump oil system, nice. With the K3 I ended up in the IC, pneuma thorax (collapsed lung), broken ribs etc. When I came out after a week or so, I could not resist so started fixing the bike. The frame was bent, but not too much other damage, surprisingly. Fixed it myself, and during the repair, every time I had to push hard on the spanner, I felt a broken rib, still hadn’t cured apparently. Wasn’t there a chain tensioner that you could adjust at the front of the engine?Sounds like it may need adjustment. Enjoy the bike, and drive defensive! All the best, Waldi Hi Waldi, thanks I'm very happy with it. The cam chain is fine as I adjusted it before I fired it up and then again during it's running-up, what you can hear is a mixture of the carbs out of balance and the clutch basket. The first twin cam, four valve CBs were the CB750F and 900F which were released in 1983, the F1 and F2 were the last of the SOHCs. 15 hours ago, Hamish said: How green were those hondas. Don't even need petrol let alone a petrol tank. Great find in wonderful condition. Trouble is Hamish, what you cant see is the trailer for the solar panels..... Cheers, Andrew Edited January 5, 2019 by Andrew Smith Quote Link to post Share on other sites
TorontoTim Posted January 7, 2019 Report Share Posted January 7, 2019 Fab bike, Andrew. I left my F2 in the UK when I moved to Canada (I kept the Norton Atlas) and I kind of wish I hadn't... Maybe a cafe racer version is needed. Hmm. Anyway - great bike. Please post a video or two from the B-roads. Quote Link to post Share on other sites
stillp Posted January 7, 2019 Report Share Posted January 7, 2019 On 12/23/2018 at 9:34 AM, cbxman said: I would use brake cleaner on all the metal parts (as long as you don't want to weld to it later!!). Why would brake cleaner be a problem for welding? Pete Quote Link to post Share on other sites
RogerH Posted January 7, 2019 Report Share Posted January 7, 2019 (edited) Hi Pete, I think they are referring to gas http://www.brewracingframes.com/safety-alert-brake-cleaner--phosgene-gas.html would really be dodgy if welding near the cleaner. If the cleaner has evaporated away then where is the issue. Roger Edited January 7, 2019 by RogerH Quote Link to post Share on other sites
stillp Posted January 7, 2019 Report Share Posted January 7, 2019 There's no tetrachloroethane in any of the cans of brake cleaner on my shelves Roger. Most are IPA-based. As you say though, when it's evaporated, it isn't there any more! Pete Quote Link to post Share on other sites
RogerH Posted January 7, 2019 Report Share Posted January 7, 2019 Hi Pete, I think there is a great deal of mis- information out there TCE is not used too much now. It can have interesting effects on Titanium and other fancy metals. Roger Quote Link to post Share on other sites
cbxman Posted January 7, 2019 Report Share Posted January 7, 2019 There was a thread on here I thought....hmm.. maybe somewhere else, where brake cleaner residue, when heated to welding temperatures released phosgene. This is a link which I have just googled...not read it, but there are many like it if you care to look... http://www.brewracingframes.com/safety-alert-brake-cleaner--phosgene-gas.html Enjoy Jerry Quote Link to post Share on other sites
RogerH Posted January 8, 2019 Report Share Posted January 8, 2019 Hi Jerry, I spotted that one yesterday. Clearly heating any fluid that contains TCE is not a clever things to do. How many home bonfires have had an aerosol of cleaning flud thrown on it - hm Roger Quote Link to post Share on other sites
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