Hi all, Just a quick question in the hope that someone will have looked this up on Etka. Does anyone know if there were any engine hardware updates between the passat 3.6L BLV engine code and the later R36 BWS engine code? I know the output rose by circa 20 hp but was this attributable to software updates, hardware, or a combination of both. I guess the major things I am interested in are cams, pistons, rods, head, fueling & VVT + valvetrain. Unfortunately my version of etka only goes up to 2007 and changeover appears to have been just after my version was issued. Any experience would be much appreciated, Thanks, Neal.
Neal, Since no one could step forth... I understand the infomation from VW suggests yes there are. The bores in both are the same 89mm BWS - R36 from March 08 Displacement: 3597cc Peak Power: 295bhp@6600 rpm Peak torque: 261lbft from 2400-5000rpm CR: 11.4:1 Stroke: 96.5mm BLV - from June 08 Displacement: 3580cc Peak Power: 275bhp@6200 rpm Peak torque: 268lbft from 2800-5000rpm CR: 12:1 Stroke: 95.9mm (same stroke/crank as 3.2 VR6 engines) There were later engines that became available in 2009 and they are CDVA - 3.6 from March 09 Displacement: 3597cc Peak Power: 256bhp@6000 rpm Peak torque: 261lbft@2400 CR: 11.4:1 Stroke: 96.5mm CNNA - 3.6 from May 11 Displacement: 3580cc Peak Power: 275bhp@6200 rpm Peak torque: 261lbft from 2800 CR: 11.4:1 Stroke: 95.9mm In order to achieve the power and torque targets, the engines must be run on 98 RON fuel. Running on 95 RON would result in reduced performance. I also have the power/torque plots for both variations as well. I can also see there is quite a lot of conflicting infomation out on the internet HTH.
Thanks Eddie, Apologies for the long delay with my appreciation. Would it be possible for you to post the plots for the different variants too?
Interesting info Eddie, do you know the weight of the 12v VR6- 24v r32 mk4 and mk5 and the R36 engines
Ok some ETKA digging for you! Basic block for 3.2 AXZ, 3.6 BLV/BWS appears similar, they all use the same sump. but the driver side end seal is different: 022 103 151 D - AXZ/BLV 03H 103 151 B - BWS cylinder head uses same basic parts all over, but the casting must be slightly different somehow: 03H 103 351 A - AXZ/BLV 03H 103 151 B - BWS cylinder head gasket is the same for all: 03H 103 383 K Cranks are all different: 03H 105 101 A - early AXZ 03H 105 101 C - late AXZ 03H 105 101 B - BLV 03H 105 101 H - BWS conrods all the same as are all the bearing shells: 03H 198 401 A - conrod pistons are all different: 03H 107 065 J - piston 1, 3, 5 - AXZ 03H 107 065 N - piston 1, 3, 5 - BLV 03H 107 065 S - piston 1, 3, 5 - BWS 03H 107 066 J - piston 2, 4, 6 - AXZ 03H 107 066 N - piston 2, 4, 6 - BLV 03H 107 066 S - piston 2, 4, 6 - BWS 03H 198 151 A - set of piston rings - AXZ 03H 198 151 B - set of piston rings - BLV 03H 198 151 C - set of piston rings - BWS camshafts + valves: 03H 109 101 J - camshaft, outlet - BLV/BWS/AXZ 03H 109 102 J - camshaft, inlet - BLV/BWS 03H 109 102 K - camshaft, inlet - AXZ 022 109 601 G - inlet valve, 102 022 109 601 H - inlet valve, 136 022 109 611 N - exhaust valve, 102 - AXZ/BLV 022 109 611 P - exhaust valve, 136 - AXZ/BLV 022 109 611 D - exhaust valve, 102 - BWS 022 109 611 E - exhaust valve, 136 - BWS Cam chains etc all same except for an 'input shaft' differs on BWS which is just the stud one of the sprockets runs on (maybe down to the different end seal above?) oil pump, pickup etc all same but dipstick and guide tube differs for AXZ, possibly just down to inlet packaging or something oil filter etc same on all, but cooler + seal different on BWS. seal is larger so maybe the oil cooler is just bigger? end cover is same on all coolant pump, thermostat and engine flanges same on all, some hoses differ on the 3.6 engines to the 3.2 inlet manifold same on both 3.6 engines, but different to 3.2 (3.2 is 1 piece, 3.6 is split): 03H 133 185 F - inlet manifold - AXZ 03H 133 201 N - inlet manifold upper part - BLV/BWS 03H 133 204 B - inlet manifold lower part - BLV/BWS 03H 133 062 - throttle body - BLV/BWS/AXZ fuel rail and injectors are same on all, fuel pump differs on BWS
Apparently the 24v 2.8 is lighter than the 2.9/8 12v VR6 lumps due to items like plastic manifolds and a more modern manufacturing techniques. I'm also fairly confident that there is only a small amount of extra weight added when you jump to the R32 and the R36 respectively due to uprated manifolds, cranks and other such things. The most common number I seem to find when it comes to engine weight is for the 2.8 VR6 being in the region of 185KG's.
I don't think the plastic intake makes up for the difference in the cylinder head weight. The 24V head is a LOT heavier than the 12V's.
