Author Topic: Dyno'd the Caddy, need help fine tuning  (Read 5088 times)

June 01, 2014, 11:07:01 pm

chiefdiesel

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Dyno'd the Caddy, need help fine tuning
« on: June 01, 2014, 11:07:01 pm »
The Caddy was on the rollers a few weeks ago and posted a high of 203.1 hp of 3 runs. The shop (Allspeed of Peachtree City Ga) didn't have an adapter to read the revs for a chart of the torque. Here are the details according to my Auto Meter gauges: 203.1 hp @ 4000rpm (custom fuel cutoff), boost reached 45 psi, and egt approx. 2000 degrees. The block is stock AFN, 1Z head (8K miles), Garrett GT 2056 wastegated turbo (rebuilt with upgraded journal and thrust bearing), R520 w/custom pressure injectors, LT 12mm ip (Giles super pump mod set to 80% flow), fmic and 2" dp and straight pipe. Should I add w/m setup or custom intake and exhaust manifolds, and larger intercooler?
 


2 B4 Passats Ecodes/HID/pp764/rc2
'85 Jetta coupe 1.6 n/a
'80 Caddy 110 (afn) m-tdi/12mm Lt 2.8 ip/.216/fmic

Reply #1June 01, 2014, 11:45:55 pm

chiefdiesel

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #1 on: June 01, 2014, 11:45:55 pm »
Also, what about a ALH head....supposedly better flow than a ported 1Z/AHU head?

2 B4 Passats Ecodes/HID/pp764/rc2
'85 Jetta coupe 1.6 n/a
'80 Caddy 110 (afn) m-tdi/12mm Lt 2.8 ip/.216/fmic

Reply #2June 02, 2014, 12:06:09 am

GEE-BEE

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #2 on: June 02, 2014, 12:06:09 am »
Didnt know it would fit the ahu ?

How do you like the M-TDI 12 mm pump

I ordered a new one as I did want to round up cores for Giles to build
1.9 AAZ, CHD 5spd with Peloquin
KO4/KO3 Hybrid turbo
Giles Pump OHC
Complete Techtonics 2'5 S/S DP and Exhaust
Coilovers, MKII Pedal Swap,G60 BRAKES
MK1 JETTA DASH
675MM 16V radiator (MKII) PASSAT DUAL FAN
42K original miles , South African Front End
15x6 Le Casletts 195-45-15

Reply #3June 02, 2014, 12:12:16 am

chiefdiesel

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #3 on: June 02, 2014, 12:12:16 am »
AWESOME! Especially after Giles worked his "majic"! Im desperately trying to post a few vids of the runs. This pump is capable of supplying huge amounts of fuel. A few mods need to be done for the head to fit.
2 B4 Passats Ecodes/HID/pp764/rc2
'85 Jetta coupe 1.6 n/a
'80 Caddy 110 (afn) m-tdi/12mm Lt 2.8 ip/.216/fmic

Reply #4June 02, 2014, 12:30:52 am

chiefdiesel

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #4 on: June 02, 2014, 12:30:52 am »
2 B4 Passats Ecodes/HID/pp764/rc2
'85 Jetta coupe 1.6 n/a
'80 Caddy 110 (afn) m-tdi/12mm Lt 2.8 ip/.216/fmic

Reply #5June 02, 2014, 12:40:52 am

GEE-BEE

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #5 on: June 02, 2014, 12:40:52 am »
Better results with less alloy tubing getting heat soaked

dual fan also, larger radiator

What wheels are those, I trimmed 1.75 off each side of my rear axle for no more rubbing problems when lowered..

GB

let me know if I can make you anything custom

Here is my list of aircraft stuff
http://www.csobeech.com/GeeBee.html
1.9 AAZ, CHD 5spd with Peloquin
KO4/KO3 Hybrid turbo
Giles Pump OHC
Complete Techtonics 2'5 S/S DP and Exhaust
Coilovers, MKII Pedal Swap,G60 BRAKES
MK1 JETTA DASH
675MM 16V radiator (MKII) PASSAT DUAL FAN
42K original miles , South African Front End
15x6 Le Casletts 195-45-15

Reply #6June 02, 2014, 02:10:29 am

Rising

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« Reply #6 on: June 02, 2014, 02:10:29 am »
2000 EGT? :-[ :o

Great numbers! I just didn't know aluminum could deal with that!

Sent from my Nexus 5 using Tapatalk

'84 Rabbit Diesel- 1.6D Stock

Reply #7June 02, 2014, 08:00:37 am

RabbitJockey

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #7 on: June 02, 2014, 08:00:37 am »
why the fuel cut off?  why so much boost?  whats up with your egts  :o :o :o :o  could probably make the same power with less egt at a lower boost level, like 30psi
98 Pontiac Grand Prix GT:stock daily
 81 Jetta: in progress 1.6td, ported head, holset turbo.
81 Rabbit:AAZ, hybrid T3 turbo, Giles pump, lightened fw, and yellow clutchnet clutch.

Reply #8June 02, 2014, 08:39:50 am

theman53

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #8 on: June 02, 2014, 08:39:50 am »
with that much EGT I would invest in a Holset. You could run 1/2 the boost and have lower EGT. Good numbers. The other thing I would do to lower the EGT is go to 2.5" exhaust all the way. Water meth would help, but to get this to live I think you need some better hard parts. Then you could see what is needed or if you want to go custom on the exhaust and intake. The only numbers I could get for this turbo was like 16lbs/min and this from another site : http://306oc.co.uk/forum/archive/index.php?thread-11198.html
Garrett GT2056S CHRA number 714652 (ext 5005, 5006)
Model: 751578-2
 CHRA: 433289-234

 Bearing: Journal
 Cooling: Oil
 Compressor
 Inducer: 41.5 mm
 Exducer: 56.0 mm
 Trim: 55
 A/R 0.53

 Turbine
 Wheel: 47.0 mm
 Trim: 72
 A/R: 0.46
 Wastegated

 Realistically on a 9mm pumped 1.9 XUD you're looking at reliably up to 170bhp at 26psi.

 Consider this option if you want fast spool combined with respectable power, without the added issue of controlling VNT's. Suited to less-gov shimmed engines than a TD04 as the power band is much lower, wouldn't recommend revving to 6krpm.

 Currently running 24psi on the estate, 20psi by 2250rpm, peak boost at 2750rpm. Cruising speeds 4psi at 60mph, 7psi at 70mph.

DO NOT overspeed or dewastegate these as they have a habit of snapping shafts, my last one went at about 34psi. Keep it sensible, it's more fragile than the seemingly bombproof T25 and TD04, however spools FAR quicker.

The holset 200wg, which is from what I gather what used to be the he211w, would be a much better option. If you have instant boost along with your EGT condition, then that turbo is a restriction at max rpm.

Reply #9June 02, 2014, 11:12:01 am

RabbitJockey

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #9 on: June 02, 2014, 11:12:01 am »
gt2056 is a good turbo and flows 27lbs min, but at 45 psi it is highly ineffecient which probably has a lot to do with the super high egt's

what intake manifold do you currently have?
98 Pontiac Grand Prix GT:stock daily
 81 Jetta: in progress 1.6td, ported head, holset turbo.
81 Rabbit:AAZ, hybrid T3 turbo, Giles pump, lightened fw, and yellow clutchnet clutch.

Reply #10June 02, 2014, 04:48:54 pm

theman53

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #10 on: June 02, 2014, 04:48:54 pm »
gt2056 is a good turbo and flows 27lbs min, but at 45 psi it is highly ineffecient which probably has a lot to do with the super high egt's

what intake manifold do you currently have?
I figured the number of 16lbs/min I had were off as the T3 would do that much, but I couldn't find much of anything on them. Even at 27lb/min the littler holset flows 32lbs/min IIRC and would still be efficient at his boost levels.
But as I said, if you want it to last you probably should change some hard parts. No need for a custom exhaust manifold if you cant get it out of the 2" exhaust. I also am curious about what intake you are running.

Reply #11June 02, 2014, 08:42:16 pm

chiefdiesel

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #11 on: June 02, 2014, 08:42:16 pm »
Thanks for in input everyone. This is a "mock" setup. The intake is made by Spearco, an aluminum part from an aftermarket turbo kit for the NA 1.6 diesel. The exhaust manifold is very similar to the stock cast gasser type made to accept the turbo. The exhaust is crimp bend restrictive. My goal is to upgrade the components around the pump. I will not push the engine to the limits.
2 B4 Passats Ecodes/HID/pp764/rc2
'85 Jetta coupe 1.6 n/a
'80 Caddy 110 (afn) m-tdi/12mm Lt 2.8 ip/.216/fmic

Reply #12June 02, 2014, 08:53:34 pm

chiefdiesel

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #12 on: June 02, 2014, 08:53:34 pm »
@ Rabbitjockey: I requested the cutoff @4k because there is little to gain after that. The boost valve has not been set also. Keep in mind that I'm in the test and tune stage. Also, it takes fuel to make boost!
2 B4 Passats Ecodes/HID/pp764/rc2
'85 Jetta coupe 1.6 n/a
'80 Caddy 110 (afn) m-tdi/12mm Lt 2.8 ip/.216/fmic

Reply #13June 02, 2014, 09:02:16 pm

theman53

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #13 on: June 02, 2014, 09:02:16 pm »
I just looked at your sig line and saw .216 nozzles on top of all the other stuff. If you want to make power you should get at least the .260 or .275 nozzles.

That much boost on a GT 2056 will look like this if you don't take it down...

Reply #14June 02, 2014, 09:07:46 pm

chiefdiesel

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Re: Dyno'd the Caddy, need help fine tuning
« Reply #14 on: June 02, 2014, 09:07:46 pm »
I need to update that sig. I have a set of R520
2 B4 Passats Ecodes/HID/pp764/rc2
'85 Jetta coupe 1.6 n/a
'80 Caddy 110 (afn) m-tdi/12mm Lt 2.8 ip/.216/fmic