turbo lag on a civic?..

[z32isa]

ive seen a few turbo civics.. and it seems that hondas are not good for turbos... they ones ive seen prolly like 4 or 5.. the turbo seems to kick in in 3rd gear well show its really power at least.. they start really slow 1st and 2nd but in 3rd the power comes out... i dunno is it the driver?? is it the lag?>. vtec?.. does anyone knows??

[Buster]

I think its just hard for a 1.6 to spool a 60 trim lol.

[Intercooled T]

agreed. bigger motors can spool a turbo quicker.

[igo4bmx]

Traction and lag.

[z32isa]

true.. but what about vws 1.8???>.. and the ones ive seen are 1.8 gsr's...

[Renegade_]

their turbos are the size of bagels. Thats how the spool em so fast

[Dave]

any size motor can be good for turbos as long as the turbocharger itself is properly sized/mapped for the application. YES you can bolt a T-88 on your civic. NO its not a good idea

[Dave]

Originally Posted by Renegade_

their turbos are the size of bagels. Thats how the spool em so fast

my peen is bigger than a k03

[z32isa]

well i dunno but i know for sure that one of them was a gsr and had a t3/t4 turbo .. thats a small turbo and still 1st and 2nd he was really slow till 3rd..

[Renegade_]

Did he rev it out all the way? It takes time to build up the compressor's speed whenever it winds down. The more air you pull over it the faster it will wind up, or spool. If it is a large compressor with a little bit of air, it will take a long time to spool, e.g. a GT35r on a B16... You will never spool it fully unless you rev to like 10k (just generalizing, I have no idea if it could actually spool it to target boost or how long it would take).

On the other hand, if you have an LS1 (5.7L v8) that will spool a GT35r no problem.

[Blown Ion]

Originally Posted by Dave

any size motor can be good for turbos as long as the turbocharger itself is properly sized/mapped for the application.

+1 Said it perfectly.

[dougiefresheq]

turbos the size of a human fist are great... the spool so quick expecialy on civics yo


and they are so small you can add like 5 or 6 of them and have a sick turbo system spooling eachother for zero lag

[Action Park]

When a turbo spools is dependant upon more than just the size of the turbo(with the hotside having a greater effect, btw). As it is a load sensitive device, the car's weight and gearing also play a huge part. I can floor my car(not a Honda by any stretch of the imagination, though the turbo principles still apply) rolling in first and still be in vacuum at redline. Yet if I launch it, I'll hit full boost nearly instantly and blow the tires off. Even if I bog it, it spools very quick after falling flat on it's face(I'd tell you how it would do with a proper launch, but with 165 series rear tires, this is no easy task!). Why is this? Load. You hear about people saying how "my turbo kicks in at 4k, yo". Great, but in what gear? It's not like a cam that "kicks in" at a certain rpm.
And do'nt forget the exhaust! With the header, velocity is key. You want as small and free-flowing a header as possible without choking things up in the upper rpm's. Too big, or small and restrictive, and the velocity suffers. After the turbo, you want as little backpressure as possible! More post turbo backpressure= slower spool, less power.
Now, back to the topic on hand, most Honda engines, if anything, are awesome motors to boost and the fact that there are TONS of very fast turbo Honda street cars proves this. Why is this?
1. The massive amount of tuners that are able to build/tune Honda engines to meet the owners' needs.
2. The massive aftermarket.
3. Reliability of a properly built powerplant.
4. The high VE of the popular Honda engines.
It's not exactly a bad thing to say that a b18c does'nt hit full boost until 4k(and remember that this is'nt a constant, lets say in 3rd wot 0 % grade 70* ambient) because that means that there is 4k in full boost. You do'nt need a lot of power to scoot around town. Yet when you get into it with a proper turbo will provide oodles of power all the way up. A small turbo will be like a semi, but it'll choke on the top end and wo'nt make the power of a properly sized turbo. This is not to say that a small turbo ca'nt make for a fast car or a big turbo for a slow one. To put up with big power, a comprimise has to be made with spool. This is true of all cars and there ar'nt very many ways around it. Wheels can only get so efficient, ball bearing chra's and vatn turbos are pricey, and too small a turbine for the compressor results in surge.
Ok, maybe I rambled a bit. Regardless, Honda engines do just fine with boost if done properly.

[Loserkidwac]

As said before youc an't just slap a large turbo on a small displacement motor and expect it to spool quick or maybe even spool at all...

if the driver wasn't "getting on it" the turbo might not spool in lower gears it needs enough exhaust pressure to spool so no load on the motor means less exhaust means less power and slower spoll...my LS dosen't make full boost in 1st only gets about 4-5psi but in all the other gears I hit 7psi no problem...

need to properly match the turbo to the motor and your power goals...

[Honest_Bob]

Originally Posted by z32isa

well i dunno but i know for sure that one of them was a gsr and had a t3/t4 turbo .. thats a small turbo and still 1st and 2nd he was really slow till 3rd..

I didnt think a t3/t4 turbo was that small. I would think a GT25 or a GT28 series turbo would be a nice match for a small displacement motor.

[underpressure02]

I don't know what you consider laggy and slow but my old setup I ran a t3/t4 57 trim and that was fully spooled by 3500 RPM's and ran consisent 12.1's

My new setup is a little laggy GT40R 1.06 AR starts to spool around 5200-5500 but is not slow by any means. If the person you are racing has a turbo civic and is slow in 1st and 2nd gear he prob does not know how to race. I can come out of the hole with the 40R making 18lbs of boost and let me tell you it does not feel slow at all.

[Raven18940]

Mostly I think a lot of people get delusions of grandeur when choosing a turbo.

I think the other problem with Hondas is their high rev limit. Having the car operate in such a wide range of revs makes turbo choice more tricky.

[igo4bmx]

Originally Posted by Raven18940

Mostly I think a lot of people get delusions of grandeur when choosing a turbo.

I think the other problem with Hondas is their high rev limit. Having the car operate in such a wide range of revs makes turbo choice more tricky.

also understand honda owners buy decent sized turbos cuz they want the turbo to be able to push enough air at higher rpms, a smaller turbo won't push enough air that the car can fall on its face even before vtec hits.

and when ure racing and staying in the upper rpm range, it matters