I just changed the head on my h22a4 01 sh prelude since I bent the valves in the old head.. Its almost impossible to move the cams with the timing belt off.. Im sure the valves are not hitting the pistons since im trying to line everything up to install the timing belt..

Any ideas that could cause both the cams to be damn near impossible to turn?

 

Mine has always been like that (H23). I usually just put a wrench on the cam gear bolts to turn them.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hawkze_2.3 &raquo;</TD></TR><TR><TD CLASS="quote">Mine has always been like that (H23). I usually just put a wrench on the cam gear bolts to turn them. </TD></TR></TABLE>

No I mean its reallly hard.. Like I have to smack the wrench really hard to get it to turn..

 

Sounds like something is binding. Check for bent cams, incorrect clearance, stuck/bent valves/rockers, etc. If you take the rockers out the cams should turn freely. With the cams out the rockers should pivot freely and independent of each other. I would suggest NOT trying to force it...

 

I havent tryed to force it.. How would I check the clearances, im guessing just plastigauge them.. If so what should the clearance be on them?

 

sounds like either, that had has the wrong cam caps, or u put on the cam cap backwards, it happens.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eddiebx &raquo;</TD></TR><TR><TD CLASS="quote">sounds like either, that had has the wrong cam caps, or u put on the cam cap backwards, it happens.</TD></TR></TABLE>

Hmm.. Do all the 97-01 preludes have the same cam caps? And if I did put one in backwards do you think it would do something like this?

 

what procedure did you use to tighten the cam caps?

 

I have seen on a few 97-01 preludes (3 or 4) have tight cams when switching cams out. It may be because the journals are formed to the other cams. Are you using the original cams with the head or your cams out of the other head? And yes also valve lash, and over torque on cam plate bolts or impromper order also or combanation of both. Just my 2cents

 

Well the head is from a 97 prelude and the cam caps and cams are from a 2001 prelude.. Do they both use the same cam caps?

Also what would the head code be of a 97 prelude? I want to make sure the guy I bought the head from did infact sell me a 97 head?

 

thats your problem right there, cam caps are not interchangable. The cam caps are fitted to the head they came from. What your gonna need to do is eitehr get a new head, or find a machine shop that can do an align hone to get them clearanced correctly.

 

uh yeah...same reason you can't just swap main caps on the block

 

Thats what I said . shouldnt be to much to take it to machince shop though goodluck

 

Would it be a better option to take the valves out of my new head and install and lap them into my old head since the cam caps that I have are for my old head.. The reason that I got a new head was because I got a really good deal on it and the old head had bent valves in it..

 

Stick with whichever is in better shape. And align hone the caps to fit if need be.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SuperSlow &raquo;</TD></TR><TR><TD CLASS="quote">Stick with whichever is in better shape. And align hone the caps to fit if need be.</TD></TR></TABLE>

Both are in about the same shape except my original head has bent valves in it..

Does anyone know the prelude h22 head codes.. The 2 that I have are different.. The "new" one that I installed on the car has the code P13 HF1 on it.. I forget what the other one is but its whateven comes on a H22A4 prelude sh 2001 stock..

 

you should be able to find the year on the casting somewhere. Near the exhaust ports if I remember? If the cam journal clearances are off, you can move the new valves to the old head, or else hone the journals to the right size. The caps may not work with the old head then. Why didn't your new head come with the cam caps? They are generally kept together, and are not really supposed to be interchangeable.

 

Not sure why it didnt come with them.. I didnt really thing about it when I got the head and I can remember who sold it to me to go back to then.. Im just going to rebuild the old head with the "new" heads valves and everything should work fine then..

 

Here is what Flyrod means



Pirate

 

Ill have to look for the year on the head but the "new" head that I got has the same casting number as the one in the picture.. My old head has a different number..

 

p13 is a 4th gen head...

p5m is 5th gen
p5p is Type SH