- An engine enamel for blocks, heads, covers and brackets, rated to 288°C intermittent. Not for a manifold; that is VHT's FlameProof.
- The cure is the easy part: 93°C for 20 minutes in an oven, or drive the car.
- The recoat window is the hard part: all coats within an hour, or wait a week.
- It is one of three cans. VHT recommends its own primer under it and sells a clear to go over it.
- The OEM colour records name the satin black for the Ford Pinto block and the gloss black for the Kent, Essex, 1970s Mini and MGB blocks.
What it is
VHT's Engine Enamel is a one-pack aerosol the maker describes as a blend of urethane and ceramic resins, rated for the parts that get warm rather than hot: blocks, starters, brackets, water pumps, valve covers and transmissions, in VHT's own list. Its sibling FlameProof takes the headers and manifolds, and the two are easy to confuse on a shelf; the brand page explains how to tell them apart.
The can is 312 g, the American 11 oz fill, and it reaches Britain through Frost, which is why Amazon UK files it under FROST. The two listings are satin black and gloss black. The rest of the range, from cast iron to Chevy orange, appears on Amazon UK as Frost brings it in.
The figures, and what they mean
VHT rates the enamel at 550°F, which is 288°C, and calls the figure intermittent: a peak the film survives, not a temperature it sits at all day. That is the highest rating of the aerosol engine enamels on Amazon UK, and it is far above what a block or a rocker cover reaches. It is also 400°C short of a manifold, and VHT does not pretend otherwise. The engine enamel page sets the figure beside the other makers'.
The sheet gives working conditions, 16 to 35°C and humidity below 60%, and no coverage. The two VHT documents disagree about drying: the data sheet says touch dry in an hour and handleable in three; the product page says 30 minutes, an hour, and 24 hours to dry completely. Treat all of them as best cases for a warm, dry day.
Putting it on
Remove loose paint, rust, dirt and grease; VHT says blasting or 320 grit will do it, then a grease and wax remover before and after abrading, because sanding drags contamination out of the pores of the casting. Preparing an engine for paint goes through it.
VHT recommends its SP148 Engine Enamel primer underneath, for adhesion and even colour. That is a different instruction from Hycote, whose enamel is self-priming and whose sheet says to use no primer, and from POR-15, which wants its Rust Preventive Coating on bare metal. Follow the tin in your hand; the primers page explains why the makers disagree.
Shake for a full minute after the ball moves and ten seconds more for every minute of spraying. Hold the can 20 to 25 cm away, start moving before you press, and lay on two light coats and then one medium wet coat, ten minutes apart. Everything within an hour. Spray a fourth coat on day two and the fresh solvent attacks paint that is skinned over but soft beneath, and the surface wrinkles; VHT's answer is a seven-day wait. Applying engine enamel draws the window beside the other makers'.
The cure
VHT's own words are that the enamel only attains its properties after correct curing. The schedule is the most convenient of any maker here: bake the part at 93°C for 20 minutes with it off the car, or let the running engine do the work. A rocker cover or a bracket fits a domestic oven at that temperature; a block does not, and does not need to, because the engine will finish the job.
Until then the film is soft. Bolt parts on once it is handleable, gently, and keep brake cleaner and solvent off it until it has seen heat.
Where it sits against the others
Against Eastwood's Ceramic Engine Paint, rated to 343°C from a quart tin: Eastwood has the figure, VHT has the aerosol, the primer and the clear, and the easier cure. Against POR-15's Engine Enamel, the brush-on: POR-15 has the finish and the coverage figure, VHT has nearly twice the rating and a cure of minutes against POR-15's four to six days. Against Hycote, the can on every motor factor's shelf: Hycote's gloss black is rated 140°C by its own sheet; VHT's is 288°C.
Best engine paints 2026 ranks it first overall, and it is the first pick for a Pinto block in Best engine paints for Fords.
Who it suits
A black British engine of the sixties or seventies, which is most of them. The colour reference names the satin for the Ford Pinto block and the gloss for the Kent crossflow, the Essex V4 and V6, the A-series after 1970 and the MGB after 1971. Anyone who wants the paint cured and the car on the road the same weekend.
Not the owner who needs a named marque colour; those are in tins from Frost and POR-15. And not anyone who cannot keep every coat inside an hour: a block painted in instalments across a weekend is a block that wrinkles.