Sorry What Turbo Model is 2000 VR4?

[yangjiesheng]

Hi guys/gals,

Sorry, I simply can't locate the previous thread I posted.
Regarding about the Turbo Model.
:p

So, what Turbo model are VR4 running?

By the way, is there any one,
upgraded their Twin turbos, using other model?

Thanks
Jason

[matsondawson]

TD025.

Has anyone got a compressor map for it? I'd love to have a squiz at it.

Cheers,
Matt

[yangjiesheng]

Thanks Pal..

Wondering can 92 GTO Turbo able to fix to our current housing or not?
:p

Below is the spec:
GT3000 LEFT TD04-09B-6 MHI Turbo
GT3000 RIGHT TD04-09B-6 MHI Turbo

[matsondawson]

Hi,

Well I ain't an expert in the slightest, but I have looked at the numbers and it looks like it would be a pretty good upgrade from stock.
It will easily handle the 18psi required others around here have said is safe(touch wood) for a 6a13. It also wont run out of puff at 7000rpm at 18psi.

It's not a straight bolt on though, and I have no idea what you'll have to do to the ecu/bov/fuel pump/injectors/piping etc... to keep it safe. I myself also want to give this path a go at some point.

I'll stop there before I start spreading disinformation though as it's all guess work for me. Anyone have a real clue?

You might want to refer to this page <a href="http://www.stealth316.com/2-3s-compflowmaps.htm">here</a> for more info on turbo type stuff (compressor maps that is, anything else they are talking about is a completely different engine, i.e. when they say the 9b will run out of puff, they mean on a 3L GTO engine).

Cheers,
Matt

[matsondawson]

I also reckon (touch wood again) you'd be looking at more than 400hp(Assuming 70% VE at that point, once again I don't know what it really would be) for that setup. You could go higher boost/af but you'd probably have to do cams,con rods,pistons etc... to be safe(er) (wood :drunk: ) in fact probably even a bigger turbo.

[EdmundVR4]

AFAIK, the turbos' on our VR4's (EC5A) are TC03 (as stated elsewhere on this forum) & not TD025 which were used on the previous model VR4 (E84A). As for the GTO Turbos', they are TD04-9Bs' & they start blowing hot air after hitting north of 15psi (as per http://www.3si.org/forum/ ). They seem to be similar to our EC5A turbos' as regards boost limits & response & they are larger. I would really like to know if they could bolt up to our manifolds as this would be a good upgrade (TD04-13G or 15G would be even better)
Come on you enquiring minds, feel free to chime in.
I have a GTO engine, gearbox & transfer case installed in my older VR4 (E84A) & I can tell you these turbos' don't hold 18 psi to redline, more like 12-13 psi. I've been to the drag strip with this car & with a moderate launch (4000-4500 rpm) I was able to run : (weight of car = 3384 lbs minus driver. 220lbs for me)
60 foot : 1.917
1/4 mile : 12.993
mph : 108.17
I think I can do better, maybe a 12.5 with a very aggressive launch.Before the conversion from the 6A12T. this is what I ran.
60 foot : 1.873
1/4 mile : 13.826
mph : 97.4

The EC5A VR4 ran the following with the stock clutch. (slipping on aggressive launch)
60 foot : N/A (estimate 2.1)
1/4 mile : 14.189
mph : 93.36
With a good clutch I think it would do a 13.7-13.8.

[matsondawson]

Hmm... first time I've seen someone say it's a TC03. That's good to remember cause I find sod all reference to Td025's on the innernet :)

I think I worked out something like 230cfm for each turbo at 18psi 7000rpm (70%VE).
And from the <a href="http://www.stealth316.com/images/td04-09b-cfm.gif">compressor map here</a> at that point we are looking at 70% efficiency (best efficiency being 76%). What bits did I miss? (Didn't account for intercooler pressure drop)

Doesn't the efficiency give me an idea of how much hotter the air will be?

Bah! Maths :undecided

Cheers,
Matt

[matsondawson]

-------------------

[yangjiesheng]

Dear all,

Thanks Soooooo Much for the info..
:)

Currently, I'm running 1.0bar (14.5 psi)
My is a type-S (5 speed Automatic/ Invec II )

I noticed on my boost meter..

On full throttle from stationary..
A quick rise to 1.0bar.. and hold....

But once after 5500RPM...
It will slowly drop down to about 0.85 bar upon reaching 6500RPM

and once gear shift up...
The boost will resume back to 1.0bar and again slowly
down to 0.85bar..

:( is it normal due to out of puff?

I mod HKS AirFilter, Ign Cables, Denso Irn sparks, de-cat,
straight-through muffer and 2-1 down-pipe.

Oh ya.. also using Blitz SSBC boost controller and tuned using
UniChip..

Worse: 0-100km/h about 6.4 sec (Using Rspec Speed Meter)
*Best: 0-100km/h about 5.8 sec (Using Rspec Speed Meter)
*May be weather cold... :)

I'm been told by my tuner that there isn't much faster/speed improvement
if I request to go up to 1.2bar.. :(
And it is a dangerous zone to be in..
Better play safe running at 1.0bar..

Is it true?

Then again.. on a old magzine.. I read that 6A13 is built to support
up to 1.4 to 1.5bar with everything stock in it!!!!!!!!!!!

Except, we will need to mod Fuel Pump, Fuel Injector, Fuel line, Fuel Regulator and of course...
Using a Standalone ECU (Like: Mines VX-ROM) to replace the entire ECU.
And remap it..

Also the MAF (Mass Air Flow) will need to replace in order to read
higher air flow..

So.. again is it true?