Calais Turbo

Nukz · 10-03-10, 13:29

Hey guys, having a little prob with the vl thats doin my head in! car's been driving beautifully on 18psi, and normally lights up all gears. (manualised auto)

However all of a sudden on sunday, i gave it a hit in first expecting bushfires and car didnt really go anywhere. Turbo spool shifted up around 1000rpm in the rev range (more lag) and it only hit around 10psi instead of 18. 2nd and 3rd gear are still perfect. First thing i thought was slipping converter but it doesnt make sense that it only happens in first. as slipping converter usually affects all gears.

i checked the gearbox linkage to make sure 1st was properly engaging and not caught between 1st n 2nd and its perfect. checked all cooler piping etc and everythings fine. Any ideas or anyone had this happen before coz im absolutely stumped??

elz · 10-03-10, 15:40

if youve said that the problem is only in 1st gear

i doubt it would be anything mechanical ie motor wise
if it was mechanical, id say it would effect all gears
its probly box
but im guessing maybe even computer?

Nukz · 10-03-10, 15:43

nah man don't think its anything ignition related, it wouldnt be restricted just to one gear. the box still shifts perfect between gears so i stronly doubt the box is shagged aswell. thats why im puzzled

Munro- · 10-03-10, 16:01

You could still have a boost leak somewhere. Slow boost, but enough boost later in the gears.

Check your lines, I think you will find that one of them will be off somewhere.

Nukz · 10-03-10, 16:02

nah mate thats the first thing i checked. all cooler pipes are tight and sealed. all vac hoses are clamped and not split. i wish it was something that simple

peter_fc · 10-03-10, 16:21

Blocked cat?

<NICK> · 10-03-10, 16:25

Quote:

Originally Posted by peter_fc

Blocked cat?

x2

Nukz · 10-03-10, 17:11

nah definately not a blocked cat....thats not possible lol

Munro- · 10-03-10, 18:16

can you give some more info on your setup? Aftermarket ecu? Also any information on how it felt/sounded when you flattened your foot?

Psi_Wagon · 10-03-10, 21:16

may have overheated the 1st gear band in the auto

HTURBO · 10-03-10, 21:26

Might have to tighten your Automatic transmission band.

Nukz · 10-03-10, 22:05

thats what im thinking. gonna take it back to the tranny builder over the weekend and see what the go is

theVLguy · 11-03-10, 18:59

For the band to be slipping enough to cause boost drop, your fluid would stink like ****.

And it would definately flare on gear change.

what Boost control method are you using.

Nukz · 11-03-10, 19:08

running a psr 50mm gate n turbosmart boost tap. but the only reason boost is dropping is coz my turbo normally hits full boost by 4500-5000rpm anyway, so because its slipping with less load on the motor, boost will take more revs to build and so it only gets to around 10psi before its time to change into 2nd. well thats wat i reckon anyway. when i get time this weekend i'll suss it out

10-03-10, 13:29	#1
Nukz Gold Members Join Date: 20-06-07 Location: Sydney, westside Car: PSI-30L Trader Rating: (13)	Got me stumped! Hey guys, having a little prob with the vl thats doin my head in! car's been driving beautifully on 18psi, and normally lights up all gears. (manualised auto) However all of a sudden on sunday, i gave it a hit in first expecting bushfires and car didnt really go anywhere. Turbo spool shifted up around 1000rpm in the rev range (more lag) and it only hit around 10psi instead of 18. 2nd and 3rd gear are still perfect. First thing i thought was slipping converter but it doesnt make sense that it only happens in first. as slipping converter usually affects all gears. i checked the gearbox linkage to make sure 1st was properly engaging and not caught between 1st n 2nd and its perfect. checked all cooler piping etc and everythings fine. Any ideas or anyone had this happen before coz im absolutely stumped?? __________________ IIIR "I choose NOT to run!" Last edited by Nukz; 10-03-10 at 13:31.

10-03-10, 15:40	#2
elz Player Join Date: 21-01-10 Location: Sydney, parramatta Car: vl Trader Rating: (0)	if youve said that the problem is only in 1st gear i doubt it would be anything mechanical ie motor wise if it was mechanical, id say it would effect all gears its probly box but im guessing maybe even computer? __________________ 80b Last edited by elz; 10-03-10 at 15:42.

10-03-10, 15:43	#3
Nukz Gold Members Join Date: 20-06-07 Location: Sydney, westside Car: PSI-30L Trader Rating: (13)	nah man don't think its anything ignition related, it wouldnt be restricted just to one gear. the box still shifts perfect between gears so i stronly doubt the box is shagged aswell. thats why im puzzled __________________ IIIR "I choose NOT to run!"

10-03-10, 16:02	#5
Nukz Gold Members Join Date: 20-06-07 Location: Sydney, westside Car: PSI-30L Trader Rating: (13)	nah mate thats the first thing i checked. all cooler pipes are tight and sealed. all vac hoses are clamped and not split. i wish it was something that simple __________________ IIIR "I choose NOT to run!"

10-03-10, 16:21	#6
peter_fc Advertiser Join Date: 07-02-10 Location: NSW, eastern suburbs Car: Trader Rating: (0)	Blocked cat? __________________ Leondis Racing - Speedflow braided line and fittings (02) 9662 6344

10-03-10, 17:11	#8
Nukz Gold Members Join Date: 20-06-07 Location: Sydney, westside Car: PSI-30L Trader Rating: (13)	nah definately not a blocked cat....thats not possible lol __________________ IIIR "I choose NOT to run!"

10-03-10, 21:16	#10
Psi_Wagon Wagon > Sedan Join Date: 15-06-03 Location: Melbourne, North-West suburbs Car: VL, VL, VL, VH, Mightyboy x2! Trader Rating: (39)	may have overheated the 1st gear band in the auto

10-03-10, 21:26	#11
HTURBO Pushing Limits Join Date: 07-09-08 Location: VIC, West Gippsland Car: 05 VZ HSV Clubsport R8 daily / VL calais turbo manual / 05 CRF450R Trader Rating: (2)	Might have to tighten your Automatic transmission band.

10-03-10, 22:05	#12
Nukz Gold Members Join Date: 20-06-07 Location: Sydney, westside Car: PSI-30L Trader Rating: (13)	thats what im thinking. gonna take it back to the tranny builder over the weekend and see what the go is __________________ IIIR "I choose NOT to run!"

11-03-10, 18:59	#13
theVLguy Gold Members Join Date: 21-05-06 Location: Brisbane, southside Car: VL turbo Trader Rating: (4)	For the band to be slipping enough to cause boost drop, your fluid would stink like ****. And it would definately flare on gear change. what Boost control method are you using.

11-03-10, 19:08	#14
Nukz Gold Members Join Date: 20-06-07 Location: Sydney, westside Car: PSI-30L Trader Rating: (13)	running a psr 50mm gate n turbosmart boost tap. but the only reason boost is dropping is coz my turbo normally hits full boost by 4500-5000rpm anyway, so because its slipping with less load on the motor, boost will take more revs to build and so it only gets to around 10psi before its time to change into 2nd. well thats wat i reckon anyway. when i get time this weekend i'll suss it out __________________ IIIR "I choose NOT to run!"