Another build/rebuild thread Sierra + MX5

[Ianr]

Thanks Gary - I was going to get a 4 into 1 manifold so I'm going to have to do a rethink to get through IVA

[flyerncle]

Some egr valves sense the amount of lift in the valve body and usually have 5 wires ,leave it connected and try blanking it off,should not effect emissions as have seen scoobys go through mot with no cat and emissions are spot on (then failed it for no cat fitted )

[Ianr]

Ok thanks for that. I've got to sort out an exhaust manifild for the car, I was hoping to put a Mk 1 manifold on but it doesn't have an outlet for the EGR. I guess I'll have to see what I can do with the Mk 2 manifold with crude (mine) rerouting of the pipes. That way I can keep the EGR and no probs with IVA. If I was sure just blanking off the egr would give no mil light I would be happy with that. The issue I suppose is not knowing what will happen when I put the wiring loom in and an exhaust and fire it up.
Thanks for the help guys.

[flyerncle]

Blank egr port off and leave valve connected to wiring and see what happens,its more to do with it being there and ecu see's it as working and does not actually know if there is gas going through it only its position relative to maf and tps engine load and revs.

Hide EML light !

[Ianr]

I've posted this elsewhere but have had no reply yet, can anyone here help?
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I'm building a Haynes Sierra/MX5 Roadster with a Mazda MX 5 1.6 Mk 2 steering column. I bought a steering wheel and boss from ebay which had been fitted to a 1.8 Mk 1. Ok I knew there would be issues with the airbag and horn but I was surprised to find the splines on my Mk 2 column are about 15mm dia where the boss I have bought is about 25mm. Looking around many suppliers say a Mk 1 boss will fit a Mk 2 but with no airbag or horn connections.

Does anyone know what the column diameters are on the various models - or have a boss that will fit my Mk 2 - I don't want to buy a Mk 1 boss to find it will not fit again.

Thanks
Ian

[Stot]

MK1 splines are never an inch. They take a 17mm nut IIRC and 15mm sounds right. NA and NB Mazdas are the same, dont know about NC.

http://www.demon-tweeks.co.uk/perfor...wheel-boss-kit

Same boss for 90-05 cars.

Sounds to me like your boss is wrong.

Cheers
Stot

[Ianr]

Originally Posted by Stot

MK1 splines are never an inch. They take a 17mm nut IIRC and 15mm sounds right. NA and NB Mazdas are the same, dont know about NC.

http://www.demon-tweeks.co.uk/perfor...wheel-boss-kit

Same boss for 90-05 cars.

Sounds to me like your boss is wrong.

Cheers
Stot

Thanks Stot - that is exactly what I thought, I have been back to the seller of the boss who is insistent on it came off a 1.8 MX5. Looks like I will have to buy another.