Hello i got a stage 3 saff with a t34 with .48 housing but it takes ages to get to full boost. but once on full boost it snaps your neck
Went to the 1/4 mile today and its a nightmare getting off the line. launched it with still no luck

Any ideas people
Cheers
Rich

 

do you mean it takes ages before it starts to make positive boost, or once it makes boost it takes ages to reach maximum boost?? if it's the latter then try a -34 actuator

 

I had a T34 with a .48 housing on it - always took ages to spool up. Turned out the wastegate shaft was bent, so the wastegate was not seating/sealing properly. Still saw more than 30psi with it though, just took it's time getting there.

 

try a 82 housing and you will never say your t34 is laggy

 

Funny, yet not very helpful

 

mine doesnt seem too bad and ive got a .63
not sure if a -34 makes it any better

what boost you running and what times did you get

carl

 

from 4500rpm it`s insane

 

ive got the same sort of set up and mines fine.

spools up well, doesnt seem atall laggy, well maybe abit, but not like you describe????

 

is it low comp? my mates low comp with the same turbo drives like that too

 

Yeah its running 7:2:1 comp , once on fully boost its a monster lol but its crap on the 1/4

rich

 

What actuators are you guys running with your t34`s

 

that was a good guess then, not a lot you can do but run BIG BOOST like its meant to and a turbo to suit or raise compression for better off boost power. You may be able to have more of the boost mapped in further down the revs to help illiminate some lag. I bet its fine between gears when on full boost though is it?

 

tighten the preload a touch on the actuator it makes a world of difference. The tighter it is the more response u will get mate. (obviouslly u will get a bit more boost but its worth it) When i put my -34 on it was not very tight at first and was ultra laggy but very smooth when it came on boost. After tightening the arm it become very snappy and back end happy

 

My saph's runnin low comp and a t34 with a .55 exhaust housing and a -34 and it not really that laggy at all.

To be honest mate id sugest getting it mapped and setup correctly rather that just trying to adjust preload on the actuator and stuff like that.

 

as above this is the best way to do things but just check that the arm is nice and tight as if it has been off the car for any reason or somebody has been messing with it then its not going to be doing its job properly......but be carefull.

btw can i ask what kind of actuator it is ?

 

https://passionford.com/forum/viewtopic.php?t=151577

check this first of all

 

When you say the car is laggy, when exactly do you start to see positive boost in 5th and when do you get maximum boost?

I have a T4 (no that is when you get to know the meaning of laggy!) and I get positive boost by 2800 rom and maximum (1.8 bar) at 4000 rpm. Car has 7.5:1 c/r and 435 bhp.

 

whit 7.2 comp,bd14`s ,ported head and jenspeed(norwegian tuner)chip,670cc injectors,
netic super 60 ar82(largest t3 model) the boost start at 3500rpm,max boost at 4000rpm. whit stock cams max boost at 5000rpm.

 

That does sound a little laggy compared to mine, bearing in mind I have std cams......

 

its not so bad really,was a big diffrens when I fitted the bd14`s.
rev limit is 7900rpm so it good on revs

 

mines on std compression with a .63

i get full boost around 4kish with around 10 psi at just over 3k

 

more tuning on the way now,820cc injectors,new chip,new intake whit 3 inc trottle,3 fuel pumps

hopeful we see 500+ on the dyno and maybe more....
(engine was on the rollers in 2wd cossie and gave 403.3 at the wheels whit std cams) sitts in 4x4 now

 

keep her laggin....then your laughin after

 

 

Just seen this

I had a similar problem to this with my car the once.

Mine turned out to be that i wasn't getting full throttle.
Get someone to sit in your car and press accerator to the floor(engine turned off) and then see if it is opening the throttle fully in the engine bay.

Once mine had full throttle it was a totally different car to drive

 

ive got a t34 .48 and to be honest it aint very laggy at all! i was pleasantly surprised!

chop

 

My last engine ran a t34 with .48 and cutback turbinewheel on a portet head and balanced bottom end. It was just slightly more laggy than with the std t3 turbo.

Check your actuator.
How much pre tension do you have on it?