Locked n the garage again... now look what happened

[JusMX141]

It's definetly a Garrett....it's not visible in the pics, but there's an AiResearch "A" logo at the base of one of the fins.

I got it with a whole bunch of other random turbo parts on a buyout long ago and never thought I'd have a use for it. Most of the other parts got scrapped, but this wheel was in such nice shape I had to put it to good use!

 

[RayPeters]

If you're willing, would you give me the inducer/exducer dimensions and the wheel height? I'm curious now what has 7 blades on it.

 

[JusMX141]

If you had caught me earlier last week, that would've definetly been possible. It's already in the possession of my customer. I'm anxious and very curious to see how this works out, I'll keep you posted with photos of the turbo installed and posts on how it performs.

 

[tkelly27]

Think this would work with a to4b v-trim wheel?

Did you you machine the cover by hand? How did you know how big to make it?

Also, would porting out the compressor outlet (or even deeper?) help this mod flow better?

 

[JusMX141]

Luckily I know the owner of a local machine shop near my house, so the machining of the compressor cover and CHRA were left in their hands.

There was way too much material to remove, you could never do it by hand....and if you did, it wouldn't be a pretty job.

 

[RayPeters]

I machined the CHRA, compressor housing and wheel on a lathe, and finished the housing into profile with a scraper and sandpaper. I now have a tool for the profile I need in the housing, but each trim wheel is different so if you want a different trim wheel I'll have to do it the slow way.

I'm not convinced there is a huge advantage to porting the compressor housing outlet, but I have yet to do much testing. Let me get some baseline numbers with what I have, then I'll try some tricks.

Ray

 

[RayPeters]

Ok, for those interested in the effectivness of a water to air intercooer here's some hard numbers to work from.

Boost pressure : 20psi
Flow: 29.5 lbs/min @5500 rpm
Temp at the Throttle Body : 122 deg f
Temp after the turbo 320 deg f
Temp of the water : 98.4 deg f
Legnth of pull: 4th gear 2500 up

Calculated intercooler effiency: 87%

Calculated HP from Logs : 295

Bear in mind the HP number will go up subatantially if I were revving the engine to its expected 7800 rpm redline. Which at the same 20 psi should make 410 HP. Attached is a photo of the logging equipment.

More numbers as I have time to log them.

Ray

 

[brute]

Nice shift knob

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[dsm-onster]

Ray, great stuff. Take a look at the "new" tdo6sl2 turbine wheel when you decide to upgrade. Looks to be a good turbine for the 57trim's flow potential in a 7cm^2 turbine housing which you already have.

You could have gotten more out of your 18g w/ a turbine upgrade too . . . Were you running that tdo5h turbine unclipped?

 

[gixrman]

The three small yellow box's, are those your temp, logging guages? If so were did you get them?

 

[RayPeters]

The Temp loggers are from Fry's electronics. Just get a stick thermometer with the desired tempature range, cut the stainless tube 1/2" below the display end with a tubing cutter. Then extend the leads so you can reach the interesting locations on the car (10 - 12 feet seems to be plenty) and heat shring all your work. If there is some interest I will post photos of each step when I add my 4th sensor to show air filter intake temps.

Most of these temp devices have a min/max/hold feature and make it easy to record the max values during a test.

Ray

 

[99gst_racer]

Ok, for those interested in the effectivness of a water to air intercooer here's some hard numbers to work from.

Boost pressure : 20psi
Flow: 29.5 lbs/min @5500 rpm
Temp at the Throttle Body : 122 deg f
Temp after the turbo 320 deg f
Temp of the water : 98.4 deg f
Legnth of pull: 4th gear 2500 up

Calculated intercooler effiency: 87%

Calculated HP from Logs : 295

Bear in mind the HP number will go up subatantially if I were revving the engine to its expected 7800 rpm redline. Which at the same 20 psi should make 410 HP. Attached is a photo of the logging equipment.

More numbers as I have time to log them.

Ray

What was the ambient temperature during this testing?

 

[RayPeters]

Whoops, sorry for the omission, ambient air temp was 92 degrees. Humidity: what humidity, this is arizona.

 

[gixrman]

The Temp loggers are from Fry's electronics. Just get a stick thermometer with the desired tempature range, cut the stainless tube 1/2" below the display end with a tubing cutter. Then extend the leads so you can reach the interesting locations on the car (10 - 12 feet seems to be plenty) and heat shring all your work. If there is some interest I will post photos of each step when I add my 4th sensor to show air filter intake temps.

Most of these temp devices have a min/max/hold feature and make it easy to record the max values during a test.

Ray

Thanks for the reply. Yea i'm intersested in the steps. I'm a crackhead when it comes to wanting engine data.

 

[aero_sallee]

The Temp loggers are from Fry's electronics. Just get a stick thermometer with the desired tempature range, cut the stainless tube 1/2" below the display end with a tubing cutter. Then extend the leads so you can reach the interesting locations on the car (10 - 12 feet seems to be plenty) and heat shring all your work. If there is some interest I will post photos of each step when I add my 4th sensor to show air filter intake temps.

Most of these temp devices have a min/max/hold feature and make it easy to record the max values during a test.

Ray

Sorry for the slightly OT.


http://cgi.ebay.com/DIGITAL-THERMOM...ryZ50974QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
I found these a while back, very reasonably priced, compatible with many different temp probes. Has programmable output for alarm, set it to go on at 1500 and not go off till you cool off to 1450 for example. My dad got one and I've played with it a bit, works pretty well. Only negative is the lack of a peak hold. I'm thinking about getting two or 3 of them to use for egt, pre and post IC. Easily stackable and visible at night.

 

[RayPeters]

Sorry for the slightly OT.


http://cgi.ebay.com/DIGITAL-THERMOM...ryZ50974QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
I found these a while back, very reasonably priced, compatible with many different temp probes. Has programmable output for alarm, set it to go on at 1500 and not go off till you cool off to 1450 for example. My dad got one and I've played with it a bit, works pretty well. Only negative is the lack of a peak hold. I'm thinking about getting two or 3 of them to use for egt, pre and post IC. Easily stackable and visible at night.

That's nice, a viable alternative to expensive EGT gauges that are hard to read with any decent accuracy. I don't think I want to try to include 5 of them in my interior right now, but I like them. I'm going to look into building a better mousetrap soon. (Working for a electronics design shop helps) I'm looking to build a multi input device with 4 inputs. EGT, IAT @ filter, IAT after turbo, IAT after intercooler. Then package the whole thing in 1 52mm gauge pod and have a peak hold and audible alarm using a 2 button input system. No idea on price yet, but that's the dream. The temp inputs would all be displayed with an abbility to switch the primary to a larger display than the other 3. All in due time.

 

[tkelly27]

Ok, for those interested in the effectivness of a water to air intercooer here's some hard numbers to work from.

Boost pressure : 20psi
Flow: 29.5 lbs/min @5500 rpm
Temp at the Throttle Body : 122 deg f
Temp after the turbo 320 deg f
Temp of the water : 98.4 deg f
Legnth of pull: 4th gear 2500 up

Calculated intercooler effiency: 87%

Calculated HP from Logs : 295

Bear in mind the HP number will go up subatantially if I were revving the engine to its expected 7800 rpm redline. Which at the same 20 psi should make 410 HP. Attached is a photo of the logging equipment.

More numbers as I have time to log them.

Ray

That's great! That's even with the water at ambient temps. You didn't happen to get a pre-post IC boost reading did you? The big draw for A/W IC's for me is the low flow restriction.

 

[RayPeters]

As it is installed in the car, at 45lbs /min I see .25 psi drop. I think the outlet in the middle isn't the best, but from a packaging standpoint I can't beat it. Speaking of beating on it, I ran zero car (first car on stage) at the Prescott rally with this setup @ 20 psi all weekend with zero problems, no knock, consistent intake temps in the 115-120 range while running 80+% of racing speeds on some of the finest gravel roads in AZ.

Ray

 

[selmerguy]

Numbers??? What happened to this thread. It had so much promise.