I just got my heads flowed. Here it is

INTAKE lift/cfm

.100/ 63
.200/ 129
.300/ 186
.400/220
.500/243
.600/243

EXHAUST

.100/ 45
.200/ 96
.300/ 131
.400/ 163
.500/177
.600/ 185

I don't think that these was too shabby. This is with stock valves and a 3 angle valve job, and myself doing the porting.

Thanks

D Moss

 

Definately not to shabby.

Good job.

 

Not to be a jerk, but why wouldn't you have them ported by a professional and really make the most out of the rest of the combination you're putting together? I realize it's not cheap, but well worth the expenditure IMO.

 

because then it isn't MY motor.

I could just go buy an engine out of a crate somewhere that is promised 600 hp, take out a loan and pay for it the rest of my life and support the professionals. That to me isn't worth the expenditure IMO. But really, how do professionals get to be professionals, I don't think it is by paying someone else to do their job.?

Not only that, but for a first time head porter, I didn't see where my head flows were all that far behind others that paid a lot of money to have theirs done. Plus I didn't grind the valve guides
down to the roof of the runner either, which sould be good for some cfm also.

I'm learning. Keep em comming.

D Moss

 

Good job man. I call it "Budget" by the way, and there's nothing wrong with taking a chance at doing it yourself. Hell, personally, I prefer it that way.

 

Thanks Darkhorse.

D Moss

 

What size did you work the throat area to?
What is your minimum cross section area?
What are the seat angles?

Could have a whole list of questions here that address subjects more important than flow numbers. You can't really appreciate the importance of something other than flow numbers until you've bolted together an engine with a set of heads that outflowed the previous set, only to go 3-4 tenths slower down the track. I've been there and no amount of tuning could get me back where the previous combination was. Datalogs showed that the car was accelerating slower at each shift regardless of the changes I made. Without starting from a clean slate, I wasn't going to be competetive anymore.

If it's any consolation to you dmoss, I build my own stuff. The sensitive stuff, I leave to a professional who does this every day of the week and then talks about it when he gets home to his wife. My job is security analyst/programmer, all my education was spent learning about my trade. I go home and I study, I stay on top of things related to my craft. I don't have time to buy a flowbench and learn to port heads that will make power.... so I go to the guys who've been there/done that and have the track record to prove it.
So I pay the pro to do the port work, then I do all the clearance checking and assembly. That's ok, I still built the motor. Hell, if we're going to get technical about it... to truly build your own stuff, you should be casting and machining your own heads, intakes, blocks, grinding your own cams..... we would really be the artisans then wouldn't we.

Doesn't look like you're reaching for the stars here. Your head flow looks like a mild cleanup job but your other thread states you are looking for a "big" cam and the power potential that comes with it? I wish you luck, because I think you are going in the wrong direction. Your money (the majority of your budget for the build) should go to the cylinder heads, so we skip home porting right there.

More to it than flow numbers.....

http://www.rehermorrison.com/

Go to tech talk and read article #16, flowbench fallacies.

David Reher must know what he's talking about.

-Mindgame

 

What size did you work the throat area to?

same as the seat diameter.

What is your minimum cross section area?

I have no clue. tell me how to measure it and I'll tell ya.

What are the seat angles?

I'll find out from my machinst.

D Moss

 

Congrats on tackling this yourself...excellent results for a first timer.



-Matt

 

Thanks Matt!

 

Not to be a jerk either, but why don't we shut down this board and leave the modding and repairing of our vehicles to the professionals...

 

I agree with Mindgame, I'm all about buttoning everything back up, but the head porting is best left to a pro - for me.

But on a personnel level, I think it's great that you're diving into head porting and learning all you can about it. Maybe you'll build a name for yourself and who knows from there!

Good job

 

Was that your initial attempt?? Either way, nice job, they'll definitely add some scoot to your vehicle.

Personally, I'm a nut and bolt guy (I'll patch things up), but I'll leave the porting to the pro's. You at least can say that you did everything on your car, which is very admirable. Nice job!!

 

I'm hope you recognize the difference between porting cylinder heads for maximum power and changing an optispark, because I sure do. BTW, my comment was not a condemnation.

Contrary to your suggestion otherwise, I did not imply that folks should retain professionals for everything. While dmoss69's actions are admirable, I would have (and I did) retained the services of a reputable head porter, especially if you consider the context of the other posts by him regarding camshaft selection.

To each his own though. Like Mindgame, I don't have time within the restrictions of my own profession to become a proficient and effective cylinder head porter.

 

Thanks yall!

The way I see it, the professional's make enough as it is, so let me do something that may be benifitial to us, and heck, who knows, maybe if I learn something, we non professionals may actually learn something by "sharing" information, somthing that is not seen much on here with technical stuff. Most of the really technical stuff is "hush hush", or you shouldn't do that, or leave it to the professionals, yet the whole time they already have or know what you're looking for.

If you don't believe that, read this....
http://web.camaross.com/forums/showt...5&pagenumber=1

I'm all about the DIY guy, and if I can do it right and cheaper, I'm going to do it. And I'll incourage everyone else to do the same, and if you can't, or insist that I do it, then I'll charge ya (not for you house though) Oh yeah, don't forget the budget $2000 intake manifold either.

FASTBIRD 93--Was that your initial attempt?? Either way, nice job, they'll definitely add some scoot to your vehicle.

Yes, this was an initial attempt. And this vehicle does scoot, I just want it to scoot better.

PASKY--Not to be a jerk either, but why don't we shut down this board and leave the modding and repairing of our vehicles to the professionals...

That's what I was thinking also.

Thanks

D Moss