so i have decided to port and polish my own heads. iv done this before on other rigs so dont worry about that part. i was just wondering if anyone has ever done it before and any advice yall may have? if any has even pulled there heads some advice or tips onthat would be nice too. i have a chilton so i know all the torqu specs and shtuff. ideas?

 

1st things first if its your daily driver, you can't do it as you'll need a few weeks to port the heads and get it back together. You dont wana rush it.

But if you decide to do it, its not to bad to accomplish.
The tear down is important. LABLE EVERY wire, vac line, and TAKE pictures as that will save your butt when you put it back together.
Keep in mind that If you do this you might as well change out some things that are good mantenence. Such as Timing chain, dizzy o-ring, valve seals. These items are not that exspencive.

I spent personally
$118 on the delta cam and lifters
$30 on the new valve springs
$10 on the new valve seals
$25 on head gaskets
$30 on carbine bits to use on a dremmel for the porting
$30 on other gaskets
$50 on a new timing chain/gear set

Thats not too much $ really with the gain I saw. Let me remind you what this combination did again on my car for 0-60 times. http://www.youtube.com/watch?v=vtMKAf_Bh6o Go video tape your car then watch this and see how much faster it is then stock which is from the high 9 second area to the low 10 second area. Im safe to say it was making a 0-60Mph in 8 seconds in that video if not a little less(7.5 seconds I really think).
And wow did it sound good once I broke that cam in.. http://www.youtube.com/watch?v=Kj-BaobBxF4

I linked my thread on your other thread but here some stuff from it to help you...



Stocker heads


Horrible exhaust ports on head



See the difference on the ported one compared to the stock one??


You need to really port these valve bodys good. So much that the exhaust valve can drop into the valve body, youll know what I mean when you have them off (this isnt my picture but its a good one to get a idea)




The torq spec are easy to get and ill link them for you later. Thats the easy part. The hard part is just the time it takes to port them. But is well worth it.

 

Yes take everything off to make it look like this except the timing cover and water pump, as I did that because I added a cam.





I added a cam, so if you do this is what your motor will look like when its tore apart

 

sounds real nice. idk how to do the lifters and cam though?

 

ooh my lanta. a motor that tore down honestly scares the crap outa me. will i ever get the timing right. will i loose one fricken bolt....the fear..lol

 

Dont fear that!! Put the nuts in bolts into zip lock bags and write on them with markers.. example is a bag labled intake manifold bolts. Another exhaust manifold bolts and so on.

Timeing is very easy to set up and theres a good proceedure to it that I know you can do.
Also that cam and lifters is just another option for max gain while its apart. That proceedure is also very easy and is in depth more on my thread of (cam instal q's) Remember this was my first attempt at tearing into a motor also and with help from ppl on this site it worked out for the best!

 

i may just make all this a winter project. i cant not drive my baby...lol ooh i just feel like ill be in over my heads. all my tolsl got stolen while i wa sin basic traning so im still building my collection back up..fricken people...lol

 

ive been wanting to do this but knowing that it takes time and this is my dd i will have to wait until i graduate in about a month

 

niiicebro. we should do it together this winter. duel projects and we can confer with each other and all that shtuff

 

Just find some different heads. Pick them up at a junk yard for like 20-50 bucks and off you go. Then you can do the whole assembly and such in a weekend.

 

good idea. theres a junk yard down there road imma check there tommorow..im sending you a PM btw

 

well i would go check but, ive notices that the yards around here are hustlers, asking 750 for a engine plus my engine, what kinda crap is that lol,

 

thats a BAD ripoff. lol

 

hell yea ha, its ok though, all this work on my car is exp. i want.

 

ok so i obviously need to remove the intake system but do i need to remove the intake manifold to remove the heads?

 

 

lol dug stupid me. i got down the the intake manifold. taking off all the connections and the lower and upper intake plentum thing. making slow but stedy progress lol iv been labeling all wires and hoses and all bolts are in labeled snadwish bags. i can see alot of grinding to be done just to the plentum or what ever it is. "YA HEAR ME? IM NOT AFRAID ANY MORE!"
lol ill take some pics soon brother. so i realy have to pull off everything? all my pumps and pullys?

 

wish i could do the project with you, but i got to go to school tommorow and its my only car

 

Thats awsome man, just take your time and youll be fine! Its easier just to take all the crap off thats arround the heads. You need to take off these major componets.

dizzy
Whole intake system and fuel rail(just lay the fuel rail to the side as you really dont need to take any of the connections off of it)
The alt, powersteering pump, ac(if you have it) air pump.
Just unbolt the ex manifold from the heads them self, no sence in taking the whole manifold off.
And I know your gonna have questions about the lower intake manifold and the coolent by pass think.(when you get that far let me know and ill shoot a video of how to clean that mess up and make it easy to put back together)

 

iv got the plentum off upper and lower part. im to lazy to take a pic right now but what im lookin at is the intake manifold and the heads...i BET taking them fricken exhaust manifolds off is gonna be a reaaaal crap job..lol

 

Make it easy on yourself and spray those bolts on the ex. manifolds with some pb blaster or something like that. Spray a ton of it on it and be carful when your taking the bolts out.

Yea since we have 3 intake parts, i just call them the upper, middle, and lower intakes. The lower one is easy to get off except the coolent adapter going into it, if you get that far just get that thing off. Dont worrie if you break the plastic tab as ill show you how to make it much better with a 8$ part from napa.

 

anything to do with exhaust, the bolts always come out easier when hot, sucks to work on hot parts but you don't break as many.

your bound to break one though, murphys laws.

 

I have no heat maby ill go buy a fricken benzo-torch or suin? think that will get it hot enough?

 

??? Just get a blow tourch or something of that nature. There very cheep at anyplace.

 

just run the engine for 5-10 minutes shut it off then take off the ex manifold bolts, usually that makes them come out very easy

 

His motors already apart

 

only the upper intake though right ? stick it back on. i always start at the ex manifolds.
if they are that tought to get remove them with the heads and get the bolts out on the bench. its usually easier once the heads are off the car

 

i think imma just get me a blowtorch from wallmart iv allready bung grinding away at my intake, so i dont feel like stoping to put it back together lol

 

For your intake use some sandpaper and such to smooth it out once you get the casting off of it. You can see in my pics that I did the same thing to mine. I applied 4 coats of blk heat paint then 2 light coats of clear coat and a year later its still looks good.

 

i want that duel snorkel system..it looks fricken sick. what kinda air intake gains would come from it vs stock? and how much dose it run you? and where did you get it lol..lot of questions

 

Its the best cold air intake you can get in my mind, for the thirdgens. Im not sure of gains but a 5hp gain wouldnt be overstated on a warmer day. And I really got it because it looked very nice and very clean for a intake system.

I got this from a local junk yard for 20 bucks! I dont think they relized how exspensive they could be as this one was in perfect condition even had the MAF sensor that was still good with it(gave the MAF sensor to a friend with a 2.8L).

Exspect to pay more then that though as I sold it for 50 bucks plus shipping a little while ago and really thats not exspencive for how nice of shape it was in. The one I had was really a perfect one, in perfect shape.

But call arround in junk yards and such and you might get lucky like I did and pick one up for super cheep. Also it is very easy to install as its a factory item.

Look on older thirdgens for this system(2.8L V6's and TPI V8's) Mine came off of a 1986 2.8L Camaro.

 

i have most fo a dual snorkle system that i wont be using.

if i rember right its missing the lid ,but the lower tray, the ducts and all of that are there.
ill take a look later today and let u know what i have if ur interested

 

k quick question since we are talking about CAIs, did the 91 Z28 come with the CAI stock? the guy i bought the CAI from says its the intake that came with the car, but it has no MAF sensor, what shall i do

 

lemme know what you want for that snorkal brother i just may take it. so i ended up needing my car before i got to the heads. so the intake was ported and polished then i ran the seafoam in the brakebooster vac line and wow. i see gains just from that?!?!?!?! idk. ALOT of carbon build up

 

i am jealous of you man, hopefully you come by idaho one day and help with mine lol

 

What part of the intakes did you port>>These? Because the biggest place I saw that could use some gasket matching/porting was the middle to lower intake, the TB to upper intake, and the lower intake to the heads.


This is before I cleaned the porting up


Front of upper intake where TB connects


Wait till you get into the valve bodies and port them then you'll see a good gain.

 

have to ask a 3.1 intake vs a 3.4 whats a nicer setup

 

3.4L but it can be a PITA to fit on a 2.8 or 3.1L engine.

 

i know why sorry for asking theres no spot for a dizzy

 

i cleaned up the valve body real good too. i got a top end gasket kit and put new gaskets on EVERYTHING lol. thorttle body. egr tube everything..lol the old gaskets were like.fricked..lol brittle as crap. i see alot better thorttle response. after and the seafoam treatment REALY helped i would suggest useing it to EVERYONE..if yall need a how to asfars as useing it on the intake and such just PM me. so just a testiment to the gains/restore of power. i went to the grocery store to get my sick wife some gignerale (which they didnt have) there was an old man checkin out my hot ride and go figure i stalled it....needless to say i needed to save face so i started it back up and got on it a little. and oh boy did i do a good smokeshow. lol made up for the embbarasement if you ask me lol..all in all, even porting and polishing the plentum and thorotle body, aswell as replacing ALL the gaskets and the seafoam treatment was WELL WELL WELL worth the time and LITTLE money it took.

 

oh and i gasket matched the lower and upper part of the intake aswell as the throttle bodyto intake, i actualy took ALOT off of the lower intake part. my looked just like yours in the pics when i was done. well. prolly not as good but i did my best haha.

 

what is the valve body? i may have worked it over but idk exactly what it is...

 

naw man, do what i did. i went and spent $30 on a min rotary tool (dremel) which came with like 40 attachments and just ropped it apart and did it. if i can do it ANYONE can lol imma puss when i t comes to taking apart my engine. nuthin to it but to do it. haha

 

The valve bodies are in the heads...these>

 

"Valve Guide"

 

yep, vavle body is in the trans.

 

opps i ment valve guide I dont think before I post sometimes. Sorry about that.

 

haha no worries brother i dont know the lingo either