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I WILL be going single........ Have the 4094r sitting there.

In two minds whether to keep it on the twins for the minute and get the bloody thing running and mapped then after a while convert to single OR..
Just bite the bullet, get a manifold and get it installed prior to mapping.

There's merit in both but TBH, I'm just itching to get the thing running at the minute so erring towards keeping the twins for the minute and changing later. The cost of subsequent remapping isn't an issue so for the sake of quickness, I think that's the best option..

Mind you, I've also been having thoughts of building up a forged RB30 bottom end so who knows WHAT direction things may go :chuckle:


TT

What twins are on it at the moment mate? Have you sorted ecu or you still got to purchase one?
 

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Discussion Starter #582
It's running std twins at present. I have still to purchase ECU but will be placing an order most probably this time next month. Very excited!!

Just need to buy a couple of things for PDM install (CAN keypad and Motes UTC adapter) then concentrate on ECU.


TT
 

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Discussion Starter #583
So, some of you may have read my post in the 'For Sale' section and will know that I have made the decision to fit my GT4094r single turbo now rather than later. I have been thinking about this for a while and, having sat down and weighed up the pro's and con's, have decided to take the plunge.
I will be placing an order for a Full-Race T4 manifold with twin 44mm wastegate flanges. I will also be ordering a pair of Turbosmart Hypergate 45mm wastegates. Once the turbo is mounted on manifold I will probably trailer the car up to Janspeed to have them make me a custom downpipe to connect to my Tomei Ti decat.

I am still toying with the idea of having the turbo converted to billet compressor wheel but will mull that over for a bit. The turbo has been modified to take a shaft speed sensor and I will have one installed prior to fitting.


So, a bold decision on my part. Looking forward to having a GT4094 equipped GTR in the near future :D


TT
 

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Out of interest what are your plans with the turbo speed sensor? Pure data logging or will that feed into the management system?
 

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Discussion Starter #585
Out of interest what are your plans with the turbo speed sensor? Pure data logging or will that feed into the management system?
Will be fed into EMS so it can 'see' shaft speed. Will more than likely set a max RPM limit on the turbo as an added protection.


TT
 

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Discussion Starter #590 (Edited)
So essentially you limit boost to keep the turbo speed down?
Why is turbo speed an issue?
The turbo will have a max design RPM. Who know's, I may never get anywhere near it but without first knowing how fast it's spinning, I'll never know if it's a problem.

Besides, if nothing else, It'll be a cool parameter to log and a good figure to boast about down the pub :chuckle:. Unfortunately I'm not the boasting type and hardly set foot in the pub so might have to find another use for 'turbo shaft speed'......



LOL



TT
 

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The compressor map is your target. If you keep in that then you'll not over speed.
Owen developments re-balanced my old T51r. Their are pump machine for spinning the turbo could only muster 20,000 rpm. I think it ran at about 50,000 rpm tops using their calculations.
 

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Discussion Starter #592
That's good to know...

The previous owner had the turbo modified to take a shaft speed sensor so rather than plug it up, I may as well make use of it. My intention is to log as many parameters on the car as possible for analysis purposes, fault finding and future improvement so this was always going to be within scope.


TT
 

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I run my borg Warner shaft speed sensor into my syvecs s6 its a brilliant feature I didn't need no signal convertor or anything the syvecs could read the raw signal. In A case the s6 sees the turbo spinning to high it will lower boost pressures to protect the turbo, whereas the s8 can actually run the shaft speed as a trip. A very quick easy job to wire into syvecs I would reccomend to anyone, I went for a billet wheel on my 4094 and it was a choice i regreted. The 4094 has more compressor wheel than turbine wheel beeing a gt4294 comp wheel fitted to a 4088 turbine wheel. If the billet wheel isn't significantly lighter it will be a waste of money imo Due to having more comp wheel to turbine wheel.

I wouldn't defiantly do a befor and after test so you no if it's actually made any diffrence.

Dan
 

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Discussion Starter #594
I run my borg Warner shaft speed sensor into my syvecs s6 its a brilliant feature I didn't need no signal convertor or anything the syvecs could read the raw signal. In A case the s6 sees the turbo spinning to high it will lower boost pressures to protect the turbo, whereas the s8 can actually run the shaft speed as a trip. A very quick easy job to wire into syvecs I would reccomend to anyone, I went for a billet wheel on my 4094 and it was a choice i regreted. The 4094 has more compressor wheel than turbine wheel beeing a gt4294 comp wheel fitted to a 4088 turbine wheel. If the billet wheel isn't significantly lighter it will be a waste of money imo Due to having more comp wheel to turbine wheel.

I wouldn't defiantly do a befor and after test so you no if it's actually made any diffrence.

Dan

Thanks for the info there Dan. Interesting what you say about the billet wheel!! I think I'll run the turbo as-is and see how I get on with it before doing anything drastic!


TT
 

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Discussion Starter #597
So, got stuck in this afternoon and ended up looking at this......



Made me feel very excited about things to come!!

Took delivery of my DEI exhaust wrap (2"x50ft) and DEI silicone spray...



WAS going to wrap my twin downpipe but since events have transpired, I'll keep it for my forthcoming single downpipe :).


Will be looking to order my manifold and wastegates very soon to get the ball rolling......



TT
 

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Discussion Starter #599 (Edited)
What fannymould/ downpipe combo are you using?
Have decided on a Full Race manifold with twin 44mm wastegate fittings and black 2000deg coating.....



With coating..


Yummy.....

Will be using 2 Turbosmart Hypergate 45mm w/gates. Am in contact with a couple of exhaust fabricators so will have to wait and see re downpipe..


TT
 

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Discussion Starter #600
And so it begins......


2 x Hypergate 45's ordered this very morning!!

V excited!!.


Also on this/next months list are:-
1 x Full Race T4 manifold
1 x 15 Button Motec CAN keypad
1 x Motec UTC adapter
1 x Syvecs S8 ECU
1 x Syvecs GPS / G-sensor


Happy days...


TT
 
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