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Turbo TBSS Kit??

27K views 100 replies 42 participants last post by  summerwolf  
#1 · (Edited)
So I'm sitting here thinking about these last handful of 6l80 conversion issues and what other, low budget bang for the buck things I can do for the truck. I personally like to have my cake and eat it too. But I look at the big pic. HP numbers are only part of the equation. I need durability, driveability, fuel econability :), and cost ability!!

So I'm thinking...well hell...I'm already in cats-back exhaust stuff. I've found a good set of capable and creative craftsmen who share my vision of 'ability'. And a beefy tranny will be itching for some extra oomph. Why not a simple low-cost, low boost, "easy" install cats forward twin turbo kit??

With these 'ability' parameters, keep in mind we're not talking the latest and greatest variable boost turbos. We're talking a kit that would be very OEM in nature. For ou keep the factory Enough design to feel the power difference, but allow that power difference to happen over and over without damaging anything. What we are talking is a basic kit that focuses on efficient mandrel bent tubing, more than adequate intercooler, easy install, injectors, catch can, safe tune and upgradeability design for when you have the funds and itch to go faster.

FINALLY...all those itching to throw their :2cents: and point out this turbo is better or new headers are more efficient, yada, yada...relax...Nothing in stone...just thinking. Could a full reliable and good power turbo kit be done and shipped to your door for no more than $4k?:dunno:
 
#6 · (Edited)
Turbos, like anything, can be 'tuned' or designed for hi or lo rpm applications.

Please...don't make this another SC v Turbo thread. I'm not looking for a flame war.

Granted, no turbo comes close to the INSTANT boost of a s/c motor. But beyond that...what else is there? I'm sure there will be diehard SC fans, but having owned and driven turbo diesel big rigs for and having owned several sc'd cars (Ford Supercoupes and Vortech'd '04 GTO) and more significantly, installed/worked on them...I'm not the biggest fan. Repeat...I, the thread starter, am not the biggest fan of s/c's.

For one...extra metallic mass on top of a motor means A) significant weight on the nose B) more heat retention (heat rises, folks). Second, by being mechanically off of the engine it A) drags on my engine, making more work for it, making more heat B) strains the crank and related snout. Third, you can't "tune" an SC short of a pulley and new cam...and a pully doesn't count because the HP/TQ curve doesn't change per se, but tends to simply swell. I like flexibility. With a turbo kit you have countless options to 'tune' the engine including swapping out turbos, changing intakes, or just bleeding boost.
 
#16 ·
Ha no dont get me wrong they both have their advantages IMO. Not trying to get into a debate on what is better. But as far as turbos being better for high RPM applications and vice versa for SCs is really just bad information.
 
#17 ·
Well all I know is that high HP high RPM engines normally have turbos on them, so it made sense to me at the time. Then again, I've never had the means to go F/I so have never done much research into it. :dunno:

With that, let's not derail the thread any more. ;)

I would really like to see a turbo setup on the TBSS. I think it would be moderately straight-forward.
 
#18 ·
I understand what you are wanting to know Jesse. I think the only way to know for sure is to price everything out, put one kit together and see how well it works. Once you get one kit made then you can put more kits together for sale. You should be able to put a decent kit together for 4k. Unless your markup is really high.
 
#21 ·
IMO 4k is a little out of reach. Actually way out of reach. Especially dependent on material and FWIW I woulnt put anything less than a 304 SS kit on mine.
 
#22 ·
It can totally be done if you're fabricating your own kit, and put your own elbow grease/time into looking for the best deal. Just make sure to buy new units, and not used ones, as they usually look great, but tend to need a rebuild anyways. I would suggest going with a single setup, as you'd only have to pay for one turbo, there would be only one intake side running back up to the intercooler(saving room), and you wouldn't have to worry about making the wastegate settings on "each" turbo the same...I've gone both routes, DIY TT setup, and DIY single setup. Twin looks more "aggressive", but if you do a remote kit, it won't matter...Each kit I built/pieced together were well under $4000, each. The single was probably 600-700 bucks cheaper, since there was only 1 turbo, and 1 WG. Finally, a correctly sized turbo per motor should make WAY more power under the curve than any centrifugal or roots/screw style S/C at the same boost level, without putting "direct" stress on the motor.

BTW, my DIY single setup @ 10 psi made over 500hp/600tq(according to guy I sold car/turbo setup to) and my twin setup made 492 rwhp/560 rwtq @ 9-10 psi.

Just my $.02
 
#23 ·
Its going to be dang near impossible to build/sell a twin turbo setup for under $4k, and actually turn a profit. That's two turbos (decent ones, not made in China), two wastegates, two surge valves, all associated hot pipes with flanges, cold pipes, intercooler, brackets, silicone couplers, injectors, pcv setup, air filter(s), oil lines (evac pump too if you don't get the turbos above the oil pan)...+a little profit. Hey, I'd love to see it done, but its a tall order, at best.
 
#27 ·
what do you guys mean, when you say a turbo is for higher RPMs. my GN is out of RPms at 6200 - 6500. from a little v6. & is capable of running mid to low 11s. :biggrin2: our SS still has 2000rpms more for the turbo to push at the top end. :dunno: I still think about putting on my old TE60 on the SS, change the actuater spring to 10lbs & add a meth kit like on my GN. my mechanic could install it as an sts kit. and fab the oil line. that wouldn't run me nowhere close to 4g.... unless the tune was off & it made 25lbs of boost instead of 10lbs max. oh, that would be UGLY....:argue2:
 
#28 ·
hey moderators, how come I keep loosing my avtar pic of my GN & SS together? :dunno:
 
#29 ·
Wow...lots of feedback.:coolthumb: Thanks for not getting into the which is better debate. :cheers1:

The kit will be 304 Stainless. Period. Unless I get some ridiculous discount on aluminum tubing. I don't want the longterm unseen corrosion from inside damaging the turbo engine.

Off the bat, I'm thinking KB Boost A Pump and, obviously, injectors to address the fuel solution.

Regarding turbo quality standard. I will offer plain and simple, the most reliable AND affordable new OR reman'd turbo units. I don't believe in doing work twice, so if I'm not confident enough to put it on my truck and not have a second thought about how I drive it and for how many miles I'll put on it (currently 36k in just over 2 years) it's not good enough for the kit. As it's a twin turbo application, each turbo will be under very little strain and providing little boost. If a customer wants to add their own custom this or that turbo, a standard turbo delete credit will be applied and the customer can go ala cart on their own! Obviously nullifying any warranties and liabilities beyond craftsmanship of our kit.

The kit is intended to be underhood...using factory exhaust manifolds....hence saving the biggest expenses....R&D and casting for new manifolds. If arrangements can be done to use other LSX turbo manifolds, then we will do so. But remember...this is intended to be a simple kit, that has little if no post purchase expenses (outside of labor). Custom headers means more money in labor removing factory manifolds. And God forbid you decide to sell your TBSS (or you know...maybe to take a visit to the dealer for some warranty work. :dunno:), the kit is intended to be designed to make a 'back to factory' swap job relatively easy.

I prefer twin turbo because, I believe, its a more balanced system from the standpoint of (A) a V configuration motor. Each bank of cylinders will have an 'relatively' even load of backpressure upon then. (B) Twins maintain adequately even pressure to the turbos for a more predictable and balanced pressure on the induction side. (C) Think of it as overkill design. Two turbos make any custom/upgrading tuning and HP goal easier because the turbos are not working hard in the basic configuration. Tuning for the Dr. Jekyl Mr. Hyde tendencies of a single turbo feeding 2 banks of cylinders is quite the sadistic art I'm not willing to study. The fact that these 3 points make the system easier and faster to create and bring to market is a welcome bonus! :cheers1:

Plus I think it would just be "_____" (tits/cat's meow/hot/da bomb) to put those two brake cooling ducts to good use with twin intercoolers lurking behind them! :idhitit: BUT I'm ahead of myself as we'll have to look into the whole which design is best intercooler scenario.