Looking for budget turbo speed sensor set up

[chargedvx6]

Just looking for a decent Turbo speed sensor set up and keep coming back to the Garret unit. I'm more after something with logging as it will be used on a track car and may be a little hard to note accurately where speeds and rpm are intervening.

Any suggestions based on experience would be appreciated. I'm open to diy but am unsure what type of sensor it needs. Pretty sure I'm not about to set up a reluctor wheel on my turbo comp wheel! lol

Turbo I run is based on a Borg Warner S366 if that helps

[duke5700]

What do you want wheel speed for? I don't mean that in a derogatory way either. I'm involved with a few turbo track cars and none of them have it. I'm scratching my head as to what you want out of it.

[chargedvx6]

What do you want wheel speed for? I don't mean that in a derogatory way either. I'm involved with a few turbo track cars and none of them have it. I'm scratching my head as to what you want out of it.

Fair question and not taken wrong

The turbo I chose is for a circuit race/ fun car and I'm building the engine to take high boost. This turbo comes in on Borg Warner Match bot as being best at around 24-30psi and flowing 45lb/min but it's a Bullseye Power unit and their comp maps are scarce for the billet wheel units. Of course cam choice, comp ratio etc etc will alter that and it's a custom grind so there's not really any bench mark.

I paid too much for the turbs and I'd like to max the it out as far as efficiency and output goes so there's a chance the wheel may overspeed. Slim chance yes, but possible.

It's only a fun car but would like to get the best from it

[8throttlebodies]

Quick search and I came across this...
http://www.full-race.com/store/turbos/borgwarner-efr/borgwarner-efr-speed-sensor-kit.html
$160 ish and some DIY.

HTH
8tb

[chargedvx6]

Quick search and I came across this...
http://www.full-race.com/store/turbos/borgwarner-efr/borgwarner-efr-speed-sensor-kit.html
$160 ish and some DIY.

HTH
8tb

Thanks for that IJ ;)

I've seen that before but am a bit green in the area of outputting it to something that can log. I've got a feeling that what I'm after may need to be constructed and most likely will use the sensor you linked.

I run the standard Delco ecu on my car and there's no fancy CAN BUS like alot of aftermarket ecus have that could possibly configure an output to a gauge

Unfortunately my aftermarket Bullseye comp cover doesn't have the boss that the EFR BW turbos have to suit this kit but can easily be sorted out I guess.

[chargedvx6]

Ok, followed up on the BW speed sensor install vid and appears is missed crucial info at the very end doh!

Full race offer a good range of digital gauges it seems with all the features after

Some read/ log/ peak n low warm just single parameters while others have more parameters

I've ordered this. Turbo speed, boost and pyro which I already welded to my manifolds

http://www.full-race.com/store/electronics/gauges/road-rage-gages-sbt-kit-speed-boost-temp-1.html

[duke5700]

45lb/min sounds like it is smaller than a GT35r? What size compressor wheel is in it?

What size is the engine?

I have a vague recollection it was a V6 from another thread. I would be suprised if you will even get to 20 psi before the turbo falls over to be honest if it is 45lb/min.


Fair question and not taken wrong

The turbo I chose is for a circuit race/ fun car and I'm building the engine to take high boost. This turbo comes in on Borg Warner Match bot as being best at around 24-30psi and flowing 45lb/min but it's a Bullseye Power unit and their comp maps are scarce for the billet wheel units. Of course cam choice, comp ratio etc etc will alter that and it's a custom grind so there's not really any bench mark.

I paid too much for the turbs and I'd like to max the it out as far as efficiency and output goes so there's a chance the wheel may overspeed. Slim chance yes, but possible.

It's only a fun car but would like to get the best from it

[chargedvx6]

45lb/min sounds like it is smaller than a GT35r? What size compressor wheel is in it?

What size is the engine?

I have a vague recollection it was a V6 from another thread. I would be suprised if you will even get to 20 psi before the turbo falls over to be honest if it is 45lb/min.

Yes that's right, a standard capacity 3.8L L67 V6 from a junk VT...........shame on an LS1 forum I know but I think it will go ok :) Really hope it doesn't run out or fall over as it was a bit of an investment :(

Well we've calculated pressure ratio and whatnot prior to buying the turbo but the Bullseye power batmowheel comp maps are scarce.........especially for my particular turbs cos it isn't a TCT 80mm something or other with massive wank factor lol!

The turbo is essentially a Borg warner S366 with twin scroll 0.91a/r turbine and 62mm batmowheel. It's all about response.

I'll post a few maps here that are all apparently relevant in one way or another to my hybrid turbo that has some fancy custom comp cover on it but they're not conclusive if you ask me

This map is for a BEP (Bullseye Power) S362

http://i173.photobucket.com/albums/w53/Chargedvx6/Car%20pics/Track%20car/s362MAP_zpsf989a998.jpg (http://s173.photobucket.com/user/Chargedvx6/media/Car%20pics/Track%20car/s362MAP_zpsf989a998.jpg.html)

BEP S366

http://i173.photobucket.com/albums/w53/Chargedvx6/Car%20pics/Track%20car/s366_comp_map_zpsd8a21b4a.jpg (http://s173.photobucket.com/user/Chargedvx6/media/Car%20pics/Track%20car/s366_comp_map_zpsd8a21b4a.jpg.html)

This one's from the Borg Warner site for an S366 with a cast comp wheel. All look like quite different turbos and tbh I don't trust any of them which is why I think wheel speed will be a good reference if boost is where it should be or if the turbo is, as you suggested possible running out of puff

http://i173.photobucket.com/albums/w53/Chargedvx6/Car%20pics/Track%20car/s300-66-compressor-map_zpsdc203c71.jpg (http://s173.photobucket.com/user/Chargedvx6/media/Car%20pics/Track%20car/s300-66-compressor-map_zpsdc203c71.jpg.html)

From our calculations a pressure ratio of 3 with 6400rpm as a goal in mind should yield around 24psi (depending on real head/ cam flow) with potential to move around 45-60lb/min of intake airflow, maybe more if I've nailed the heads n cam.

Pressure ratio of 2.2 would yield just over 14psi and 33-45lb/min of air flow.


http://i173.photobucket.com/albums/w53/Chargedvx6/Untitled_zps16560ec5.png (http://s173.photobucket.com/user/Chargedvx6/media/Untitled_zps16560ec5.png.html)

http://i173.photobucket.com/albums/w53/Chargedvx6/2Untitled_zpsa01afb6f.png (http://s173.photobucket.com/user/Chargedvx6/media/2Untitled_zpsa01afb6f.png.html)

[duke5700]

That makes more sense. 45lb/min is T25/T28 sort of territory.. small and girly.

Without getting right into it and doing the maths for you, I would hazard a guess you are a bit off with those calcs, but on 15 psi, you will see give or take 260rwkw, roughly a 10rwkw gain per psi after that.

Those maps, whilst looking different are sort of close to each other anyway. You're going to be in the low 70's for most of the pull and might drop off into the high 60s at the top end.

Personally.. I wouldnt bother, the car will make plenty of stonk anyway and you will see if any the power(psi) fall off on the dyno and your IAT's rise as the turbo becomes inefficient. Unless you can log it against engine load/rpm/IAT etc you will never look at the gauge whilst you've got it pinned.

[chargedvx6]

That makes more sense. 45lb/min is T25/T28 sort of territory.. small and girly.

Without getting right into it and doing the maths for you, I would hazard a guess you are a bit off with those calcs, but on 15 psi, you will see give or take 260rwkw, roughly a 10rwkw gain per psi after that.

Those maps, whilst looking different are sort of close to each other anyway. You're going to be in the low 70's for most of the pull and might drop off into the high 60s at the top end.

Personally.. I wouldnt bother, the car will make plenty of stonk anyway and you will see if any the power(psi) fall off on the dyno and your IAT's rise as the turbo becomes inefficient. Unless you can log it against engine load/rpm/IAT etc you will never look at the gauge whilst you've got it pinned.

Yeah the maps are a bit inconclusive for sure. Possibility is there for up to 70lb/min by the looks of things. My set up is pretty correct as far as clever pipe size for optimum velocities and has a decent custom intake with tuned length runners for good mid range torque so will just need to suck it n see.

Car will be W2A as well. Because it's a journal bearing turbo it's not capable of the higher speeds of a ball bearing turbo and has a fat efficiency range achieved at lower rpm. It's all about flow but not about to miss the mark by guessing too.

Hopefully this full race set up is the goods and will feed back once it's all implemented in the car. I'll post vids to my thread anyways for a bit of fun

Thanks for the advice ;)