JamesS

Hi there,

I`m after some advice!! ( Would have used search but down!!)

I`ve got a UK 00MY with EBC, upgraded TMIC, Full decat, intake and Unichip.

Good power / torque; need more!!!

I`ve instrumented the car and above 5000-5500 rpm and 1 bar boost the TD04 is blowing hot air (like 140-170DegC at 25Deg Amb).

What I`m after is a turbo that does`nt sacrifice too much spool-up time but can hold 1-1.2bar until 6000-6500rpm with sensible temps.

I`m not after big boost at high rpm. Looking to roll power off at about 6500rpm.

I was going to go WI route, probably still will, but I don`t think thats going to help the top end that much. Better to run higher mass flow rate at same boost (ie cooler intake). Don`t want to go FMIC either!!!!!

The VF series as I understand it will do the job at 6000-7500rpm but with poor low end. Help!!!!

As a guide I`m getting 1 bar at about 2500 and 1.2 bar at around 2900rpm at the moment.

Any comments? VF22, VF28, PE Hybrid etc etc???????

john banks

James I would be interested to know what your post-intercooler intake temperatures are. I hope the 140-170 was pre-intercooler.

I am in a similar setup to you but PPP, EBC/MBC depending on mood, exhaust but the standard TMIC.

I get 19 PSI at 2500 in 5th and it drops to 14.5-15ish PSI at 6000 (in 3rd).

But because of fears for the transmission I am not changing my turbo.

JamesS

John,

Intake temps with Larger TMIC were in the 45-55Deg region during a top end 3rd/4th run.

However it was on a B-road I was really surprised. 2nd/3rd gear, lots of transient WOT moments, road speed between say 30 and 60mph. Intake at the 55-70Deg C mark!!!!

All at 25/27Deg Ambient.

These figures where similar to running my car at 1.0bar with the standard TMIC.

Basically anything over 1bar above 5500rpm and TD04 outlet temps start to rise exponentially!

I believe some of the VF turbo boys where reporting turbo out of around 80degC at 1.2 Bar at 6000/6500rpm.

Also saw your post ref a superchip car running 1.7bar and having less power than you - Go figure his intake temps must have been 70-90Deg C at the top end!!!!!!!!!!!!!

john banks

He had more PAW and was running a lot less than 1.7 bar high up granted.

WREXY

Sounds like you may need the VF29. Have a read of this thread and make sure you don't give up half way. Read it all.

http://www.scoobynet.co.uk/bbs/threa...threadid=58426

I'll be going for it in the future.

Cheers,

Wrexy.

JamesS

Wrexy,

Do you know what the spec difference is?

WREXY

From what I've been told the VF29 has a wide range torque increase. A VF22 would give more peak torque, but higher up the rev range. The 29 seems to be a good all rounder. Spools up quick has good mid range and holds out up the rev range.

I spoke to Stelios, the guy that started the other thread, and he said that the VF29 was very strong down low and continued strong till 5800 where his samco pipes were being sucked closed and causing his car to die off. He reckoned the VF29 felt stronger than the 22 till then, which the 22 is on his car at the moment, but because he had the problem and he swapped the turbo, thinking the turbo was faulty, we won't know through first hand experience how the 29 is up top.

I don't know the official specs on these.

I too was thinking the VF22 and that is what my friend, a scoob tuner from OZ, had recommended to me, right up until a couple of months ago where he told me they were having better all round success with the VF29.

Cheers,

Wrexy.

Adam M

hybrid.

wrexy, I think it is the best way to go. Start with a vf29 and *******ize it.

WREXY

Cheers Adam,

I will look into it. I am open to suggestions to try to find the one that will suit best.

Wrexy.

JamesS

Good price on the VF29 and 22 for that matter on the MRT website.(I think!)

Spoke to TurboTechnics this morning. They will have one out early this year.......muuuuummmm.

Whats the reckoning on uprated fuel pumps at this level, on a OOMY car?

WREXY

This is the cheapest place to get any VF series turbo.

http://www.dieseldist.co.nz

Cheers,

Wrexy.

WREXY

Only 787.60GBP for a VF29 and for a VF22 726.60GBP.

Cheers,

Wrexy.

Edited cos my maths was way out on the currency exchange

[Edited by WREXY - 1/25/2002 11:48:08 PM]

JamesS

Wrexy,

How didya find those prices - I just looked and couldn`t find them.....?????

Cheers.

WREXY

James they are in NZ dollars. For the prices, hit turbochargers, then view inventory, then in a box with "find", type in VF29 or whatever turbo interests you in the part number box and it will give you a description and price.

Cheers,

Wrexy.

WREXY

They are in New zealand dollars on their site I meant. Then I went to xe.com and got the GBP currency.

WREXY

Something does not appear to be right with the prices on the site. It gives you 3 options to view their prices. NZD, AUD, or USD. In the NZD option, the VF29 is listed at 2612 NZD which is 787.60GBP. If you use the AUD option, the VF29 is listed 1058AUD which is 388 GBP.

Stelios swore they were cheaper than anyone including MRT, and he bought his one from them, however if you go by their NZD option, MRT are cheaper costing 1901 AUD for the VF29 which is 697.30GBP

Wrexy.



[Edited by WREXY - 1/26/2002 12:15:21 AM]

JamesS

Wrexy,

Your one step ahead again!!!

Just noticed the same thing. Order in AUD and keep quiet eh!!!!!

WREXY

I agree m8.

Now Stelios, hopefully if he sticks to his plan, will be coming to see me this weekend. He lives 2 hours away from me. I'll ask him what he paid for his VF29 (now a VF22) and I'll post it. In the end they did swap his one for a VF22 at no extra cost.

Cheers,

Wrexy.

john banks

There is a TD04 with a 13G compressor wheel which apparently is very capable but I know very little about it - just saw a compressor map.

IS IT POSSIBLE - to change the compressor wheel and get the thing rebalanced or whatever needs to be done by a turbo specialist? Could it work out cheaper than a whole new turbo?

This may be a crazy idea, but I have been thinking about it for some time...

SecretAgentMan

I had that idea...but in the end such an operation came out 100 squid cheaper than a new VF24....so...

/J

john banks

How about nabbing a TD05 off an older car? Do they fit on the TD04 cars?

JamesS

John,

TD05 more like a VF22 I think. Higher boost threshold but not as good flow at top....

SecretAgentMan

And isn't there a difference in design between the TD04 and 05? Look at the inlet on older cars....looks like loadsa work.



/J

EMS

The inlet from the "older" TD05 makes a 90 degree turn, directly at the turbo. Besides the fact this doesn´t flow very well, you will have quite some problems to fit it to a newer car.

Mark Verhoeven.

dowser

A friend here in Switzerland has a my98 which he's just fitted a modified OE turbo (what's fitted to the my98 as standard?) to - the air compressor wheel has been changed and the housing modified to suit.

I'm waitong to try it

Richard

Mark Pitchford

I seem to remember Pat modifying a TD05 with good results!

Do a search on http:\\bbs.22b.com

I'm sure it was there...

[Edited by Mark Pitchford - 1/28/2002 12:48:28 PM]

john banks

Had a look on 22b. It was a MY97 IIRC, but there was another thread in Engine forum with hybridizing a TD04L, but there is no outcome posted.

I just wondered if it would be an easier job just to put a beefier compressor wheel on a TD04L and have it balanced or whatever you have to do with a turbo, just to hold a bit more up top.

carlos_hiraoka

John, you'd probably know already about it:

http://www.i-club.com/forums/showthr...e+hybrid+turbo

Carlos H.

Stelios

I had both VF29+VF22 but my SAMCO hose was sucked shut.
The VF29 was something of a beast low down with MoTeC and with the PPP ECU spooled a tad earlier than the original one despite being larger. Cant really say bout the top end grunt as the boost dropped abruptly at 5800 but its my idea that it was at its peak at that revs.
The VF22 is a different proposition. Car is completely linear to the redline no signs of tiring at all. Cant speak of lag as such its just the lack of the kick at 3000-3500 of the OEM turbo and VF29. However the VF22 is certainly the "correct" turbo for the car. Its like a an EVO in power delivery and there is no lack of power downbelow the 4000 rpm. Turbo kicks in gradually from 3000 to 5500 and when i first drove it i thought it was nothing special. And then i drove it on my test b-road ,whoa things do pass by A LOT faster. The clutch was slipping cause of xtra power had to put an Sti one (and flywheel )
Mind u i do have a MoTeC ecu that really can be tuned to manage the power delivery at will.

Mark Pitchford

John,

if I remember correctly it was in an answer to one of my questions about upgrading the turbo on my wagon!

Found it:

http://bbs.22b.com/ubb/Forum8/HTML/000158.html

I never did get round to this... hmmmm...