Twins for 900 on fuel only

The testing went great. Unit did what expected. Made 951rwhp, so a peak loss of only 11rwhp, but average HP was up by 78rwhp/109rwtq through the powerband. The truck lit much sooner, comes up harder and MUCH better street ability which was the goal. As for the setup of the truck, I don't know all the particulars. Our job was to make it spool quicker, broader powerband without sacrificing much peak.
 
DRTurbo said:
The testing went great. Unit did what expected. Made 951rwhp, so a peak loss of only 11rwhp, but average HP was up by 78rwhp/109rwtq through the powerband. The truck lit much sooner, comes up harder and MUCH better street ability which was the goal. As for the setup of the truck, I don't know all the particulars. Our job was to make it spool quicker, broader powerband without sacrificing much peak.
Click to expand...
What's the largest compressor wheel you can offer with the 92mm turbine 1.10ar? 88?
 
DRTurbo said:
The testing went great. Unit did what expected. Made 951rwhp, so a peak loss of only 11rwhp, but average HP was up by 78rwhp/109rwtq through the powerband. The truck lit much sooner, comes up harder and MUCH better street ability which was the goal. As for the setup of the truck, I don't know all the particulars. Our job was to make it spool quicker, broader powerband without sacrificing much peak.
Click to expand...
If a 92mm is better for midrange. Would a 87 turbine be better or too restrictive on top?
 
bsmith said:
If a 92mm is better for midrange. Would a 87 turbine be better or too restrictive on top?
Click to expand...

That depends on the level of power. From testing on diesel....around once you exceed ~46lbs/min turbine flow its time to switch up a turbine wheel. 46lbs/min of turbine flow is around 100lbs/min compressor flow support. These are based on twins. On a single the PR's are different, so you can stretch it a little more.
 
bsmith said:
What's the largest compressor wheel you can offer with the 92mm turbine 1.10ar? 88?
Click to expand...

We can support the 82/83mm wheel, but haven't really tried going much above that. I believe once you reach the 125lbs/min mark on comp flow, its time to move up to the 96mm turbine wheel. The 92mm wheel stalls around ~58lbs/min of turbine flow with a T6 1.25A/R housing.
 
Sorry for the ignorance here....how do you determine the turbine flow?
If I have a turbine that is 71mm on the exducer, and have 70-80 psi drive pressure...what would the flow be? (Can you show the formula?)

I thought with all the gauges I had I would be able to tune my setup with no problems....Haa.LOL
 
And if I have 60 psi drive pressure to the primary...which has a 96mm turbine wheel with a 1.32 A/R housing...what is it flowing?
 
DRTurbo said:
That depends on the level of power. From testing on diesel....around once you exceed ~46lbs/min turbine flow its time to switch up a turbine wheel. 46lbs/min of turbine flow is around 100lbs/min compressor flow support. These are based on twins. On a single the PR's are different, so you can stretch it a little more.
Click to expand...

DRTurbo said:
We can support the 82/83mm wheel, but haven't really tried going much above that. I believe once you reach the 125lbs/min mark on comp flow, its time to move up to the 96mm turbine wheel. The 92mm wheel stalls around ~58lbs/min of turbine flow with a T6 1.25A/R housing.[/QUOTE



That's just what I needed to know.

Sounds like the 82/92/1.25 is the ticket for daily driving. I think I will give it a try unless you have anything brewing up.

The lbs/min you listed is that with a race cover? I assume it is, just making sure.

Thanks for the info Jose.
Click to expand...
 
bsmith said:
DRTurbo said:
We can support the 82/83mm wheel, but haven't really tried going much above that. I believe once you reach the 125lbs/min mark on comp flow, its time to move up to the 96mm turbine wheel. The 92mm wheel stalls around ~58lbs/min of turbine flow with a T6 1.25A/R housing.[/QUOTE



That's just what I needed to know.

Sounds like the 82/92/1.25 is the ticket for daily driving. I think I will give it a try unless you have anything brewing up.

The lbs/min you listed is that with a race cover? I assume it is, just making sure.

Thanks for the info Jose.
Click to expand...

Yes race cover and 125lbs/min.
Click to expand...
 
Extended Power said:
Sorry for the ignorance here....how do you determine the turbine flow?
If I have a turbine that is 71mm on the exducer, and have 70-80 psi drive pressure...what would the flow be? (Can you show the formula?)

I thought with all the gauges I had I would be able to tune my setup with no problems....Haa.LOL
Click to expand...

Without knowing which turbine wheel you have its hard to say. But typically the higher pressures on the turbine wheel shows the greatest amount of flow.

We explain on our site how the #'s are derived.....

Turbo Engineering Explained
 
Extended Power said:
Sorry for the ignorance here....how do you determine the turbine flow?
If I have a turbine that is 71mm on the exducer, and have 70-80 psi drive pressure...what would the flow be? (Can you show the formula?)

I thought with all the gauges I had I would be able to tune my setup with no problems....Haa.LOL
Click to expand...


Gauges only work if they are compounded with lots of stickers too. :woohoo:
 
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