which GT series for stock GN ?

[BLACKHAWK38]

I do not understand the JARGON ON THESE GT turbos, and are there some with 3 bolt flange, or are that all 4 bolt and you have to modify the height of the down pipe and the intercooler inlet?

also, four bolt headers , will they equal every thing out, probably not, discharge flange probably not the same on turbo as stock and may need external waste gate??

GT jitters, blackhawk 38

PS, what does the last two digits stand for as in GT 3255>> FIFTY FIVE ? IS THIS THE COMPRESSOR TRIM ?

 

[Slow91z]

Here you go...Very informative site.

http://www.forcedinductions.com/help.htm

 

[JZ 97 SS 1500]

The new GT nomenclature is much better then before. Once you learn the chart, its very easy to read.

Jose

 

[BLACKHAWK38]

What about 3 bolt turbine INLET for buick?

Originally posted by JZ 97 SS 1500
The new GT nomenclature is much better then before. Once you learn the chart, its very easy to read.

Jose

Does the GT come in 3 bolt turbine inlet, buick 3 inch center to center bolts on a 3.5 " bolt circle, >3.464 square root of 3" ,> 1.732"X 2 = 3.464">= close enough to call 3.5"

I know that these GT series are realivity new to the turbo buick enthusiusts, I have enough trouble trying to make sense out of the older existing turbo Jargon. such as wheel trim, surge line, compressor A/R, Turbine A/R, ect. and converting LBS per minute of air flow to CFM @ at some density, ie , barometric pressure and temperature.

I will check out those sites, Thanks
Blackhawk 38

 

[JZ 97 SS 1500]

Direct from Garrett, not they don't come with a 3 bolt housing. PTE though does adapt the different housings to some of the GT units.

Jose

 

[Taffy]

Re: What about 3 bolt turbine INLET for buick?

Originally posted by BLACKHAWK38


Does the GT come in 3 bolt turbine inlet, buick 3 inch center to center bolts on a 3.5 " bolt circle, >3.464 square root of 3" ,> 1.732"X 2 = 3.464">= close enough to call 3.5"

I know that these GT series are realivity new to the turbo buick enthusiusts, I have enough trouble trying to make sense out of the older existing turbo Jargon. such as wheel trim, surge line, compressor A/R, Turbine A/R, ect. and converting LBS per minute of air flow to CFM @ at some density, ie , barometric pressure and temperature.

I will check out those sites, Thanks
Blackhawk 38

Precision makes 3 bolt housings for the non ball bearing turbos. The ball bearing turbos do not as of yet have a 3 bolt housing.

Supposedly, Garrett is coming up with ball bearing center sections for the regular TR turbos. Do not hold your breath on that one though.