Wiring done right with Deutch DTM connectors.

I’m in the process of wiring in an AEM Infinity EMS where I’m creating the harness from scratch.  It’s a parallel install which involves splicing, teeing and cutting misc wires...

New wheels for the street and wheel weight comparison.

When I picked up the old 1.8 engine on the wreckers I also bought some super cheap Mazda 6 2.3 17” wheels.The 16” OEM wheels will not clear the new...

Spare engine

I got hold of a cheap MZR 1.8 out of a 2007 Mazda6 a while ago.I will use it as spare engine so for next season if the 2.5 problems...

Engine rebuild part 9 and beyond..

I just realised I haven’t made an update here since spring.Short story : The 2016 season has been a disaster with less than 2h behind the wheel and what feels...

Engine rebuild part 8: Assembling the bottom end, crank, rods and pistons. Twice of course...

Progress, although things are going slow.- Crank oil holes deburred. Took a lot of work to polish after deburr. No pics.- I received the bearings.The old ones were marked with...

Engine rebuild part 7: Valve lifter adjustment after valve job

The valve job I did earlier changed the valve clearance a tiny bit as it will position the valve further into the seat.  The MZR uses bucket between the valve...

Engine rebuild part 6: Crank finally arrived. Measuring clearances and ordering bearings.

Finally my crank arrived.  Actually the same day I showed up early in the morning and held a little speech regarding customer satisfaction. They used two months and all that...

Engine rebuild part 5: New engine internals and gapping rings, twice...

I received my new shiny pistons and rods some time ago.  The block however wasn’t finished (rebore) until recently after spending 3 months at the machine shop.But now It is...

Engine rebuild part 4: Mazda MZR 2.5L valve job and assembly

My cylinder head needed some TLC after the port job as some of the seats had some minor scratches after the grinding, and I’m pretty sure some of the valves...

Engine rebuild part 3: Porting the MZR 2.5 L5VE head including results

The piston failure on cyl #1 caused a lot of carbon buildup in the ports and on the valve/pocket.  To verify that the head was still in shape I delivered...

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...