Thread: t3/4 60 trim vs 60-1 high-fi vs gt3076r

First time I ever heard this before
Turbonetics is notorious for there seals going bad after 6 months.

of all the opinions stated thats what i get flamed for!!!

dbb for the Win.

altho with a volumetric efficiency around 95 - 120 and a 9k rpm limit im getting about 60 - 70 lb/min needed @ 20+ psi or 35 psi absolute

thats big t4 territory. mabe the high rpm ve idea is a track only idea

ok thanks for your reply

first of all no it aint going to be a stock bottm end, i will be running bc billet rods, cp pistons 8.5:1 de comp so around 9:1 and head and main studs.

the reason i want the .64 or .63 housing is because i know of someone that has a .64 t3 reared gt3076 and he seams to have no problem with it not flowing enough and thats with 20v cam si bigger than mine. a t3 .64 rear should be around equal flow to a t2 .86. there is no way in hell i would run a t2.86 as i defiantly think it will choke. but how much power do you think i will loose up top? i dont mind if its a little bit

i will add this car will be my daily/street car

what opional turbine wheels do you think i should try, i was going to go the f1-57

oh yeah plan on reving to 7800rpm and the ex is ported a fair bit, intake is close to standard

also what turbo you have on your car? and whats your set up thanks

You just gotta be careful of the overlap mang. If you have a long tubular manifold I would go big, you will make a ton of power. Just get some valve springs in there and take her to 9k all day long. That will make a ton of power. The 63 will restrict top end, but not that much.

It depends on the boost you wanna run, but if you want over 20psi to hold to 9k you will need the 3076 and the 82 housing. If you only go to 7800 then the 3076 should work great.

I love my 76r. I wish it had better spool sometimes, but hey, whatya want when you make over 350whp on pump. With a tubular there is no doubt I would nail 400whp.

well dual ball bearing turbos are well known for their spool characteristics, i have had expierence with both the gt2871r and gt3582r.....both excellent spool and excellant turbos ....and they are also very durable turbos also.

Turbines with 360 degree thrust bearings will not last as long as their ball bearing counterparts, and that's the bottom line. Other than that, the ball bearing cartridges are known for faster spool times. The difference: Typically, 360 degree thrust bearing turbines are much cheaper.

also, 360 thrust is rebuild able while the Garrets Dual BB isn't. the CHRA for th Garret is about $900 don't ask me how I know.

yeah i have seen your problems with reversion

also i will be running a small runner tubular, so should be a nice compromise between spool and flow hopefully (i might post pic later). plus the car will be tuned on a dyno with adjustable gears with 20deg of adjustment fom each gear, so should be able to get the overlap down

i think your biggest problem is that crappy 91 octane and low oxegen, plus the vet cams may be great for overlap and have great lift but the duration is about as lazy as standard de items. and the jwt.... anyway i should be running e85 as my daily fuel which is 105 octane if that doesnt work out 98 premium will be the alternative

also for all those ball bearing lovers, just because a turbo has ball bearings doen't make it better. Have a look at the trust line up....they wouldn't be able to charge over $4k for a plain bearing turbo kit if its not good. have a look at the plain bearing tdo6l2 8cm and compare to a gt3071r or even compare the trust t518z to the 2871r. both trust units will make the same power with similar and in many cases better spool than the ball bearing competition but with a crap load more toque. however the bb units will out last the trust itms. but very cheap to rebuild a trust item..if ya dont shag a wheel or shaft anyway. garrets...forget rebuilding might as well get a new one.

i would love opinions and imputs from people that have delt with both the ceramic turbos and garret items, not just the average "duel ball bearing is the ****z yo" i happen to like the ceramic bearing design in theory and would like to hear real life experiences as i have not used them yet.

i also have delt with many ball bearing and non ball bearing units from t28bb, gt2871r to td06