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The VAST Wagon Build


Tightmopedman9

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Thanks for the compliments, but to be honest I'm a little disappointed by the current performance level.  I had expected to be around 480whp when fully tuned on E85, but the power feels to be around 430whp. 

For next summer I will be building a RN 'R' head with a medium port job, ENEM cams, autotech retainers and springs, tubular exhaust manifold and intake manifold. I'm tossing around the idea of pairing this with a 10:1 2.3L block, but am currently undecided.

By the way, this run was made using rudimentary VVT control through M4.4, switching the cams from 10º of advance to 10º retard at 4000RPM. 

It moves... Do you have a chance to measure the acceleration with a Racelogic vbox, Driftbox, Performance box? 60-130?

I have not. I don't have any pulls till 130, but 60-100MPH is 4.85 seconds (very) slightly uphill.

Love it! Very impressive, the power is so linear it just pulls and pulls. Are the valve seats ok? Is that turbo efficient past 25psi? I think we should make a threa for videos like these, I would love to post videos of pulls and such.

I haven't done a leak down test yet. This is a compressor map from that pull, as you can see I go very far off the map past 6000RPM.

7064%20Effciency.jpg?dl=0

None of the pictures are showing in the posts. I want to see. 

Interseting, none of the pictures in the thread at all? From all of my computers they appear just fine.

Edited by Tightmopedman9
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Considering your running iirc stock cams/valves and head you would probably have to push close to 60lbs/min to get up to the 480whp goal without cams and head work but I'm no expert. I think thats very impressive considering it's awd at higher elevation and at only 24psi with that turbo. Also the e85 helps greatly. Great work!

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Nice work!

How do you know where you are in the compressor map?
Do you calculate corrected mass flow?
Do you know the compression ratio over the compressor? This is not the same as boost pressure.

What does your turbo speed sensor read? You should be over the limit for this turbo to be able to reach those points (5 and 6).

If all is correct then congrats! You have 550 - 600 engine hp!

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Nice work!

How do you know where you are in the compressor map?
Do you calculate corrected mass flow?
Do you know the compression ratio over the compressor? This is not the same as boost pressure.

What does your turbo speed sensor read? You should be over the limit for this turbo to be able to reach those points (5 and 6).

If all is correct then congrats! You have 550 - 600 engine hp!

I used the Borgwarner 'matchbot', a very nifty program. It automatically calculates PR using altitude as an input, not exactly 100% accurate, but good enough. I do not have a wheel speed sensor, but I would assume I am overspeeding the turbo a bit past 6000RPM, however I think the matchbot program is a bit conservative. Also, with a stock head I do not think that the actual airflow is approaching the theoretically calculated amount from the matchbot.

 

Do you mean crank HP, if so, yes it's probably around 550chp. However, with the AWD system intact it's probably loosing up to 30% on its' way to the ground. 

 

 

Cut%20bumper%20for%20XC70R%20bumper.jpg?

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I used the Borgwarner 'matchbot', a very nifty program. It automatically calculates PR using altitude as an input, not exactly 100% accurate, but good enough. I do not have a wheel speed sensor, but I would assume I am overspeeding the turbo a bit past 6000RPM, however I think the matchbot program is a bit conservative. Also, with a stock head I do not think that the actual airflow is approaching the theoretically calculated amount from the matchbot.

 

Do you mean crank HP, if so, yes it's probably around 550chp. However, with the AWD system intact it's probably loosing up to 30% on its' way to the ground. 

 

 

 

I have used the match-bot a bit and it is very interesting to see the behavior change when one parameter is changed and how this influences temperatures out of the compressor.

You should measure your compressor inlet pressure (preferably at three locations around the round tubing) and pressure after compressor. I am not sure if you have a china intercooler (it looks like that) and they have quite high pressure drop and not so good efficiency. This data should also be included in match-bot.

Yes, I am talking about crank HP. Real HP and not Dynojet och Dynapack =)
10-11 hp with E85 per lbs/min of air is reasonable with an efficient engine with proper camshafts. With E85 MBT is no problem and I guess that you are in the region 20-25 deg of ignition currently up in the revs.

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I have used the match-bot a bit and it is very interesting to see the behavior change when one parameter is changed and how this influences temperatures out of the compressor.

You should measure your compressor inlet pressure (preferably at three locations around the round tubing) and pressure after compressor. I am not sure if you have a china intercooler (it looks like that) and they have quite high pressure drop and not so good efficiency. This data should also be included in match-bot.

Yes, I am talking about crank HP. Real HP and not Dynojet och Dynapack =)
10-11 hp with E85 per lbs/min of air is reasonable with an efficient engine with proper camshafts. With E85 MBT is no problem and I guess that you are in the region 20-25 deg of ignition currently up in the revs.

I need more sensors in my engine bay, it is on my to-do list.  With that said, I don't think I'll ever invest in three pressure sensors before the turbo. The plan is 3 IAT sensors, pre-turbo, post-turbo and post-intercooler. Along with a pre-intercooler MAP sensor and an exhaust gas pressure sensor.

It is not a china intercooler, it is DO88.

Well I will agree with you that crank horsepower is more relevant for direct comparison, it isn't exactly practical. I have no engine dyno, nor the desire to remove the engine for testing (at this point at least). So I will base comparisons on the only way I have to directly measure power, at the wheels.

I am still on stock cams, I wanted to see how much power I could get from a 100% stock head setup (cams, intake, exhaust). I can already tell that the effciency is dropping immensely, and I will be upgrading cam shafts shortly.

I am running 13.5º at peak VE, increasing to 17.25º at 7500RPM. I haven't had the car on the dyno yet, so I've stayed at these timing levels until I can fine tune reaching MBT. With a stock head setup do you really think that MBT is as far advanced as 20º+?

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I need more sensors in my engine bay, it is on my to-do list.  With that said, I don't think I'll ever invest in three pressure sensors before the turbo. The plan is 3 IAT sensors, pre-turbo, post-turbo and post-intercooler. Along with a pre-intercooler MAP sensor and an exhaust gas pressure sensor.

It is not a china intercooler, it is DO88.

Well I will agree with you that crank horsepower is more relevant for direct comparison, it isn't exactly practical. I have no engine dyno, nor the desire to remove the engine for testing (at this point at least). So I will base comparisons on the only way I have to directly measure power, at the wheels.

I am still on stock cams, I wanted to see how much power I could get from a 100% stock head setup (cams, intake, exhaust). I can already tell that the effciency is dropping immensely, and I will be upgrading cam shafts shortly.

I am running 13.5º at peak VE, increasing to 17.25º at 7500RPM. I haven't had the car on the dyno yet, so I've stayed at these timing levels until I can fine tune reaching MBT. With a stock head setup do you really think that MBT is as far advanced as 20º+?

Hi again!

Nice plan with the extra sensors! And I was quite unclear in my description of pre turbo pressure: One sensor, but three (or more) pressure outlets. This is how we use it in OEM and the pressure on the intake side tends to vary if you measure in the inner or outer radius e.g. But one should be enough!

With stock cams, what volymetric efficiency did you enter in match-bot? That might be the case with going out of the compressor map. Stock cams = low VE, especially at higher engine speeds. The duration is simply to short. Way to short. But you seems to have a plan so nice doing it in steps. Cant wait for the next results! If I remember correctly, you ordered quite aggresive cams?

DO88 is China. But their new version seems to be a good upgrade from the other ones available (same ones all?). I did a C70 with cams and upgraded K24 with E85 and the china intercooler (not Do88s new one) really lowered the cars performace. Your measurments will soon tell!

All whiteblock Volvos seems to end up in the same area regarding ignition with E85. I do think it is above 20deg but I will get back to you. We (PRD Motorsport) will get our Rototest dyno next week and I will tune my C70 AWD (with DTA S80 Pro) ASAP. It will run on E85, but we might try petrol first. Not as nice turbo/build as yours though. I have a 16T upgraded to 20T and hoping for 400 engine HP. Then I will sell it!

Keep up the good work!

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