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Gtir Motorsport club » General Discusion » Gtir related Discussion » polishing plenum

polishing plenum

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26polishing plenum - Page 2 Empty Re: polishing plenum on 11th December 2014, 9:01 pm

ROB_IOW

ROB_IOW
the two star club
the two star club
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27polishing plenum - Page 2 Empty Re: polishing plenum on 11th December 2014, 9:03 pm

ROB_IOW

ROB_IOW
the two star club
the two star club
That is about 5 hours of sanding

Started by going over it and removing any casting numbers etc with a grinder
Then a wire brush

Then 40 grit 250 , 400 , 600 , 800 , 1200 and a top sand with 2000 grit

28polishing plenum - Page 2 Empty Re: polishing plenum on 11th December 2014, 9:05 pm

pulsarmoley

pulsarmoley
moderator
moderator
Oooh shiny Cool


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29polishing plenum - Page 2 Empty Re: polishing plenum on 11th December 2014, 10:14 pm

gtir_woody

gtir_woody
moderator
moderator
Looks awesome, 5 hours though Shocked keep that sanding going, it will come up great when it's done

30polishing plenum - Page 2 Empty Re: polishing plenum on 13th December 2014, 8:24 am

gtirx2

gtirx2
Top job that mate,i done all this once and its a huge job to do.
If you buy a polishing mop on a drill and razz over it now it will come up great.

Sad really but its easy to get carried away with the polishing stuff,i was and proberly still am terrible for it.

Ended up doing the full inside and visible outside of plenum,top part of the runners inside,thermostat housing,top water pipe on head and the engine mount to a shinny finish Neutral  

I am sure there are better ways I could of spent my time...maybe it was therapeutic Laughing


Have glass bead blasted alloy stuff and also sand blasted,both leave the surface a little porous and attract oily finger marks and if it gets wet will corrode if not cleaned off in time.
I think aqua blasting is ment to be good as its not quite so aggressive.

31polishing plenum - Page 2 Empty Re: polishing plenum on 13th December 2014, 12:58 pm

Mr B

Mr B
gtir technician
gtir technician
^ as above, alloy just finished with bead blasting is a pain due to porous surface, I found alkaline etching really good with a soft quality satin finish which wipes clean easily & resists corrosion well too.

32polishing plenum - Page 2 Empty Re: polishing plenum on 19th December 2014, 7:00 pm

mikewazowski

mikewazowski
What i did with mine was use a wire brush on a drill, then 160 sand paper to smooth it out a little, 400 grit to finish it off and i bought some silver engine spray paint from halfords, worked a treat. Quite easy to clean and looks okay too Smile

33polishing plenum - Page 2 Empty Re: polishing plenum on 21st April 2019, 4:55 pm

92pulsar

92pulsar
So this would work for intercooler surround to I guess

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