Sequential Turbo Setup

[highboostgn]

Has anyone thought of/done this?

 

[Howling Mad]

I think there was a thread last year about this. I'm sure you could build one, but why would you?

 

[highboostgn]

I think there was a thread last year about this. I'm sure you could build one, but why would you?

same reason they put one in the supras..Use a small turbo to spool a bigger turbo. Less lag, more power.

 

[Howling Mad]

Most supra guys around here switch to single turbo set ups unless they're doing a lot auto cross and I've seen a few of them do a legit twin set up

 

[dr_frankenstein]

yea i dont think the compound turbo thing would work for a buick... what advantage would there be? modern turbo/converter technology has covered those areas pretty well.

 

[bison]

It's very common when trying to achieve a very high pressure ratio without overheating the charge air. Most commonly used on diesels for tractor pulling. They run very high pressure ratios and have the turbos staged with coolers in between. There is about zero advantage with one on a street car especially with the purpose built turbos these days.

 

[earlbrown]

I can't think of any situation where someone went from a single to a sequential to improve performance. All the instances I've heard of have been the opposite.

If I were going to have to power adders in series I'd build a small turbo blowing into a blower. The belt driven compressor would have zero lag and a small turbo blowing into it would make the blower more efficient.....

.....and if I wanted more efficiency than than, I'd toss the blower and go with a big single turbo

 

[Red C5]

Has anyone thought of/done this?

People think of it a few times per year and a thread like this pops up. A lot of cost for not much gain.

 

[TurboDave]

IMHO, I would prefer two turbos (if the budget allowed on my GN's), but NOT sequential. But rather one for each bank.
The one thing I've learned playing with my FoMoCo EcoBoost power plant in my Lincoln is that two smaller turbos have one huge advantage, and that is, lightning fast spoolup. This motor literally has zero perceptable turbo lag. None. Nada. Zero. Which of course makes throttle stomping a ton of fun!! Are they small? sure, (48mm) but each one only has to feed the equivalant of 3 cylinders.

 

[KEVINS]

IMHO, I would prefer two turbos (if the budget allowed on my GN's), but NOT sequential. But rather one for each bank.
The one thing I've learned playing with my FoMoCo EcoBoost power plant in my Lincoln is that two smaller turbos have one huge advantage, and that is, lightning fast spoolup. This motor literally has zero perceptable turbo lag. None. Nada. Zero. Which of course makes throttle stomping a ton of fun!! Are they small? sure, (48mm) but each one only has to feed the equivalant of 3 cylinders.

Ditto! I'd love a pair of twins on mine..

ks

 

[Rafs-T-Type]

IMHO, I would prefer two turbos (if the budget allowed on my GN's), but NOT sequential. But rather one for each bank.
The one thing I've learned playing with my FoMoCo EcoBoost power plant in my Lincoln is that two smaller turbos have one huge advantage, and that is, lightning fast spoolup. This motor literally has zero perceptable turbo lag. None. Nada. Zero. Which of course makes throttle stomping a ton of fun!! Are they small? sure, (48mm) but each one only has to feed the equivalant of 3 cylinders.

My BB6265 with a .63 spools insane fast. The boost comes on now. N0 delay.

 

[SMV6LOL]

I think people are confused on twins, compounds and sequential... ive wanted to do a vgt setup on mine but seems like alot of work for little gain

 

[turbojoe1]

Lots of those eco boom cars and trucks around here. The trucks are already well known to have they're issues and are in the local shops often for oiling problems. The shop i go to hates them, an under hood night mare to work on.

Thanks Joe

 

[SMV6LOL]

^^^yep the new turbo systems are so complex... Diesels have always kept them pretty simple and bullet proof (until the emissions crap). If you love boost diesels are the best 70 psi on my old truck. No AFR just shove as much air into the motor as possible.