m20b25 with eta bottem end problems.

[e30mpg]

its your timing, it either needs to be advanced or 1 tooth or the opposite way, remember, your timing will be off because you have a I head and a E block,

Wrong buddy, timing mark is the same with "E" or "I" head. i second on vacuum leaks and or fuel delivery problems.

[The Bimm]

Haha its my old block I remember it hesitated a bit but I thought it was the little pits in the cylinders from a previous blown head gasket even though Travis said it was fine when I brought him the block. Oh Travis haha cam shaft sprocket snapped off on your old eta that stripped cam torx bolt snapped happy about it though Couse im doing my swap now.

[e-dirty619]

Wrong buddy, timing mark is the same with "E" or "I" head. i second on vacuum leaks and or fuel delivery problems.

fuel dilevery is ok im starting to think vacuum leaks. i have e36 injectors and a new walbro fuel pump. fpr is working good, i put a gauge on it and watched fpr work fine. maybe sat im going to smoke it and fix all the leaks. ryan!!! that shit is done :/ o well fuck it time for m50?

[e-dirty619]

o smoke tested the engine today and found that the only leak is in the iacv. i just swapped to another one and vehicle is still running bad. i just checked the timing and found it was retarted about half a tooth almost full tooth. i just moved it one tooth and now it sits just a cu*t hair advanced. didnt get to drive it really since i live like right around the corner but it doesn't feel to bad after i mooved that timing.

[The Bimm]

Crankshaft position sensor? Check all your wires maybe something is cutting out

[ForcedFirebird]

It's not possible to be half a tooth off on the cam timing unless you had about .030" shaved off the head.

[e-dirty619]

It's not possible to be half a tooth off on the cam timing unless you had about .030" shaved off the head.

It's weird it was sitting retarted not even a full tooth. It was like right at the base of the next tooth. When I moved it advance one tooth it was at the base of the timing mark tooth but advanced to the base of the tooth/valley I guess. Hard to explain. Cps is ok and jade been swapped out and problem still happens. Just drove it and it feels 80% better so I'm thinking the timing is the main part of my problem

[ForcedFirebird]

It had to be the angle you were looking at it. It is physically impossible to be half a tooth off unless you significantly decrease the cam to crank centers (by shaving the block/head).

[e-dirty619]

It had to be the angle you were looking at it. It is physically impossible to be half a tooth off unless you significantly decrease the cam to crank centers (by shaving the block/head).

Yea I took a pic of it when I get to a computer I can put it up. The angle is straight on so maye this head has been shaved down in its past or something lol. Still getting a little bit of hesitation but not nearly as bad

[ForcedFirebird]

I had .015" shaved off my head and used a .020" thinner head gasket and the cam timing wasn't half a tooth off (.035" shorter between cam/crank centers).

[e-dirty619]

that's as close to head on I could get with the camera ahaha but u can see I went from this and went advanced one tooth so no the cam sprocket line is where the other sprocket tooth is so just a hair past now

[ForcedFirebird]

What are you using on the bottom to tell the crank is on time? Took the timing cover off and used the notch on the crank hub, or are you looking at the timing cover and line on the 6-2 toothed trigger wheel? The wheel has the timing mark 10 degrees BTDC.

[e-dirty619]

What are you using on the bottom to tell the crank is on time? Took the timing cover off and used the notch on the crank hub, or are you looking at the timing cover and line on the 6-2 toothed trigger wheel? The wheel has the timing mark 10 degrees BTDC.

that right there is using the snub on the crank with the block.

[jlevie]

The only way you'd get that error, using the crank hub and notch on the lower timing cover is if the head has been decked to or below minimum. If at minimum, and adjustable cam sprocket or a modified cam sprocket with an eccentric bushing would be the fix. If below minimum a different head is the fix.

[e30trooper]

my head was shaved .010 and just a OEM HG , timing set at TDC from the block. Been beating on this set up one year now, not any timing related issues.