Hello,
Happily I finished my engine conversion from 2.0 litres, to 2.3. The spec detais are as above.
Engine base was c20xe distrubutorless, Bosch Motronic M2.8
Removed resonator before std c20xe (Vectra A) airbox.
Silicone pipe 90mm diameter fitted in front of airbox to give cold air.
K&N panel filter
v6 c25xe air flow meter 70mm inside diameter .Removed the plastic mesh. - custom tube 76mm inside diameter fitted with v6 c25xe sensor. (Until now I test with both diameter tubes to see which works better, I will see the results on the dyno)
Custom carbon adapter to give smooth air flow from airflow meter to the strange in shape c20xe throttle body.
c20xe Throttle body overbored to 67mm and shaved pins to give more space area on full throttle
Custom Intake Manifold (Inlet manifold taper sbd bolted on custom intake with tapered runners from 43mm to 51mm with hornets inside a plenum of 1300cc capacity. It is 22cm long including the sbd inlet.
Thermal intake end exhaust flanges from ferriday enginering.
c20let yellow injectors 304cc on 3bar (I raised a little the fuel pressure about 3,5bar)
Matching the manifold with the cylinder head.
Camshafts specs :
At the moment running on standard c20xe camshafts with hydraulic followers (255degrees, 9,5mm max lift, 110 degrees full lift, lift at TDC 1mm)
In the next weeks I will install my solid followers from catcams and my camshafts are:
Intake: 293 degrees duration, 13mm max lift, 262 degrees duration calculated in 1,0mm, 106 degrees full lift, lift at TDC 4,50mm
Exhaust: 285 degrees duration, 12,25mm max lift, 254 degrees duration calculated in 1,0mm, 106 degrees full lift, lift at TDC 3,95mm
Catcams double valve springs gold series
Catcams aluminum retainers
Kentcams adjustable Verniers
Coscast head (early type 2AH) Ported and polished. The dimension of ports is 49,5mm x 30mm and thru the splitters 26,7mm x 27,5mm
The valve seat ported to fit +1mm oversize valves.
Bronze valve guides
Oversize valves Inlet 34mm wasted stem (6mm), Exhaust 30mm (7mm stem).
Pistons are from Accralite Flat top 88mm forged with Nippon piston rings
Steel con rods kit car spec 148mm modified to fit on x22se crankshaft
Arp2000 rod bolts
Engine block is y22xe from Omega b. We removed the balancing gears system.
Rebored to 88mm with torque plate, installed with custom internal block guirlde.
Skimmed for a squish zone of 1,1mm
Engine capacity is 2300,6cc
The CR eith 94,6 crankshaft and 88mm pistons and skimmed head / block is 12,7:1.
Cometic 1,3mm steel head gasket
Bearings and pillow blocks for crankshaft and rods are Glyco - ACL trimetalic.
Crankshaft x22se removed the balancing gear and is knifed edged and balancing
Aluminum Fidanza pot type flywheel 3,5kg with 6 bolts for 2,2 crankshaft.
ARP flywheel bolts
Aluminum crank pulley and aluminum pulley in altenator from EBAY lmao
Steel inner gear from sbd to oil pump
F20 Standard gears with 3.94CR from F16 gearbox, Quaife ATB F20,
Exhaust manifold SBD TYPE C 4-2-1 Primaries diameter 47mm - length (30 inches), Secondaries 54mm, After the collector 63.5mm. Collector is baffle type. In 4rth cylinder I have a EGT sensor.
Racing Cat 63,5mm diameter with 100 dots per Inch
Magnaflow exhaust system 63,5mm (2,5") diameter with two Mufflers
Oil radiator from Setrab (double size from std one)
Custom program FLASH CHIP 28F512 on the Bosch Motronic 2,8 ECU for the new specifications.
I made myself the program with the help of a wide band controller and the egt sensor. At this moment I made 2000km and on full throtle in high rpms I gave only 22degree ignition. I am into researching what needs a 2,3 engine with such a lot of compression and fittd with standard camshafts.
I have also a DTA S60 ECU but I will install it only if a can not program the motronic with the uprated camshafts that giving a lot of overlap
The first impressions. The engine flies!!
At low rpm it don't feels so good. It is a little stronger than a 2.0 liter c20xe (but because with so much dynamic compression of big CR and small camshaft) I reduced a lot the ignition avans for safety because the engine in the begginig was misfiring. I run only with super unleaded 100octane or with regular unleaded 95octane mixed with pro boost by silkolaine.
The engine from 3000rpm and more is a completely a different engine. The engine responce and the power is huge! The engine spins the wheels so easy with second gear and sometimes even with 3rd gear on bad roads of Greece lmao. The best range of the engine is from 5600rpmup to 7500rpm! It so impressive that revs so strong with 94,6mm stroke on standard cams. Even in 8200 that I setted the rev limiter the engine feels strong! I never felt how a good combination of intake, head , and exhaust may work so well.. The standard c20xe engine revs up to 6300rpm strong and my engine with long stroke and stadard cams revs better to 8200rpm.
I want to install my camshafts to see what will be then.
At the moment my engine I think is about 230hp at around 7500rpm a perfomance I had with my old specs (2067cc with strong camshafts 283 degrees, 11,5mm lift). I will go soon in the dyno before I install the camshafts so I will see the difference on this stage and later with the camshafts fitted.
Thats for the moment.
*Other special mods I made
The car is Opel Vectra A / Vauxhall Cavalier mk3
Have koni yellows special edition with reduced travel (50mm in the front - 20mm in the rear)
Front KW springs -40mm height
Anti roll bar 24mm diameter
Saab wishbones with custum teflon eccentric connection that gives more caster
Front top mounts custom for eccentric alligment to give / reduce caster or camber
Sparco aluminimun strut brace
Rear springs eibach sportline series -30mm
Rear powerflex bushes
Anti roll bar 20,5mm V6
Camber caster kit plates from Eibach
rear z-speed aluminum strut brace
Wheels compomotive MO 16" X 7" ET45
Front Brakes Wilwood Dynapro 4 pot with 300 x 25 brake disk from honda s2000
ebd yelllow stuff brake pads
Goodridge hoses
Rear std 2.0 liter disks
Steering rack c20let with steering quickener from coleman 1,5:1 ratio. Gives 1,93 turn from lock to lock.
Some pictures
The head here is in previous spec. I reinstalled bronze valve guides that I made the slim in the end and I didn't cut them. Also the port is larger now.
Happily I finished my engine conversion from 2.0 litres, to 2.3. The spec detais are as above.
Engine base was c20xe distrubutorless, Bosch Motronic M2.8
Removed resonator before std c20xe (Vectra A) airbox.
Silicone pipe 90mm diameter fitted in front of airbox to give cold air.
K&N panel filter
v6 c25xe air flow meter 70mm inside diameter .Removed the plastic mesh. - custom tube 76mm inside diameter fitted with v6 c25xe sensor. (Until now I test with both diameter tubes to see which works better, I will see the results on the dyno)
Custom carbon adapter to give smooth air flow from airflow meter to the strange in shape c20xe throttle body.
c20xe Throttle body overbored to 67mm and shaved pins to give more space area on full throttle
Custom Intake Manifold (Inlet manifold taper sbd bolted on custom intake with tapered runners from 43mm to 51mm with hornets inside a plenum of 1300cc capacity. It is 22cm long including the sbd inlet.
Thermal intake end exhaust flanges from ferriday enginering.
c20let yellow injectors 304cc on 3bar (I raised a little the fuel pressure about 3,5bar)
Matching the manifold with the cylinder head.
Camshafts specs :
At the moment running on standard c20xe camshafts with hydraulic followers (255degrees, 9,5mm max lift, 110 degrees full lift, lift at TDC 1mm)
In the next weeks I will install my solid followers from catcams and my camshafts are:
Intake: 293 degrees duration, 13mm max lift, 262 degrees duration calculated in 1,0mm, 106 degrees full lift, lift at TDC 4,50mm
Exhaust: 285 degrees duration, 12,25mm max lift, 254 degrees duration calculated in 1,0mm, 106 degrees full lift, lift at TDC 3,95mm
Catcams double valve springs gold series
Catcams aluminum retainers
Kentcams adjustable Verniers
Coscast head (early type 2AH) Ported and polished. The dimension of ports is 49,5mm x 30mm and thru the splitters 26,7mm x 27,5mm
The valve seat ported to fit +1mm oversize valves.
Bronze valve guides
Oversize valves Inlet 34mm wasted stem (6mm), Exhaust 30mm (7mm stem).
Pistons are from Accralite Flat top 88mm forged with Nippon piston rings
Steel con rods kit car spec 148mm modified to fit on x22se crankshaft
Arp2000 rod bolts
Engine block is y22xe from Omega b. We removed the balancing gears system.
Rebored to 88mm with torque plate, installed with custom internal block guirlde.
Skimmed for a squish zone of 1,1mm
Engine capacity is 2300,6cc
The CR eith 94,6 crankshaft and 88mm pistons and skimmed head / block is 12,7:1.
Cometic 1,3mm steel head gasket
Bearings and pillow blocks for crankshaft and rods are Glyco - ACL trimetalic.
Crankshaft x22se removed the balancing gear and is knifed edged and balancing
Aluminum Fidanza pot type flywheel 3,5kg with 6 bolts for 2,2 crankshaft.
ARP flywheel bolts
Aluminum crank pulley and aluminum pulley in altenator from EBAY lmao
Steel inner gear from sbd to oil pump
F20 Standard gears with 3.94CR from F16 gearbox, Quaife ATB F20,
Exhaust manifold SBD TYPE C 4-2-1 Primaries diameter 47mm - length (30 inches), Secondaries 54mm, After the collector 63.5mm. Collector is baffle type. In 4rth cylinder I have a EGT sensor.
Racing Cat 63,5mm diameter with 100 dots per Inch
Magnaflow exhaust system 63,5mm (2,5") diameter with two Mufflers
Oil radiator from Setrab (double size from std one)
Custom program FLASH CHIP 28F512 on the Bosch Motronic 2,8 ECU for the new specifications.
I made myself the program with the help of a wide band controller and the egt sensor. At this moment I made 2000km and on full throtle in high rpms I gave only 22degree ignition. I am into researching what needs a 2,3 engine with such a lot of compression and fittd with standard camshafts.
I have also a DTA S60 ECU but I will install it only if a can not program the motronic with the uprated camshafts that giving a lot of overlap
The first impressions. The engine flies!!
At low rpm it don't feels so good. It is a little stronger than a 2.0 liter c20xe (but because with so much dynamic compression of big CR and small camshaft) I reduced a lot the ignition avans for safety because the engine in the begginig was misfiring. I run only with super unleaded 100octane or with regular unleaded 95octane mixed with pro boost by silkolaine.
The engine from 3000rpm and more is a completely a different engine. The engine responce and the power is huge! The engine spins the wheels so easy with second gear and sometimes even with 3rd gear on bad roads of Greece lmao. The best range of the engine is from 5600rpmup to 7500rpm! It so impressive that revs so strong with 94,6mm stroke on standard cams. Even in 8200 that I setted the rev limiter the engine feels strong! I never felt how a good combination of intake, head , and exhaust may work so well.. The standard c20xe engine revs up to 6300rpm strong and my engine with long stroke and stadard cams revs better to 8200rpm.
I want to install my camshafts to see what will be then.
At the moment my engine I think is about 230hp at around 7500rpm a perfomance I had with my old specs (2067cc with strong camshafts 283 degrees, 11,5mm lift). I will go soon in the dyno before I install the camshafts so I will see the difference on this stage and later with the camshafts fitted.
Thats for the moment.
*Other special mods I made
The car is Opel Vectra A / Vauxhall Cavalier mk3
Have koni yellows special edition with reduced travel (50mm in the front - 20mm in the rear)
Front KW springs -40mm height
Anti roll bar 24mm diameter
Saab wishbones with custum teflon eccentric connection that gives more caster
Front top mounts custom for eccentric alligment to give / reduce caster or camber
Sparco aluminimun strut brace
Rear springs eibach sportline series -30mm
Rear powerflex bushes
Anti roll bar 20,5mm V6
Camber caster kit plates from Eibach
rear z-speed aluminum strut brace
Wheels compomotive MO 16" X 7" ET45
Front Brakes Wilwood Dynapro 4 pot with 300 x 25 brake disk from honda s2000
ebd yelllow stuff brake pads
Goodridge hoses
Rear std 2.0 liter disks
Steering rack c20let with steering quickener from coleman 1,5:1 ratio. Gives 1,93 turn from lock to lock.
Some pictures



The head here is in previous spec. I reinstalled bronze valve guides that I made the slim in the end and I didn't cut them. Also the port is larger now.
