Delta's Twentea-Twentea Break

[Tim Falce]

Originally Posted by delta

This must be getting boring for you all . Did few laps this morning and still had a missfire after one lap but this time it seems like a HT lead missfire .We have just fitted a STACK taco . If it’s playing up then the towel in going in and I’m having a break .

Has it got a rev limiter fitted?

[Gerard C]

2.5 PSI is far too low for my Capri for instance but I must admit that the float bowl capacity is too small for a 6 cylinder. I had some issues with the Omex rev-limiter and sent it to the bin. Happy since… The Stack Clubman turned us mad sometimes and on Jean Marc's E-Type, we had to add a small device if you're using a MSD ignition box, there's a lot of literature on the net about that. Joke apart, check if your coil is the right model, no ballast for instance.

[Gerard C]

You're a great driver and mechanic, you know your car/engine better than anybody, try some laps with the taco disconnected. You can check the needle valve too, must be the larger available (300, right?) and have a higher fuel pressure.

[Tel 911S]

Webers say 2 to 4 PSI . And any more will push past the needle valve .
Check delivery rate , should be 1 pint in 30 secs .Also important to get float levels right .
But as Tim said , has the Stack got a limiter fitted

[Gerard C]

I remember the Stack having the Tell-Tale or shift light system built in but no rev limiter.

Another usual suspect we dont suspect enough is the battery itself.

[MGDavid]

Originally Posted by Gerard C

I remember the Stack having the Tell-Tale or shift light system built in but no rev limiter.

Another usual suspect we dont suspect enough is the battery itself.

Good call - I've been wondering whether a volt meter might show something going on?

[Colin McKay]

Originally Posted by GORDON STREETER

We checked the fuel pressure and it has been tried at different numbers. It made no difference at all. I think we all agreed between 2.5 -3 psi is what is normal when running Weber side draughts. All through my racing career I have used 2.5psi and never had a problem

We always ran 3.5psi on the E-type.

[Gerard C]

David the thing can be vicious far beyond what you can expect. The voltage you read can be acceptable when cold for instance.

[Gerard C]

Iain if you're waiting for a good answer start from the beginning and ask yourself what has been done on the car, not only the engine, since it was working fine. We call that to mentally rewind the film…Remember the nice girl on the beach!

[delta]

Thanks Gerrard .Last winter i replaced the bag tank . We will go home and start again .I always use vacuum cleaner to suck in the tank . We think that maybe I have pulled all the foam up the tank to the outlet ..Thanks everyone for your ideas and suggestions . Keeping me going . I did have a drive in FJ race here at Oulton but the pinion has stripped on diff. Blooming motor racing !!!!!

[Tel 911S]

Originally Posted by delta

Thanks Gerrard .Last winter i replaced the bag tank . We will go home and start again .I always use vacuum cleaner to suck in the tank . We think that maybe I have pulled all the foam up the tank to the outlet ..Thanks everyone for your ideas and suggestions . Keeping me going . I did have a drive in FJ race here at Oulton but the pinion has stripped on diff. Blooming motor racing !!!!!

It is possible you have a fuel problem . Running for a lap or two then missing could be that the fuel is not getting through fast enough .
Check pickup in the tank for possible blockages , [ latest petrols can gum up if left for some time ] , check inline filter & pump filter if it has one .
Fuel pumps do not last forever .
Check delivery rate , [ at least 1 pint in 30 seconds ].

[Gerard C]

Iain, never give up is a good by word! As to CWP we had a bad joke when racing the 996, we "invented" the changing diff rate because we used to lose at least one tooth out of the pinion during enduro races! When you think about the cost of the thing, not mentioning labour… Easy to spot when draining the oil!
A clogged outlet can be guilty after few laps. Go on and please keep us informed.

[JasperClan]

Check the needle valves and entry pipes to carbs for debris. I had a similar problem a couple of seasons ago and it ended up being a piece of debris from break up of the end of the fuel pipe in the needle valve chamber being dragged down under load to block the needle valve.

Pete Richards

[delta]

It will take too long to tell you what we did to the car at Oulton. Summery now is I am going to be lent a pair of carbs for Silverstone finals. "keep taking the pills"

[Gerard C]

You dont need pills, Iain. Strange enough I've been convinced over the years that carbs can dye, specially crappy Solexes. We bought 3 sets of brand new PMO's a while ago, two were perfect… Last year I seem to remember you had issues with a battery, are you sure it went to the bin? Never give up!

[Gerard C]

My personal guru suggests you could apologize to the marabout. She asks if one day you made pee on a totem? Which side…*

[Mike Harte]

Iain, have you tried looking at the distributor condenser? They can some times account for a misfire or even not firing at all.

[GORDON STREETER]

Originally Posted by Mike Harte

Iain, have you tried looking at the distributor condenser? They can some times account for a misfire or even not firing at all.

I think that he has lost interest at the moment however it is an all electronic dizzy Mike.

[delta]

Sorry Mike . We have changed dizzy three times . Two luminition and now on pertronic . Will fit loaned carbs and test before we head off to Spa . If it happens .If all is well then I will enter Silverstone finals .

[Gerard C]

Did you try a Bosch or Beru or MSD coil?

[GORDON STREETER]

Now who can this man be on the right hand side of me and Mrs S ? A lot of you old timers would have bought certain articles off of his firm to make your car look and handle a little better a few years ago. He popped round for a chat in our garden and a meal at our local pub today

[morninggents]

Is it Jeff Howe?

[GORDON STREETER]

Originally Posted by morninggents

Is it Jeff Howe?

Sorry Peter but no, Jeff Howe died years ago but I remember buying exhaust manifolds off of him in the 60s ! I've known the guy in the picture since 1968 when my old girlfriend used to work for him. A lot of people would have bought his products and would know the name but might not have met him.

[Gerard C]

Tony Law?
Jean François Esso? Jean Michel Mobil? Christian Total? Pieter Swarovski?

[John Elwin]

Gordon Spice?