The lower 4 wire O2 sensor is correct on your later 1.6 ( 1994-1997), the single at the top is not for your year,that is for the early 1.6 from 1989-1993 there should be a blanking plug in the single wire hole on you later 1.6, the 4 wire sensor was also fitted to the MK 1 1.8 from 1993-1997.it is t...

It will fit but its the wiring up thats the issue.
M-m

Its easy enough to get it back bud .
M-m

New crank boss as arrived and fitted, everything is built back up, I had to clean everything of oil before slowly bolting everything back together, i had to re paint the cam pulley back plate, fan switch is faulty and intermittent, so will need changing before leaving, the cooling fan is fine and wo...

I will recommend the IL rubber bushes,fit them, use them , forget them, poly is just to hard and brings on metal fatigue if not fitted and looked after right,
M-m

I am going off the picture, i will check the UK spec later 1.6.
But the bottom one does look like a blanker?
M-m

Well done for sorting it, just think of that bill you won't have now at a garage....it will of fallen down behind the plate that covers the ECU as Bry as mentioned...as for unscrewing ...that all depends on the condition....it is held i place with 10mm nuts and bolts...leave it be ..its will be fine...

The one at the bottom...is it connected? As it looks like an aftermarket down pipe and its being used as a blanker.? I can see the one on the manifold (top one) which should be connected as that is the OE Mk1 1.6 single wire one
M-m

Ok ? I would try a new O2 sensor....is idle ok? , Is she running rich.
M-m

Just unplug... unscrew...re screw and re plug in...
M-m

Which cat?
M-m

Looks correct to me bud.
M-m

Surely cutting off a chunk of the crank boss is going to cause further long term issues in that as an item that spins it will be way out of balance and induce a wobble that in turn puts stress on any supporting bearings and seals however small the effect is. It defo will not be going back on, it co...

Every roadster i work on tells me a story as i take them apart and this is no exception to the rule....the last owners loved her but to a limit, and with Austin taking her on and trusting my hands.eyes and judgement as let me loose to sort her out for his good lady...... The engine strip down starts...

Get a new unit, good ones can be bought off the bay of E now for £20,(which is no killer for even a yorkshire man LOL)as there is no moving parts, and to be honest it is rare that i bang a radio/HU on any way, i would rather listen to the engine and zorst, it just becomes back ground fuzz.
M-m