SSMSPR


Let me guess, you must have let (paid) a professional to do this for you too, or did you already know everything about camshafts.

Well if you quit giving your non informal information all the time on the web, maybe you do have time to actually try something, unless you have enough money to pay professionals to do everything.

BTW, if someone is going to do nothing but give non informal information or complain how I should have paid someone to do my work, then don't bother. If congrats or help, please leave a post!

Thanks

D Moss

 

Well, its just comments like these tend to get on peoples nerves, he obviously knew he could have gone to a professional but like most DIY guys he decided to give it a shot himself. You never know until you try, how do you think Llyod or the other guys got started, it certainly was given to them as knowledge from birth.

For a first time porter those are some damn nice numbers and one thing i've learned from working on my car is the second time is always a hell of a lot easier with better results. I never knew how to change a clutch ti'll I got off my lazy *** and decided to get down underneath and see what it was all about. First time took me 4 days working just in the evening on it. Now I can change a clutch on my lunch break.

If I had listened to everyone everytime they told me to have a pro get it done, there would be no LT1 sitting in my thirdgen camaro. I wouldn't have a 3.42 geared posi rear end. My wiring wouldn't be working in my car. The list goes on and if I did listen I would be paying ti'll next year for thier services.

 

Well I see Both SIdes of this issue... I commend you on your DIY attitude.. I like most do all my maintnance, repairs ,install's all by my lonesome.. and am willing to help others with those as well.. Head porting is one of those things that don't come to you! And if you building a all business motor.. You don't want a less than mediocre port job taking all that money you spent and throwing it out the window.. your not talking to people whom are uneducated and unable to do things themselves.. I'm sure i can take a die grinder to my heads.. And i just might still.. But not for my stroker.. i'd be throwing my money out.. one you cut a port your can't really replace the material.. Take for instance a professional cabinet maker.. And you got you.. The DIY'r.. you read all the books you can on the cabinet making art/skill yada yada yada.. Make your cabinet's and it might look good .. But thenyou get the guy who does it everyday.. he knock's it out and the door's are aligned straight, everything mate's up and yada yada yada.. See where i'm getting at.. Some are happy w/ the DIY"r approach.. BUt those who want it done right the FIRST TIME! Gotot hose whom have know how and the years of experiance.... Your numbers look good.. Hopefully they work out for ya which i don't doubt that the bang for the buck factor is in effect. But for a max effort stroker.. Lil more involved.. Keep plugging away... NO matter how many people tell you how and what.. Nothing is going to beat the hands on experiance of porting, cabinet making, baking, etc..

 

*SHRUG* This may be a project car. He may have a extra set of heads lying around incase he goofed up giving him all the more reason to try for FREE himself before giving it to the hands of others. I mean, yes if you are maximizing for engine output that is not the time to DIY, but this seems to me like your usual DIY. Bored, nothing to do, decided to do something to his car that will help performance for free and not looking to be the best on the block, just wants to add some more UNF!

 

BTW.. Changing a clutch and Spark Plug's are all at different level's of challenge and pretty much it's pretty hard to mess those things up except for the common prob's like stripping out the head, putting the disk in backward's.. Its a plug and play operation etc,... Assembling a motor requires a lil bit more attetion to detail, same as changing rear gear's w/ setting pinion depth and such... All diff. level's of know how.. Porting is like a art! Can anyone draw the mona lisa? I'm sure there are people out there who can.. but they didn't just pick up a brush for the first time..

 

You'd be surprised how many goof ups there are. My point wasn't the difficulty of the matter, it was the point that most are afraid to do it. I don't consider porting to be an art, however your example goes with my argument at some attempt must be made before attaining quality.

 

Maybe I am overly optimistic, but I would expect better numbers than that. Comparing to my stock flow numbers, it lost in the .100 and .200 and only marginally better in the .300. It did ok in the .400 and qutie well in the .500, but peak isn't the only story. Also, a valve job alone is worth roughly 15cfm peak, even more if it is a profe$$ional one. I would like to see the velocity of the air as well, to make sure the shape of the port is still good. Note that I am NOT criticizing you. I don't have the time or the inclination right now to learn to port myself. I have read and read on the subject, and don't feel qualified that even if I did gain some cfm, that there would be an actualy gain, especially when you can get roughly 260 cfm that is KNOWN to make power for $600 including the vavlejob.

Dmoss- I'm curious, aren't you building a stroker motor? If so, what kind of power level are you looking for? Unless you are building a blower/nitrous motor, I wouldn't expect the car to make 400 rwhp or over. Granted I'm not saying it CAN'T be done, I just don't think it will happen with those heads and a sub 7000 rev limit. I'll wager around 385 rwhp peak, and a good bit of torque if it is a stroker. Good luck with it. Heads are the #1 reason I am NOT building a stroker right now. I'm gonna hold out for some AFR 215RRs or maybe a set of converted SBCs.

 

I thought about the stroker, but went with the 355.

400 rwhp is the goal. Nitrous is for sure.

Head porting is becoming a lost art. My dad done it, my uncle, alot of older folks that I know done it also. I tried it and won! It cost me $40 to port my heads and gain horsepower. I think that is an awesome bang for the buck for me. Not only that, but if someone else wants to go this route, I'll help them do it themselves too!

Not only that, but next time........

I'll tackle anything, and that's what I plan on doing wether or not people think it is for the professional or not. One day I could BE one.

Keep the good ones comming!

D Moss

 

Dmoss good job! I am also do all my own work on my car.I ported my heads and intake.Check out my sig.I will be re-doing my heads over the winter.I didn't even port the bowls yet. The Pro's make mistakes too. I have been doing machine work and Tig welding for 12 years and have seen all kinds of Pro's that do not impress me at all.Keep doing your own work it is more rewarding and definitely cheaper.

Rob.

 

97WRAITH-- I see you had some good results also. I'm looking to get down into the 10's, one way or another. (gas)

WRAITH, how do you like the 224/230? I know I wish I would have went bigger.

Anyway's, keep up the home porting!

Now onto the monster cam!

D Moss

 

Good job they are not pro numbers, but you learned something. I origionally did my own heads and ended up with 254cfm @.550 and 180@550 exhaust. The car ran ok but only put down 329 whp. I pulled the heads off and sent them to Lloyd Elliott. I got them back and the car was still slow. I finally found out that it was the crappy ed wright tune I had in the car. The car now runs extremely well for what it is. I'm totally happy with the LE heads but I wonder what it would have run and dynoed if it would have been tuned properly before.
Good luck with your heads.
Kory

 

I agree I think I will be installing a GM847 over the winter.Still trying for 12.0 with my current setup.Need to improve my 60 ft to high 1.5's.

Rob.

 

You don't have to guess...I already said I did. I thought this thread was about head porting? Are we talking cams too?
You made a decision to pick your own cam and port your own heads - congrats. I chose to let one of the most respected guys in the business do mine, with my input for what I wanted out of the car. I guess it comes down to how you choose to spend your time.

What is 'non informal information'? Is that 'formal' information?
You posted your information on a public bulletin board, and now you're perturbed that you have some responses that question your methods - cry me a river. You have flow numbers - good start. Do you know what they mean? Do you know what the air flow characteristics are? You don't just grab a grinder/dremel and go to town. Like stated earlier, there's more to this than just flow numbers in and of themselves.

If you don't like to hear (read) anything other than what you want to hear (read), don't respond to it. BTW, I wasn't complaining - it was a question. You answered it - I don't agree with it, but I certainly respect your decision and ambition.

 

Good job man.....I say if you want to take the time to try something new to enhance your on learning curve then go for it. Besides another set of stock heads can be bought for $150 if it doesnt work out.

I agree with Mindgame that there is more to good heads than just flow numbers, but a decent cleanup job is a good starting point.

 

cool, I did the same thing and am happy to have gained the exp. I did. now, when I do my next set, hopefully it will take alot less time and flow even better. I also didnt port to the limit, but I did reshape and slim down the valve guides. I only partially raised the roof too, I know there is more flow right there too. here's my flow #s.


Int. EXH.
.100 66.5 55
.200 124 105
.300 181 133.5
.400 221.6 157
.500 247 175
.550 250
.600 247.5 184


http://f1.pg.photos.yahoo.com/ph/iro...ss86/my_photos
to see pics of my port job

chris