Need to shorten turbo lag time HELP

[garyk1970]

setup; external turbonetics wastegate on a 3'' down pipe,t64e p trim turbo and remote control knob to control boost in the console......theres alot of lag.......boost is 20psi.....
is there a way (other than larger TC) to shorten the lag time? i can floor car from stand still and count to 4 before boost come in to 20 psi...... ie;adjust the seting on the wastegate,then adjusdt the knob control??

 

[turbo nasty]

Possibly remove the boost controller from inside the car and put it closer to the turbo.

Just to see remove the line from the actuator and see if it spools any faster. Of course waching you PSI when doing so.

How big was the stall?

And is it a BB turbo?

 

[garyk1970]

haha, i knew you would find this:biggrin: .......i agree on the length of the vacuum line to control...........
havent tried to figure out the stall...texting the owner now....no ball bearing.........
going to install 160 stat tomorrow and move controller.........

you got wipers?

Possibly remove the boost controller from inside the car and put it closer to the turbo.....

Just to see remove the line from the actuator and see if it spools any faster. Of course waching you PSI when doing so.

How big was the stall?

And is it a BB turbo?

 

[turbo nasty]

Man they have been working. fine so far I just need to pull it apart and just do the fix and be done. The door locks on the other hand work then dont..hit or miss. and the cruise will probably stop when i need it to work on teh way home after work tonight.

IMO If the car has a stock convertor then I believe thats contributing to the problem. Ask also what A/R the hot side is as well.

 

[bison]

Are you planning on running more boost or enough to push the car to 120+ trap speeds? You may need a converter and you would definitely be better off with a Garrett .63 housing on that turbo if your strung on an inadequate converter. The converter will make the most difference. You need a 3000-3200 at zero boost/vacuum to get that thing going. No other band aid will come close to a proper converter

 

[garyk1970]

Man they have been working. fine so far I just need to pull it apart and just do the fix and be done. The door locks on the other hand work then dont..hit or miss. and the cruise will probably stop when i need it to work on teh way home after work tonight.

IMO If the car has a stock convertor then I believe thats contributing to the problem. Ask also what A/R the hot side is as well.

3000 stall..............p trim????

 

[turbo nasty]

Is it a .63 a/r hot side?

 

[yullose]

Aka "Insta-spool"

 

[Mr.Spool]

garyk1970,check for all leaks,warped flanges,cracked headers etc,a smaller exhaust housing on the turbo,a good quality converter,nitrous.pick one but all 3 are fun

 

[bison]

Aka "Insta-spool"

I prefer the carbon fiber thank myself. Some others prefer the non sulfur N2O

 

[yullose]

I prefer the carbon fiber thank myself. Some others prefer the non sulfur N2O

Yeah those CF bottles are the cats whiskers... but I just couldn't justify the extra 2lbs capacity and half the weight at twice the bottle cost.

I could keep two full aluminum bottles in the trailer for what one of those CF bottles cost.

 

[MidGaGN]

This is from "back in the day" (2003) on these forums...


http://www.turbobuick.com/forums/turbos-turbo-related-parts/107927-stall-speed-t64e-turbo.html#post2281372

 

[garyk1970]

thanks for the replys guys.......moved the control to the wastegate no difference.......
while doing so,I noticed a vacuum line loose on the wg,wire tied it,and lag is alot better now even with the control re-installed in the console.
car has a 3000 stall (car starts spinning the tires at spool-up by 2600)....i dont recommed any bigger for street use,ive driven some cars with larger stalls and IMHO takes away too much drivability.......
does it sound like the stall is a true 3000??

 

[TurboDave]

IMHO, if you can spin the tires at 2600 you've got WAY too tight a converter for a big shaft 64E like you have!

I've got a 3200 stall on my PTE44/.85 and it's just enough.

If you rode in other cars with 3400 stall and found them not streetable, I'd submit to you that they either were far more than 3400, or were faulty.

a 3400 converter should not affect driveability at all.

Unless you're willing to move up on stall considerably over what you have, you're never going to get the lag out.

 

[garyk1970]

IMHO, if you can spin the tires at 2600 you've got WAY too tight a converter for a big shaft 64E like you have!

I've got a 3200 stall on my PTE44/.85 and it's just enough.

If you rode in other cars with 3400 stall and found them not streetable, I'd submit to you that they either were far more than 3400, or were faulty.

a 3400 converter should not affect driveability at all.

Unless you're willing to move up on stall considerably over what you have, you're never going to get the lag out.

thanks Dave. im not sure what the stall was on the one car that i drove,but it seemed to rev to 3000 rpm before the car would even start to move....
on this car (its Gabes' car (MidGaGN's)car...).......
in his car the TC isnt big enough then....thanks for the help.......

 

[bison]

thanks for the replys guys.......moved the control to the wastegate no difference.......
while doing so,I noticed a vacuum line loose on the wg,wire tied it,and lag is alot better now even with the control re-installed in the console.
car has a 3000 stall (car starts spinning the tires at spool-up by 2600)....i dont recommed any bigger for street use,ive driven some cars with larger stalls and IMHO takes away too much drivability.......
does it sound like the stall is a true 3000??

The line being re-attached would make it spool slower if anything since it sends pressure to the gate to open it. Your converter sounds like a true 2200 stall. I have a true 3100 and it cruises at 2000-2100 at 68mph. It stalls to 4700 at 23psi. The converter manufacturer makes a big difference. An AC N stall is cruising at least 800rpm more and only maybe stalls about 200rpm more than mine at zero boost/vacuum.

 

[turbo nasty]

Every car is different with the stall. Di you try the vac line off teh WG act and see if it spools faster?

 

[garyk1970]

The line being re-attached would make it spool slower if anything since it sends pressure to the gate to open it. Your converter sounds like a true 2200 stall. I have a true 3100 and it cruises at 2000-2100 at 68mph. It stalls to 4700 at 23psi. The converter manufacturer makes a big difference. An AC N stall is cruising at least 800rpm more and only maybe stalls about 200rpm more than mine at zero boost/vacuum.

im not sure of the manufacture of the converter........he bought used (i believe).....looks like there was some confusion on the sellers part perhaps.thanks for your help Bison.

Every car is different with the stall. Di you try the vac line off teh WG act and see if it spools faster?

take which one off? there are three (turbonetics WG) lines on it....thanks Jason.....

 

[turbo nasty]

The line at the gate that away you know there is no pnuematic signal getting to it at all to possibly open the valve prematurely.

Or you could pour in a qt of goat milk and it will tighten the convertor 1 k rpm..LOL

I have a set ofstock rods soaking in some kershaw county goat milk now to make them forged titanium.
(inside joke with Gary and i)

Hey Gary you outta try and come down here for Cruisin the Coast in aboutr 6 weeks there will be 5k plus cars. Whole week of shows all over the area, couple of the towns, have teh police block teh roads fro burnouts. Give me a ring