jajiddam

I know the rx7's twin turbos are sesquential, 1 at low rpms, the other at higher rpms. Does any other twin turbo car do this?? Ex. Supra, 3000GT, 300ZX. etc.

Why do some rx7's have heating problems with the vacuum lines?? Is it because it is sesquential??
If other cars are sesquential twin turbos, do they use vacuum lines too??

BoOsTin FD

Supra has the same system as ours, but i guess it's more reliable. Also it's one turbo by 4500 and then Both afterwards.

RxSeven1

iTrader: (2)

extreeemmmeee nooob.

its called www.howstuffworks.com
look up turbos.

jajiddam

yup, I'm an extreme noob.

so the supra's turbo system works like the sevens correct? 1 turbo at low rpm, then both at high rpms?

what system do they use that doesn't prevent their lines from overheating so much??

thanks guys

widebody2

boostin are you 100% sure about that. I've heard they are not seq. Heard that on this forum though so it may not be correct. Curious though

widebody2

Ours use a super duper complicated system which starts with the primary alone while at the same time a bit of exhaust gas is diverted to the secondary turbo which lets that one prespool, then come on full blast at about 3k. Thats the reason for the super duper messy vac hose system. I know that the supra vac system is no where near as complicated as ours. They Possibly may not have the second turbo prespooling while the first is boosting.

ijneb

I know the 300zx cars run like two 3 cylinder engines.
3 cylinders per turbo, one on each side, completely isolated from the other.

180sx-x

yea, ours is so damn complicated thanks to the flapper door and the pre-spooling non-sense our turbos shouldnt have got...but hey, it werks, right?

Mahjik

iTrader: (1)

The Porsche 959 (from the late 80's) was a sequential setup.

The reason the RX-7's system is so complicated is that they tried to not use electronics for controlling the system (to reduce costs), so the system is controlled by the vacuum lines. It was improved in the later years.

SleepR1

When it's working the sequential setup is a thing of BEAUTY!

DrunkenBowler

Maybe, but a single turbo is the best.

tekno62

SO SO LAME

jajiddam

thanks guys for all your input. much appreciated