Sylvain2000

Without de pin the oil should exit freely trought the rocker and create a pressure loss.

As far as notching , like I said , I don't know much about it . Please someone correct me on this. But with the oil pan off you can see the bottom off the cylinders where it should hit ??

s2000Junky

eMotion

I couldn't really feel vtec engaging while driving. There was a slight bump in the dyno curve around vtec point. My mapper thinks I don't have Vtec on at least one of my camshafts, probably the exhaust one.
Now I plan to install the Brian Crower stage 2 camshafts with stock springs and new BC steel retainers. Do you know if there is something different that needs to be known when installing thw BC camshafts compared to the oem camshafts?
My other very important question is: do you know if the stock head support horse power up to the 270-280 whp? With the BC stage 2 camshafts and expect and hope to reach the 270-280 whp but I don't know if the head will require porting for that power level? Will I be always better off with porting the head or porting is really neccessary above the 290 whp power level when ITBs are installed.

s2000Junky

If I were you, I would put the new cams on the counter as to not further complicate things until you can get the stock cams/vtec working properly/engine putting down what its supposed to and have it earn your trust before worrying about trying to get every little bit of hp out of it (which those cams may/may not do) Having your engine builder take responsibility for the clear mistake/oversight wile he is counting his lucky stars no engine damage occurred wile that roller found its way down the front timing cover and into your pan is a priority, or he would replacing your engine on top of tearing it down for free. None of this troubleshooting should be costing you anything I do hope, now that its been discovered what the problem is. These parts dont just fall out randomly, its on the engine builder. Get this all sorted out and on the up and up first, worrying about aftermarket cams later if your not happy with the output after its working properly.

cars2kman

I have the CNC kit on an 01, my head was ported by RLZEnigneering, stock valves with Supertech valve seals and beehive springs. The car makes 268whp with stock cams, stock header and intake manifold, I think you will need head work to make 270whp. We think we need more flow from the IM before installing cams, it seems that the IM is the hold up as far as making more power on my car. We've been waiting on the Skunk2 IM to come out, but Jason has introduced an adapter for the Kseries Skunk 2. I hope by spring Skunk will have their IM released and I'll have a choice between Jason's setup and Skunks.

imstimpy

Ditto.

I am continually astounded by the naivety here. Find the problem first by addressing one part or question at a time, cross it off or fix it, verify, then move to the next thing. The last thing you should be doing is swapping parts for more HP when you obviously have something wrong here.

eMotion

Does this pressure loss happen mainly in the head of the engine? If so, then it can lead to excessive wear of head components like camshafts and rockers. Am I right?

Sylvain2000

That is what I think

Slowcrash_101

To install hotter cams you have to make a small modification to the underside of the rocker arms. Did you get this resolved?

eMotion

Hi again, I finally fixed the problem with notching the cylinders and installed an endyn intake manifold 4 inch CAI, ported head, BC stage 2 camshafts with BC double springs and this time I had Vtec starting at 3500 rpm but made only 225 whp and 240 nm at 6500 rpm. The engine is keeping the power graph flat from 6500 to 7500 rpm and then starts to drop. I still wonder why it will not make more power above 6500 rpm. At least this time the engine is about 13 whp and 38 nm stronger than the power before all these mods. Does any have any idea what might be wrong this time or had any similar experience?