So I thought I understood the whole compresser map thing but I ended up confusing myself.
1. Which RPM can I be at on the left side of the surge limit?
2. Is a TO4E map the same as a T3-TO4E?
3. What does the stage of the wheel mean?
4. Is a 54 trim T3-TO4E (.48/.60) too big for a eco? Or would a 60 trim T3 (.48/.60) better suite my goals of 200-225 whp.
5. Is there a formula to determine the rpm' when the turbo will make boost?
9 replies to the turbonator thread but no love for a real question?
tmnt328 wrote:So I thought I understood the whole compresser map thing but I ended up confusing myself.
1. Which RPM can I be at on the left side of the surge limit?
2. Is a TO4E map the same as a T3-TO4E?
3. What does the stage of the wheel mean?
4. Is a 54 trim T3-TO4E (.48/.60) too big for a eco? Or would a 60 trim T3 (.48/.60) better suite my goals of 200-225 whp.
5. Is there a formula to determine the rpm' when the turbo will make boost?
1. not sure. surge limits are graphed in pressure ratio / cfm
2. no
3. i believe it has to do with the weight of the fins. but i believe shifter can enlighten me on this a little more.
4. the 60 trim T3 would be your best choice.
5. i'm sure there is somehow. it's all about cfm, boost, and turbine size. if you are running about 225 whp out of that eco pushing around 8 to 10 psi, you are going to start spooling a 60 trim t3 at around 1900 to 2200 rpm's and reach full boost at around 3500 or so.
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Spotabee Racing wrote:tmnt328 wrote:So I thought I understood the whole compresser map thing but I ended up confusing myself.
1. Which RPM can I be at on the left side of the surge limit?
2. Is a TO4E map the same as a T3-TO4E?
3. What does the stage of the wheel mean?
4. Is a 54 trim T3-TO4E (.48/.60) too big for a eco? Or would a 60 trim T3 (.48/.60) better suite my goals of 200-225 whp.
5. Is there a formula to determine the rpm' when the turbo will make boost?
1. not sure. surge limits are graphed in pressure ratio / cfm
2. no
3. i believe it has to do with the weight of the fins. but i believe shifter can enlighten me on this a little more.
4. the 60 trim T3 would be your best choice.
5. i'm sure there is somehow. it's all about cfm, boost, and turbine size. if you are running about 225 whp out of that eco pushing around 8 to 10 psi, you are going to start spooling a 60 trim t3 at around 1900 to 2200 rpm's and reach full boost at around 3500 or so.
2.
YES. A compressor map for a 54 trim T3/TO4E will be the same as a compressor map for a TO4E with a T4 turbine since they both have the exact same compressor.
For 225whp a T3 Super 60 with a .48 a/r turbine is pretty much the perfect turbo for you.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
I thought they would be the same also.
Ive been lookin for a t3 super 60 but cant find one for a decent price from a reputable company. I can only find regular t3 60s and the hybrid t3's.
tmnt328 wrote:I thought they would be the same also.
Ive been lookin for a t3 super 60 but cant find one for a decent price from a reputable company. I can only find regular t3 60s and the hybrid t3's.
Turbonetics.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
You mentioned vecco the other day... but you didnt look at the turbo page.
Please stay tuned... These pages will be filled with HUGE amounts of Horse Power in weeks to come.
Is this the turbonetics website
http://64.225.76.178/main.htm Looks like a pretty half assed website.
turbonetics is great, however i've always been a garrett guy. always liked garrett turbos. i've gone through Precision Turbo before, they are a Garrett dealer. Great guys.
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TheFlyingSquirrel (PJ) wrote:you might find my post from a month ago or so quite handy...
Turbo matching EXPLAINED IN EASY DETAIL
yes. best boost post evar.
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I used that post to come up with this a while ago. But if I keep going to about 1500 rpms I will be over the sure limit. Thats why I was wondering which rpm's you should be at, at the surge limit. Do I make any sence?
tmnt328 wrote:But if I keep going to about 1500 rpms I will be over the sure limit.
you won't be building boost that early. no worries
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yes the surge line is a worry only if your engine is in upper RPMs
if I ran my calculations down to 1000rpm I'd be over the surge line too. But you won't be boosting that low at all.
This is just an efficiency calculation. This can't really predict turbo lag or overall horsepower, although its a very good indication of such.
Basically all its helping you determine is the required input of your engine at a particular boost level. The compressor map is the turbos output characteristics. When they get relatively close, the turbo will be very happy boosting your engine.
The more your plots fall over the higher efficiency islands on the compressor map, the better suited it will be for your engine at that given boost level. Like I said before, it can't predict turbo lag to a t, but the more you're in the efficiency range, the better off you'll be.
dont worry about the surge line unless your near 3000rpm on your engine and still way across it.
