Fitting an Accuspark

MGB discussion board for Roadster and GT classic car models.
User avatar
jonahnaylor
Posts: 47
Joined: Mon Oct 07, 2013 10:35 pm
Location: York, United Kingdom
Contact:

Fitting an Accuspark

Post by jonahnaylor » Wed Oct 16, 2013 7:38 am

After watching this video:

https://www.youtube.com/watch?v=2lcx_Qr0KyM" onclick="window.open(this.href);return false;

I'd really like to fit an accuspark to my MGB GT '78. The procedure looks ok but my concern is when the timing in the video changes and he has to make an adjustment...

I wanted to check before I buy one of these kits - can I just drop it all in and it will work, or do I risk messing up my car's timing and thus making it run irregularly? I wouldn't mind, but I'd be swapping these components roadside due to not having a garage so I don't want to create too much trouble for myself! Thanks for any advice.
--
Yorkshire website design, domain registrations & hosting:
https://www.yorkshire.hosting

User avatar
adamliptrot
Posts: 28
Joined: Mon Oct 07, 2013 11:44 am
Location: Cleveland, UK
Contact:

Re: Fitting an Accuspark

Post by adamliptrot » Wed Oct 16, 2013 2:55 pm

Are you going for the full set-up i.e. replacing your dizzy, or just replacing the points?
I've got the point replacement and it was easy if a bit fiddly (see http://www.incayellow.com/posts/fitting-an-accuspark" onclick="window.open(this.href);return false; ). If you have a timing light it'd be worth sorting out your timing afterwards.
More about my B: http://www.incayellow.com

User avatar
jonahnaylor
Posts: 47
Joined: Mon Oct 07, 2013 10:35 pm
Location: York, United Kingdom
Contact:

Re: Fitting an Accuspark

Post by jonahnaylor » Wed Oct 16, 2013 3:29 pm

adamliptrot wrote:Are you going for the full set-up i.e. replacing your dizzy, or just replacing the points?
I've got the point replacement and it was easy if a bit fiddly (see http://www.incayellow.com/posts/fitting-an-accuspark" onclick="window.open(this.href);return false; ). If you have a timing light it'd be worth sorting out your timing afterwards.
Hi thanks Adam, your link makes it look straightforward enough (though you always make a nice job of such things so no wonder! haha).

I didn't fancy replacing the dizzy as I thought the kit similar to what you've used would work well enough and also is cheap to pick up.

I can cope with fiddly (I'll make sure to use a magnetic screwdriver!!) but I don't have a timing light and haven't really delved into tuning/timing/mixture work yet on the MG - so I suppose that's what scares me. Is it worth getting a timing light and how hard is it to adjust the timing using one? Again, bearing in mind I'm out in the British elements with no garage hah.

Thanks for the advice.
--
Yorkshire website design, domain registrations & hosting:
https://www.yorkshire.hosting

User avatar
adamliptrot
Posts: 28
Joined: Mon Oct 07, 2013 11:44 am
Location: Cleveland, UK
Contact:

Re: Fitting an Accuspark

Post by adamliptrot » Wed Oct 16, 2013 5:35 pm

If you don't move the dizzy there should in theory be no need to change your timing. TBH I can't remember if I had to afterwards or not.
I'd try it and see how it runs - you can always pop the points back in if the timing is way out / it runs rough.
More about my B: http://www.incayellow.com

User avatar
MGB73
Posts: 5
Joined: Tue Oct 08, 2013 5:35 pm
Location: North Yorkshire

Re: Fitting an Accuspark

Post by MGB73 » Thu Oct 17, 2013 4:02 am

I changed mine for the Accuspark unit and yes it was that straightforward, albeit fiddly.

When i bought the unit i also bought a timing light from the same people - i think there was some sort of bundled deal going on. I can remember using the light, but can't remember whether i needed to adjust the timing or not.

I had previously bought a cheaper alternative to the Accuspsark off Ebay but never had much success with it. However, i seem to remember i'd connected the + & - wrong way round at one point thanks to a bit of creative wiring by the PO so may have blown the unit (the instructions did expressly point out not to wire it wrong way round :( )

If you get a break in the weather you should be ok doing it in the street, and as said previously, the worst case scenario is that you end up putting the points back on.

User avatar
jonahnaylor
Posts: 47
Joined: Mon Oct 07, 2013 10:35 pm
Location: York, United Kingdom
Contact:

Re: Fitting an Accuspark

Post by jonahnaylor » Thu Oct 17, 2013 6:07 am

Hi thanks I'll give it a try! I'm always a little over cautious but sometimes you just have to bite the bullet (or the condenser!!) and get on with it!

Have either of you definitely seen any performance/running improvements since the change?
--
Yorkshire website design, domain registrations & hosting:
https://www.yorkshire.hosting

User avatar
MGB73
Posts: 5
Joined: Tue Oct 08, 2013 5:35 pm
Location: North Yorkshire

Re: Fitting an Accuspark

Post by MGB73 » Thu Oct 17, 2013 8:51 am

Not particularly.
I found it a pain to adjust the points and was also experiencing pretty lumpy performance. The Accuspark was just a way of trying to eliminate problems.
I've not had the car running this year but intend making it this winter's project to get it fettled.
Brakes to sort out next!

User avatar
adamliptrot
Posts: 28
Joined: Mon Oct 07, 2013 11:44 am
Location: Cleveland, UK
Contact:

Re: Fitting an Accuspark

Post by adamliptrot » Thu Oct 17, 2013 12:42 pm

No improvements, but I'd burnt through 3 condensers in short order with points (new ones just don't last), so this was to take that part out of the equation rather than improved performance expectations or any dislike of points.
More about my B: http://www.incayellow.com

User avatar
jonahnaylor
Posts: 47
Joined: Mon Oct 07, 2013 10:35 pm
Location: York, United Kingdom
Contact:

Re: Fitting an Accuspark

Post by jonahnaylor » Thu Oct 17, 2013 11:03 pm

Hi again - after some research on Accuspark vs Powerspark vs Pertronix Flamethrower conversion kits for MGB and other brands too!! I found a lot of opinion that many of these electronic ignition conversion kits are made by Britpart (via China...) and simply rebranded as 'Powerspark' etc.

I can now confirm after contacting Britpart that this isn't the case! They advise NOT to use part number ETC5835K electronic ignition conversion kit in an MGB as it will work but then may burn out quickly!!!! This is due to the ignition kits all having very slightly different resistances set when made for specific use in the right car. Otherwise just one kit would be sold to fit all.

I originally ordered the ETC5835K kit to use with my 45d4 Lucas distributor, but I've cancelled the order and have now instead ordered with Powerspark instead.

I thought I best update this post just to let anyone reading know that even though the Land Rover kits work they're not recommended by either Britpark, Rimmerbros (who stock Land Rover and MG parts) or the MG Owners Club. I sent an email to all just to double check before my order was shipped out.

Thanks to Simon also at Powerspark for his great customer service and advice.
--
Yorkshire website design, domain registrations & hosting:
https://www.yorkshire.hosting

User avatar
jonahnaylor
Posts: 47
Joined: Mon Oct 07, 2013 10:35 pm
Location: York, United Kingdom
Contact:

Re: Fitting an Accuspark

Post by jonahnaylor » Thu Oct 24, 2013 2:20 pm

Hi just an update on how fitting went.

I've now fitted the electronic ignition unit, it took a lot longer than an hour due to unforeseen problems!!

One was having to re-solder the red wire from the new kit due to having no terminals left on my fusebox and having to use a 'piggy back' style connection.

The second issue was when I took the base plate out from the old points system, a wire broke off in my hands! The internal earth wire that sits under the baseplate screw was very frayed and disintegrated. I had to do a make-shift patch up job with some tape and I re-crimped the connector to what wire was left in there! Is this wire now even needed with Electronic Ignition?

I hope I don't have any issues now and everything stays nicely in place.

On ignition the car fired up but struggled, so I then also had to try have a go at timing it with a timing gun. Originally before the ignition conversion the car was running at 15 degrees before TDC according to my markers, but with the new conversion kit in I've dialled this up a bit to only 10 degrees BTDC - I've not been out for a drive yet due to not having time but the car is idling well.

I'll report back if I need to increase the timing speed but does anyone have any opinion on the best idle timing with the vac advance capped? Reading around on the internet, some say 10 degrees is too slow and others say 20 degrees or 15 etc is too fast... Also my car is idling at 1,000rpm which I've read is recommended these days but any opinions on this too?

Thanks for any help.
--
Yorkshire website design, domain registrations & hosting:
https://www.yorkshire.hosting

Post Reply

Return to “MGB Roadster & MGB GT Forum”

Who is online

Users browsing this forum: Google [Bot] and 3 guests