ok, i have a spare, bare 2.3 turbo head at the machine shop being cleaned up. other than a ranger cam...what would you recommend as far as valve size, porting, spring rates, etc as a base for building say 300-350 horsepower. what are this heads weak points as far as exhaust/intake flow as well as any oiling issues?
1.89/1.59 valves,have the spring pockets cut for double springs and lift clearance,new guides,cam bearings etc. Have the bowls ported also.
I got 30 over valves and bigger roller rocker arms and a comp cam and a Aluminum radiator and a top end rebuild w/ new turbo and I have bout 200 to 220 Hp and it screems.
that equates to what size valves?
screems is spelled screams. it's called a d-i-c-t-i-o-n-a-r-y...you can get them at the l-i-b-r-a-r-y, or in your case w-a-l m-a-r-t.
Actually,the first word of your sentence (all sentences) should be capitalized,and "w-a-l m-a-r-t" should be "W-a-l M-a-r-t".The "W" and "M" should be capitalized.We all make mistakes.No need to get ugly about it.
It is when it derails the post. Nothing personal here, but the post was about what do do with a spare head and only 1 post (not to include this one) mentioned anything involving valve sizes, porting etc. Also please see s-a-r-c-a-s-m.
Sarcasm?Oh.When you post,I personally believe that you (meaning anyone here) is automatically open for any kind of comment.It goes with the territory.Don't take things too seriously,or you're going to set yourself up for disappointment every time.Thanks for being here.
True...so which "her" would you be referring too?
I've edited.You can't prove a thing.
Touche'! :D (that's french by the way;) )
oops..almost missed it but "you" is a singular pr0noun and thus should be followed by the singular "be" verb are. "IS" is plural(meaning more than one) and should be used in conjunction with plural nouns. ref saturday mornings schoolhouse rock.
30 over what ever stock size is.
you talking pistons or intake valves? when you bore the block, one generally refers to it being bored 10, 20 or 30 over. Intake and exhaust valves aren't referred to as .030 over, just whatever size you put in I.E 2.02" intake 1.92" exhaust. TC Man 01... i hope i dont come across as arrogant as that's not my intent and i do apologize if thats the case-- it's just that some of your posts seem to be like your texting on a cell phone...l24
I call B.S
There is no such thing as 30 over valves.
There are NO larger ratio roller tappets for a 2.3
You could have gotten that with old stock stuff.
To the OP. Even if you don't have larger valves put in the head, general clean-up and port work is worthwhile. Are you planning on doing the porting yourself? I would look to something else in regards to a cam that the RR. Boport on TF has some nice stuff, including good street cams, and drop-in dual springs (running a set on my car currently).
aaah, thanks chuck w thats what i was looking for. i was thinking ranger or esslinger but i will look at this source as i haven't heard of it before. they are installing hardened seats and cleaning the head up for me but i wasn't sure if i need to go bigger valves while i have it at the machinist.. as far a porting at home...i have a nice new dremel but what sort of stone do i start with and how do you port match head to intake? do you use the gasket as a template for both?
well first off, porting with stones will take FOREVER. I ported my head and used the 6" carbide bits from summit in an air die grinder. You will need to make sure that everything has a nice smooth transition and when I took my head in to have seats and valveguides put in it, the guys I took it to are a real high performance shop and he said my port job looked great and said the way the 2 and 3 intake ports sucked because they were really easy to get in the water jacket. Oh, and its wierd seeing an iron 2.3 head in there with all those aluminum sbc heads, rofl. A dremel will probably be dead after one port, lol. I used a boport 1.9 cam with the used roller rockers from him and springs. I maxed out the stock fuel system with my holset hx35 at 12# of boost at 5000 rpm.
Go for the larger valves if you can/want to. I wasn't going to spend the $$ on mine, so I stayed stock. Have them do the seats and guides though and hold off on the valve work until you are done with the porting to avoid messing up valve jobs.
You'll need carbide bits to port an iron head, you won't get far with a stone and a dremel. I use the carbide bits and then clean up/smooth with sanding rolls.
You DO NOT want to gasket match on the intake side. Unless you can really maintain runner cross-section all the way through (which is pretty difficult on a stock intake) one of the worse things you can do is open it up at the head only to have it neck back down in the port to the CC. A smoothing out and cleaning up of injector bosses is really all you want to try and do on the stock intake.
On the head side, again, don't try and match the port to the gasket. Clean/smooth the runner and spend most of your time cleaning up the valve guide boss and the bowl area (where the port enters the comb chamber).
You can open up things a bit more and hog things out, but unless you really know the magic to it, you can do more harm than good.
One thing you can do is open up the exhaust runner in the head, but it takes a bit of work and a certain way to do it. You do NOT want to touch the floor of the port other than the smooth it. Basically you want to "raise the roof" of the runner to effectively increase it's radius, thus improving flow (the less sharp the turn the air has to make, the faster it moves). On mine I worked it up a bit and then carried that transition all the way to the bowl area.
You can see how rough the bowl area is on a stock head here
http://www.turbochuck.com/images/Tbird/2.3T%20Refresh/headbefore.JPG
and how much you can clean it up here
http://www.turbochuck.com/images/Tbird/2.3T%20Refresh/headafter.JPG
(I also unshrouded the valves a bit).
I could have gotten really crazy on the guide boss (some guys take them down all the way), but chose not to.
Anyway, I am no expert at all at this, just trying to pass on info.
here is my head before going back on. unfortunately I took a bunch of pics of the first head I did that I ported a hole through:punchballs: but I didnt take many of this one
(http://i26.photobucket.com/albums/c146/Fordguy545/motor%20stuff/SNV30317.jpg)
And how it sounded on first startup with the 1.9 cam. One thing I will say about that cam, is that if you live in an area that has a lot of hills, you will probably hate it because it doesnt have much in the way of a bottom end. this is with open downpipe though. Through dual magnaflows, its actually pretty quiet
(http://i26.photobucket.com/albums/c146/Fordguy545/motor%20stuff/th_SNV30370.jpg) (http://s26.photobucket.com/albums/c146/Fordguy545/motor%20stuff/?action=view¤t=SNV30370.flv)