Boost level/efficiency with TA33

[6SENSE]

Wondering about when the efficiency of this turbo starts to fall off. If I recall the stock turbo was good to around 20psi. What has been the concensus with regards to the TA33, or at least what are your guys experiences? When does it just start to heat up the air and you wind up basically working against yourself by upping the boost pressure?

 

[TurboRegal84]

I see no problems with winding the TA-33 up to 28psi of boost...I used to run that with 116 and the car would pull hard. I wouldn't go above 28psi. If you do get to that point and still see no knock...add some timing and that should force you to lower the boost some.

 

[xxninja]

hey
i am running almost the exact same setup on my car, as both of you..
part for part, except for the drag radials (coming soon)

what do ya guys run in the quarter and 60 foot times?

i am just curious




brian

 

[TurboRegal84]

Well my car DID Run a 12.8 @ 110 spinning....I put in the posi rear and was at the track next day doing 60' testing and it cut a low 1.8 with Nittos. That day I had the boost down to 12psi with 16 degrees of timing, and was only crossing the traps at 14.0's. I had the car hooking well and figured I would turn the whick up at the track next weekend.......too bad we will never find out what it runs with a posi....as it is totalled now.

 

[boostmaster]

Herb what kind of boost & timing did you run on your 12.8 run. And what stall & style convertor do you run.

 

[TurboRegal84]

Stock D5 Converter/Tranny 25 PSI of boost 22 degrees of timing with 116 octane.

 

[6SENSE]

Originally posted by xxninja
hey
i am running almost the exact same setup on my car, as both of you..
part for part, except for the drag radials (coming soon)

what do ya guys run in the quarter and 60 foot times?

i am just curious




brian

Okay....... best 1/4 mile time to date : 13.94et @ 99.56mph w/ a 2.3 60ft. 93oct, alky/h2o, BFG DRs. Timing was 20degrees (JL street chip). According to TLink, max boost hit 23lbs. My VDO gauge probably said something different, maybe a couple lbs. higher, not sure which to believe. Low O2 was 789@77mph, High KR was 4.6@77mph. (this run was 2 weeks ago).

I'll see what I can do this week, but I have always had a heck of a time getting this car to move like I expect it to. A big problem is my 60fts. I am always spinning through them. I tried a set of used BFG DRs a couple weeks ago, and have not been able to get them to hook any better than street tires (I was cutting 2.4 and 2.5 60fts last week on DRs!!). I got a 2.0 60ft once a year ago, on street tires, thats my best . I can probably hold 10lbs. of boost at the line on my brakes, but if I left like that I would definately go sideways. I have left with holding 3-5lbs. of boost, and went sideways spinning, as soon as I stomped on the pedal. Come to think of it, I spin leaving with 0 boost as well, just revving slightly.
Also, I have not tried any race gas yet, reason being that I am trying to see what I can do in street trim. Probably going to try some methanol in the alky injection soon. I know I have much more tuning ahead of me. I know the alky isnt even tuned in as it should, because I do feel some bogging in the middle of the runs. My MAF sensor seems to only go up to 239, and now I noticed the tranny going into OD before the end of the 1/4 . Guess the good thing is that there is still Lots to play with, huh? ANY SUGGESTIONS?

 

[6SENSE]

Herb, I missed that your car totaled. I am sorry to hear that .

 

[boostmaster]

best to date : 13.26@ 104 MPH on street tires w/ 2.156 60ft. Check the trap speed thats a 12.70 - 12.80 if I could hook.

 

[xxninja]

wow a 12.8 or a 13 second quarter
thats pretty impressive for just bolt ons and no intercooler

i have always been pretty curious!!!!!!
plus since i got her running real good and driving around town, minding my own business, and testing her out......

i have been taunted by ALOT of Ls1's and stangs
Odds are they are just stock or have mufflers.

and they assume cuz their car is 4 times louder then mine, that mine is a stocker., or just some outdated 80s sports car.

i havent went for it yet, but when im comfortable with my car, i'm just gonna give it a shot, i may shock myself, or better yet. shock them !!!!!!!!!!!

But i always thought to myself "hey could i take this guy ?"