Stock Twin Turbos?

[TYTILIDIE]

Re: Stock Twin Turbos?

Hmmm.....good question. I think if we were to divide the displacement by the rearend gear ratio and then multiply by the CFM and subtract 147 from the overall tire diameter and multiply it by the other number we got before, it might, just might, tell us why. Ofcourse we could just simplifiy the equation by multiplying the capable speed times the number of quarts of turn signal fluid we use.

 

[AUSyTyIN]

Re: Stock Twin Turbos?

Hmmm.....good question. I think if we were to divide the displacement by the rearend gear ratio and then multiply by the CFM and subtract 147 from the overall tire diameter and multiply it by the other number we got before, it might, just might, tell us why. Ofcourse we could just simplifiy the equation by multiplying the capable speed times the number of quarts of turn signal fluid we use.

Give or take 2 HP :rotf:

 

[TYTILIDIE]

Re: Stock Twin Turbos?

Yeah I even thought abpout getting some temp tags to add 50 horse power but decided that I didnt want to invest that kind of money

 

[Black Knight]

Re: Stock Twin Turbos?

I've been reading this post for awhile now rolling it over in my mind, trying to decide if it's even worth the time or energy. I've read through e's post and it's hard to see what he was doing without the pic, but I don't think I'm thinking along those lines.

http://www.syty.net/forums/showthread.php?t=7721&page=1&pp=15&highlight=stock+turbo

Take drag racing completely out of the equation, think either auto crossing or road racing. Now either picture stock turbos or something close a set of 52's, that is mounted similiar to Marty's setup or even better yet, rear mounted. If you rear mounted them then you would have no heat issue to contend with. Yeah, yeah I know SyTy's aren't good for these types of racing, but just bare with me.

If you were in a situation where your speed was consintatly changing up and down and needed the power to be there as fast as possible. Now I've never drove a SyTy with just a single large turbo, but have drove other vehicals and am aware of the lag issue. Can the lag issue with a large turbo be eliminated with a really high stall converter or does it still remain with larger turbo's ( if your already moving ) ?

I think Jeremy said he was getting about 500 hp out of a one stock turbo, I could only imagine where you would be with two, and almost no turbo lag.

Just something else to think about, feel free to through ideas out there and see where this might go.
Remember don't think from a drag racing perspective think about going through a hairpin turn and needing to accelerate out of it as fast as possible.

 

[TYTILIDIE]

Re: Stock Twin Turbos?

I understand what you are saying but its a somewhat pointless debate if we are not autocrossers. I barely remember posting this thread but its all coming back to me now. The whole point is for drag racing. I guess if you were talking about autcrossing your TY it would be different but Im not. Anyway, I tossed the idea when I realized how fast I was going on a crappy tune and figured I could do so much better with getting it to run right and then going the tuning route. Im getting all my tuning tools (Ostrich, Wideband blah blah blah) by Christmas. I almost nailed a high 12 with no fuel in the top end and a butload of Knock and ridiculous IAT's. I think you wouldnt gain much by adding another stock turbo. I could be wrong but financially it really doesnt make a whole lot of snese.

 

[Black Knight]

Re: Stock Twin Turbos?

Mike, I was basically trying to take this thread in a whole new direction and see what would become of it, since the general consensus for drag racing is single large turbo, you can elimanate most of the lag issues by running a really high stall and spooling up, if your already moving you can try to keep it spooled by accelerating and braking at the same time. But to get even more power?

You hadn't used this thread in 9 months so if you mind me using it I can start another, it just looked like you were done with it.

 

[gkrcr882]

Re: Stock Twin Turbos?

I've been toying with the idea of adding a turbo (possibly twin) or a supercharger in the future, and I think that a twin-turbo setup would be easiest for what I have. Granted, the internals will need to be modified, and the headers might need to be flipped and switched, but upon further investigation, twin turbos would be easier.


I agree with Black Knight, that while twin turbos may have the disadvantage of heat and complexity in a SyTy system, the benefit of minimal lag is a great trade off. Even for street driving, when extra power is needed there is little, if any wait; it would be almost on-demand since the turbos would spool faster and achieve peak boost quicker.

 

[Syborg Twin Turbo]

Re: Stock Twin Turbos?

I've been toying with the idea of adding a turbo (possibly twin) or a supercharger in the future, and I think that a twin-turbo setup would be easiest for what I have. Granted, the internals will need to be modified, and the headers might need to be flipped and switched, but upon further investigation, twin turbos would be easier.

trust me from experience - Twin Turbo's are very expensive and plumbing is a nightmare at best. Man everything is in the way. Lucky enough for me we moved everything including the firewall (back 2").

Really cost wise do a single turbo. Maybe one little gt 32 like i have would be plenty for street and light strip use.

 

[gkrcr882]

Re: Stock Twin Turbos?

Thanks for the info, I was hoping that you would add a reply, since you're the only other V8-er I know of around here. All else fails I might consider a roots-style blower in the future. Before anything of that nature happens though, I gotta get the CR down to a safe level, preferably 8.5 or 9.0:1. I like the idea of a turbo, but the part that has me baffled is the exhaust manifold/header situation. I'd like something sort of like the SyTy system (with a crossover and the turbo on the pass. side), but nobody makes 'em for V8s. A carb enclosure is the next hurdle to think through, as well as some sort of IC system.

 

[SyTyJedi]

Re: Stock Twin Turbos?

Marty has a V6.

 

[gkrcr882]

Re: Stock Twin Turbos?

Doh! :shoot: . Well.....he's been the most gung-ho about turboing the V8!:rotf: Time for bed:crazyeye:

 

[super-gt]

Re: Stock Twin Turbos?

:squint: LS1 (V8) :wave:

As for forced induction on V8 swap trucks....I plan on supercharging......theres just so little room in the engine compartment for a turbo when a V8 is in there too. I mean it's possible, but I know in my engine compartment at least...you would have to remove alot of stuff or move it out of the way to fit a turbo and plumbing. I'm goin with a twin screw if anything.

 

[Black Knight]

Re: Stock Twin Turbos?

You don't have to mount the turbo in the engine bay, you can rear mount it as to not clutter up and add heat to the engine bay, if you don't mind not seeing it.

 

[super-gt]

Re: Stock Twin Turbos?

Yea....I'm just not a big fan of rear mounted turbos..

 

[Black Knight]

Re: Stock Twin Turbos?

Why not? Other then not seing it in the engine bay it's a better way to go for the above reasons. Some people like to say it has too much lag that way, but that has been shown to be incorrect.

 

[super-gt]

Re: Stock Twin Turbos?

Well, rear mounts are going to lag. Yes they can be spec'd not to lag, but how? Smaller turbo.....that cuts down top end power. They are still a cool idea but front mounts are more efficient.

 

[Black Knight]

Re: Stock Twin Turbos?

Well, rear mounts are going to lag. Yes they can be spec'd not to lag, but how? Smaller turbo.....that cuts down top end power. They are still a cool idea but front mounts are more efficient.

They say they're spec'd to the vehical, now yes there isn't a SyTy setup, but that doesn't mean someone couldn't do the math and figure it out.

http://www.ststurbo.com/f_a_q

They're using a 60-1 on a 5.3L, they didn't list what turbo for the 4.8L so we have no real data to compare (since it's a closer motor size). They're making 324HP/373TQ with a single turbo and only 6psi of boost. With lower compression and higher boost I really doubt they will have any trouble making higher end power.

http://oi.b5z.net/i/u/1473169/i/pdfs/STSFACT_03GMUP_02_Final.pdf

The closest displacement motor that they list is the Mustang one, but it only had specs in a twin application.

http://oi.b5z.net/i/u/1473169/i/pdfs/STSFACT_MUSTANG.pdf

I don't know if you saw the special on T.V. where they put one of the Vette kits on, we had a little thread about it here but I couldn't find it, and they didn't have any trouble with lag or top end power.

 

[Syborg Twin Turbo]

Re: Stock Twin Turbos?

in case you guy's were bored

http://s-seriesforum.com/forum/showthread.php?t=78641&goto=newpost

 

[HotRudyRod]

Re: Stock Twin Turbos?

:squint: LS1 (V8) :wave:

As for forced induction on V8 swap trucks....I plan on supercharging......theres just so little room in the engine compartment for a turbo when a V8 is in there too. I mean it's possible, but I know in my engine compartment at least...you would have to remove alot of stuff or move it out of the way to fit a turbo and plumbing. I'm goin with a twin screw if anything.

I've seen many LS1/6 supercharged/nitrous trucks and they work very very good, specially the 4x4s. Seen them with twin screws and blowdryer superchargers and nothing has been removed or relocated, they almost look stock.

 

[super-gt]

Re: Stock Twin Turbos?

I've seen many LS1/6 supercharged/nitrous trucks and they work very very good, specially the 4x4s. Seen them with twin screws and blowdryer superchargers and nothing has been removed or relocated, they almost look stock.

Yea I wasn't refering to supercharged or nitrous trucks, I was refering to turbo charged v8 s10's( hence all the plumbing). The only thing i could see needing to be removed for a blower would be the window wiper motor.