New Engine

Out with the old... Old 850

And in with the new... New 1275

The new engine is from the MG Metro.
For a while the engine compartment was empty, clean(-ish) and de-rusted, awaiting the engine.

This has now been remedied, and the new engine is in and running fine.

Engine Specification

MG Metro 1275 A+
Standard head, NGK BPR6ES plugs
HIF44 - modified to TBASE spec
K&N Filter & stub stack
Maniflow LCB & single box side exit exhaust.

Rolling Road Sessions

First Session

During the first session the basic setup was checked. It turned out I had the timing set OK, but the plug gap was a little small (I'd forgotten to check the supplemental chapter of the HBoL :), so this was fixed, and then the car was put through a run on the RR - turned out the needle (BDK, supplied with Stage 1 kit) was way too lean, so we started looking through the needle charts. BDS, looked better, and this was fitted, but turned out to be too lean also. We then plumped for the BCG (which is the thinnest needle I ever saw :) but this turned out to be too rich.
All the other choices (BCA, BAC, BBC) weren't in stock, so we did quickly try the original BDK with stronger spring (green) but that didn't deliver the solution either.

So, the engine was setup with the original BDK, while we wait for a stock of needles to arrive.
We then ran through a power run to get the following result:

Power Run - BDK

Second Session

We recently held a second RR session to try out the additional needles.
The BBC needle wasn't enough and showed up too lean in several places. We then tried the BCA needle - bingo! That was pretty good throughout the range - I could actually hear the difference in the engine - much more grunt throughout the range.

So we had another power run:

Power Run - BCA

I'm reasonably happy with the result, so I'll be running on this needle for a while an monitoring closely how it performs and how the fuel economy goes.

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