TA49 inquiery... not the normal "?"

[GregInAtl]

I have a TA49 on an 86GN, its a garrett, but its a .83, not a .63. Anyone have experience w/ this. My trusty GN guru locally advises me to swap to a factory sized garrett .63, and it'll wake the car up. Whats the advantage of keeping the .83 if any? I trust my guy, but I always wanna learn a lil more, other experienced people speak up please!!
Thx

 

[Gary Wells]

No experience here, but from reading all of the info available, the .83 will have more lag and sacrifices low end power for upper end power, or running a higher stall verter will make up for the lag & loss of low end power.

 

[YellaGN]

Wells.......correct assumption. I went from a .63 to an .82 on my 70BB about a year ago. The .63 spools way faster. Much more lively on the street and on the tbrake. Switched to the .82 wanting more top end charge. The .82 gave me a noticeable amount of added lag, but also power from the top of 2nd gear on! Picked up an easy 2 mph in the 1/4, but the 60' suffered a tad bit. For you.....going back to .63 housing is probably the smarter move, unless all you do is race supras from a roll on the street.

 

[GNVYUS 1]

Is it a Garrett .82 or PTE?
If its a Garrett, its a tad bigger than PTE's .63 and not a huge deal.

If you have a stock D5 converter and not many mods than it will be laggier than normal. But if you put a 3200 behind it and a Manual Boost Controller the 49 will spool like mad regardless.

The Garrett housings spool a tad faster than the PTE's but the PTE's flow more. I would not worry about it and put your $150 to switch housings into the car with a MBC ( $10 on ebay ) a test pipe etc and get the car spooling faster and making more power.

 

[GregInAtl]

Thx for the replies,
Dr, I am runnin a Garrett .83, not PTE. I have stock rear-end w/o an aftermarket stall. I am planning on this being a show-street rod car, not a track car. I still would love to race it occasionally, but street is far more important to me...also pulling large wheels and brakes.
The end goal is to be 11.99 , 500whp, on 20" rear wheels. Gonna be tough.
So far the mods include, TA49garrett, 3"DP, 2.5" exhaust, green stripe injectors, and rear disc conversion.
I am still waiting to get Turbotweak chip, new IC, all new suspension.