cam problem

[b20b]

Please explain what is LCA , I know tdc( top dead center)

I have noticed that when I position my crank pully on the tdc mark my cam gears are not lined up.

If I rotate the crank about 20 mm past the mark the cam gears line up.
I thought both were supposted to line up perfect.??????

Yes the engine has a thin head gasket as well as been slight machined.

How do I reset the cams to line up.
I was thinking that I should place the crank on the tdc mark and adjust the cam gears so I have 1mm of lift at tdc. IS THIS RIGHT

[z3lda]

LCA = Lower Control Arms

[TODA AU]

Your cams are retarded (LOL)
Sorry...
Seriously though, you could well need a set of vernier cam pulleys to set your cams where they aught to be.
When a cylinder head in machined, the cams become retarded.
When the block is decked, the cams become retarded,
So too, when you use a thin head gasket, your cams become retarded.

LCA = Lobe centre angle.
It is the angle in crankshaft degrees that maximum lift of the camshaft arrives at.

[b20b]

Is a more accurite way to make sure the piston is at top dead center is with a dial guage put ontop of the piston in stead of using the mark on the pastic cover.I would of thought the piston would stay at tdc for a few degrees of crank rotation . So what is the best way to set the cams right (with the engine still in the car):rolleyes: I just got some adj cam gears

Could someone do a step by step proceedure for this with setting to use



Your cams are retarded (LOL)
Sorry...
Seriously though, you could well need a set of vernier cam pulleys to set your cams where they aught to be.
When a cylinder head in machined, the cams become retarded.
When the block is decked, the cams become retarded,
So too, when you use a thin head gasket, your cams become retarded.

LCA = Lobe centre angle.
It is the angle in crankshaft degrees that maximum lift of the camshaft arrives at.

[b20b]

Could some one explain some of the items in the section i copied below

Which lobe is the primary lobe

To check 1mm of lift do you put the dial guage on top of the valve

How do you set LCA to 105 deg. Where do you get Mr gasket degree wheel (can this be done with the engine in the car) or is there a easier way:rolleyes:

Whats the setting for sports injection






For 1600~1800cc using Type R intake manifold & throttle + TODA header. Set LCA to 105deg.
To do this you need TDC guage & dial indicator.
Engine must always be rotated in anti clockwise direction.
Use primary lobe for checking, 1mm lift / 0deg @ TDC / Int ~ Ext
Valve lash must be correct before setting.
When it's right, Idle is stable @ 850~900rpm.
The other tell tale is the dizzy is centre'd when ignition timing is correct.
(Ie: What you get at the crank, is what you get at the ECU & visa versa)

Engines using sports injection & or capacity over 1800cc benifit from alternative setting point. (Mr Gasket degree wheel required)
Headers that initially don't work can be turned into stars by changing exhaust LCA. That is bad headers can be made to look good. Great headers simply shine.

[TODA AU]

Is a more accurite way to make sure the piston is at top dead center is with a dial guage put ontop of the piston in stead of using the mark on the pastic cover.I would of thought the piston would stay at tdc for a few degrees of crank rotation . So what is the best way to set the cams right (with the engine still in the car):rolleyes: I just got some adj cam gears

Could someone do a step by step proceedure for this with setting to use

What sort of cams have you got?
Some are easier that others.

[b20b]

I have type r integra (jap spac) cams.......with quad throttle bodies




What sort of cams have you got?
Some are easier that others.

[b20b]

Anyone have the answers to the questions

Any help would be great:wave: