preventing turbo lag

[1gspot]

A buddy of mine just presented me a somewhat radical idea and because i dont know much about turbos i couldn't give him much advice. He believe it would be a good idea to spool the turbo at low rpms using an electric motor. Kind of like an electric super charger of sorts. By spinning the turbine using a motor u could create pressure even when the motor was at low rpms. My first suspicion was perpetual motion type problems, could an electric motor drivin off a battery create enough energy to spool up the turbo without the aid of exhaust. All feed back is appreciated

[1gspot]

wow well this thread is done before its even begun. I used a favorite tool of my patent lawyer dads, and looked on the US patent and trademark website, uspto.gov, and did a search for patents relating to electricly assisted turbochargers and sure enough it came up, not only does the system exist but there has been extensive experiements some resulting in a 50% decrese in turbo lag ::cheer:: except i guess they are expensive, still sweet though, maybe someone should open a new threw all about electronicly assisted turbochargers

[boosted331]

Why would you want a quicker spooling turbo that costs a ton more on a honda, so you can burn the tires 15 feet sooner in first gear, and have it make no difference in 2nd-5th? Lag really only becomes an issue if you're running a monster sized turbo with a T4 exhaust housing, with a 66+ MM compressor. Any T3/T4 for hondas is going to spool quick enough to give you more low end than you know what to do with, and will hold boost through the shifts.

[Tranzlogic]

<--- agrees

[vtec92civic]

yup yup no need for getting rid of lag. A little lag is good because that means you can dailoy drive without boosting if you wanted too

[YellowITR479]

Boosted331: Then why does my car not start to spool until about 4400 rpm and does not see full boost (13+psi) until 5400 rpm?

[boosted331]

Originally Posted by YellowITR479

Boosted331: Then why does my car not start to spool until about 4400 rpm and does not see full boost (13+psi) until 5400 rpm?

? Care to clairfy what this has to do with me? What are the specs on the T3/T4 you're running, that sounds a bit slow unless you're running like a T3/62-1........

[YellowITR479]

"Care to clairfy what this has to do with me?"

Absolutely nothing, seen the word "turbo lag" and I knew I had a problem with it and you sounded like you knew so much about the subject I figured I would ask you the question. As far as the turbo goes, I bought the turbo used and when the seal went in it about 2500 miles ago, I sent the turbo out to a shop and I got a call a couple of days later from the guy I sent it out to and he asked me what the turbo came off of and said that it had some mods on either the compressor or the exhaust wheel (dont remember which) and had some porting done (is it possible to port a turbo?) and he laughed when I told him what I had it on. That would probably explain why my car spools so slow, I dont have enough power currently for my turbo.

[1gspot]

its nice to see my post has sparked such "enthusiasm"

[XixGenuinexiX]

turbo lag = traction

[CivicSpoon]

Originally Posted by XixGenuinexiX

turbo lag = traction

Exactly, my buddy has a t25 on an H22 and he gets no traction at all in 1st and the first half of 2nd gear. If he had a bigger turbo and some turbo lag, he'd be able to get traction and get good ¼ mile times; whereas now he's got a torque monster "sit n' spin."

[boosted331]

Originally Posted by YellowITR479

"Care to clairfy what this has to do with me?"

Absolutely nothing, seen the word "turbo lag" and I knew I had a problem with it and you sounded like you knew so much about the subject I figured I would ask you the question. As far as the turbo goes, I bought the turbo used and when the seal went in it about 2500 miles ago, I sent the turbo out to a shop and I got a call a couple of days later from the guy I sent it out to and he asked me what the turbo came off of and said that it had some mods on either the compressor or the exhaust wheel (dont remember which) and had some porting done (is it possible to port a turbo?) and he laughed when I told him what I had it on. That would probably explain why my car spools so slow, I dont have enough power currently for my turbo.

If it's taking you to 5400+ RPM's to reach spool with a T3/TO4E 50 trim something is wrong. What do your AFR's look like in the lower RPM range? How much timing are you running? What kind of a manifold? Checked for leaks around the manifold flange, wastegate flange, turbo flange, etc? How about boost leaks? Are you sure your wastegate is connected properly? That definitely sounds off, my girlfriend is running a B16 with 9:1 JE's and eagle rods with a .63 A/R SC61 and she is seeing 1 bar of boost by about 5500!

[YellowITR479]

That is when I get full boost, right around VTEC. As far as the leaks go, there isnt any as far as I can tell ( still trying to figure out a way to stick my head under the hood while in boost ). My wastegate is a different story, the guy that put my motor together took the wastegate apart and said that there is no spring inside of it, could this be the reason. My air/fuel is not known in my car cause I got no way to check it ( on my long list of shit I need ). I did lose a bolt on the wastegate flange but the car's spool never changed, the sound just got louder. I definately agree with CivicSpoon, I really dont have a problem w/ tire spin, my car only starts to haze the tires around 7000 rpm in 1st and it wont break them loose in 2nd, but I think that has alot to do w/ the LSD and the long gears. I wa