Turbo?
CF Veteran
Joined: Nov 2011
Posts: 2,433
Likes: 6
From: Northern MN
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
think about what buddy ever hear of brake boosting?????? its based of that^^^^ and the fact that it builds boost better due to the load hahhahahah im done honestly like i said they like load and it does make it more powerful/faster..... and to the op sorry for this just didnt want u misread go to the turbo forums read as muh as you can look up theory formulas etc...
you pressing brakes = making wheels harder to spin = building more boost = more power/torque
or
putting bigger wheels + steeper gear (stock gear or lower) = more power/torque/boost
and about the dynos not neseccarily because on the dyno theirs still load and once the turbo start to work youl still see a peak in #s you ever see supras dyno #s??? ive seen a 300whp supra run the same time as a 800whp supra with the same suspension setup....... just because your rowing through gears faster doesnt mean ur actually going faster...... theirs so much and ill end it here go read enjoy
im just sharing real facts information not trying to stir or upset anyone...
you pressing brakes = making wheels harder to spin = building more boost = more power/torque
or
putting bigger wheels + steeper gear (stock gear or lower) = more power/torque/boost
and about the dynos not neseccarily because on the dyno theirs still load and once the turbo start to work youl still see a peak in #s you ever see supras dyno #s??? ive seen a 300whp supra run the same time as a 800whp supra with the same suspension setup....... just because your rowing through gears faster doesnt mean ur actually going faster...... theirs so much and ill end it here go read enjoy
im just sharing real facts information not trying to stir or upset anyone...
Brake boosting, TO MY UNDERSTANDING, is only to pick up the RPMs enough to get the turbo all spooled up. Still unconvinced? Get ahold of that supra and add another 6000lbs to it and go race it. After all, more load makes more power, right?
CF Veteran
Joined: Nov 2011
Posts: 2,433
Likes: 6
From: Northern MN
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
And to the OP, if you haven't already, look on youtube and try to get in touch with others who have done this. I myself would go supercharger because you don't have to spool it up, or throw a huge load on it (
) to have boost. Also because there are quite a few SC kits for the 4.0. Either way, good luck and I'll be keeping an eye out for info.
) to have boost. Also because there are quite a few SC kits for the 4.0. Either way, good luck and I'll be keeping an eye out for info.
CF Veteran
Joined: Sep 2010
Posts: 4,968
Likes: 0
From: Salt Lake City, UT
Year: 2000
Model: Cherokee
Engine: 4.0L
haha! fail. So If I hold the brakes my car goes faster? common sense isn't as common these days 
either way OP, its a can or worms with a big amount of $$ at the end. its going to take lots of research from you, and asking others who have done it a bunch of questions. you will need to fully understand how a turbo system work in and out if your going to try this.
P.S. don't forget, the harder it is to accelerate the Faster you will go!
(unsubscribed)
either way OP, its a can or worms with a big amount of $$ at the end. its going to take lots of research from you, and asking others who have done it a bunch of questions. you will need to fully understand how a turbo system work in and out if your going to try this.
P.S. don't forget, the harder it is to accelerate the Faster you will go!
(unsubscribed)
CF Veteran
Joined: Dec 2011
Posts: 1,777
Likes: 22
From: PA KOTUFU!
Year: 1998
Engine: 4.0L 162,000
CF Veteran
Joined: Jun 2012
Posts: 1,250
Likes: 3
From: California
Year: 1989
Model: Cherokee
Engine: 4.0L
It used to be the standard of how rally drivers did it before the automated system of keeping the turbo spooled up. This article explains the new system but if you read carefully in paragraph 3 they explain the previous technique.
"Others have used a technique, introduced by the German driver Walter Röhrl, known as "left foot braking" where the driver uses his left foot to brake the car while his right foot accelerates to keep the turbocharger in optimal load. Left foot braking is very hard on the brakes which are put into extreme stress but is very efficient in keeping the turbo spinning."
http://www.rallycars.com/Cars/bangbang.html
PS regardless of the debate or what is correct, a few people are acting like jackasses.
"Others have used a technique, introduced by the German driver Walter Röhrl, known as "left foot braking" where the driver uses his left foot to brake the car while his right foot accelerates to keep the turbocharger in optimal load. Left foot braking is very hard on the brakes which are put into extreme stress but is very efficient in keeping the turbo spinning."
http://www.rallycars.com/Cars/bangbang.html
PS regardless of the debate or what is correct, a few people are acting like jackasses.
Last edited by McCaffrey; Nov 8, 2012 at 11:26 AM.
CF Veteran
Joined: Nov 2011
Posts: 2,433
Likes: 6
From: Northern MN
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
CF Veteran
Joined: Nov 2011
Posts: 2,433
Likes: 6
From: Northern MN
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
Member
Joined: Dec 2010
Posts: 182
Likes: 0
From: Covina, ca
Year: 1992
Model: Cherokee
Engine: inline 6 4.0 L
you seem to be flattering the idea, and there isn't anything wrong with that. don't let anybody bash you for wanting to learn, but they're are a lot of alternatives, if you got the bucks i would recommend a 350 swap, i think you would be much happier with it..
what do you have under the hood already?
what do you have under the hood already?
Member
Joined: Aug 2012
Posts: 214
Likes: 0
From: Long island ny
Model: Cherokee
Engine: 4.0
It used to be the standard of how rally drivers did it before the automated system of keeping the turbo spooled up. This article explains the new system but if you read carefully in paragraph 3 they explain the previous technique.
"Others have used a technique, introduced by the German driver Walter Röhrl, known as "left foot braking" where the driver uses his left foot to brake the car while his right foot accelerates to keep the turbocharger in optimal load. Left foot braking is very hard on the brakes which are put into extreme stress but is very efficient in keeping the turbo spinning."
http://www.rallycars.com/Cars/bangbang.html
PS regardless of the debate or what is correct, a few people are acting like jackasses.
"Others have used a technique, introduced by the German driver Walter Röhrl, known as "left foot braking" where the driver uses his left foot to brake the car while his right foot accelerates to keep the turbocharger in optimal load. Left foot braking is very hard on the brakes which are put into extreme stress but is very efficient in keeping the turbo spinning."
http://www.rallycars.com/Cars/bangbang.html
PS regardless of the debate or what is correct, a few people are acting like jackasses.
CF Veteran
Joined: Jun 2012
Posts: 1,250
Likes: 3
From: California
Year: 1989
Model: Cherokee
Engine: 4.0L
Load and weight are different this above is something else i was talking about turbo cars are different nuff said an if u plan to wheel it go sc and honestly 350 swap would be what i want in a xj due to turboing has its limits then motor work etc id just get a wrecked ws6 and use that and have both reliable with the obd2 required
CF Veteran
Joined: Nov 2011
Posts: 2,433
Likes: 6
From: Northern MN
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
