Non wastegated single

zebiraross

Nypex
Oct 15, 2011
63
0
0
Utah
I've been looking at the epr s366/t4/clipped turbine wheel single kit. Just wondering if anyone ran or runs a non gated single. I'm a little concerned about not being able to control the boost levels, so my main question is how much boost would I expect to see without a gate and if I would be ok on a stock engine.
 

VeeAte

going for 10s
Dec 7, 2010
177
0
0
37
ocean springs, ms
I make 45psi with mine, I don't think you will have anything to worry about running this turbo especially if your running stock injectors/cp3.
 

zebiraross

Nypex
Oct 15, 2011
63
0
0
Utah
Thanks guys. I have the basics, 5" turbo back, edge j/a and intake. Stock injectors/cp3. Another question, I'm going to be towing about 5k lbs high elevation and steep grades. Would this be a good set up for me?
 

blk smoke lb7

<-----Lots of green $
Nov 8, 2010
5,694
0
36
57
belvidere,ill
I dont know for sure but i dont think you want to run without a wastegate its there for a reason have to have some kind of wastegate or blow off valve dont you?
 

zebiraross

Nypex
Oct 15, 2011
63
0
0
Utah
I dont know for sure but i dont think you want to run without a wastegate its there for a reason have to have some kind of wastegate or blow off valve dont you?

So I'm a gas guy and trying to wrap my head around the diesel way of thinking. Help me out guys if im off but heres what I understand. I know epr offers even a s475 and 472 non wastegated single kits. From my understanding its not so much a boost issue that bends rods/breaks pistons ect. Its more of the tuning and additional fuel that is the culprit. In other words with a gas engine if one was to crank up the boost and not ad additional fuel you go lean and all he## beaks loose. With a diesel if you crank up the boost and don't add fuel you simply won't make power without additional fuel. In fact if you add more and more fuel you won't go rich and loose power like a gasser, but in fact make more and more power and get hotter and hotter.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,696
5,854
113
Phoenix Az
So I'm a gas guy and trying to wrap my head around the diesel way of thinking. Help me out guys if im off but heres what I understand. I know epr offers even a s475 and 472 non wastegated single kits. From my understanding its not so much a boost issue that bends rods/breaks pistons ect. Its more of the tuning and additional fuel that is the culprit. In other words with a gas engine if one was to crank up the boost and not ad additional fuel you go lean and all he## beaks loose. With a diesel if you crank up the boost and don't add fuel you simply won't make power without additional fuel. In fact if you add more and more fuel you won't go rich and loose power like a gasser, but in fact make more and more power and get hotter and hotter.

Thats pretty much it. Your fuel controls the turbo a diesel so less fuel means less boost (in a very generic way of putting it). The more fuel you add, the more boost you can build till you overspeed the turbo and blow it, or your egts become so high your melt a piston or drive pressure becomes overly excessive and rod/headgaskets dont hold
 

zebiraross

Nypex
Oct 15, 2011
63
0
0
Utah
Thats pretty much it. Your fuel controls the turbo a diesel so less fuel means less boost (in a very generic way of putting it). The more fuel you add, the more boost you can build till you overspeed the turbo and blow it, or your egts become so high your melt a piston or drive pressure becomes overly excessive and rod/headgaskets dont hold

Thanks, just trying to figure ask of this out.
 

TrentNell

Finally underway !!!!!
Jul 7, 2008
7,543
0
0
44
slc tuah
I've been looking at the epr s366/t4/clipped turbine wheel single kit. Just wondering if anyone ran or runs a non gated single. I'm a little concerned about not being able to control the boost levels, so my main question is how much boost would I expect to see without a gate and if I would be ok on a stock engine.

We pride our selves in personally running all the turbo kits we sell to make sure they work properly and have first hand info when the product is ordered or questions about it need to be answered , we wouldn't be selling it if it didn't work properly or wasn't safe .

The non gated S366 with the billet wheel can be run to low 50 psi range and still be with in its map but right on the edge , I rate this turbo in non gated form to 700-750 hp before it is in danger of failing , we can add a waste gate to the kit, it is optional depending on whether you choose the cheaper version with the HTT install kit or our in house install kit, our install kit comes fully powder coated any color you want , custom 4" intake / 5" filter , new 3" hot side IC tube that deletes the stock 60 deg boot , 3.5" down pipe , RDL tubular ped , stainless steel oil lines , oil drain , and all the little things needed for install , our install kit adds about 360.00 to the kit cost of the Billet S366 on our site , we will be adding the other kit to the site in a few days but its the same install iit we use on our Precision kit , its only been out for a few weeks .

I dont know for sure but i dont think you want to run without a wastegate its there for a reason have to have some kind of wastegate or blow off valve dont you?

A waste gates only job is to insure the turbo isn't run off its compressor MAP , or to limit boost but in diesels we don't care to limit boost , just have to worry about the turbo's MAP , so unless your spinning the turbo to hard the there is no gain to having a waste gate .
 

Bonestock

Active member
Aug 9, 2010
1,358
1
38
Worland Wy
epr

Follow whatever Trent tells you. He is an awesome guy with a ton of knowledge. He knows his stuff. There are plenty of references on the site.......enjoy!
 

zebiraross

Nypex
Oct 15, 2011
63
0
0
Utah
We pride our selves in personally running all the turbo kits we sell to make sure they work properly and have first hand info when the product is ordered or questions about it need to be answered , we wouldn't be selling it if it didn't work properly or wasn't safe .

The non gated S366 with the billet wheel can be run to low 50 psi range and still be with in its map but right on the edge , I rate this turbo in non gated form to 700-750 hp before it is in danger of failing , we can add a waste gate to the kit, it is optional depending on whether you choose the cheaper version with the HTT install kit or our in house install kit, our install kit comes fully powder coated any color you want , custom 4" intake / 5" filter , new 3" hot side IC tube that deletes the stock 60 deg boot , 3.5" down pipe , RDL tubular ped , stainless steel oil lines , oil drain , and all the little things needed for install , our install kit adds about 360.00 to the kit cost of the Billet S366 on our site , we will be adding the other kit to the site in a few days but its the same install iit we use on our Precision kit , its only been out for a few weeks .



A waste gates only job is to insure the turbo isn't run off its compressor MAP , or to limit boost but in diesels we don't care to limit boost , just have to worry about the turbo's MAP , so unless your spinning the turbo to hard the there is no gain to having a waste gate .

Thanks Trent, great info. I'm debating this kit and the precision kit of yours. It will be interesting to see the price difference between the two.