Karen's Imp Sport

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Re: Karen's Imp Sport

Post by bks974c »

Browsing for ideas on Karen's wheels, trying to decided whether to go silver with polished rims or body colour with polished rim :?

Anyhoo, came across this article https://www.dailyrecord.co.uk/news/scot ... ry-1865947
with Karen's car lurking in a couple of pics. Attended with Amy as Karen was working abroad at the time, where has the time gone :shock:

Scott
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Re: Karen's Imp Sport

Post by bks974c »

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Started blocking the Imp, denib any bits of dirt etc with P1000 and then flat with P1500 wet, once happy with that go over with P3000 on the DA sander with an interface pad before polishing with Farecla G3.

My brother Craig came up today and was most impressed with my painting and he is super critical so that means a lot, the fact that it is very flat means that it requires minimal effort to get it smooth which is even more pleasing :D

Scott
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Re: Karen's Imp Sport

Post by Neil »

Car is looking fab!

what style wheels are you going for? I am just starting to assemble my car and looking at wheels and veering towards minilite style, not very original but they just work so well with the imp.
Neil
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Re: Karen's Imp Sport

Post by bks974c »

Neil wrote: Tue Dec 20, 2022 8:39 pm Car is looking fab!

what style wheels are you going for? I am just starting to assemble my car and looking at wheels and veering towards minilite style, not very original but they just work so well with the imp.
Neil
Yes, minilite's do look good, run them on most of my Imps but Karen has a set of Compomotive's so they will be going back on. Scroll back to first page and pics there of them.

Scott
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Re: Karen's Imp Sport

Post by bks974c »

Still polishing Karen's Imp but been disturbed by Stuart who I've been helping rebuild an GM480LE automatic transmission over the last couple of days - they make it look easy on the internet but seem to miss out the bits you want to know just like Haynes Manuals :o I'm sure many will know all about that.

Anyway, took a break from polishing this afternoon and pulled out the air filter housing now the air filter had arrived, measured up the filter and cut an appropriate sized hole in the adaptor and got the filter fitting very nicely. I then took another look at the inside and noted that the original mountings for the air filters partially obscure the holes to the elbows. well that's not clever :roll: they will have to go. So removed them and the air flow to the carbs will be much better, it did occur to me that the bump in the carbs might be better smoothed off but decided that maybe a step too far, besides there is a set of 150 that are partially done that could be used but not chasing extra power from this set up.

Not impressed with the appearance of the K&N filter and have emailed them a pic but are on Christmas holiday's now so will have to wait until next year for a reply :D
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Re: Karen's Imp Sport

Post by bks974c »

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Polishing done, ready to start the hunt for the bits that are going back on after the festivities :D

Scott
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Re: Karen's Imp Sport

Post by bks974c »

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Re: Karen's Imp Sport

Post by bks974c »

Much work has been ongoing with the wiring and much redoing but getting there, needed more parts so while waiting on delivery started on the NEW heater matrix.
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The clan has a really effective heater so much so I sometimes have to turn it down :o but is too large to fit inside the original casing so I went for the compact unit as it should fit. Well that was the plan but once I stripped down the original unit I found the case and plastic cover create a sandwich which forms a passage for the air. This meant the actual metal frame was thinner than I had expected and will require a custom made housing.

The matrix has an integrated 3 speed fan and with the optional duct plate allows for 3 positions - windscreen/ dash vents /dash vents & floor. Further work required but it looks like it will fit.

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Re: Karen's Imp Sport

Post by moose »

looking good. I have just started an aircon/heater install on a Mk1 Escort historic rally car that will be doing endurance events one of them being Alaska to Mexico so the Driver will be in the car for four weeks every day and in temperatures varying from sub zeros to high 30's plus. Certainly testing my prep skills with the specification as comfort and performance for a long time is a strange combination for a competition car.
Regards Moose imp competition secretary
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Re: Karen's Imp Sport

Post by bks974c »

The best laid plans o' mice and men :(

Could do with a wee boost so thought I'd see if I could get the engine to start, I had bought a new battery but forgot to check the terminals as well as the size and rating, Japanese terminals :shock: oh well order some terminal convertors. Put some fuel and check for leaks :twisted: :twisted: :twisted: :twisted: always the most awkward one, the return to the tank, despite tightening the fittings it still leaked. Removed them to find damage to the adaptor, I had dropped the tank ages ago and bent the flange which was no biggy as easily sorted but must have caught the fitting which I hadn't noticed :cry: . Oh well, get them reordered.
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Moved back on to the heater matrix, my elbows had arrived but need serious modding to fit and they weren't exactly cheap but done now. This meant I had to remake the top of the casing as the last one sloped and this fouled on the elbows. Reassemble tomorrow and see if it will fit in the car :roll:

Really have to have a word with myself if all this faffing about is worth the effort.
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Re: Karen's Imp Sport

Post by Uncle Henry »

More great work, Scott. I'm sure it WILL be worth allof this effort. The end is not too far away, I'd suggest. 8)

Ag
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Re: Karen's Imp Sport

Post by bks974c »

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Heater mounted, need to space out to align screen vents properly but that may have an unintended advantage - still to be explored.

Scott
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Re: Karen's Imp Sport

Post by Uncle Henry »

I see Bob Picton's been busy, Scott 8)

AG
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Re: Karen's Imp Sport

Post by bks974c »

Uncle Henry wrote: Sun Jan 15, 2023 8:43 am I see Bob Picton's been busy, Scott 8)

AG
Indeed, top quality products.

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Re: Karen's Imp Sport

Post by bks974c »

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Had to replace the headlight backing bowls as the chrome rings had rusted, the replacements (Wipac plastic) certainly taken a step backwards in terms of quality, everything had been reduced to the bare minimum to do it's job and no more. Can't see them lasting 60 years :o mind you the plastic bits might be around for millennia :(

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Re: Karen's Imp Sport

Post by John A Ross »

Thats a fair bit of wiring carnage Scott 8)

Car is looking good, wont be long now
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Re: Karen's Imp Sport

Post by bks974c »

John A Ross wrote: Sun Jan 15, 2023 8:39 pm Thats a fair bit of wiring carnage Scott 8)

Car is looking good, wont be long now
That's my source of colour matched wiring, maybe one day I'll pull it all apart and sort it all out. :?

Then again where is the fun in that :D

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Re: Karen's Imp Sport

Post by John A Ross »

:lol: :lol: :lol: exactly

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Re: Karen's Imp Sport

Post by colimp66 »

Very nice Scott, Looking as good as new now. 8)
Top job!

Cheers
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Re: Karen's Imp Sport

Post by bks974c »

Fuel line connectors arrived today, so after fitting them and checked for leaks tried to start it.

Turned over but no firing :o

Led on the ECU dropping out too soon :? :?. Re read the instructions for the alarm and talks about ignition on 1 and 2, similar to the positions on a key switch so swapped them around at the connector plug.

Getting somewhere now, red led turns green so the ECU is seeing the crank sensor, but still not firing.

Let's check fuel, pump not running however we know that it's working fine as ran to test for leaks so must be electrical. Power good all the way up to the Inertia Switch but not beyond. After looking up the connections online, clear that one wire is in the wrong position but it was supplied that way when I purchased it. Pump now can be heard priming when ignition switched on. Progress.


Engine now coughs but doesn't catch, due to the start feature on the alarm it only holds the starter on for a short period - can't sit and crank until the battery goes flat like you can on the standard set up. However it is programable from 0.7 sec to 1.7 sec so I set it to max.

Stronger cough but still not catching so wedge brass toothbrush in to hold the throttle open and next time fires right up. Idle control valve just an adjustable bleed screw at the moment so set that further open.

Quick check to see everything still good and petrol leaking again :shock: :evil: , checked the new connectors and they seem fine but powering on the pump it's apparent that this time it's leaking from the fuel filter :cry: . Upon checking it, I've put it in back to front, it had been in and out many times while sorting the plumbing but no excuses my fault. After pressure testing it, put it back in the right way round. Don't think it liked been that way round as you could see the end casing bulging when the pump was on.

Set up the phone to record the "first" start up



Happy now, IT LIVES, get on with other works. Couldn't work out an easy way to have single sweep of the wipes so refitted Smartscreen intermittent module.



A good day :D

Scott
P.s. later on I checked the oil and none :o but not foreseeing any damage thankfully only the test engine.
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Re: Karen's Imp Sport

Post by bks974c »

On cold start, zero degrees, it was reluctant to start first time but helped by a little spray of brake cleaner (good substitute for Easy Start) so needs more fuel.

Brought up the laptop to change some of the cranking settings but would not connect with the ECU, tried various things but nada, so had a think and decided the one change since last connected (a year ago) was updating to windows 11 and maybe some link had been broken, reloaded the software and rewrote some of the settings offline.

The following morning it connected fine and uploaded the new settings and it fires up, still needs a tweek or two as stalls initially but after a couple of starts will idle but this is not the time to play around these setting, important to get hot idle spot on and then more on from there.

Been starting every time since. :D

Reorganise the workshop and on the ramp, time now to install brakes etc.

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Re: Karen's Imp Sport

Post by bazzateer »

Good progress Scott.
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Re: Karen's Imp Sport

Post by colin rooney »

Looks good mate a job well done

col
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Re: Karen's Imp Sport

Post by bks974c »

The sun is out so better get back on Karen's Imp if there is any chance she will get it back this year. Spent half a day playing around with the mapping for the fuel injection until it ran out of fuel which was probably as well as just going round in circles. So I put on my thinking head and decided something was up with the idle circuit - I had connected a solenoid valve where previously had been running a drain tap to alter the amount of air, all because I had misplaced the diodes.

Began by checking the wiring to the solenoid and right enough incorrectly connected so rewired it and now can hear it operate when ignition switched on. :D Just need to start the mapping AGAIN.

Also swapped the switched earths for the brake and reverse lights so they work as they should, made bracket for the gear linkage to operate the reverse lights.

Scott
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Re: Karen's Imp Sport

Post by bks974c »

Trying to Map the engine management system and getting nowhere, at idle the AFR's too high and even when I dialed them done to zero it would still idle so Houston we have a problem. It could be a leaking injector or just they are too large so even when dialled right down it's still dumping too large a quantity. Other possible problems could be too high a fuel pressure - I need to check that or an issue with the injectors location, they are pointing up directly at the back of the valve so in theory perfectly located, however any excess fuel is going to pool there. If the mixture is correct and fully atomised this won't happen but before I get to that set up it would upset the AFR's. Oh and need to check the pressure regulator, it's supposed to bleed extra fuel back to the tank at high vaccuum (idle) and therefore reduce fuel pressure - need to borrow the Fuel pressure tester kit I sold to my brother :D. So many variables :?

So I ordered a set of CBR 600rr injectors to replace the CBR 900rr ones, they have been recondition and are a direct replacement but flow 163 ccm rather than 258 ccm. The task of replacing them wasn't as bad as I was expecting as it was possible to change them insitu :D, also decided to install a pair of shut of valves in the fuel lines to act as service valves so I can work on the system without petrol peeing everywhere when I disconnect the fuel lines. Also ordered a new throttle cable as although new it was sticky.

While waiting on the bits I started on refurbishing the instrument panel, last time I built the car I modified it, this time putting it back to more or less stock which meant reassembling a Sport dash with oil pressure gauge and volt meter and while I was at it reset the mileage to zero, what was interesting at least to me was the car had covered 31000 miles which was more than I had thought it had, nothing compared to her sister who was doing that a year in her Chamois Coupe :shock:

Scott
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Re: Karen's Imp Sport

Post by moose »

Good work going on. Always impressed with what you try. Would be interesting to know the costs of the fuel injection system just for fun, if you were to get it set up perfectly with all the right parts and market as a bolt on kit what would have to be charged to recoup your money especially if you paid yourself a sensible hourly rate. Have you kept track of the hours you have spent on it? I know that is not the idea but people often mention how good fuel injection is compared to carbs and say someone should produce a kit.
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Re: Karen's Imp Sport

Post by bks974c »

Mike

I always reconned about £3k to do it, I've never added up the cost or time, it will only cause upset :o That's not why we do such things.

As to a bolt on kit, there are so many variables such as choice of ECU's, what throttle body set up to go for etc that you'd be on a hiding to nothing trying to please everyone. It is also doubtful whether the cost equals the benefits for a standard car, however definitely can make a cammy car much more tractable so marketing a kit towards those that have spent money on high end engine might work but regs probably prohibit in most forms of competition.

Scott
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Re: Karen's Imp Sport

Post by bks974c »

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Scott
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Re: Karen's Imp Sport

Post by Uncle Henry »

Scott, is that 10mm copper and water type service valves ?

AG
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Re: Karen's Imp Sport

Post by bks974c »

Andy

No, 8mm kunifer and Gas valves.

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Re: Karen's Imp Sport

Post by Uncle Henry »

Thanks ! 8) you've taken the levers off...

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Re: Karen's Imp Sport

Post by bks974c »

Uncle Henry wrote: Sun Apr 16, 2023 7:34 pm Thanks ! 8) you've taken the levers off...

AG
Yes, to prevent any accidental turning off.
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Re: Karen's Imp Sport

Post by oli »

Not sure I'm seeing that right - the fuel injection pipework of the engine hard mounted to the 'chassis' rail of the bodyshell :shock: ? Might be worth considering longer rubber lines from the valves?
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Re: Karen's Imp Sport

Post by bks974c »

oli wrote: Mon Apr 17, 2023 12:19 am Not sure I'm seeing that right - the fuel injection pipework of the engine hard mounted to the 'chassis' rail of the bodyshell :shock: ? Might be worth considering longer rubber lines from the valves?
Already considered that, return line is fine, rubber hose more than long enough. The feed line a bit shorter than I'd like but because of the hose flare being done last it dictated the length of the leg from the bend, as that was the minimum length that would fit in the flaring tool. Now I have made the pipe I can work backwards from the flare which will mean I can have a shorter leg and more hose.

Alternatively I can fit a straight union to the fuel rail and reroute, all WIP and with the service valves can be done with out much mess :D

Don't like the bend in the return hose, more likely to restrict the flow and tend to start cracking the rubber at these points.

Scott
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Re: Karen's Imp Sport

Post by oli »

:D
Main thing is that you are aware of the potential issue...

Keep up the good work.
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Re: Karen's Imp Sport

Post by bks974c »

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Happier with the fuel line, aesthetically it looks much neater as well as having less unsupported pipework.

All the engine management in its final positions (maybe :roll: ) ready for mapping.

Tighten up the front suspension :shock: thought it had already been done.

Fitted the seats and waiting on more bits to progress the dash.

I need to make a head lining and trim the interior but I'm thinking if Karen is happy to just use it, as is, let her use it over the summer and then finish off the interior over the winter along with the rebuilt original engine.

Scott
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Re: Karen's Imp Sport

Post by Uncle Henry »

Depending on what you might do pro-tem to the roof, it might get a bit hot in the summer without a headling to give a bit of "insulation"

AG
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Re: Karen's Imp Sport

Post by bks974c »

Andy

The roof is covered in https://www.ebay.co.uk/itm/185477077212 over the full length, so sure it will be OK.

Plus it's Scotland, we're tough.

And besides it is only HOT for a few day of the summer :lol:

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Re: Karen's Imp Sport

Post by Pog »

Truly lovely work Scott!

I went the modern panel air filter route on mine too. Colin Rooney did an amazing job restoring my sport airbox (was way beyond my welding capabilities!)- we ended up with a pipercross filter for a Fiat 500, fits like a charm once you round the corners off.

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Re: Karen's Imp Sport

Post by bks974c »

After going over the Clan for Imp Ecosse this coming weekend started on tidying up the wiring behind the dash.
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Re: Karen's Imp Sport

Post by bks974c »

Continuing with messing about
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Re: Karen's Imp Sport

Post by Uncle Henry »

Clever ! However, thinking about how fumes get dragged in on a standard Imp, I think the fresh air inlet perhaps shouldn't be from the horn box ?

AG
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Re: Karen's Imp Sport

Post by John A Ross »

Love watching this come together Scott. All very well done 8)
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Re: Karen's Imp Sport

Post by bks974c »

Uncle Henry wrote: Thu Apr 20, 2023 9:02 am Clever ! However, thinking about how fumes get dragged in on a standard Imp, I think the fresh air inlet perhaps shouldn't be from the horn box ?

AG
Andy

Your just thinking about convoying with other Imps, plenty of fumes then :o but your right maybe not ideal drawing air at low level especially when stationary in traffic. Intake level with exhaust :x

All will be good in a few years when everyone else electric :D in the meantime maybe I should fit a activated carbon pollen filter :lol:

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Re: Karen's Imp Sport

Post by John A Ross »

Scott

Any sensible way you could draw air from the rear of the bonnet/scuttle area strauight through bulkhead ?

Its quite a gap if you dont fit the rubber seal.

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Re: Karen's Imp Sport

Post by colimp66 »

Scott,
with you not finished the headlining, it could be a good idea to ft a snorkel intake to the roof?? :lol: :lol:

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Re: Karen's Imp Sport

Post by bks974c »

Like the Clan, ?
it just draws air from the cabin for the blower, a bit like recirculation on moderns however it also has a fresh air intake in the roof.

But then again it doesn't really have opening windows.

I think we'll be fine they way it is. :D

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Re: Karen's Imp Sport

Post by bks974c »

John A Ross wrote: Thu Apr 20, 2023 9:35 am Scott

Any sensible way you could draw air from the rear of the bonnet/scuttle area strauight through bulkhead ?

Its quite a gap if you dont fit the rubber seal.

John
Not a fan of the idea, likely to get fuel vapours in if you've spilt any fuel when filling.

Be fine as it is.

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Re: Karen's Imp Sport

Post by bks974c »

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Re: Karen's Imp Sport

Post by bks974c »

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