Does Ink Black PSS-0106 require a top coat when applying onto wheels ?

Ink Black PSS-0106 is an extremely high gloss Black powder coat that normally does not require any sort of clear coat. However, I recommend considering your application. A top coat like Clear Vision PPS-2974 can provide added protection from chemicals and road debris. If the Clear Vision chips from a rock at least your Ink Black could still be intact and the clear can be touched up easily. Ultimately Ink Black PSS-0106 does not require a top coat.

Why does my clear coat have always a orange peal when applied over Ink Black? My other powders looks nice and smooth but when coating ink black with a clear coat I end up with a very heavy orange peal.

Clear Coats including our Clear Vision PPS-2974 can magnify problems underneath especially when applied over a dark color like Ink Black PSS-0106. Each coating you should be striving for a 2-3 mil thickness (.002"-003" thousandths of an inch or 50-76 micron). Too thin and your coating could have a tight patterned bumpy orange peel look and too heavy and you will have a wider spread orange peel. Often times Orange Peel will appear even when the coating is applied at the correct thickness but will smooth out at the end of the cure cycle. So, if you pull the part before the cure cycle is complete you may still see Orange Peel that could have smoothed out if the powder was allowed to complete its cure cycle. Cure timer should never begin until the thickest part of the substrate reaches cure temperature. Orange Peel can be highly visible on a color like Ink Black (vs. a light base coat). If you apply your Clear Vision PPS-2974 over an Orange Peeled Ink Black, this will magnify the Ink Black's Orange Peel. Orange Peel can also appear in a heavy application of Clear Vision. A mil gauge is an important tool to make sure you are reaching the proper thickness for each coating. This can be checked at the flow-out stage. Pull the part from the oven, allow to cool (below 120 deg F) and check thickness. If too thin then add more and re-flow into the original coating application. Our mil gauge is an excellent buy.

Will this color work well as a coating for a motorcycle exhaust pipe?

Generally, no. Exhaust components generally get too hot for what traditional powder coatings can handle. The max temp powder coating can handle is about 250F with spikes up to 350-400. For high temp coatings for exhaust we would recommend Cerakote's high temp line.

Would 1 pound of powder coat be enough to do about four rims?

It all depends on the size of the rims. For an average 17 inch automotive rim, 2-3 lbs is a more appropriate quantity.

I used the ink black on some aluminium parts it scratches up very easy, Did i do something wrong or? Thanks in advance!

If powder is under cured it can scratch a lot easier due to being softer. Another thing to keep in mind is that high gloss blacks do just tend show imperfections easier. Applying a high gloss clear top coat such as Clear Vision PPS 2974 can go along way in helping prevent the appearance of micro scratches.

Would this powder work alright on a V8 intake manifold ?

Possibly, you just need to make sure that if the intake does not reach past sustained temps of 250F.

I have a fork slider for a harley that after fully cured seems that it's missing a bit of powder. Can I reapply some powder even if the part is fully cured and cool down from yesterday?

Unfortunately, if the existing coating is fully cured then you cannot just touch up one spot, you will have to scuff up the existing coating and re-coat the parts.