svt 1st and 2nd gen

haha....tis we know lah ...for sure his boss like 4 wife and kena jumpa lawyet 4 times also hahahahah.........
 
cant really gain d info.

where d linker?

can some1 edit d pic posted; highlight d different by circle?

sorry 4 inconvenieces n thank

the only thing tat i notice is the port of the manifold..different shape only..the rest i am blind...i din see carefully lah ...
 
u know the throttle link where mechanics use to rev the engine from the engine bay...??
if first gen...it has only 2 of those things...
and 2nd gen...it has 1 of those things...
u'll know when u see it...
it does not show in the pic..
 
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hehehe....good la if u already get it..
no pics that are big enough
 
woa...bro adeen memang bagus lah ...we all not sure only he go find pic liao...
thx man .....
 
hehehe...not that much time free nowadays...
hope get more free time..
 
just cut & paste..

More detail on the the VVT logic - The VVT comes in three types for the 20 valve. To the best of my knowledge, silvertop 20v's pre May 1993 have the VVT actuate at about 4400rpm. Post May 1993 they seem to work on throttle position and ignore revs.

The blacktops seem to work like this, as described on Club4AG -
1. Starting. When you crank the starter there will be VVT operation until the engine fires up, obviously to allow more air into the engine to allow an easier fire up.
2. Coolant temp. There is absolutely NO VVT operation when the coolant tempt is below 50°C except for that brief moment when you operate the starter. Reason obvious, who want to stress a cold engine.
3. Engine rpm. VVT will operate in any rpm between the range of 1500 and 7200 when the inlet manifold pressure is right. The min and max range can be a little out because I was reading from the car tacho. Trust me they are very close.
4. Engine load/inlet manifold pressure. This seems to be the single most important parameter controling the system. The VVT will NOT operate if the inlet manifold has more than about 5 inches of vacuum (can't get the exact reading because everything happen so fast. It's very close.). This is very close to zero vacuum which is atmospheric and that is about the maximum load the map sensor will read to tell the engine in an NA car. As you can figure out the throttle will usually be in the more than 3/4 position for this to happen.
5. VVT will work without the speed sensor.
 


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