Chikinhed's Mini Build

[dburt86]

thats a MUCH different scenario then flooring it on a inertia type dyno.

so if it makes 5 psi at 2500rpm on a inertia type dyno, what would happen if you brake boosted it in 5th gear at 2500rpm?

Maybe this is all true. I could see a 3582 spooling pretty quick, but jesus.

[Matutino]

Hold off until I get it on the dyno. It's a lot of work to change turbos and I'd like to see what the actual gains are.

Surfing the internet I found a good deal on a t3 divided .82 turbine housing and pulled the trigger, is going to be a good comparative against the 1.06.
I'm going to try to Dyno this week before I start taking her apart

[chikinhed]

thats a MUCH different scenario then flooring it on a inertia type dyno. so if it makes 5 psi at 2500rpm on a inertia type dyno, what would happen if you brake boosted it in 5th gear at 2500rpm? Maybe this is all true. I could see a 3582 spooling pretty quick, but jesus.

This is why I've posted datalogs and dyno charts (not for this turbo yet). And no brake boosting cheating was done on either.

[Butters Stoch]

Surfing the internet I found a good deal on a t3 divided .82 turbine housing and pulled the trigger, is going to be a good comparative against the 1.06.
I'm going to try to Dyno this week before I start taking her apart

1.06 ts is basically same if not smaller than .82 open. I think something is either wrong with big boost leak, timing or that turbo. I'll try to get some low rpm pulls on mine to compare to yours. You should be ahead of me in spool as my turbo is a bit bigger. But I have a 1.0ar basically same as you.
Text me your logs, and I will duplicate the conditions and log.

[rajicase]

1.06 ts is basically same if not smaller than .82 open. I think something is either wrong with big boost leak, timing or that turbo. I'll try to get some low rpm pulls on mine to compare to yours. You should be ahead of me in spool as my turbo is a bit bigger. But I have a 1.0ar basically same as you.
Text me your logs, and I will duplicate the conditions and log.

I agree my s366sxe was spooling significantly quicker. Doesn't make sense.

[Matutino]

1.06 ts is basically same if not smaller than .82 open. I think something is either wrong with big boost leak, timing or that turbo. I'll try to get some low rpm pulls on mine to compare to yours. You should be ahead of me in spool as my turbo is a bit bigger. But I have a 1.0ar basically same as you.
Text me your logs, and I will duplicate the conditions and log.

Every person I spoke to disagrees with the statement that .82 is the same as divided 1.06.
The only similar set up is CESs with standard gt35r and stock cams, my set up has a bigger wheel and bigger cams and the difference is 300 rpm which makes sense.
I will text you the logs

[chikinhed]

More data. This one is a 4th gear pull from below 2000 rpm on a flat road. Marker points are at 5 psi, 10 psi and 20 psi.

[pbonsalb]

20 psi at 3200 in 4th from a 66mm turbo on a pump gas tune cammed S52 seems great to me. Might be in the 625 rwhp range. When is the dyno?

[chikinhed]

How are you guesstimating whp?

[Butters Stoch]

I would hope for more than 625

[chikinhed]

If I was at 660 whp at 24-25 psi ont the GTX and I'm at 21 psi on the efr, 625 whp might be right.

[pbonsalb]

How are you guesstimating whp?

I don't think a twinscroll turbo or manifold makes any more peak power than open ones. Might even make less. But I do think the bigger turbo is more efficient in both the compressor and turbine in the 600+ rwhp power level than the smaller one you had before. CES made about 690 rwhp SAE at about 20 psi with a 1.45 back housing on race gas with a race gas tune. I think you should make less than that on pump gas with a 0.92 housing. My conservative guesstimate is 625 rwhp SAE Dynojet at 20 psi. Might get 650, but I'd rather be excited than disappointed so I choose the lower end of the range.

[rajicase]

I guess 643whp at 20 psi. Chikin do a give away; anyone who guesses right within +/- 1whp wins something.

[Matutino]

I don't think a twinscroll turbo or manifold makes any more peak power than open ones. Might even make less. But I do think the bigger turbo is more efficient in both the compressor and turbine in the 600+ rwhp power level than the smaller one you had before. CES made about 690 rwhp SAE at about 20 psi with a 1.45 back housing on race gas with a race gas tune. I think you should make less than that on pump gas with a 0.92 housing. My conservative guesstimate is 625 rwhp SAE Dynojet at 20 psi. Might get 650, but I'd rather be excited than disappointed so I choose the lower end of the range.

Do you have the Dyno for the 1.45 housing?

[pbonsalb]

Do you have the Dyno for the 1.45 housing?

Attachment 601896

[chikinhed]

Something strange is happening with my new set up. The AMS-500 is still set at 7 for low boost and 13 for high boost. You add those numbers to the spring pressure to get the max boost pressure settings. I'm guessing that with the new manifold and the new waste gates (14 psi springs) that something isn't right. I should be seeing 21 psi and 27 psi but I'm only seeing 18 psi and 21-22 psi. I use to see 20 psi and 24-25 psi with the old set up and those settings on a 13 psi WG spring. I will have to do a boost leak check to make sure that I don't have a boost leak somewhere but that is a big difference.

I think Steed should modify the manifolds to accept this......

http://www.turbosmartdirect.com/Prod...psi-Black.html

[pbonsalb]

I don't want another TS WG. Don't think much of them. Poor boost control compared to Tial. But there is a WG out there in 50mm that fits a 44mm flange. It's not compact so it will have clearance issues to the SAP tray but I think the taller WG have more piston movement and open more and may flow more. I forget who makes it. Maybe JG Tool or something like that.

[wazzu70]

These used to be the rage, but I never see them on here. Reaction time is supposed to be fast. Not sure if thats the issue or the gate is just not big enough.

http://www.synapseengineering.com/v4/wg/

[chikinhed]

What are you referring to Nick?

[chikinhed]

The new AMS-500 V2 looks pretty awesome.....

[Matutino]

The new AMS-500 V2 looks pretty awesome.....

That's great, if affordable I'm getting one, that way I can blame another complicated set up if not running right

[wazzu70]

What are you referring to Nick?

The wastegates. It was in reference to Phils comment of the Turbosmart not flowing as good as the Tial. I was just curious if anyone has used the Synapse gate on one of these manifolds as that used to be considered the baller setup.

[chikinhed]

I turned the boost to what should be 28-29 psi and the max boost is still only 21-22 psi. I either have a big boost leak or the Turbosmart waste gates are being pushed open with 14 psi springs. The boost is also tapering off from 22 down to 19 psi.

[pbonsalb]

Any chance that controller needs to be set up differently for dual WG? You could try a 4 port actuator. Or maybe 2 three port actuators. Are you using efr solenoid or Mac? Efr has small internal passages. I doubt 14 psi springs are not holding 22 psi.

[Butters Stoch]

Any chance that controller needs to be set up differently for dual WG? You could try a 4 port actuator. Or maybe 2 three port actuators. Are you using efr solenoid or Mac? Efr has small internal passages. I doubt 14 psi springs are not holding 22 psi.

John mentioned that dual gate needs to be setup different.