regulator theory?
Turbo Mini Forums

if for instance the fuel pressure regulator wasnt seeing boost pressure from the plenum, what would the outcome be? also, anyone know a part number for the ford trigger wheel pick up sensor? i got mine from a show so dont know the number to order a new one.

cheers

stu

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

The fuel pressure would stay at whatever it was set to, and not rise with boost

Yes i moved to the darkside

Instagram @jdm_brett

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

which is very similar to what is happening! cheers boys! think i will invest in a new reg and see if that sorts out the 3400k hissy fit.

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

Is the balance pipe still fitted to the carb? If so, if it has the minutest of holes you will suffer the same symptoms.

If the above is the case remove and blank it off on the side of the carburettor.

Own the day

or you could try the t piece trick

as some people blank off with a bolt in a pipe but I think personally its a bit of a bodge

check out the link to see t piece trick explained with pics

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=2103

Correction part lean off pipe, blank this and see, cheaper than splashing out on a new regulator.

Own the day

done the t piece trick. fairly sure the pipes are all blocked off correctly too. will double check. its so strange what its doing.

gonna get the fucker going though. the boost.......its a calling me!

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

Best of luck

what are your symptoms and has it been settup on a dyno?

Yes i moved to the darkside

Instagram @jdm_brett

as the revs reach 3400rpm whilst driving, in any gear, under any load, it coughs and splutters, backfires so i back off. it runs perfect under those revs. there is no rev limiter on the canems ecu set and i have swapped the needle from a bdd to a bdl to see and it makes no difference. 3400 is when it is coming onto boost fully.

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

just wild stabs in the dark

what SU spring is in the carb?
is it always as it hits full boost?
afr gauge? whats it do at this point?
does whipping out the choke at the point it happens cure it?
can you back off and gently rev through it making sure its not lean( if you dont have an afr gauge dont try this)
have you tryed a new coil pack/plugs/leads?

is it always the same rpm?
have a look here - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=468606

Yes i moved to the darkside

Instagram @jdm_brett

Is this a new build or was car running fine then this has just started doing this

Those symptoms are not the regulator. They are a carb issue, or possibly ignition.

An AFR would help see what's going on.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Yes i moved to the darkside

Instagram @jdm_brett

cheers lads. it is as it comes onto boost yeah. the boost gauge sits at -10 and gently creeps up with revs and as it goes over the zero mark is when it chops the power. it is as if it is hitting a rev limit but backfires and stutters too.

its a std turbo carb so running a std spring in it with 3 in 1 dashpot oil. i'm not running a AFR gauge at the minute. i was told it would really do anything as a decent rolling road set up should sort it out. the guy on the rollers told me to swap to a softer actuator so i slapped a T3 one on it.

i changed the figures on the ignition map too and it still does it at the same point. never thought of the choke brett. could try that too. trying to get an AFR set up without the bird knowing (mega wedding saving atm) might be tricky.

cheers for the help by the way. i feel quite alone up here in that there north east :(

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

its had new plugs and leads too. was gonna try a new trigger pick up just in case it isnt working at a certain speed.

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

3 in 1 is too thin.

If its backfiring through the carb it's lean. Out the zorst is rich.

In the 13's at last!.. Just

ok. will stick some normal engine oil in to see if that helps. it backfires out of the exhaust as far as i can tell.

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

Is the plenum all standard with the ring fitted and is the float bowl pressure feed pipe free?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

yep. std plenum and ring and the gasket is fitted correctly. that was my first thought....
its a mystery isnt it!

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops

that gt15 will out spool a t3 by a long shot, i had to go to quite some length to get enough fuel in soon enough with my gt20,
'Providing every thing else is in good order' im gonne guess the needle is whay ouut

Yes i moved to the darkside

Instagram @jdm_brett

think i'm gonna have to bite the bullet and just take it to boggys. i didn't wanna take it all that way to find out he couldn't set it up because something else was wrong.

balls to the blower!!!



1330,stage3 head, gt1549, canems ecu, S/C box and drops