Vf52 experiences vs 46

[dr20t]

If you honestly believe a few hundred rpm of lag will make a difference from a standing start over 400-600m you're dreaming.

Even up to 100kph. Especially with the auto, brake boosting is my friend. 3.6 0-100 time is quick enough but with my new setup I'm aiming for flat 3.0 second launching at 3800 and full boost

[peadya100]

If you honestly believe a few hundred rpm of lag will make a difference from a standing start over 400-600m you're dreaming.

Even up to 100kph. Especially with the auto, brake boosting is my friend. 3.6 0-100 time is quick enough but with my new setup I'm aiming for flat 3.0 second launching at 3800 and full boost

Can you seriously do 0-100 in 3.6 seconds??? thats lightning fast!!
What power are you running at the moment?
How do you time it? Id be interested to try it in my car before and after the new turbo.

[Manaz]

How do you time it? Id be interested to try it in my car before and after the new turbo.

Totally off topic - but which turbo?

VF52 is inbound for me...

[peadya100]

How do you time it? Id be interested to try it in my car before and after the new turbo.

Totally off topic - but which turbo?

VF52 is inbound for me...

Hahaha its probably back on topic actually

VF52 for me as well.. I bought one off ebay while i was in america and it arrived this week.

[bass_straitener]

Good choice guys.

You'll be very happy.

As I said earlier, it's not a drag strip turbo for quarter mile times etc, but on the street you'll be very happy with the upgrade.

For someone like Jaydece to say it's a good choice means a lot as he's had numerous turbos on his cars with various build iterations.

He's driven my car and we've had some fun times too, so he knows how they go.

The VF52 fits up easily with minimal mods to the heat shields, no need to re-route oil and coolant lines and mates perfectly with the TMIC etc.

MSR recommends it so that's a good indicator of it's perfomance ability in a mildly modded car.

Sure you can get big turbos but be prepared with a larger budget to deal with the consequential issues.

[dr20t]

If you honestly believe a few hundred rpm of lag will make a difference from a standing start over 400-600m you're dreaming.

Even up to 100kph. Especially with the auto, brake boosting is my friend. 3.6 0-100 time is quick enough but with my new setup I'm aiming for flat 3.0 second launching at 3800 and full boost

Can you seriously do 0-100 in 3.6 seconds??? thats lightning fast!!
What power are you running at the moment?
How do you time it? Id be interested to try it in my car before and after the new turbo.

From my official fastest 1/4 mile time and the calculator

Without brake boosting its closer to 4.2 seconds which was still quick

That was when it was putting out 255kw atw

Should make over 320atw now and thus allow 3.0 second flat for 0-100

Bruce - agree the vf52 is a good all rounder was just exaggerating the effect of a big turbo that's all

I still don't mind lag - its awesome when you get used to driving with it actually

Mick

[agan]

The VF52 fits up easily with minimal mods to the heat shields, no need to re-route oil and coolant lines and mates perfectly with the TMIC etc.

Sure you can get big turbos but be prepared with a larger budget to deal with the consequential issues.

Will you be looking to upgrade TMIC to say a ProcessWest?

What other consequential issues would there be to consider aside from TMIC?

God this is bad. Shouldn't be looking but oh well. We live only once!!

[bass_straitener]

Will you be looking to upgrade TMIC to say a ProcessWest?

What other consequential issues would there be to consider aside from TMIC?

God this is bad. Shouldn't be looking but oh well. We live only once!!

I do have a upgrade TMIC in the AVO. Much of a muchness really which one you go for. From going through this whole modding experience, the reason for the upgrade TMIC is not as much to do with cooling efficiency as much as strength. The stock TMIC has plastic end tanks crimp fitted to the aluminium tube and fin core. There is a chance of leaking at the end tanks when increasing boost in a tuned car. The tube and fin core is more efficient at heat transfer, than the bar and plate design seen in the Perrin or AVO aftermarket coolers. Though the perhaps the size and depth assists in matching closely the function.

Consequential issues as higher boost possibly introducing head lift issues if there's a mechanical failure.

Again from my experience the Liberty isn't the car for too much power. The engine mounts are soft, the tranny mounts are soft, the pitch stop mount is soft. Basically all designed for comfort and cruising with as little NVH intrusion into the cabin. You start playing with more power you get a heap of drivetrain lash and then look at a heap of other mods to keep the whole thing in check and ultimately keep putting money in to fix other little things that arise from the chase for more power.

The more power you try and extract you then have to look at you injector capacity.

Where does it all stop?

Hence my like of the VF52. It's a mod that produces good results for the coin spent and performs well in the normal RPM ranges that most people travel in.

I've noticed with the guys with bigger turbos they usually have to drop one gear lower to induce the required boost to get competitive early. So a change in driving style is also required to deal with larger turbos too.

[dr20t]

Bruce you know i love you but I think you're overstating the effect of lag

At 5psi at 2200rpm in 5th gear (100kph) my car makes more torque than my previous setup at 14psi and accelerates quicker to 120kph and that's without proper tuning and rich as shit with bugger all timing.

The vf52 is still the best bang for buck for 180-220kw (range due to 98 or e85) but its not the bees knees and definitely doesn't compare to a larger turbo irrespective of great spool up

[coyote]

The vf52 is still the best bang for buck for 180-220kw (range due to 98 or e85) but its not the bees knees and definitely doesn't compare to a larger turbo irrespective of great spool up

I seem to recall a bloke in another thread suggesting 220kw was the upper limit of what an unopened EJ25 should be pushed to?

Sounds like the VF52 might just be the bees knees *.

* Pretty sure I was the first person in Australia to put a VF52 on a Liberty, so I could be biased.

[bass_straitener]

Bruce you know i love you but I think you're overstating the effect of lag

At 5psi at 2200rpm in 5th gear (100kph) my car makes more torque than my previous setup at 14psi and accelerates quicker to 120kph and that's without proper tuning and rich as shit with bugger all timing.

The vf52 is still the best bang for buck for 180-220kw (range due to 98 or e85) but its not the bees knees and definitely doesn't compare to a larger turbo irrespective of great spool up

I've been in a few libs with bigger turbos and even run up against cars with bigger turbos. At the end of the run, on discussion, the larger turboed cars have dropped down a gear lower to get their turbos spooling up as quick as possible.

Also these guys have their rev limiter increased to make use of the boost. Something I wouldn't recommend for a stock cars.

There's a whole heap of reasons why the use of a bigger turbo on a stock bottom end I don't advise. Lag is not the only issue.

Most of the guys on this forum looking at power in the 200kw mark don't need a GTX3071R or anything like that as you get all the negatives with few positives in daily driving.

Also the costs in builds like yours, I don't believe, are within the realm of the posters in this thread.

For $35K currently you can get a W211 E55 AMG which will do 4.6 0-100km with no mods and 12.2 quarter mile times.

Or for the cost of your two rebuilds a C63 is possible and ultimately a better car.

Again and this is only from my experience, if you manage to get a 1kw increase per $100 then you've done OK modding your lib with good bang for buck and fun as a daily driver.

[bass_straitener]

The vf52 is still the best bang for buck for 180-220kw (range due to 98 or e85) but its not the bees knees and definitely doesn't compare to a larger turbo irrespective of great spool up

I seem to recall a bloke in another thread suggesting 220kw was the upper limit of what an unopened EJ25 should be pushed to?

Sounds like the VF52 might just be the bees knees *.

* Pretty sure I was the first person in Australia to put a VF52 on a Liberty, so I could be biased.

Agree completely.

And advice from someone who's been there done that.

If PoidaGT complained about the additional lag introduced following the VF52 install, I can only imagine how a bigger turbo would be reviewed.

Unfortunately, people see a huge number on a dyno chart and reckon it must be a great drive.

[KiDo_Tuning]

Out of interest, what sort of time approximately would a 200wkw liberty do down the quater mile?

And i know theres many variables... just curious to know approx.

13.2 - 13.5 depending on driver etc

Mph between 100-103

VF52 Forester - 13.07@105mph and making less than 200Kw@wheels on Geosquealers.

Little TD04 P.E sufferer(comes on early, nothing left to finish with lol) can even get some good 1/4 mile times by making up time and even speed in the first half track.

[Boostaddict]

It really comes down to what you want.

For me, i will have a full built motor with a good sized turbo gtx3076 sized turbo for 300kw atw.... Thats my ideal setup.

Ive driven my brother datto 1600 with 290ish kw atw and that is ridiculous fun. So im think more power with more traction will be a hoot of a drive....

I have had a few modified cars too and all i keep on thinking is, wonder if i should have kept my first modified car and it would be mental now and i would own it and have a nice daily driver.

So i will build this lib up and then get a daily

[Newbie GT]

The vf52 is still the best bang for buck for 180-220kw (range due to 98 or e85) but its not the bees knees and definitely doesn't compare to a larger turbo irrespective of great spool up

I seem to recall a bloke in another thread suggesting 220kw was the upper limit of what an unopened EJ25 should be pushed to?

Sounds like the VF52 might just be the bees knees *.

* Pretty sure I was the first person in Australia to put a VF52 on a Liberty, so I could be biased.

Agree completely.

And advice from someone who's been there done that.

If PoidaGT complained about the additional lag introduced following the VF52 install, I can only imagine how a bigger turbo would be reviewed.

Unfortunately, people see a huge number on a dyno chart and reckon it must be a great drive.

Agree Bruce but he is auto and he said headers increased lag alot...