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We'll add to that with figures from a CG13 on standard head and compression, standard bottom end, with Tomei cams, throttle bodies and with a little help from Emerald.

Does anyone know what component is under the little bogey on the fan speed board. I am suspecting it is a surface mount resistor, the only doubt in my mind is that all the current for the fan motor would be running through this (in first three speeds) and it seems too small watt wise. I've...

Front discs are easy, virtually any Sunny, Almera or 100NX disc & caliper will fit (with spacers to correct offset of caliper, spacers being 3-4mm washers). Choose carefully if you intend to use performance brake pads, because not all caliper variants are covered. Also watch your wheel size, not...

Looking at most of the cams on show at Autosport, it looks as if manufactures are going away from big lift and are now doing big duration. Cam lobes are looking like the ends of giants thumbs now! I presume this has something to do with lighter valve trains and the ability to keep emissions down...

Cheers for the offer mate, but could do with other spare parts too, so I guess I'll look out for a whole engine.

Its a little worrying, cause if the '2' on my pistons is the grade, I've got three 2's and a 1! Do they mix sizes on engines, I can't see from the photo if yours are all 2's. My block is away being honed, so I can't check what its meant to have. However, the engine did have non-original sealant...

Have seen figures of 10.2 & 10.5 talked about on here & micraholics, guess I'll just have find a 1.0 engine, rip the pistons out, get them on my rods, installed & start measuring! Easy :grinning:

The cat next to the manifold is the one that heats up first and is there to reduce the emissions from start up. The one under the car should be enough to get the car through the mot providing it is nice and hot. This works best if you can give the car a good run immediately before the test. If...

I'm just weighing up various options at momo. When the head is skimmed enough to raise the cr up to where I want it, the cam timing starts becomming an issue.

I see this has been covered a few times before, but does anyone have this mod running and by any chance was the compression ratio measured / calculated while the engine was apart. Also whats the valve / piston clearance like? Are all 1.0 pistons flat tops?

So where did we end up with this? Is your car still running OK Paul? We have found on some rallies (Colerne in particular) with long straights where we are flat out in 5th (with 14" slicks this is about 95mph ish) that we could do with say 500rpm more. We will be building an engine soon, on...

Can anybody suggest a way to get the 'tubes' that are in the head around and above the spark plugs out? I want to get the head skimmed and I am assuming these need to come out so the head can sit flat on the mill bed. I have tried 'gentle' persuasion with stilsons; no go! Any non-damaging...

Someone told me of a mod that can be done to the inside of the distributor on a cg13 that removes the 6k5 rev limit. I'm a bit reluctant to say here what it is, but has anyone reading this heard of it? I don't understand how the ecu reacts to the changed signal.

CG13 Rally Engine Mods. We've been rallying our Micra for almost a year now with generally good results. When we built the car the plan was to run the standard engine for the first year; the car is fitted with a Harry Hockley 5 speed straight cut dog box and gripper LSD. We have a spare cg13...