Campro Cps Bottom/internal Modification (completed)
#1
Posted 06 August 2010 - 10:20 AM
and its 'rod' down there swung open a hole on the crankcase wall
Vented hood and an open pod sitting right below the vents caused a serious hydrolock after a heavy rain. Second cylinder drank most of the sky juice and the conrod snapped almost instantly. Conrod cap swung open a 3cm x 5cm hole on the crankcase wall. Piston jammed in the cylinder and that's it.
Supposed to be a repair job on this 2 month old CPS. After some discussion with the owner, we decided to do some minor internal modification since the work and time required has no difference.
In short, the engine will be enlarged to 1639cc from 1597cc. The flywheel, crankshaft and the crank pulley will be balanced and lightened as one assembly. All new pistons and conrods (1 new rod) will be weighed, lightened and balanced.
At this moment, the engine has been completely dismantled to the last pieces, cleaned and sent to be repaired and modified. New oversize pistons, new rings, new bearings, seals and gaskets are already here.
For a week or so, our job is to wipe the car shiny clean.
CPS intake camshaft with trilobe cam profile. The middle lobe is used when CPS is not activated. Side lobes pushes the valves by few mm further.
Transmission sitting on a stand, holding up by its own mounting.
#2
Posted 06 August 2010 - 10:22 AM
More about the Titanic hole
CPS activation solenoid
#3
Posted 06 August 2010 - 10:24 AM
Super long head bolt
New oil seals, bearings, gaskets, piston rings, and a connecting rod
The new 77mm pistons
#4
Posted 06 August 2010 - 10:26 AM
Short block, crank assembly and the piston assemblies
Crankshaft, conrods and pistons are installed back into the block. Notice the shiny area on the conrods (1, 3 & 4), due to lightening and balancing process
FEAD block and oil pump being assembled to the short block.
#5
Posted 06 August 2010 - 10:28 AM
Back in to the engine bay
Installing the engine head
#6
Posted 06 August 2010 - 10:31 AM
Oil seals, bearings, piston rings, etc
The new pistons
Piston & Connecting Rods, notice the snapped one
#7
Posted 06 August 2010 - 10:33 AM
Organizing the wire harness took me quite a while. It looks almost untouched.
FIRST START VIDEO
Stable vacuum level is a good sign for good compression and no abnormal leak over the piston rings.
Water temperature after a series of hard running-in drive. Healthy.
Engine oil temperature after a series of hard running-in drive. Healthy.
Did about 40km so far. This was taken at exactly 20km from the 'resuscitation'.
#8
Posted 06 August 2010 - 10:34 AM
The car has been serviced after its first 1000km run-in. It's getting smoother day by day and the owner is going to dyno-test it soon.
#9
Posted 06 August 2010 - 11:20 AM
The car has been serviced after its first 1000km run-in. It's getting smoother day by day and the owner is going to dyno-test it soon.
Bro. Drex,
Nice write up.......
heh! heh! am interested also what amount of hp and torque gain from the new 1639cc power plant......
Question:
The Vented Hood and Open Pod able to send in so much sky juice to flood that combustion chamber? Then those who Mod, better place the open Pod further away.....