Wizard
So I thought I had better make some sort of progress this weekend. Earlier in the week I ordered some gauges from Aus (I'll keep them as a surprise for now) so I figured I should get the dash pod ready (I have had the 52mm holesaw sitting around for a while now haha)
Here is the base bracket mounted, I decided to put the additional screws in, being an Isuzu! Although it did come with sticky pads and the tabs you bend into the ash tray hole make it very secure. Can't be too cautious with all those rattles though!
And then with the cover on. I might have mentioned earlier that I wanted the Raptor Dash Pod but their shipping was more then the pod itself, but then I found a reseller in Aus! Anyway, the mud pod is OK. The plastic is a little flimsy but the style actually suits the interior well. In future I might move the mud pod to the lower dash and put the bigger Raptor Dash Pod on the top.
Now the 'new to land rovers' question, how do I get cabling and pipework to the gauge pod via the ash tray?
Swaggie
I have a turbo from a Nissan SR20DET - so probably similar size to yours. It was wastegated to 9psi. I permanently closed the wastegate back in 2009 when I installed it. Boosts to 22psi. Engine and turbo are holding up fine...Originally Posted by BadCo.
One of the original isuzu turbos didn't have a wastegate.
Wizard
I've seen your turbo, and it looks twice as big! How is it with boost? Is it boosting from idle or does it take a bit to spool?
Cheers for the info though.
PS. On a side note, on a boy racer site they state 15psi the max boost efficiency for your turbo.
Swaggie
People who rate turbos like that show their lack of understanding... It is not quite that simple...
http://users.actrix.co.nz/dougal.ell...noic%20T28.jpg
However for normal driving I am sitting at 11 psi or less. Only when I am accelerating flat out up a hill will I hit 21/22.
The turbo spools early enough for my liking. Not far off idle.
Have you actually identified your turbo? It is hard to find out what was fitted to a VG20. Id there a garret id number on there?
Wizard
I have no idea about this turbo. What I can find its similar to a RB20DET turbo.
RB20T
Comp Wheel 42x59
Comp Cover .50 a/r
Turbine Wheel 51x43
.4 a/r there abouts
around 250hp max
I really need to email Dougal...
Swaggie
That is quite small. Yes you probably want to keep the wastegate but try and set it to something sensible like 17 psi.
Is it a garrett turbo? There should be a tag on the turbo with the serial number????
e.g. it will look like 466541-1
Wizard
Nope no tag. From what I understand its a Nissan turbo manufactured under license by garret.
Sent from my Nexus 4 using AULRO mobile app
Master
Take the main gauge cluster off, or at least take the speedo cable off and push it as far out of the way as you can with all the rest of the wiring attached. Inside you'll see the windscreen heater pipe. At the top of that pipe and just behind it is an opening; feed a bit of reasonably stiff cable through there and you'll be able to grab it through the ashtray hole. You should be able to attach whatever you have to feed through to that cable with sticky tape and pull it back through to the binnacle.
Swaggie
I doubt Nissan would have licensed any turbo technology to Garrett. More likely the turbo may have been a specific variant built for Nissan.
From an old thread:
http://www.aulro.com/afvb/isuzu-land...work-4bd1.html
Garrett T2/T25 hybrid.
Exhaust A/R 0.49, 47mm turbine wheel.
Too small, good low rpm boost but over 3,000rpm was delivering drive pressures of 4x boost pressure.
Garrett T25 from Nissan bluebird with the CA18DET engine.
Exhaust A/R 0.49, 51.3mm (officially 52mm) compressor wheel, 53mm turbine.
Great low rpm turbo, boosts early and quickly and will cover the engines rpm range at 15psi boost with no intercooler. Raising the boost or intercooling reaches the flow limits at lower rpm which results in shortening of the power band.
Can deliver more boost than drive pressure.
Was delivering 17psi at 1400rpm and 20psi by 1800rpm.
The current GT2052 turbos are similar size (flow wise) to this T25.
Wizard
You are a gentleman and a scholar, cheers for that.
So its not looking too bad for this turbo then.
I mean, if it turns out ****, its an easy upgrade to the CA18DET or RB25 turbo.
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