I want to install Stage 2 cams, Titanium Retainers and uprated valve springs. I've been looking at Crower and Skunk2.

I've been told that you need uprated valves with the the Skunk2 but can you install the Crowers without upgrading the valves.

I have the H22A8 engine, I know it has the Type S 11.1 compression pistons but I'm not sure about the valves.

Any advice would be appreciated.

Firthy

 

no u do not need to upgrade valves i don t think u have to even with skunk 2. I did it just because i bent a valve but all motor i wouldn t see the need for u to do it

 

Both the Crower and Skunk2 stage 2 cams require you to upgrade your valvetrain, the valves can be left stock, it's just your retainers and springs you need to upgrade in order to avoid coil bind and bending valves.

 

The valvetrain upgrade (springs/ret) isn't really mandatory... technically. If you keep the stock rev limit, the factory parts are more than enough. Of course, that means you're not using the full potential of the more agressive cams whose powerband is typically past the stock max engine speed.

So you raise the rev limit and you're more or less obligated to upgrade the valvesprings and retainers to avoid some nasty valve float.

However, Skunk2 warns against upgrades the actual valves with their st2 cams for H22A's (at least). I guess the higher lift could cause the high compression or oversized valves to make contact w/ the piston.

Adi

 

Before installing my Crower stage 2 cams I did some research on springs. I wasn't really impressed by the aftermarket offerings because the loads were so high and very few of them could be used with a steel retainer that would fit with an unmodified rocker arm.

After measuring spring loads and coil bind height of the stock Honda springs I resolved that the intake was OK, but the exhaust was too close to coil bind. Therefore, I purchased and installed a new set of H22 intake springs on the exhaust side. I was able to change the springs in the car as well.

 

just upgrade the springs and retainers and u ll be fine don t worry about the valves unless ur going to be adding some spray in there

 

You're confusing two things. Valves and Valve Springs. Valves can stay. Springs need to change so they don't bind. the new Cams will have a higher lift and the stock springs probably can't handle it. Also, the cams probably don't make power until higher revs. Probably past your limiter. Ask questions. Find out where these cams make power and if you'll have to raise your limiter to take advantage of it. Factor in the cost to that also.

 

I'm not going above stock rev limit but I wanted a bit stiffer spring so I just went with oem outers with portflow inners. I don't want something that the seat pressure is going to cause premature wear on everything!