vivite_sir

Hi,
Engine is 05 k24a2 installed on Ep3.
we attempted to swap the VTC gear from an RBB to an RBC and all went well until we felt that the chain slipped. We did it with the engine out of the car and without removing the chain cover, set everything to TDC, pinned the tensioner, aligned the cam marks, carefully pulled the two cam gears, kept tension on the chain, etc.. rebolted everything and somehow, things got misaligned.

It appears the chain slipped, but stayed on the crank, because we caught the slack and it's turning.

we then:

1. Took the chain off the cam gears
2. Locked the cams in the back in the right position so they would not move by blocking the (3/8") holes on the pulse plates
3. align the crank pulley on the mark
4. put the chain on the cam gears while making sure the marks were alligned on the cam gears
5. rebolted everything.
6. turned to check there was no slack, everything was turning,etc..

Here is what everything looks like in pictures:
cam gears alligned (engine is at an angle because it's resting on the oil pan on a wooden crate)


Crank pulley alligned on the mark


Pulse plate allignment looks good:


Everything turns correctly, alligns, has tension, etc...

looks ok to me, but does it look right to you guys or do I have to unbolt the chain cover and check everything ? (hope not)
I'd rather make sure than have the engine go boom once vtec kicks in.

I appreciate the help.

scmil95eg

I wouldn't worry about going "boom" when VTEC kicks in. If you're off a tooth anywhere, you'll know as soon as you start it up. You have two options: spend 30 minutes removing the front cover to confirm you're OK while the engine is out of the car. OR, risk it, run Vegas style. Think of all the fun you'll have removing the front cover once it's in the car that won't start... Motor mount in the way, 2" of room to work with, resealing it without getting hondabond all over everything - oh the joys.

If you have to question something like this, you already know the answer.

vivite_sir

I get your point, but the real question is how can I be off a tooth when everything that should line up actually lines up, turns correctly etc...

scmil95eg

I didn't post the question and I'm certainly not trying to argue with your observation since I can't observe for myself. But if you're that confident you're timing is correct, drop it in. If you're right, you win at life. If you're wrong, you're in for a lot more work. What else is there to debate?

JRCivic1

Good answer Scott... better safe than sorry. I agree that all marks look correct... so the real question is how did you hear a chain "slip" sound yet all is still in proper orientation ???