Author Topic: Turbo kit group buy!!! (Read 19741 times)

kennysabarese · « **Reply #25 on:** November 19, 2009, 05:49:12 PM »

Mike,

What's the best turbo to use to get 450 CRANK horsepower as soon as possible and hold it to redline? At the track I usually am bouncing off the limiter.

I don't want a turbo that is too big or else it'll hit my peak power too late. I want to utilize the turbo fully.

lastly do you think the manifold is necessary for this power level?

mkriebs · « **Reply #26 on:** November 19, 2009, 06:08:32 PM »

You talking to me (it's Matt, btw, Lol... I forgive you, i get it all the time)?

First, what kind of course? Big, open, fast road course, or tight slower, technical course, or AutoX?

If you are running a tight, technical course (which I like best) or AutoX, here is what I would do. I would buy the GT28 kit, to maintain as much low end torque as possible. I would get valve springs so I could rev safely to about 7500rpm, and I would slightly port and polish the head. That, with all the bolt ons would be sufficient enough for the motor for me. If you want to get faster, get back with us have us hack off the flanges (if needed, I am not sure what flange sizes we use for each turbo), and weld on new ones, then swap the turbo out to a bigger one!

Thats how I would work it, but I am not sure what sort of track driving you do mostly.

kennysabarese · « **Reply #27 on:** November 19, 2009, 06:16:21 PM »

Road courses only from VIR to Watkins Glen to Mid Ohio. Not AutoX

kennysabarese · « **Reply #28 on:** November 19, 2009, 06:17:49 PM »

hah matt. sorry

mkriebs · « **Reply #29 on:** November 19, 2009, 06:23:28 PM »

I would definitely recommend the GT28. Its not going to give you low end grunt, per say, but it will definitely give you a beefier mid range punch. Without doing a balance shaft delete and a complete head build, you really can't rev past 8k rpm, which would put the powerband right at the end of what your engine is capable of running to with the bigger turbo.

Thats how I would do it. It may or may not be the best way to work it though. Alot depends on your driving style. I am one that would rather shift less, and use my torque to pull me through as I keep it in the middle of the powerband. Some people shift more and use the top of the powerband, which the big turbo would be better suited for.

kennysabarese · « **Reply #30 on:** November 19, 2009, 06:29:02 PM »

well the two courses i have been on so far, NJMP lightning and englishtown. i shift only once or twice on the track. from 3rd to 4th and i'm always bouncing off the rev limiter and NEVER have the tach below 4000 RPM

i don't think i need to increase the redline because i can get the horsepower level i want without revving any higher.

mkriebs · « **Reply #31 on:** November 19, 2009, 06:34:01 PM »

Ok, are you on the stock rev limit of 6250? I mean, its not necessary to raise the redline, but if you are bouncing it off the limiter, I am sure you could pick up some time by raising it, depending of course on how much you hit the limiter. Just saying thats what I, myself would do (and am doing to my car). A slight raise might benefit, and its not bad on the engine to go a bit higher. I drag raced my Cobalt all last season, and to get through the traps without shifting to 4th, I was putting it up to a 7250 rev limit (a bit cocky, really... my engine hates me for that, lol), with no problem. that itself knocked .2 seconds from my time. Thats just an example how much NOT hittin the limiter could help. Then again, if you aren;t into tenths of seconds, it won't matter as much. Its all up to the driver.

Another scenario though... with more power you will have to shift because you will hit the rev limiter quicker. So, I mean you would have to try it out and see what you like.

kennysabarese · « **Reply #32 on:** November 19, 2009, 07:18:02 PM »

when i first got this car and was on the forums, everyone said that GM says the engine can handle 400-450HP without modification. I don't wanna go over that.

regarding rev limiter: i have the GMPP sensors and tune so that is where my rev limiter is... if it's safe to raise the rev limiter that is fine.

moral of the story is: i just don't wanna break anything. road courses are already pushing the engine hard enough. i think 100+ hp boost will be enough.

i'm not that concerned about my lap times yet, i am a new racer. I usually have my fun with my revs high on the interstate, but when i get better on the track i want the car to be ready for me. so i am tuning it for road courses.

also this sale is too good to turn down so that's the only reason i am looking into it so soon, i have money put aside for 2 grand plus in seats harness and HANS device which i need for next seatson.

So with that target/limit in mind. I need to figure out the total package of mods including the turbo. If I don't have to get all those mods to get my power target, I'd rather not spend the money.

(I've heard BTF runs bigger turbos making big power on the stock exhaust!)

The only mod I am definitely planning on is putting in an exhaust cutout because I need my car to be louder on the track. (can't hear the engine for rev matching)

Also remember I'm a total newb so I'm sure there is more to it.

Kuprito · « **Reply #33 on:** November 19, 2009, 07:40:31 PM »

Quote from: kennysabarese on November 19, 2009, 07:18:02 PM

The only mod I am definitely planning on is putting in an exhaust cutout because I need my car to be louder on the track. (can't hear the engine for rev matching)

Have you thought of a shift light? Coxx turbo makes one that matches our dash light (orange) and it's small.

mkriebs · « **Reply #34 on:** November 19, 2009, 07:42:44 PM »

Ya know, I think starting out you could do just fine with the GT28 kit on the stock components. then, as you need more power/get the money for it, put some more parts on it. The stock exhaust is 2.5" already, so no, its not bad. There are some iffy bends made in it, but it won't matter with a cut out.

I think the biggest things you want to consider are things that will improve spool time, and reliability. The items that will reduce spool time are the manifold and downpipe (exhaust if you weren't doing a cutout), and those are taken care of in the kit. As for reliability, I would definitely look into an intercooler. The cooler your charge temps, the more reliable the car will be. But, then again, thats something you can add down the line. Let me know if I can put you down yet or not... the pricing is ridiculous. I couldn't believe when Dave said what the prices would be.

I have been looking at seats and HANS as well... pretty pricey mugs. Which seats do you have your eyes on?

kennysabarese · « **Reply #35 on:** November 19, 2009, 07:53:14 PM »

Quote from: Kuprito on November 19, 2009, 07:40:31 PM

Have you thought of a shift light? Coxx turbo makes one that matches our dash light (orange) and it's small.

I am going to get shift lights. I have no idea what to get. Any recommendation?

kennysabarese · « **Reply #36 on:** November 19, 2009, 07:57:55 PM »

The reason I mention that I am bouncing off the limiter is to let everyone know where i want my power. UP TOP

mkriebs · « **Reply #37 on:** November 19, 2009, 08:07:36 PM »

I hear Raptor shiftlights are nice. I have looked into one myself. But, I also found a progressive one (think F1 car style), but I don't remember where.

Uranium-238 · « **Reply #38 on:** November 19, 2009, 08:12:29 PM »

Quote from: kennysabarese on November 19, 2009, 07:53:14 PM

I am going to get shift lights. I have no idea what to get. Any recommendation?

I've been looking at the raptor lights. Small, and though they're a tick pricey I think they'd be easier to make look good than a drag racing light.

http://www.raptorperformance.com/

EDIT: Matt beat me to it! I also found the F1 style ones, give me a sec I'll have a link...though I think 2 raptors would be best. One orange/yellow one lit while in powerband/shift range, another red light a tick before redline.

mkriebs · « **Reply #39 on:** November 19, 2009, 08:16:55 PM »

I like their warning light. Might try to figure out a way to wire that into my knock sensor so I don't have to datalog all the time.

mkriebs · « **Reply #40 on:** November 19, 2009, 08:17:18 PM »

Also, from the other thread here...

It had gotten brought up on another forum how our turbo compared to Dejon's, and how we were guaranteeing one person with GMPP tune and a manual trans 450whp, when Dejon claims 450 crank hp. Here was my response (feel free to comment, discuss, or whatever):

Ours is the 5457E-B with HP technology. I am not sure which specific one they use.

Ours is rated to 460hp, by Precision, those (from my experience) seem to be extremely conservative estimated crank numbers. But, there are a ton of different aspects that play a role in how much power an engine will make from a certain turbo. Basically, the biggest one is how well does the engine use the airflow that the turbo provides. Our lovely LNF is VERY efficient when it comes to this. The DI helps cool the air charge (which makes it more dense = more hp), its a relatively high compression motor for a forced induction motor (thanks to the cooler air charge), and the tune plays a big factor.

I can only emphasize how much a good tune will do for you. I am not sure if Dejon does tuning in house, so I will not compare directly to that. But, we know our kits the best. We have installed a great number of them and have tuned them for the same amount of time. And we know how to get the power we want out of it.

So, comparing those numbers to our goals... I would say, even though they are intended for crank horsepower... on the LNF they could be more related to wheel horsepower. Not just because they are conservative numbers, but also because the LNF is very efficient with the supplied airflow, and we know how to make this kit work.

Uranium-238 · « **Reply #41 on:** November 19, 2009, 08:26:00 PM »

Bingo!

http://lumitach.com/

kennysabarese · « **Reply #42 on:** November 19, 2009, 08:34:28 PM »

Dejon has their own tune and then sells trifecta. you vendors should know each other's products so you can convince us to give you money over them.

it's all laid out on the site. honestly he has way more info on his site than you guys do.

his kit has different sized AR's available with that turbo. the bigger AR gives more top end power but increases lag.

kennysabarese · « **Reply #43 on:** November 19, 2009, 08:36:59 PM »

regarding shift lights. i am looking for two or three stage lights. lumitach looks interesting.

also http://www.ecliptech.com.au/

one more http://www.tekniqauto.com/CDN/tsport/tsport.htm

mkriebs · « **Reply #44 on:** November 19, 2009, 08:43:01 PM »

Quote from: kennysabarese on November 19, 2009, 08:34:28 PM

Dejon has their own tune and then sells trifecta. you vendors should know each other's products so you can convince us to give you money over them. it's all laid out on the site. honestly he has way more info on his site than you guys do.

his kit has different sized AR's available with that turbo. the bigger AR gives more top end power but increases lag.

Yes, I am still quite new to the Solstice world. I am picking up, but its taking time. There is a bit of a reason we do things differently at WERKS. We want to be the main source of communication to our customer, not our website. We want to personally answer questions so that we know our customers are making the decision to the best of their knowledge, and you never know if what they want to buy is what they truly need until you talk to them about the wants and needs they have for their car. that is why we try to reach you guys on Forums and more personal approaches.

So, there is a reason behind everything.

kennysabarese · « **Reply #45 on:** November 19, 2009, 10:15:15 PM »

is there any reason to be concerned about heat doing road racing with an air cooled turbo?

mkriebs · « **Reply #46 on:** November 21, 2009, 03:39:10 AM »

No, the oil will cool it just fine. Just make sure not to rip it then park it hot.

Only 5 days left guys!!!! Let me know. I will be on here alot this weekend, so please, PM me or post up with questions so I can get them answered before the sale ends!

kennysabarese · « **Reply #47 on:** November 21, 2009, 07:12:41 AM »

oh its oil cooled k

kennysabarese · « **Reply #48 on:** November 21, 2009, 07:35:25 AM »

Ok I have one dumb question. Would I get the same power results by putting airflow mods (IC exhaust, downpipe etc etc) and using a smaller turbo, versus using a larger turbo without those mods. the second method would be cheaper

mkriebs · « **Reply #49 on:** November 21, 2009, 02:15:24 PM »

Yes. And there is more potential in the bigger turbo. The big turbo kit already comes with a downpipe, since we can't utilize the stock flange, so there is one down already. Its just the fact that the spool won't be that great. But, from the sounds of it, you like to live in the top the powerband, so it shouldn't be much of an issue for you.

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Author Topic: Turbo kit group buy!!! (Read 19741 times)