Matts Micra CGA3DE 1.4 16v Twincam NA Build
Turbo Mini Forums

Ha! Does the wife know?

Another good reason to go Jap.

Class C 3rd Place Avon 2011 14.18 @101mph

Ultrasonic in good use

Just out of curiosity, what are the dimensions on that one?
I am thinking if fitted into A-series, can it be done?
Bigend diameter and width, gudgeon pin diameter, rod length, piston diameter and crown height.

75' Mini special deluxe.
1275 A+ engine with turbo on the way...

Everthing is completely different. For starts the big end are a lot narrower and the pin heights are way out.

Almost 1/2 the weight. No wonder these thing rev well.

Class C 3rd Place Avon 2011 14.18 @101mph

just out of curiosity Matt will the turbo manifold fit in a clubman front? ive been looking and im not sure i can bring myself to spend all my money on an a series ! looking at all the builds and the fact i break these all the time might save me a shed load.

Outside the box

Yes I'm sure it will, in the clubby front. It's been done in a round rose.

I'm still tempted by the turbo option, but to start with the NA is a little simpler.

That said,

The rebuilt engine with rehone, new rings, bearings, gaskets, worked cylinder head, billet cam, new chain & tensioners is costing about £1200.

Whereas for turbo you could use a stock engine and add turbo and sealed plenum.

Class C 3rd Place Avon 2011 14.18 @101mph

I think £1200 for a 120bhp rebuilt fresh engine is good value.

In standard NA form, without the cats, and better flowing manifolds it would still be a quick engine in a series terms.

They are very torquey, and the 5 speed box gives you a closer ratio box as standard. You can actually drive around in 5th from about 1400tpm in the heavier 860kg Micra.

Edited by alaskanow0 on 23rd Jan, 2016.

Class C 3rd Place Avon 2011 14.18 @101mph

I rebuilt a 1275 last year just for combe in my track car i think the bill was half that but i only ended up with a 1275 with a 296 cam and a hif 44 so yes it is great value. I built a vtec conversion in 08 and im not sure i can justify spending a whole lot of cash to get an a series to a level im comfy with im not sure i know what i want hence the shell sitting in limbo

But you are tempting me seeing as matt at fusion is working with rob at allspeeds to make what appears to be the way id like to go .......

Outside the box

I have Seen a gt17 fitted, the hardest part will be getting it done neatly and flowing well in the small space available.

Edited by matty on 24th Jan, 2016.

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

So matty my challenge to you is ......

To be honest im fairly sold the vtec frame and all conversion bits came from allspeed so im sure ill be back in touch with rob for the bits n bobs .

Spent hours looking at ecu options this weekend and it looks like nistune is the cheapest option so far .... but adding all the sums up its still half the cost of either the a series turbo or going vtec again


How hard can it be (going to regret this phrase)

Outside the box

Just thought I'd list the engine & box weight before I forget.

Engine, complete with head, no clutch 52kg
Gearbox 37kg

Class C 3rd Place Avon 2011 14.18 @101mph

Sorry Colin I didn't mean to upset you. Yes I'm happy, that I found the heaviest combo, just be make mine look far better than they actually really are. They were actually the only standard ones I had to hand.

Maybe this will help



Plus conrod bolts and rings though. Still 200g heavier (800g across all 4)

Edited by alaskanow0 on 1st Feb, 2016.

Class C 3rd Place Avon 2011 14.18 @101mph

these (for comparison ) are my old force racing lightened rods and fully cleaned up by my self, with arps

Attachments:

2.71mb

Edited by Brett on 1st Feb, 2016.

Yes i moved to the darkside

Instagram @jdm_brett

Apparently the standard rods are super reliable in full spec rally engines and 200ft/lb turbo builds. After market rods are available, but deemed unnecessary by most.

Unfortunatly ARP Bolts are currently not a option, but the Nissan bolts are of a high spec anyway.

I'll be limiting the revs to 7800rpm, as I'm sticking with a new set of standard valve springs, but with a full balance, heavier springs and solid (shim less) followers 8500rpm is possible.
At that level the standard oil pump is the weak link, as its limits flow to the chain tensioners.

Edited by alaskanow0 on 1st Feb, 2016.

Class C 3rd Place Avon 2011 14.18 @101mph

Decided to replace all the bearing and seals in the gearbox, whilst waiting for the engine machining to be done.

I little overkill, but apparently, like with minis the box is the weak link, as the bearing can collapse at high mileage. . After 39k the bearing were still in good shape. Just a little wear on 2nd. So all got replaced anyway with genuine items.


Having read a few Micra build threads, worn bearings can cost you a few bhp. Someone on Micra.org gained 11bhp at the wheels.

Edited by alaskanow0 on 5th Feb, 2016.

Class C 3rd Place Avon 2011 14.18 @101mph

Also picked up a 3 piece clutch kit. It's a standard Nissan Almera 1.4 ga14 N15 (87bhp). Only cost £35 and should prove a cheap option upgraded clutch. Still 180mm, but higher clamping force from the pressure plate. Again another tip stole from the rally boys.

Edited by alaskanow0 on 5th Feb, 2016.

Class C 3rd Place Avon 2011 14.18 @101mph

Most bearings are off the shelf, but damaged items would require Doner boxes or expensive bill from a main dealer.

Same as Minis really. Luckily the gears and synchro's hold up very well in comparison.

Much better modern design though and of course no silly drop gears.

Class C 3rd Place Avon 2011 14.18 @101mph

Ok I got abit carried away! Whilst researching the Race Tech Dash2 for the lightweight project I put a cheeky bid on a brand new Stack 8130 Dash and only went and won it.

So now I've ended up with 2 dash systems. So I think rather than getting the speedo recalibrated for the Nissan gearbox, I'm going to fit it to this mini instead.

Class C 3rd Place Avon 2011 14.18 @101mph

Nice, always wanted one of those.

Lol nice work lol

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

7 Port turbo engine out & sold.

Class C 3rd Place Avon 2011 14.18 @101mph

I bet that was a bit of a wrench letting that motor go.

If something is worth doing, it's worth doing half of.