ON3 70mm turbo - Who has used it? - Forums at Modded Mustangs
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post #1 of 22 Old October 10th, 2013, 05:49 PM Thread Starter
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ON3 70mm turbo - Who has used it?

Hi -

Anyone here that has run an ON3 70mm turbo please chime in with what power you have made?

I am wondering if the 70mm is capable of making 600 RWHP with a .68 or .81 ex housing. Considering I am running stage 2 turbo cams & E85.

Please let me know any experiance you have. I need to ensure I get the right turbo setup so I don't waste my tune.

** I don't have $1+K to spend on a new upgraded turbo now. I can only afford a new exhaust housing.

thank you!

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post #2 of 22 Old October 10th, 2013, 06:17 PM
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post #3 of 22 Old October 10th, 2013, 07:31 PM
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I'm familiar with it on my friends car. That 70mm probobly won't make 600rwhp. The exhaust housing is pretty restrictive.

You'll need to step up to a real turbo to do all of that.

Check out this turbo.

Precision Turbo 76mm Compressor Wheel, 68mm Turbine Wheel - Justin's Performance Center

It'll pretty much bolts into the place of the turbo that comes with the kit and will support a ton more power.


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post #4 of 22 Old October 10th, 2013, 07:55 PM
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I've noticed that most people that run the on3 turbo are in the 400rwhp range...it seems that if you want more (reliably) you should fork over the cash for a decent turbo...you can get a brand new turbonetics turbo for like $800

Go turbo, don't look back.
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post #5 of 22 Old October 10th, 2013, 09:22 PM
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Quote:
Originally Posted by sharkbait View Post
I'm familiar with it on my friends car. That 70mm probobly won't make 600rwhp. The exhaust housing is pretty restrictive.

You'll need to step up to a real turbo to do all of that.

Check out this turbo.

Precision Turbo 76mm Compressor Wheel, 68mm Turbine Wheel - Justin's Performance Center

It'll pretty much bolts into the place of the turbo that comes with the kit and will support a ton more power.
how's the piping is it good quality stuff? does it fit together well?


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post #6 of 22 Old October 10th, 2013, 09:33 PM
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I used a hellion kit which had great fitment but custom piping will always make more power. For moderate levels of power on3 should be ok. A decent 76 trim will make 600 pretty easy. I have ran as large as a 1.32 ar housing and spooling wasn't too bad and I'm a manual tranny




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post #7 of 22 Old October 10th, 2013, 09:54 PM
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Im running the on3 70mm and put down 430 corrected on 10 pounds of boost with very little timing. It would be interesting to see what it would do with 8 more pounds of boost and 4 or 5 more degrees of timing.
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post #8 of 22 Old October 10th, 2013, 10:04 PM
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My PTE will make 600rwhp but it's a $1600 snail.

Push the stock one till you can't and go from there

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post #9 of 22 Old October 11th, 2013, 01:08 AM
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Quote:
Originally Posted by SSG Pate View Post
how's the piping is it good quality stuff? does it fit together well?
Honestly? It's junk compared to a Hellion setup.

We've pretty much had to re do everything in my friends car. It's great for a 400rwhp car. But when your trying to step up to big power everything has to be changed.

Wastegate is in a poor location and it's too small.

Turbo pipes hit the control arms.

Turbo sits like 3mm away from the water pump pulley.


853rwhp @ 23psi
75mm Turbo 5.4 swap E85
#turbo2v

10.11 @ 138mph STOCK LONGBLOCK
9.11 @ 149mph - New Longblock /w Powerglide

www.JPCracing.com 410-729-0005 ext. 11

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post #10 of 22 Old October 11th, 2013, 08:28 AM Thread Starter
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Quote:
Originally Posted by Sonic 02 View Post
Im running the on3 70mm and put down 430 corrected on 10 pounds of boost with very little timing. It would be interesting to see what it would do with 8 more pounds of boost and 4 or 5 more degrees of timing.

What is the rest of your setup? Do you happen to have a dyno sheet / graph?

I am hoping for 8 more lbs & as much timing as she will take before she stops making power. E85 should spool it a tad quicker too.

---------- Post added at 07:23 AM ---------- Previous post was at 07:19 AM ----------

Quote:
Originally Posted by redrocket View Post
I used a hellion kit which had great fitment but custom piping will always make more power. For moderate levels of power on3 should be ok. A decent 76 trim will make 600 pretty easy. I have ran as large as a 1.32 ar housing and spooling wasn't too bad and I'm a manual tranny

Thanks - Do you think a 76 mm with a .80 ar / .81 AR ex would do the trick? OR do you think I can get close with my current 70mm ON3 turbo with an housing swap to .81?

I just want to get close if not right to 600. I would be happy with 580+ probably.

---------- Post added at 07:28 AM ---------- Previous post was at 07:23 AM ----------

Quote:
Originally Posted by 02gt2v View Post
I've noticed that most people that run the on3 turbo are in the 400rwhp range...it seems that if you want more (reliably) you should fork over the cash for a decent turbo...you can get a brand new turbonetics turbo for like $800

I am not worried about the reliability at this point. I just want to make the power and get tuned. If the turbo fails I will probably have saved enough to get a new one. I just want to get the most out of what I can now.


Upgrade to a .81 housing worst case? how could that help?

Lets say I can upgragde to the turbonetics.... Will this kit be capable of making over 600 with it? if I upgrade the WG?

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On3 2nd gen kit, 78/68 Benita, E85, - 628/654 16psi | 677/695 18psi {Just swapped in the Edelbrock, 6061 plenum, 75mm tb, & 4" intercooler} Need new tune.
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post #11 of 22 Old October 11th, 2013, 08:45 AM
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I like the .96 housing. Give you some room to grow and no back pressure issues




RET tuned 1058whp/935tq
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post #12 of 22 Old October 11th, 2013, 08:58 AM
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Originally Posted by redrocket View Post
I like the .96 housing. Give you some room to grow and no back pressure issues
What he said ^

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post #13 of 22 Old October 11th, 2013, 09:23 AM
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here is the graph. It had an exhaust leak at the turbo that I missed when it was on dyno. so it gets into boost a little quicker than what the graph shows. Set up is a stock 2v from oil pan to valve cover except for NA cams and injectors. very conservative street tune with 12* of timing. It made 430 on 13* of timing but we took 1* out because I wanted to stay closer to 400 rwhp. As for the turbo kit its a precision 4 core IC, turbosmart pro gate 50mm vibrant v bands and Race part solutions blow off valve. The only thing left from on3 kit is turbo and pipe tubing. I haven't had any trouble with turbo but it will be replaced with a custom one from Work turbo chargers on my new set up.

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post #14 of 22 Old October 11th, 2013, 11:04 AM
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Definitely possible, a member here who I bought my kit from was around 650 on pump gas and stock cams on 13lb.

https://www.moddedmustangs.com/forums...o-results.html

Granted though he did have a Trickflow intake and heads which helped a lot.
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post #15 of 22 Old October 11th, 2013, 12:06 PM Thread Starter
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Quote:
Originally Posted by shadows View Post
Definitely possible, a member here who I bought my kit from was around 650 on pump gas and stock cams on 13lb.

https://www.moddedmustangs.com/forums...o-results.html

Granted though he did have a Trickflow intake and heads which helped a lot.
So that was with the 70mm and .68 ar housing huh? I have seen people on this site say that it would choke off.

This makes me feel like with the 70mm and .81ar it could make 600 on E85 with turbo cams.


*** IN that other post he has Trick Flow heads and stock cams. I am wondering if stock heads with turbo cams would help. I am wondering really what Stage 2 turbo cams vs stock cams in stock heads would do? How much more power are the cams really worth?

I don't want to get the stage 2 cams if they are only worth 20-30 horsepower up top Humm.....

---------- Post added at 11:06 AM ---------- Previous post was at 11:02 AM ----------

Quote:
Originally Posted by redrocket View Post
I like the .96 housing. Give you some room to grow and no back pressure issues
What do you think the .96 would be better over the .81? Remember I won't really want to grow and a housing is only $70. I want the best powerband a peak HP out of my setup. Once I get it running I will be saving for some driveline upgrades.

On a side note - how much hp do you think stage 2 turbo cams vs stock cams in stock heads would be worth with this setup?

---------- Post added at 11:06 AM ---------- Previous post was at 11:06 AM ----------

Quote:
Originally Posted by Sonic 02 View Post


here is the graph. It had an exhaust leak at the turbo that I missed when it was on dyno. so it gets into boost a little quicker than what the graph shows. Set up is a stock 2v from oil pan to valve cover except for NA cams and injectors. very conservative street tune with 12* of timing. It made 430 on 13* of timing but we took 1* out because I wanted to stay closer to 400 rwhp. As for the turbo kit its a precision 4 core IC, turbosmart pro gate 50mm vibrant v bands and Race part solutions blow off valve. The only thing left from on3 kit is turbo and pipe tubing. I haven't had any trouble with turbo but it will be replaced with a custom one from Work turbo chargers on my new set up.
Thanks for this! Reps man.

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post #16 of 22 Old October 11th, 2013, 12:54 PM
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I have had back pressure issues before and it ages your turbo. .96 housing isn't that big at all. If it were me if run the.96




RET tuned 1058whp/935tq
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post #17 of 22 Old October 11th, 2013, 01:29 PM Thread Starter
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Originally Posted by redrocket View Post
I have had back pressure issues before and it ages your turbo. .96 housing isn't that big at all. If it were me if run the.96
okay - thank you for your info Any opinions on what stage 2 turbo cams vs stock turbo cams would do in terms of difference on my setup? Not sure if I should do the cams or just get a better turbo for more power.

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post #18 of 22 Old October 11th, 2013, 01:44 PM
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Quote:
Originally Posted by sharkbait View Post
Honestly? It's junk compared to a Hellion setup.

We've pretty much had to re do everything in my friends car. It's great for a 400rwhp car. But when your trying to step up to big power everything has to be changed.

Wastegate is in a poor location and it's too small.

Turbo pipes hit the control arms.

Turbo sits like 3mm away from the water pump pulley.
Was this the first kit or the new forward facing kit?



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post #19 of 22 Old October 11th, 2013, 02:03 PM
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On a turbo with mild power a cam isn't going to make a huge difference over the stock cam. I would go with a solid precision 76 and call it a day




RET tuned 1058whp/935tq
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post #20 of 22 Old October 11th, 2013, 02:24 PM Thread Starter
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Was this the first kit or the new forward facing kit?
Mine is the New forward facing kit 2nd gen ___ I just realized you asked the person who posted that.

---------- Post added at 01:24 PM ---------- Previous post was at 01:23 PM ----------

Quote:
Originally Posted by redrocket View Post
On a turbo with mild power a cam isn't going to make a huge difference over the stock cam. I would go with a solid precision 76 and call it a day
So you think that with Stock heads w/ upgraded springs & stock cams running a percicion 76mm VS Same heads with Stage 2 turbo cams with ON3 70mm turbo -- The 76 would make more power and a better power band?

" Drive Fast - Take Risks "
On3 2nd gen kit, 78/68 Benita, E85, - 628/654 16psi | 677/695 18psi {Just swapped in the Edelbrock, 6061 plenum, 75mm tb, & 4" intercooler} Need new tune.
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