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Ecotec Supercharger


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#221 dude

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Posted 03 December 2003 - 10:49 AM

Ricky2772, on Dec 3 2003, 10:37 , said:

nono, my plan is to make de-compressed forged pistons (lower floor) and stronger, lighter rods, but that remain the same dimensions-wise.

I'd rather make forged rods than drill the dubious hole in the stock rods, that appear to be already the "weak" component on a charged engine....

edited to say I dunno how saab aero could fit, in Italy we only have a 2.3 turbo aero, that most likely have different bore and stroke...do you have a saab 2.2 turbo on swedish market?

saab has changed to a destroked crank and new rods and pistons.

did you get any technical specs (dur/lift/revrange) from mantasport about the sports/comp-cams.

//anders

#222 Ricky2772

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Posted 03 December 2003 - 10:58 AM

no. i did not considered cams along with the charger-kit... they told me to ship'em the stock piston + rod, and they will calculate the decrease from 10:1 to 8,75:1. can such evaluation be done w/out knowing the combustion chamber volume? :unsure:

Edited by Ricky2772, 03 December 2003 - 11:09 AM.


#223 dude

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Posted 03 December 2003 - 11:18 AM

Ricky2772, on Dec 3 2003, 10:58 , said:

no.
they told me to ship'em the stock piston + rod, and they will calculate the decrease from 10:1 to 8,75:1.
can such evaluation be done w/out knowing the combustion chamber volume? :unsure:

i thought that you had spoken with them about an n/a kit with cams/piston/rods.
and it was the specs for these camshafts i ment.

the sunfire ecotec is the same engine as our z22se. i can´t see why the need your parts to measure the combustionchanges for the pistons.

i´m going to keep my original rods and piston (after reading the finnish page), but change camshaft (if i get some specs on them from mantasport).

//anders

#224 clipping_point

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Posted 03 December 2003 - 11:51 AM

dude, on Dec 3 2003, 10:49 , said:

saab has changed to a destroked crank and new rods and pistons.


//anders

Anders!

Has the piston the same dia. as the Opel 2,2? Does it give any reduction of the compression ratio?

#225 Ricky2772

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Posted 03 December 2003 - 01:22 PM

same article, better pics....
http://www.year2032.com/ecotec.htm
:D

I found a US gasket company that offers different thicknesses hi-perf. copper gaskets.....probably way better choice than the "sandwich" of stock ones used in the delta kit....

http://www.scegasket...alog.html#table

page pdf 10 is were the ecotec gaskets are... B)
I inquired about the correct thickness for 8,75 ratio... :P

#226 dude

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Posted 03 December 2003 - 01:48 PM

it´s the same bore on 2.0 and 2.2. only stroke is different. //anders

#227 Ricky2772

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Posted 03 December 2003 - 02:10 PM

found those datas about the ecotec 2.0 supercharged.....sweet... B) ..is it available already?!?!? :lol: ....compression rate is 9,5:1 :rolleyes: 2004 Ecotec 2.0 Liter Supercharged Engine Preliminary Specifications Type: 2.0L inline 4-cylinder with supercharger Displacement: 1998 cc Compression ratio: 9.5:1 Valve configuration: dual overhead camshafts (4 valves per cylinder) Valve lifters: hydraulic roller finger follower Firing order: 1-3-4-2 Bore & stroke: 86 x 86 mm Bore ctr. to ctr.: 96 mm Supercharger: Eaton M62 helical roots compressor Intercooler: water to air Max. boost pressure: 12 psi Pulley ratio: 1.85:1 Oil cooling: oil cooled pistons and direct mount oil cooler Fuel type: gasoline (premium unleaded recommended) Fuel system: sequential fuel injection with high pressure (56 psi) Fuel shut off: 6500 rpm Intake manifold: high flow, low restriction with integrated intercooler system Throttle body: 68-mm electronic throttle control Ignition system: high energy coil-on-plug Horsepower: 200 hp @ 6200 (Estimate - final figures in fall 2003) Torque: (lb-ft): 200 lb-ft @ 4400 (Estimate - final figures in fall 2003) Spark plugs: platinum tip (1.5-mm gap ) Oil: 5W30 / 7 quarts with filter change Materials Block: aluminum lost foam casting Cylinder head: aluminum semi-permanent mold casting Intake manifold: aluminum Crankshaft: forged steel with induction hardened fillet Camshafts: cast iron Connecting Rods: forged steel Pistons: high strength aluminum Assembly site: Kaiserslautern, Germany

Edited by Ricky2772, 03 December 2003 - 02:11 PM.


#228 clipping_point

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Posted 03 December 2003 - 04:23 PM

Ricky2772, on Dec 3 2003, 10:58 , said:

........... calculate the decrease from 10:1 to 8,75:1.
can such evaluation be done w/out knowing the combustion chamber volume? :unsure:

If the bore is 86 mm and the stroke is 94,6 mm that means that the swept volume is 549,5 cc. If the compression ratio is 10:1 then the chamber volume is 61 cc since (549,5+61)/61 is 10:1 and if the compratio is 8,75 then the volume is 549,5/(8,75-1)=70,9 cc

#229 dude

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Posted 03 December 2003 - 04:35 PM

clipping_point, on Dec 3 2003, 16:23 , said:

Ricky2772, on Dec 3 2003, 10:58 , said:

........... calculate the decrease from 10:1 to 8,75:1.
can such evaluation be done w/out knowing the combustion chamber volume?  :unsure:

If the bore is 86 mm and the stroke is 94,6 mm that means that the swept volume is 549,5 cc. If the compression ratio is 10:1 then the chamber volume is 61 cc since (549,5+61)/61 is 10:1 and if the compratio is 8,75 then the volume is 549,5/(8,75-1)=70,9 cc

this calculation is based on a flat pistonroof, but you have to consider the negative dome and valvepockets on the piston to get the right shape.

#230 Ricky2772

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Posted 03 December 2003 - 06:47 PM

filling the cylinder concavity with a graduated syringe full of water would lead to the right amount of water needed? (in cc's? )

#231 clipping_point

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Posted 03 December 2003 - 06:59 PM

Yes, but you know (theoretically) that the chamber volume is 61 cc since (549,5+61)/61 is 10:1. Therefore that each increase of the head gasket thickness gives 5,8 cc since the cylinder square area is 8,6^2*3,1415=58,1 cm2. Approx 2mm then..

#232 Ricky2772

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Posted 03 December 2003 - 08:55 PM

so, the perf. copper gasket that is available in 0,080" (inches I guess?!?) would correspond to (0,080x2,54)= 2,03 mm ... ....that would be the correct thickness to achieve 8,75:1 ? ...getting lost here...not very gifted in math! :lol: Imnotworthy

#233 clipping_point

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Posted 03 December 2003 - 11:36 PM

More as 0,070" I think: " 0,08 0,08 0,07 0,07 0,06 mm 2,03 1,91 1,78 1,65 1,52 Increased cc 11,79 11,05 10,31 9,58 8,84 Original cc 10:1 61,00 61,00 61,00 61,00 61,00 New cc 72,79 72,05 71,31 70,58 69,84 New comp. 8,55:1 8,63:1 8,71:1 8,79:1 8,87:1

Edited by clipping_point, 03 December 2003 - 11:41 PM.


#234 rasputin

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Posted 03 December 2003 - 11:40 PM

i ll go get me coat :groupjump:

#235 clipping_point

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Posted 04 December 2003 - 04:36 PM

Or as a diagram

Attached Files



#236 Ricky2772

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Posted 04 December 2003 - 05:06 PM

mmmm.....your calculations of 61cc at 10:1 INCLUDE the standard gasket.....that we don't know how thick it is......and according to the graph 10:1 would mean "no gasket"....shouldn't be taken into account?!?

#237 clipping_point

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Posted 04 December 2003 - 05:16 PM

Yes, true! Wonder how thick the standard one is :unsure: :unsure: :unsure:

Edited by clipping_point, 04 December 2003 - 05:25 PM.


#238 clipping_point

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Posted 04 December 2003 - 05:19 PM

Ricky2772, on Dec 3 2003, 14:10 , said:

Supercharger: Eaton M62 helical roots compressor
Intercooler: water to air
Max. boost pressure: 12 psi
Pulley ratio: 1.85:1
Oil cooling: oil cooled pistons and direct mount oil cooler

Aha, GM will use the spray cooling too!? Interesting :unsure:

#239 Ricky2772

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Posted 04 December 2003 - 05:37 PM

clipping_point, on Dec 4 2003, 19:19 , said:

Ricky2772, on Dec 3 2003, 14:10 , said:


Supercharger:  Eaton M62 helical roots compressor
Intercooler: water to air
Max. boost pressure: 12 psi
Pulley ratio: 1.85:1
Oil cooling: oil cooled pistons and direct mount oil cooler

Aha, GM will use the spray cooling too!? Interesting :unsure:

yes, but it will have a more poweful oil pump from start....

I was told by several "experts" :-P that drilling a hole in the conrod would cause a decrease in the oil pressure (and lubrication...) everywhere else, acting like a leak....so I don't know what is really better....

#240 dude

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Posted 04 December 2003 - 08:15 PM

i got some answers from mantaparts about their competition cams. specs: duration 222 degree at .050" and valvelift .464". translated to european its: 288 degree at 0-lift and 11.8mm valvelift. got a packagedeal for piston/rods/camshafts. 1600$. //anders




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