H23 Delta 272 camshaft issues

[d112crzy]

I think that I have 3 bent valves, is the water test a good indication of which are bent? Also they are bent so very slightly that it is not something you can visibly see, do I need a valve job on the valves Im replacing or will new ones seat just fine? I know that a valve job is a good idea, but Im starting to run out of spending money and time.

It's not a completely accurate way of determining bent valves. There could be carbon build up and the water is leaking past.

But if it's a big amount of leakage, then it would be safe to assume you have a bent valve.

[HondaFan81]

I think that I have 3 bent valves, is the water test a good indication of which are bent? Also they are bent so very slightly that it is not something you can visibly see, do I need a valve job on the valves Im replacing or will new ones seat just fine? I know that a valve job is a good idea, but Im starting to run out of spending money and time.

It as good of a way to test without any proper tooling, I've used the method many times and it hasn't failed me yet. You will water or solvent into the intake ports and wait for leaks, if any and so same with exhaust. It will let you know if you need a valve job or it is good enough. I use this method for any stock rebuild, but for any true performance motor you will have the head redone as you will have it ported and whatever valve job you want, so it goes hand it hand.

Anyhow, I would have your head checked out by a shop (i.e. cam journals, etc.), then if all well have the standard head reconditioning done, replace all valves necessary with new valve jobs and seals.

[trickedaccord92]

if you can afford it i would say now is a good time to order an aftermarket valve train kit and have it all professionally installed and have the head ported and polisheed by someone who will back their work with warrantry that way if it is fucked again they will have to fix not you just my .02 because personally i dont like fucking with head work i would rather let someone who knows what they are doing change out components like that ... now if it was just stock cam to cam swap or timing belt ... i have no issues with that but changing out components like that would bother me

[dbsharp]

I would absolutely love to fully rebuild my head, but I can only afford a fix for now. is acetone thinner that water? I would think that a very thin liquid would be great to see if there is any small gap between the valve and head. I'm gonna replace the 3 valves and see If I can make it leak and then do a compression test. If needed I will get a valve job. this motor has always had above average compression numbers (210 psi), but there doesn't seem to be much carbon build up. I'm getting 1k back in taxes, but I can't wait that long to do this. I plasti gaged my cam journals and they are all fine. I have installed valves and springs/ retainers before, so I'm going to replace the bent one's myself and see what Ive got from there.

[HondaFan81]

I would absolutely love to fully rebuild my head, but I can only afford a fix for now. is acetone thinner that water? I would think that a very thin liquid would be great to see if there is any small gap between the valve and head. I'm gonna replace the 3 valves and see If I can make it leak and then do a compression test. If needed I will get a valve job. this motor has always had above average compression numbers (210 psi), but there doesn't seem to be much carbon build up. I'm getting 1k back in taxes, but I can't wait that long to do this. I plasti gaged my cam journals and they are all fine. I have installed valves and springs/ retainers before, so I'm going to replace the bent one's myself and see what Ive got from there.

Still need a valve job man. At minimal, you MAY be able to get away with valve lapping compound, but not if you have a bad enough leak. This is not a question of money, but you either do it right or you wait until you can, otherwise it is pointless.

[dbsharp]

ok I measured the actual valve lift and all the ones I measured come out to be .455". I measured the one in the number 1 cylinder intake that has coil bind, and the one that doesn't right next to it. They have identical lift, so that must mean that the valves are a different length or the place where the spring retainers sit on the stem is different. WTF!!!!!!!
I'm going to have to throw my stock cam back in there and save the money to build the head completely, unless a machine shop can do something like mill down the area that the spring sits on.

[dbsharp]

I think i'm going to buy a h23 head from another member and change out whatever parts need to be changed to make this cam work.

[HondaFan81]

Why not remove the head and diassemble it, find out where the problem is specifically and see if this head is repairable, then compare that to cost of another head, etc.

I take it this original head has no portwork or other monies invested in it?

[dbsharp]

no money in it. I have rented two different valve spring compressor tools and neither one will do the job. this is getting frustrating. I want to get my springs off so I can measure the valve lenght, Im sure that that is where the problem is. Does anyone know where I can find a set of valves for the h23 for a decent price? I looked at ferrea and I didnt see any h23 valves. advance suto sells intake valves for super cheep around $10, but I don't know if It trust them.

[starchland]

good stuff man

[turbo90accord]

Go with either oem or KMS valves if you want performance valves. Also you may want to contact bisimoto because he has been working on a deal with some suppliers on valves.

[dbsharp]

kms doesn't list a h23 valve, are either the h22 or f22 valves the same dimensions?

[dbsharp]

I'm getting a h23 head tomorrow. Thanks twokexlv6coupe
If my cams fit in it and it is in good condition I will have it running soon. I wonder how much I could mill off this head without running into any issues. I'm thinking of claying the motor, how much piston to valve clearance do I need?

[dbsharp]

I found somewhere that it said that .035" is as close as you want your valves to come to your pistons.

[HondaFan81]

I found somewhere that it said that .035" is as close as you want your valves to come to your pistons.

Reference Info:

Most piston-to-head clearance are .040 inches

For my Bisimoto stage 3 camshaft, which is on the more aggressive side of the market (no other F22ax regrind cam touches it), with headgasket installed:

intake piston-to-valve clearance .090 inches
exhaust piston-to-valve clearance .110 inches

without headgasket:

intake .070 inches
exhaust .090 inches