Who can do this or know of places that can and how much would i be looking at?

 

Thinkning ABout it but would like a good price guide.

 

Thanks

 

Munny

if you get it chromed , you will still have the rough cast finish.....best to get it polished or buy a polished one off the forum ready done , or for something different get it powder coated the rough finish would be like the crackle finish applied to some italian exotic machines ........just a thought i bought mine polished when i swap it i will probaly polish the one i take off and sell it on , just as a project and it helps other zedders

maybe you could chrome it once polished, but i wouldnt want mine filled up with chrome

well yes thats what i meant to say, i would get it polished then chromed :D just wondering if anywhere or anyone on here can do it!

 

Many thanks

 

Steve

Bee Gee Vinz has a chromed plenum , i think he got it from the states though , i,m sure either Courtesy Nissan or Z1 Motorsport :confused:

I polished mine , takes a fair bit to look after them cos alot of it is covered one way or another :rant:

dvdcodes on here does chroming, im sure he will do it and be along soon. but it will have to be polished first :)

http://www.z1motorsports.com/product_info.php?cPath=6_383&products_id=978 Here yer go fella.Sorted :D

TBH I'd go for polishing over chroming every time. The conditions of an engine bay aren't forgiving on chrome. If it flakes, it's plenum off and a re-chrome. If you nick a polished plenum you stand a chance of being able to sort it in situ. I've been able to achieve the same standard of shine from polishing. Here's a link to one of the ones I did a while back: http://www.300zx.co.uk/forums/showthread.php?t=84852

TBH I'd go for polishing over chroming every time. The conditions of an engine bay aren't forgiving on chrome. If it flakes, it's plenum off and a re-chrome. If you nick a polished plenum you stand a chance of being able to sort it in situ. I've been able to achieve the same standard of shine from polishing. Here's a link to one of the ones I did a while back: http://www.300zx.co.uk/forums/showthread.php?t=84852

 

Apart from the above comments I'd also like to add that you will probably find that your engine will run considerably hotter with a chromed plenum. I'm sure Rob (dunk300zx) will correct me on the figures but anything you chrome will radiate upto 65% less heat - meaning more heat stays inside the plenum. In itself not so much of a problem but in stock (ie, unchromed form) it already gets extremely hot.

 

Slightly related - if you compare the heat output of two identical radiators, one left untreated and the other chromed, you will find that the chromed radiator radiates far less heat. It'll look nicer and trendier on your livingroom wall but you'll end up spending more ££ trying to heat the place!

 

You are probably better off getting the plenum polished professionally.

 

Just my 2P worth.

So does powder coating it make any difference in regards to heat dissepation?

Their is another alternative if your main priority is just to keep it looking bling and not needing to be properly polished onece every Three months. That would be to have a polished plenum etched primed and then getting it Chrome painted. This retains fare less heat than electro plating, but still means plenum off if you damage it.

So does powder coating it make any difference in regards to heat dissepation?

 

This is quite a complicated question in this instance, so here are some things to think about :-

 

• Black surfaces absorb heat better than shiny, reflective ones
  
• Radiation (dissipation) of heat is affected less by colour than absorbtion is, although it is still a contributing factor
  
• Any 'coating' will insulate the item and affect cooling
  
• Chrome counts as a coating, as does paint etc
  
• Anodising is more a dye than a coating so less insulating effect
  
• Nissan (and others) used to paint radiators black, it turns out the coating was thick enough to have a marginal effect on efficiency
  
• The plenum is more or less analogous to an intercooler, except that it is also heated by conduction from attachment to the engine and is in a very hot place rather than out in the fresh air - this really can't be very efficient
  
• The underside of a black plenum would absorb radiated heat from the cylinder heads of the engine
  
• The plenum is probably cooled by the air coming into it !
  
• If the plenum was intended to dissipate heat it would probably have some fins on it
  
• Polishing the plenum will actually reduce the surface area, therefore reducing the ability to dissipate heat
  

 

 

There are probably lots more that I can't think about right now ...

This is quite a complicated question in this instance, so here are some things to think about :-

 

• Black surfaces absorb heat better than shiny, reflective ones
  
• Radiation (dissipation) of heat is affected less by colour than absorbtion is, although it is still a contributing factor
  
• Any 'coating' will insulate the item and affect cooling
  
• Chrome counts as a coating, as does paint etc
  
• Anodising is more a dye than a coating so less insulating effect
  
• Nissan (and others) used to paint radiators black, it turns out the coating was thick enough to have a marginal effect on efficiency
  
• The plenum is more or less analogous to an intercooler, except that it is also heated by conduction from attachment to the engine and is in a very hot place rather than out in the fresh air - this really can't be very efficient
  
• The underside of a black plenum would absorb radiated heat from the cylinder heads of the engine
  
• The plenum is probably cooled by the air coming into it !
  
• If the plenum was intended to dissipate heat it would probably have some fins on it
  
• Polishing the plenum will actually reduce the surface area, therefore reducing the ability to dissipate heat
  

 

 

There are probably lots more that I can't think about right now ...

so in conclusion just get some autosol metal polish, a toothbrush and some elbow grease mine looks ok :D

Well, I'd say polish the underneath of the plenum, leave the top a matt rough cast finish and get some cool air moving under the bonnet.