Evening all, my brand new starter seems to bind occasionally, and it has been suggested that this is not an uncommon problem with this combination,
and that people have used a geared or hi-torque starter (it's an LRS345 if that helps). Does anyone have any suggestions as to where I could fid
such a beast?!
Cheers
Adrian
are you sure its not fouling the sump if its a silvertop this will put a strain on it if so. I have had my sump modified to get over this problem only have a standard starter though
Is this only happening when the engine is hot ?
Too much ignition advance at cranking speed ie 0 to 500 rpm
It usually only happens when cold, and the car has just had a full mapping session at Atspeed, so I would be very surprised if the cranking advance
was incorrect?
Cheers
Adrian
in that case prepared to be very surprised the number of times over the years I have heard "can't be that that is stopping the car from
starting the car has just had a rolling road session" it more or less confirms it the advance curve needs sorting at cranking speeds.
Back in the days of old fashioned centrifugal advance distributors it used to be very common problem on nodded cars especially Fords, wear in
the distributor mechanism makes it worse.
In those days the only way to fix it was to dismantle the distributer and tweek the internals, these days with electronically adjustable timing
maps it is much easier to fix.
quote:
Is this only happening when the engine is hot ?
Hmmm, interesting, but if that was the case, wouldn't this happen all the time, not just at cold start?
Cheers
Adrian
At cold start you have the additional load on the starter caused by oil drag which is one of the reasons modern engines run on 5w/30 engine oils.
Old fashioned 19060s technolgy oils such as 20w/50 as well as being engine killers cause a lot of oil drag at cold starts, excessive oil drag +
kick back from excessive ignition adavance = too much for the starter.
interesting thread, this has happened to me on and off in the last few years
I always assumed that I had 'over pumped' my carbs before turning the key - causing the petrol in the bores to hydraulic lock... However,
that was just a guess based on no particular knowledge, just me speculating really.
Waiting a few seconds usually clears it.
An engine with high compression, reasonable to wild cams and to much ignition timing while cranking can give the starter a very hard time or even
stall the starter completely.
The cold cranking mixture can also tip it over the edge if it's to rich with a bit to much timing.
More often than not most rolling roads only optimize the normal running fuel/ignition maps, and the starting/warm up compensation maps don't get
touched from default settings. Not to surprising when you really only get one shot at setting them up each day (it's not actualy cold again!).
Ian
I had the same problem with a new 2.0 black top and the standard starter. Very intermittent, it would fail to crank fast enough randomly when hot. I
replaced the battery and replaced the starter with a reconditioned one but the problem remained. The car had been on the rolling road so I tried
retarding the ignition, still no use. I bought a Ford Powerlite starter from LA Distribution, Belfast which bolted straight on. This solved the
problem and the engine has never failed to turn over since. I'm running Omex and Jenveys with 171BHP at the crank.
Bill.
Bill, I did just what you have said today, ordered a powerlite unit from Rally Designs, will be here next week, hopefully this will sort the
problem!
Cheers
Adrian