small 16G, 16G, big 16G, 18G, which!?

[iroibeirt]

looking for a turbo upgrade, and ive been looking around for a long time and ive heard different things about each, i was actually considering the big 166G, but i just read a thread that the big 16G has a lot more turbo lag than the small 16G, my car is a daily driver and i dont want too much turbo lag, in addition, i know the big 16G will give a lot more power on the top end (which is good!) but at the same time i dont want my engine to slowly die due to too much top end power without enough internal engine work done, right now with the t25 im lacking top end power but pushing a lot of low to mid range power, which turbo should i get to distribute my power more evenly across the rpms? also, what are the power delivery differences between the small 16G and the t25?

 

[hd223]

An important thing to help you decide on what turbo you want to get is your goal for how much HP you want to be pushing. Just getting a big turbo without proper supporting mods won't do you any good, and why get a bigger turbo than necessary if you're not even going to be making the HP? Just try to be a little more specific, and we can help you figure out what would be best for you.

 

[iroibeirt]

well, if looking at my mod list, you can see that i have gotten a good start on my car,,, turbo timer, intake, bov, intercooler piping, fmic, turbo-back exhaust, and SAFC and Profec B are on the way to come,,, now, i know that the greddy boost controllers have an "overboost" option, and im hoping to push about 250 hp to the wheels with stock psi, and 300 hp to the wheels with overboost, but at the same time, im not trying to lose any low end power (it still is a daily driver), i know the big16g says it can support up to 380 hp at 22 psi, but truthfully im trying to run about 11-12 psi, and 15-16 psi overboost, i would run higher, but i dont want to get greedy with my power and boost too much, thanx again for all the help

 

[GRNDSM]

>i was actually considering the big 166G, but i just read a thread that
>the big 16G has a lot more turbo lag than the small 16G

I will challenge anyone to tell regular 16G from big 16G. They are identical from power and from lag perspective.

>also, what are the power delivery differences between the small 16G >and the t25?

HUGE! T25 is dead from 6k rpms. A 16G will pull all the way to 7500rpms. But it does have more lag than a T25.

The think to keep in mind that FWD car can not use a lot of bottom end torque anyway. So you should be fine with slightly laggier turbo.

Leon
RR

 

[BatmanGSX]

Realistically, for the average guy, those turbos offer around a 20-30hp range (meaning you aren't maxing out the turbo and you are average tuner without a dyno/WB). How much is 20hp worth? If money is not that big an issue the 18G is the way to go. There isn't a whole lot of spool up difference in any of the G wheels provided you retain the TD05H turbine wheel. From a cost persective I would go with the Small 16G or just step up to the 20G. Although some companies have good deals on the B16 now.

 

[dukmahsik]

get a small 16G then... you can still run decent times properly setup on it

 

[custom240sx]

my 17c is a great mid to top end turbo. It is pretty strong too. Dont let anyone tell you otherwise. Before i got the turbo everyone was like "you will be disappointed with it" bullshit. I live it. It starts to build boost low and holds it to 7500

 

[candela]

I agree with GRNDSM all the way. I have a big 16g and run about 16-18psi on the street (changes at night, cuse its drops from 100* to 70 at night...) and it hits full boost at about 3100rpm, which is plenty fast enough for me. You said your power goals are 250 to the wheels on stock boost, that will be kinda tough I would think, unless you use a litlle NAWS I think you are underestimating what these motors are capable of. You said you dont want to have your engine die down do to too much top end power from a 16g...that will not happen, unless you are not tuned properly. If tuned decently you can run 16psi just as reliably and safely as 11 psi. I think any 16g would suit your needs fine, because with the right supporting mods it can put down 300whp (not on 15psi, more like 18 or so). There have been people running lots of boost on these motors for long periods of time for a reason, bacause we can!! Don't be scaird to crank it up as long as you know whats going on

 

[iroibeirt]

thanx for the input guys

 

[BatmanGSX]

Originally posted by custom240sx
my 17c is a great mid to top end turbo. It is pretty strong too. Dont let anyone tell you otherwise. Before i got the turbo everyone was like "you will be disappointed with it" bullshit. I live it. It starts to build boost low and holds it to 7500

As long as you are happy with it... Most of us actually want to run over 15psi and still be efficient.

 

[HighPsi91]

The 17c is a fine all around street turbo at low elevations. Efficiency isnt as good as the G wheels at higher boost due to the lack of dual pitched fins but for sub 20psi it should work fairly well. I agree it would be a poor choice for someone at high elevations such as yourself Batman but there are a very few percentage of people that even take into account the affect of elevation on compressor efficiency (I know you do). Yes geography does play a role in turbo selection.

I have dealt with most all the G and C wheeled turbos. My personal favorite is still the small 16G. It requires minimal supporting mods, its real cheap, it makes for one of the easiest to drive cars, and its typical operating range keeps most people very safe (so they arent always breaking stuff).

 

[BatmanGSX]

It seems like up here you need a 50-trim or GT wheel. Although I will say this about the Small 16G, a lot of the quickest cars in Colorado have been running them, they are right up with the quickest 20G cars. I think this says a lot about it's efficiency. All the G wheels love boost though.

The bottom line with the C wheels is that if you want an all out drag car they won't do the job. If you want to use pump gas all the time and pick on 5.0s and Civics they work fine. I like to go to the track and crank the boost up to 24psi (or, well I did with the 18G).

I have experience with the 18G and also the Small 16G too, my friend has been running his at 20psi daily for years. The car is a bad motherfuc@ker. I love the Small 16G, it is also my personal favorite "G" wheel. There is something magical about it, like the Garrett 50-trim.