How the MX-5 NC cooling system works

The MX-5 NC cooling system can be a bit hard to fully understand unless you have had the engine out.  Lots of hoses going everywhere and some important parts are...

Engine rebuild part 2 - detonation

I took a closer look at the pistons after disassembly in my earlier engine rebuild part 1 post.After a quick session with the brake cleaner on the piston domes there are indeed...

How compression ratio effects power output of an engine

Since I need new pistons in my non voluntary engine rebuild I’m considering upping the compression ratio to extract more power.But how much more HP can I expect by going...

Engine rebuild part 1: Tear down and damage assessment

I have started disassembling the engine to find out exactly how broke I’ll be after the rebuild.After testing the compression all I knew was that cylinder one had 0 psi which...

Trip to the Nürburgring 2015, new personal best BTG time!

During the first two weeks of august me and some friends had a fantastic trip to the Nürburgring.This was my 5th visit to the Ring and the longest and most...

Smoking is harmful, for your MZR engine that is.

Short version:  Engine is furkedLong version:I attended a VACN trackday last weekend which was no fun at all.In my third session I suddenly noticed white/blue smoke in my rear window...

MX-5 Vmaxx Big Brake Kit install and review

After this winters power upgrades the poor stock brakes are struggling to keep up .  After about 5 laps in attack mode they’ll start fading and act non consistent.  It...

Installing a OS Giken limited slip differential into a MX5 NC

My 2006 NC 1.8 came with an open differential. Not a big problem while on the stock suspension but after upgrading to stiffer sway bars and the KW3 suspension it...

Port matching the FlyinMiata SC manifold to fit a MZR 2.5l (L5-VE)

The MZR 2.5L has a different head with larger intake ports than the 2.0 MX-5 head. The ports do not match perfectly and the stock 2.0 gasket will not fit....

Lowering the MZR 2.5 in a MX-5 using a modified motor mount

The 2.5l MZR engine is about 14mm higher than the 1.8/2.0 version. This results in clearance issued with the FM SC intake rubbing with the hood and the stock strut...

Calculating hp and tq using Virtual Dyno and MazdaEdit on a MX-5 NC

I had a go at measuring horse power and torque today using Virtual Dyno and the Dyno function in the MazdaEdit LogViewer.Both are based on the same method; measuring the time...

Two first track days of 2015. Success!

I did my first two trackdays this season on the 23. april (NSK) and 3. may (Trackday.no)This was the first time with the new engine.The first one was more of...

Brake ducting installed

I bought a brake ducting kit from gw ages ago but never installed it due to the reservoirs on the KW3 suspension interfering with the inlet of the ducts.  After...

New DW65c fuel pump install

I decided to upgrade my fuel pump for several reasons.- I was not able to keep target AFR with the SC above 11 psi regardless of MAF scaling and other...

New CSF radiator installed

I managed to slip my car jack off the crossmember while trying to get control of a oil leak and ended up destroying my radiator a while ago.  After logging temps during...

Mazda (MX-5) MZR engine data and rod ratio.

While doing researching on the MZR/Duratec I4 engine i collected some data from different sources for the most common variants of the MZR L engine used in the MX-5 (factory...

New engine for 2015.

For those of you who read my blown-engine-post-mortem post it may not come as a surprise that I didn’t rebuild the 1.8 MZR engine with the block fubar and all.I did as...

Mazda MX-5 NC 2.0 does 07:58 Nordschleife BTG

This is really impressive.  I have done a few laps around the Nordschleife with a NC myself but not even close to a sub 8 min lap.  170 km/t trough...

Dry sump kits for the MZR/Duratec and how they work.

While wasting time on the internet I read an article about dry sump oil systems.  I have always thought this was used exclusively for eliminating oil starvation and enabling the...

Mazda MZR camshaft data

IND over at forum.miata.net posted some invaluable data on the different cams available for the MZR engine including Cosworth, Kelford, Tomei and Crower/Massive. http://forum.miata.net/vb/showthread.php?t=564488I’ll just quote the entire post here in...