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Super Sports ignition timing

Posted: Wed Oct 07, 2020 6:59 pm
by ian cummings
Hi All,
Wasn't sure which board to pick so hope it's the right one!
I'm slowly working through sorting bits on my Super Sports and could do with some advise on what people are running with for ignition, from what I can find the TR engine should be timed static 4 deg BTDC, but then I've also been told the Super Sport needs to be set to 8 deg?

It also has a luminition optronic kit fitted any advise on what to replace this with as it seems to have an intermittent fault not always breaking.

cheers
Ian

Re: Super Sports ignition timing

Posted: Fri Oct 09, 2020 8:08 am
by Philip Tisdall
Ian,
Might be worth asking Billy or Jack Bellinger at JB Sports Engineering. They both have a lot of experience with Super Sports

Re: Super Sports ignition timing

Posted: Mon Oct 12, 2020 2:06 pm
by machiel kalf
Hallo Ian,

As far as I know it's 4 degrees BD.

Machiel.

Re: Super Sports ignition timing

Posted: Mon Oct 12, 2020 9:40 pm
by ian cummings
Thanks for the suggestion Phillip. & Machiel for confirming the 4 deg :-)

Ian

Re: Super Sports ignition timing

Posted: Tue Oct 13, 2020 6:24 pm
by jack bellinger
unfortunately this is not an easy question to answer
the most important thing is the ign timing at max revs not tickover
which the engine builder should tell you
normally not much more than 32deg BTDC at 5000
the advance curve on the distributor defines this as to what the static timing runs at
if every thing is totally std super sports 8 deg is a good start point but you must not exceed eng builders max advance
hope this helps
jack

Re: Super Sports ignition timing

Posted: Tue Oct 13, 2020 8:14 pm
by ian cummings
Thanks Jack,
as far as I'm aware it is still standard Lawrence Tune Super Sports, I have nothing from an engine builder to go on!
Ideally I need to get the car to someone who knows Super Sports to get it set up properly :wink: at the moment I'm just trying to get the car running reliably as it's had a few years of not being used.

Ian

Re: Super Sports ignition timing

Posted: Tue Oct 13, 2020 10:19 pm
by Jim Mountain
Hi Ian,

Give these guys a call,

http://www.massracing.co.uk/home/4580266969

There's not a lot they can't tell you about TR engines.

They have built a fair few of the TR engines, under the bonnets of the +4's currently racing.

They also have a rolling road in site.

Cheers Jim

Re: Super Sports ignition timing

Posted: Wed Oct 14, 2020 8:05 am
by machiel kalf
Hallo,

As Ian told, he has a "standard" Super Sports". I have no idea what camshaft is in this engine. But in my own car I have one made by Iskendarian. If you like I can give you the number. The engine works fine by 4 degrees. With loads of torque!

In an official document from Lawrence Tune, from I think 1961, I read the following for a "Competition prepared Triumph TR3 engine:

Ignition timing should be reset at 16 deg. B.T.D.C. if disturbed, and finally adjusted on the road.

In another document I read: 4 degrees.

All other, more modern prepared engines have, well that's what I think, different adjustments.

Ian if you like I can scan the documents and send it to your Email address.

Best regards, Machiel.

Re: Super Sports ignition timing

Posted: Wed Oct 14, 2020 4:56 pm
by jack bellinger
if your not sure about the eng spec
4 degrees would be the safest option

Re: Super Sports ignition timing

Posted: Wed Oct 14, 2020 7:15 pm
by ian cummings
Digging through the papers from Peter Evans that came with the car it seems he had a 'full race cam MTRF' from I & J Macdonald in 1973!

Machiel - if you don't mind emailing me the documents it would be appreciated, do you have my email address?


I will go with the 4deg as being as safe place to start from.

Re: Super Sports ignition timing

Posted: Thu Oct 15, 2020 5:23 pm
by machiel kalf
Hallo Ian,

Sorry, Ian I don't have your Email address. Can you help me with that?

Do you want a copy of both documents? Or just the one with the announcement of the 4 degrees. The Iskendarian camshaft is still the original 1965 +4 Super Sports. I have the Iskendarian catalog of that time. They even had 2 camshafts with a hotter profile. But, the idea behind the +4SS of that time was that you could use the car for shopping as well.

All the best, I look forward to your reply,

Machiel.

Re: Super Sports ignition timing

Posted: Sun Jun 19, 2022 6:18 pm
by Arthur Langell
my super sport, 5212, has a D grind cam which as far as I know was the stock cam

Re: camshaft +4 Super Sports

Posted: Mon Jun 20, 2022 1:50 pm
by machiel kalf
Dear Arthur,

Good to hear from you? At the end of the afternoon I shall dig in my archive will have a look in the catalog of Iskendarian.

BTW, is your +4 Super Sports registered in the MHR-register?

I'll come back to you as soon as possible,

Machiel.

Re: Super Sports ignition timing

Posted: Mon Jun 20, 2022 5:24 pm
by machiel kalf
Hallo Arthur,

Good news: I found the Iskenderian catalog. If you like I can make a copy of the page with the camshafts for the TR-engines. The one in my Super Sports engine has number TR 555.

I look forward to your response,

Machiel.

Re: Super Sports ignition timing

Posted: Wed Jun 22, 2022 3:58 pm
by Arthur Langell
Jedi Hopeful
https://www.britishcarforum.com/communi ... 20.111021/
found the above in saved documents As far as being registered on the MHR, I doubt it. It's hard to pass up any info! 5212 is the VIN number the engine block has E212 cast on it as well as Brilchrome