Jump to content
SAU Community

Recommended Posts

lolz.....funny topic.

I have only had one issue with a Precision Turbo's from John. I actually charge more to install a Hypergear turbo's due to poor clocking, Banjo fittings being different and the thing being supplied like it was just found in a junk yard.....I also offer NO reduction in costs if the turbo is stuffed within bugger all KM's due to poor oil flow on idle. It's funny how I have no issues with John discussing and getting the right setup. I too have had issues with Hypergear in the past supplying the wrong banjo's (would have been OK for a local job but this job was 300km's away), clocking, resend back to them at my cost due to wastegate problems, long turn arounds and communication.

Precision do 3 types of turbo's:

  • SS1 - $1,250
  • SS2 - $1,250
  • GT30/71r BB internals(the same Turbo Fishing Freak ran 12.2's with in RWD only) - $1,650

IMO the best setup for everyday use was the one I recently put in for Alex(Scott's old one) but that is pricey. If I was to do it all again I would still got with the GT30/71r BB even though the pricing is a little high.....imo its the best of all worlds.

anyway....thats my 2c's worth.

Edited by Jetwreck

Does the 3071 bb go in the oem housings or native with an adaptor?

Goes in the original housings. You do need to modify the outlet to the intercooler though as it will need to be 18-20mm longer. If you are doing a custom intake you will need to take the movement into account as well. It's all pretty easy work.

PS. Motorsport connections has the oil feed lines in stock for either a bush or BB setup. Under the name GARDEED....there about $200. They have an inline filter as well.

actually....if you go BB let me know....I have 2 brand new lines...I'll give you a discount....you will just need to order an inline filter.

Edited by Jetwreck

I'm not overly keen on going with the OEM housings again. I'm am positive the BB 3071 would be much better but still a compromise to a degree.

My boost response with the SS2 Hypergear rev4 is as follows:

1st 2nd 3rd

2000 -.2

3000 1.6 3.7 5.4

4000 5.3 6.8 11

4700 9.7 10.3 19.5

5000 10.3 13.8 19.8

6000 13.7 14.2 19.8

As you can see to get any decent power you have to be travelling at impractible speeds. The stock turbo would be faster in 1st and probably 2nd as well. Average power(low down torque) and transient response are incredibly important to our heavy auto's.

The only turbo that I know will retain these characteristics is the titanium turbined Borg Warner EFR. Either 6258 or 6578 would be my pick.

I'm using one of Johns Precision Turbochargers SS2 profile; recommended by Craig over 3 years ago.

I cannot speak highly enough of John, and the quality of his workmanship. He invited me to his workshop, and was more than happy to explain the theory behind what he builds, and it performed exactly as he said it would.

The guy does excellent work, and shared my excitement when the car pulled a good time at the drags.

This was in stark contrast to the other turbo builders who just wanted me to stop asking questions and start throwing money at them.

Supercharger would fix these low down boost issues :P

It's all about matching the stall converter and turbo, I have no idea where Tao got the idea we all want 300kw on petrol. 250 would be a more realistic figure without going to a 3k stally.

We want a turbo that produces the most amount of average torque between 2500-6500rpm. I'm thinking small turbo high boost or less rotational mass ie: ceramic turbine, Gamma Ti Turbine, Ti alloy.

EVO 9 RS turbocharger CHRA into OEM housings ?

TDO5HRA-16G6C-10.5T (ti alloy turbine, magnesium alloy compressor) Possibly replace the comp wheel for high boost.

I made 272awkw on E85 on my Tommei Mak EVO, response was silly

Pitty these turbo's spin the opposite way....

maybe a titanium compressor wheel that enables 50 plus degree backswept angles. This gives bigger flow for less rotational mass.

www.google.com/patents/US20060067829

Matt

Edited by BoostdR

Scottys old setup with the garret and external gate and 3k stally is the perfect setup

But cost wise is up there cause all custom made

I've been through 4 setups so far

Ss1

Ss2

Gt3071 standard housing

Gtx3071r garret

The torque and response this thing has is bloody awesome sitting at about 330kw with more to improve in the future

  • Like 1

30kw gain with a lag penalty. The torque was through the roof though.

I have since realised the torque gains with the external gate and larger housings is worth more than any dyno can show. At least my gearbox is happy now.

(Edit, remember the GT3071 is a cropped rear wheel compared to the 60mm GTX turbine.)

Once these wagons are on boost the torque curve is incredibly flat, much better than the RB25. Makes for an enjoyable wave of acceleration. I found -4 degrees timing at 6500 rpm helps my trans shift. All other high load cells have +5 degrees on E85, light load/cruise has +8.5

I've also had great success with the EMU auto tune and my innovate LC-2 wideband. Tune is within .2 AFR with no input from me apart from a drive through the hills.

Once I work out how to get a speed input from somewhere I'll also setup launch control..

Do you have a boost curve available scotty? would be good to see. I agree, dyno doesn't show the big picture at all. A boost curve at part throttle would highlight transient response and separate the boys from the men.

[quote name="Boostdr

Once I work out how to get a speed input from somewhere I'll also setup launch control..

There is a speed sensor in the back of yhe dvd rom

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...