car went to novatech in slough last friday for some rolling road set up of the carbs.
I had it running no. smoke, all good for once, but it popped and farted. previous week I'd put seals on the exhaust valves.
aim was to make sure it was running properly for that nats.
stuck at the lights in slough it nearly gassed me. Smoke back with a vengeance. None on the way!!!! but I'd booked the Rolling road time so in it went
too small on the idle jets was causing problem at 3000 rpm
that fixed and it all balanced it came up with 240 BHP graph still going up when he jacked it in at 5200
VERY much not what I'd hoped for.
however drives lovely and comes on cam at 2500 like its been kicked up the ass
consensus was needs a re-curve on the dizzy and needs the oil control issues sorted, both hugely detrimental, can't run proper advance due to oil
advance at low rpm is too small curve is too long
Oil is playing havoc with ring seal and fouling plugs
but at least my carbs are now as right as they can be given the issues
decent lambda reading across the rpm range.
aim was to pick it up Saturday and get it MOTed
had to go to Essex and get back in time
and as I found out yesterday I got caught doing 100 MPH on the M25 trying to get back (potential ban, max fine £2500 automatic court case)
I was an idiot yes but so were the people doing 60 in the outside lane with people undertaking. (I didn't I just blew by when they eventually pulled in and suffered for it)
anyway missed picking it up and MOT
picked up on Monday morning and drove to work smoke is terrible
rolling road say stem seals, do them again and hope
fedexed a new set from felpro
fitted wed/Thursday
took it out for a spin
Smoke. less smoke but smoke
then on the M3 back into London last night
oil pressure dropped. low revs good to exceptional higher the RPM the worse it got cruised into garage at very low rpm.
turns out I've used 3/4 of a litre in less than 100 miles
25 quid on oil and got it home
so No car at NATS
possible No me at NATS if I get banned
I have a serious oil control issue.....
and its Rings again.. before Roger pops up and says they are in upside down
they are not, they have dots on, its obvious which way they go...
I'll pull it out tomorrow
order a new gasket set, new inlet gaskets, new rings, new main seal, and try again.
20 thou over pistons take 20 thou over rings... YES Yes they do...they do.
pistons and rings by same manufacturer. side play in ring grooves was to spec
bore size checked with T shaped gauge and a decent 1970s ex engineering shop micrometer that I checked on a gauge block (always greased cleaned for use and re greased. not rusty, always cross ref with crap electronic vernier
if need be ill break out the bore gauge used originally again.
It obvious that no. 3 is a huge contributor to the smoke
its obvious that all 6 have oiling issue.
unknowns.
Has my abortive attempt to tune carbs, again washed bores
has my new sump with solid baffle caused oil flow back issue and huge windage.
have I cooked the rings running too lean too rich or too hot for too long. hence no ring pressure from the oil/expander??
its just a mess, its obvious that I have now fixed the wrong problem twice or have failed to fix the actual problem due to too many unknowns...Embarrassing annoying frustrating fed up
On top of that builders in/no kitchen/ no dining/ no living room, living in spare room with microwave, mum getting ready for chemo-therapy and father in law recovering from heart attack
work is Bananarama!
You know what
I'm going to the pub.....I may be some time
Dave
. I thought it might have been someone a bit more local.
