Fazer Owners Club - Unofficial
General => General => Topic started by: fazersharp on 28 March 2017, 10:55:33 pm
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Fighting a battle with a couple of small holes in the collector box of my headers, the last time I did them was last year with rustoleum high temp after a member on here had good results with, I did prep the area very well and filled with gun gum but the rust has come back along with pushing off the filler.
Can anyone recommend a rust killer- are they any good or not.
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Would it be worth cutting that section out and having a plate welded on. The problem that when metal rusts to holes metal around it is already badly rusted and you'll be chasing it forever. sorry I don't want to sound like I'm trying to teach my grandmother to suck eggs.
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Fighting a battle with a couple of small holes in the collector box of my headers, the last time I did them was last year with rustoleum high temp after a member on here had good results with, I did prep the area very well and filled with gun gum but the rust has come back along with pushing off the filler.
Can anyone recommend a rust killer- are they any good or not.
A man who wont ride in the rain suffering with rust...........................The irony lol :rollin :rollin :rollin :rollin :rollin
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A friend had very similar on a foxeye and took the small holes back to clean metal then used chemical metal to fill the holes initially to just get it through mot until he could afford new headers but it's still going strong 2 years on, could be an alternative to welding a plate on and more permanent than gun gum
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Yes I am a granma sucking eggs but I am still open to focer wisdom, especially if I have always sucked eggs the same way.
That's right no rain for me but I might ride through wet damp patches and I think it also rots from the inside.
Chem metal then, sounds like I will give that a try instead of gun gum
Here is my holes last year after I had cleaned it all off with a wire wheel on a drill being on a curve how easy it it to weld a piece over it and how much would that cost over a new exhaust
(http://foc-u.co.uk/index.php?action=dlattach;topic=19727.0;attach=24122;image)
Job when done last year
(http://foc-u.co.uk/index.php?action=dlattach;topic=19727.0;attach=24141;image)
(http://foc-u.co.uk/index.php?action=dlattach;topic=19727.0;attach=24139;image)
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Brazing a steel patch on might be a more robust solution. It will cope better with high temperatures then polymer filler and is easier than welding which requires a decent thickness to the underlying metal.
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I think I will give chem metal a go, but doing a local search I have found this http://www.eurocarparts.com/ecp/p/car-accessories/car-maintenance-accessories/car-adhesives-tapes-sealants/glue/?554771310&&cc5_851 (http://www.eurocarparts.com/ecp/p/car-accessories/car-maintenance-accessories/car-adhesives-tapes-sealants/glue/?554771310&&cc5_851) is it a replacement or just something different
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“Max temperature 315°C (<100 continuous)” according to the manufacturers.
The pipes there will be over 100ºC (though under 350º).. I wonder how long qualifies as continuous?
Still, it can be done in-situ so if it does fail at least it won’t be effort wasted.
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“Max temperature 315°C (<100 continuous)” according to the manufacturers.
The pipes there will be over 100ºC (though under 350º).. I wonder how long qualifies as continuous?
Still, it can be done in-situ so if it does fail at least it won’t be effort wasted.
I used and still have some gun gum left but half of that has fell off, as you can see I did prep the area well. I dont mind giving chem metal a try and then I can use whats left over on other jobs
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Yes I am a granma sucking eggs but I am still open to focer wisdom, especially if I have always sucked eggs the same way.
That's right no rain for me but I might ride through wet damp patches and I think it also rots from the inside.
Chem metal then, sounds like I will give that a try instead of gun gum
Here is my holes last year after I had cleaned it all off with a wire wheel on a drill being on a curve how easy it it to weld a piece over it and how much would that cost over a new exhaust
([url]http://foc-u.co.uk/index.php?action=dlattach;topic=19727.0;attach=24122;image[/url])
Job when done last year
([url]http://foc-u.co.uk/index.php?action=dlattach;topic=19727.0;attach=24141;image[/url])
([url]http://foc-u.co.uk/index.php?action=dlattach;topic=19727.0;attach=24139;image[/url])
More water will pass through the inside of an exhaust than it will ever see on the outside, thats why short journeys are bad for your exhaust system. Did mech engineering at college and seem to remember a figure of something stupid like 8 gallons of water vapour to 1 gallon of fuel.
Have you considered removing the balance pipes and have the holes patched up, cant imagine it making that much difference to the running of the bike and should prolong the life of those pipes
I know a good welder here in Grantham (not a million miles from you) and he's not expensive
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Yeh I think ---- well it must be because I don't do rain, that most of the rot is from inside, but there is rust on the outside too giving some pitting. The balance tubes are ok, its just the collector part for now.
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Don't use rust inhibiter it will react with the paint, I know as that is what happened to mine using the Granville engine black paint.
Find a decent welder fabricator to weld a plate over, I've had that done to mine in that exact area they'll just have to mold the plate to shape.
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If the down pipes are still good and strong I would look at cutting out the balance tubes and welding in a new bit of tube.
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Don't use rust inhibiter it will react with the paint, I know as that is what happened to mine using the Granville engine black paint.
Good tip
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If the down pipes are still good and strong I would look at cutting out the balance tubes and welding in a new bit of tube.
The balance tubes are fine - its the collector area underneath
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Here are some photos from tonight, one hole seems to still be taken care of by the gun gum but I doubt when I get going with the wire brush it stay there and will drop off.
I have got myself some chem metal to fill it.
Also photo showing some rust spots coming through the paint so I don't think the Rustolum was all that good. Open to offers on a better one
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I'd still go with welding a patch over it, slap on some paint and don't look at it until it starts blowing again
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Like i said before take them off give them to a decent welder fabricator and he'll weld a formed patch over it. I did mine at least 3 years ago and no problems just repaint every no and again.
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I am actually interested in how well the chem metal is going to work and for how long, if it drops off then I will get it welded properly.
I have tried Granvile cylinder black and last time Rustolums (what ever ) and each time it still flakes off after 12 months so am willing to try another
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For exhaust manifold paint have a look at Simoniz Sperex VHT ( very high temperature). Have used this on car manifolds very successfully.
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For exhaust manifold paint have a look at Simoniz Sperex VHT ( very high temperature). Have used this on car manifolds very successfully.
Is it this one http://www.eurocarparts.com/ecp/p/car-accessories/car-maintenance-accessories/paints-and-primers/high-temp-paint/?549772211&0&cc5_161 (http://www.eurocarparts.com/ecp/p/car-accessories/car-maintenance-accessories/paints-and-primers/high-temp-paint/?549772211&0&cc5_161) because I also am coming across this one https://www.amazon.co.uk/Simoniz-Very-Termperature-Paint-500ml/dp/B003N9QL8U/ref=sr_1_7?s=automotive&ie=UTF8&qid=1490956409&sr=1-7&keywords=SIMONIZ+VHT (https://www.amazon.co.uk/Simoniz-Very-Termperature-Paint-500ml/dp/B003N9QL8U/ref=sr_1_7?s=automotive&ie=UTF8&qid=1490956409&sr=1-7&keywords=SIMONIZ+VHT)
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Right I have been out and got some. All ready to go - watch this space
(http://foc-u.co.uk/index.php?action=dlattach;topic=1402.0;attach=28835;image)
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That's the one. :)
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That's the one. :)
Thanks
Whats left in the can from last years Rustlulum will go on the BBQ
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JOB DONE
All rubbed down and ready for chem metal
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An then filled and painted, just need to leave for 10 hours and then go for a spin to fully cure it, and will see how long it lasts.
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Looking good sharpie. Just had a good old poke around underneath mine and it's still totally solid and the studs look rust free too :thumbup but I'm not taking any chances when I remove it. Just wondering whether there's anything I can do while it's off, to prevent it rusting from the inside, I thought of maybe cleaning it out a bit with brake cleaner then squirting a load of VHT paint down the end, (obviously with the silencer removed) and swilling it around in the hope that some of it might stick around the balance tubes and collector box area then pour out what's left. Opinions please. It's got to come off anyway, along with the radiator, cos I need to repaint the front of the engine and touch up the frame brace bars. Never endin' innit?
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I worry that from what I have seen the paint flakes off, at least with the last two I have tried, so when it flakes off it is likely to get blown and clog your baffle perhaps.
I think the best thing you can do to protect the inside is to not do short journeys which lead to a build up of water vaper but a longer run burns it off
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Yeah maybe, I don't really do short journeys anyway. I rarely get the thing out unless I'm gonna be doing at least 50 miles, I live in a terraced house and have to take it down the passage so it's a bit of a chore so I tend not to bother unless I'm going for a proper ride. I didn't intend it to become a restoration project but it seems it has.
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Right I can report that the Chem metal was sh1t - see 1st picture - completely blown/ fell off, so second picture re filled with gun gum.
Part of me thinks just to leave the holes and paint it and that way the water will drip out and prevent further rust. If I get a patch braided on then it will just rust under the patch without me seeing it
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Would it be worth cutting that section out and having a plate welded on. The problem that when metal rusts to holes metal around it is already badly rusted and you'll be chasing it forever. sorry I don't want to sound like I'm trying to teach my grandmother to suck eggs.
Don't take any notice of Vinny his Granny is a professional eggsucker.
You have to be careful how you say that :lol
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Not a professional, she only did it as a hobby but she was very very good. :lol
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Hey Sharpie, Have you decided what you're going to do with your colander collector yet?
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Hey Sharpie, Have you decided what you're going to do with your colander collector yet?
Not enough holes for a colander --maybe a pepper pot.
I am going with filling it with Gun gum as the picture, if I am taking it off to weld then a stainless steel one is going on instead.