Hi I've still got my high hcs but I'm gonna
Try the cam settings
I have a Kent cam bm63 cam fitted
And I've ordered the veriner pulley
On Kent cams it say ltdc 1.57mm inlet
What does that mean
Do I turn the veriner cam 1.57mm toward the inlet or exhaust
high lift cam settings
Moderator: martauto
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Brianmoooore
- E30 Zone Team Member
- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
At TDC the inlet valve is opening. You turn the vernier which ever way gives a lift on the inlet of 1.57mm at that point.
Not clear whether that is measured at the valve itself or the cam, so you'll need to check on that.
Not clear whether that is measured at the valve itself or the cam, so you'll need to check on that.
I would find the crank degree corresponding to 1.5mm valve lift point on opening side and again the crank angle corresponding to 1.5mm valve lift on closing side . Once you have those two numbers adjust the cam so the midpoint occurs at ~108 degrees ATDC . This will set the ICL to 108 which is a good number. You'll probably find the cam will need to be advanced a few degrees to achieve this.
The alternative is to set the vernier at 0 and this should give same setting as oem gear. Then you go to dyno and adjust 2degrees at a time until it makes most power. This will take a few trips to dyno. I would advance the cam a little at a time as a first step then try the other way to retard it
Also make sure you have enough clearance between valve and piston
The alternative is to set the vernier at 0 and this should give same setting as oem gear. Then you go to dyno and adjust 2degrees at a time until it makes most power. This will take a few trips to dyno. I would advance the cam a little at a time as a first step then try the other way to retard it
Also make sure you have enough clearance between valve and piston
E30 325is with M20B31