New engine- first start - LCB centre branch glowing red!!!
Turbo Mini Forums

Guys, I finally got my new motor started this evening.

TO my amazment, it started first turn of the key, instantly

http://www.youtube.com/watch?v=jYLvIRMnJGk

As you can see, I've got no cooling system on there yet, but I was under the impression that this was OK just to fire the engine briefly, having read this article years ago:

http://minispares.com/Articles.aspx?ty=ad&aid=301

I followed that process 5 years ago when I built the last engine, and it did me just fine.

I only let the engine run for the duration of the vid above, but after just 30 seconds the centre branch of the LCB started to glow red!

The 45 was previously fuelled for a MSPD trackday cam (270/270 with 8mm lift apparently), and this is now running a kent 296 scatter. Timming was setup exactly as it came off the old running engine to within 1 degree.

Speaking to AlexF he's suggested it could be super lean or very advanced, but could either of these be so extreme as to make the centre branch glow red after 30 seconds? the other two wern't very hot at all.....

Am I over reacting? Or would the excessive heat suggest something more serious is wrong?

Cheers

Nick

Mr. Prawn, the friendly Crustacean- slowly making steps towards forced induction.

Also, appologies for my arse in shot!

Mr. Prawn, the friendly Crustacean- slowly making steps towards forced induction.

i had this on my original mini when i first got that going. it stopped after i stopped the airleak it had didnt adjust the fueling maybe that longshot but thats my experiance of it.

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-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

Retarded ignition?

OK cheers guys, so it's more likely to be lean / crazy ignition rather than something more arkward like cam timming?

Mr. Prawn, the friendly Crustacean- slowly making steps towards forced induction.

check your tappets are set properly, i once had one branch of a exhaust glowing, (on a motorbike, but still) and that turned out to be a exhaust valve nipping up and jamming open when things warmed up. Probably not the problem, but worth knowing!!

And on the 7th day........... God created turbochargers!

Mine glows - I dont worry

I seriously doubt it!

after 30 seconds at 2000rpm Paul?

You use a 45DCOE don't you paul?

Any tips on altering fuelling just so I can get it running safe enough to take it for a little spin?

Mr. Prawn, the friendly Crustacean- slowly making steps towards forced induction.

The exact jeting can only be determined on a rollers Prawn but if you use these as a base line it will be more than safe enough to take for a spin.

Idle jet : 55F8
Main jet : 180
Emulsion Tube : f2 or F11
Air corrector: 140

Idle fuel ajustment screws 2 turns out.

Ignition should be set to 28deg all in at 4500 rpm

odd that its centre only, that could point to a valvetrain issue on 2-3

But more often than not, glowing manifolds etc are down to retarded ignition timing.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Definitely sounds lean as it is popping back through carb....although usually you need to be on the rich side for startup or the DCOE won't run. It probably would have stalled shortly if you tried to keep it going due to leaning out.

Eric
my pics.... http://www.fototime.com/inv/7AAF37CF3EFA956

check fueling but like sprocket said i would put my money on ign to retarded

always looking for them bigger bunches of bannanas

Third that on the ignition being to retarded.

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1/4mile in 13.2sec @ 111 terminal on 15psi

i like your underpants

If I’d known your pants preference I’d have worn them when you came round!

You were right about the ignition chaps.

Bring an engineer, it seemed logical to me that all things that turn must turn clockwise. Obviously this isn’t the case with the dizzy (which I knew- just having a blonde moment) so when I set it up firing at TDC, and advanced it 6-8 degrees for static timing, I turned it the wrong way! So it was firing maybe 8 degrees ATDC. Making everything red hot.

Sorted the timing out, and put a rad on it, and it’s running REALLY nicely now. Going to take it out for a spin this evening and see what it’s like!

Mr. Prawn, the friendly Crustacean- slowly making steps towards forced induction.