Sizing a turbo

[sleeoffroad]

So you're saying it's just a little slower than a stock 100-series

Uhm. I think a little faster. Stock 100 series on dyno - max hp about 200hp at the wheels. Turbo 80 about 238hp at the wheels. However not as fast as turbo'ed 100.

This week we did a SC on a 97 truck at the shop. Standard bolt on. This truck had 33" tires, standard armour and 2.5" lift. Stock gearing, so I had the chance to jump from a sc truck to turbo. After the test drive I actually checked on the sc truck to make sure the bypass was not stuck open. BTDT. It just did not feel like enough power.

Either I have not driven a stock 80 in a while, or I became spoiled between the Duramax and the turbo 100.

 

[turbocruiser]

The thing of it is, you all need to concentrate on what he doesn't say, not what he does say.

Look back at one of my simple questions and the 12 paragraph response and that fact becomes clear.

Yer right rick, funny thing is after all the awesome advice you have generated after great amounts of research and trial and then simply shared that for the benefit of bunches of mudders, you simply asked for a PASS on this one and instead got an asinine series of statements that never answered anything asked!!!

Perhaps the statement should change to "whether or not there is any perfectly perfect available turbo" what is the right compromise considering the rig and its purposes?

Ohh, but wait, everyone else already assisted with that.

 

[landtank]

In the end I got what I needed to help me get this off the ground. And thanks to everyone who helped with that


I'm sure as time goes on there will be more questions, fuel delivery comes to mind as of right now. This won't be until spring when I can take the truck down for any length of time.

 

[turbocruiser]

In the end I got what I needed to help me get this off the ground. And thanks to everyone who helped with that


I'm sure as time goes on there will be more questions, fuel delivery comes to mind as of right now. This won't be until spring when I can take the truck down for any length of time.

Ahaa!!! That's the perfect crescendo to this old opera, time to lock this thread mods!!! Rick, you are too cool man!

 

[Cattledog]

Landtank, the GT35/40R does look like a winner. Maps look pretty good for 330 hp at 6 to 7 psi. Time to reconsider the buget...

 

[sleeoffroad]

On the budget note, if you are going to use that size, you have to budget on extra fueling.

 

[landtank]

On the budget note, if you are going to use that size, you have to budget on extra fueling.

Now see that's the rub. I started thinking with my wallet. I figured that I would identify a turbo and then get an older design with similar specs. Then along the way something changed.

But at least the wife is on board now which should offset some of the wallet short comings.

 

[SUMOTOY]

Haha, I cannot figure out if he thinks that the APS/Safari System is too big or too small either, of course he says that there "is no turbo that is the right size for the 1FZFE they are all too big or too small" but of course he also has not done his dutiful homework enough to know that the APS/Safari has custom castings and that the internals do not match much that Garrett has got!

But Christo, as respectfully as I can say this, you are wrong on one thing; for the future please don't call him "the expert" ... he is anything but!!!

I'll agree with that, I'm just a newbie, I picked up the knack of reading turbo maps though

I also know that custom stuff is the way to go in a specific application, btdt. It also costs a lot of money to get right, hence why bolt on turbo kits cost big money. Hence my suggestion that ebay cheap turbos will be just that.

Turbocharging is not difficult, making it work right sure can be. There I am no newbie.

Put it on, get the fuel, get the timing, get the boost, hopefully it doesn't cost anyone a motor. Thankfully, my intercooler project is much simpler than sizing a turbo.

ST

 

[turbocruiser]

Thankfully, my intercooler project is much simpler than sizing a turbo.

ST

Thankfully the real experts at APS sized my turbo AND my intercooler for me!

 

[MSGGrunt]

Given that most of the turbos on Ebay have the T3 flange bolt pattern on the turbine side, would a turbo such as the GT35R that Rick was mentioning be a good choice for the 4.5? Would their be a problem running a T3 adapter to the T4 bolt pattern of the manifold with the GT35R?

 

[landtank]

Given that most of the turbos on Ebay have the T3 flange bolt pattern on the turbine side, would a turbo such as the GT35R that Rick was mentioning be a good choice for the 4.5? Would their be a problem running a T3 adapter to the T4 bolt pattern of the manifold with the GT35R?

That turbo can be configured with a T4 turbine.

But provided the adapter will allow the turbo room under the hood then it's fine. Be aware that the GT35Rs that are cheap on EBay are not the same as the Garretts, they are in spec only and one big omission is the lack of a water line.

 

[MSGGrunt]

What is the opinion on this turbo? I like that it is a Garrett. Appears you can spec it to what our needs would be. The price is a bit more than I wanted but I am getting tired of searching for that great deal that never can be found. If I get a couple of yeahs from Rick, Dusty etc.. I think I'm going to pony up and get this turbo. Is this a good deal on a Garrett or would I find a better deal elsewhere?



http://cgi.ebay.com/GARRETT-60-1-T0...DVWQQrdZ1QQcmdZViewItem?hash=item190031659525

 

[MSGGrunt]

What would be best, the .70 A/R or the .84 A/R? I'm looking for power at 2000 and above. Mostly for improved performance on the highway and while towing.

 

[landtank]

I can't give a yeah on that choice as I don't have the knowledge to do so. But Cattledog has mentioned this as being a good choice and I can tell you that you will want to go to tyhe .84A/R on the turbine for what you want.

You are right though, not a lot of great deals when narrowing your search to a quality product. I'm still thinking I'll save some and get that GT35R with he T4 flange when I do it.

Got what I think is a deal on a BEGi 2027 rising fuel reg today at $99.00 shipped.

 

[sleeoffroad]

Rick, I would not go with a rising rate regulator. I would use something that allows you to fire extra injectors when you need it. I just spent a week tuning a 97 truck with a turbo and I do not believe you can get the same results with a rising rate regulator. Search for SMT6 or Perfect Power. You will find a lot of sites about tuning and they might even send you to other piggy back computers that might be less expensive. You want something that can read a map sensor and allow you to tune on a fuel map.

 

[landtank]

Rick, I would not go with a rising rate regulator. I would use something that allows you to fire extra injectors when you need it. I just spent a week tuning a 97 truck with a turbo and I do not believe you can get the same results with a rising rate regulator. Search for SMT6 or Perfect Power. You will find a lot of sites about tuning and they might even send you to other piggy back computers that might be less expensive. You want something that can read a map sensor and allow you to tune on a fuel map.

It's all a learning experience Christo and this looked like a cheap item to experiment with to help understand how things interact. I was thinking that I'd probably first try this anyway before heading into piggybacks and injectors and since it showed up cheap on EBay I grabbed it.

BTW, you mention 3" SS exhaust for the turbos, does that include 80s?

 

[Cattledog]

Agree with Christo. I am looking into larger injectors currently. Not sure if the ecu will support the larger injector size. Otherwise I am looking to the megasquirt as a injector controller IF needed. Hopefully 15 to 20% larger injector will work.

 

[MSGGrunt]

Well, I just ponied up and ordered the turbo. I hope I did right. I ordered a Turbonetics T04 62-1 in P trim with a .81 A/R. Tread stone performance is having a sale. I paid $700.00. I hope this was the right choice.

http://www.treadstoneperformance.co...key=61&prodname=62-1+Turbonetics+Turbocharger

 

[MSGGrunt]

Is the 62-1 as good as the 60-1? If I get feedback that the 60-1 is better I can change the order before it is shipped.

 

[clownmidget]

Personally I'd go with the 60-1 but that's considering how "built" you intend to make this motor. That's a good price but it still looks as if those are just the oil and not the oil & water cooled units, correct?

Make a call to Turbonetics and get some feedback from them as well. They are pretty helpful from my experience.