Hey Eric, Tim here, ya know i REALLY dig this critique/flow service you offer, its quite educational, and we learn something EVERY TIME!!.....homie did pretty good overall.....he shud be happy, i just enjoyed watchin this one, neat info......super cool, TY sir, hope head owner knows he aint YOU, but he didn't do to shabby......maybe he's listened to you b4, and tried his best to do what you reccomend....i dug the whole vid!!!.....PEACE my brother!!
Eric I think it’s great that you take the time to help people out and show them what they need to focus on. Your work is amazing and your attitude is great. Love these types of videos.
And after learning that a rougher texture makes a port behave smaller I'm going to try going extra rough on a set of heads that are considered pretty large for the size engine. Certain parts smooth of course, like the short turn.
🔔😎🇺🇸 21:30 It's often been said... 80% of the gain is from the first 20% of your time. Going for the rest of the 20% gain takes TIME. And... The greatest port restriction is the partially closed valve. 🤔🤔
Great video! Your approach, honesty and critique are spot on and treats the individual with respect, and as a MATURE learner. You will learn more from failure then you will success, if you are willing to learn. Some of the comments I see on this video are just plain disrespectful and small minded. Small mindedness and poor manners are why you will not learn from your failures. Eric... Thanks. I appreciate your polite candid critique, your willingness to share tradecraft, and humility to understand others have different opinions, or may know more than you. This video in particular gave me pointers on how to check the work of the people I higher to do the performance improvements I cannot do on my engines. Keep the videos coming!
Fantastic video. The last time I ported heads, I was reading a magazine to get a general idea. When I did the heads, I always did the intake manifold at the same time. I did 302/351 heads with stock/Cobra intakes and I would reshape the first runners with the most length and curve by using Metal Lab as a filler to keep the runner diameter the same. Didn't know what I was doing but the good news is that with a stock head and intake port, it was very obvious that the cars made good power as the walked away from the car they lost to the week before.
Thank you. You did my heads. Great job. Even though I decided not fix some of the bowl issues it still competes with this head . And he went to the bigger valve. Mine out flow at the high end and beat it down hard on exhaust. As I told you before I will use you again. Soon too.
I always use straight Newen/Serdi carbide pilots for seat cutting. It eliminates all the problems of tapered pilots. Although tapered pilots can be used if used properly. I never push in tapered ones hard. A light touch of tip of the finger should do. As pushing a tapered one hard in will make the pilot being bent so the seat runs out of centre.
I just found your channel, and… awesome. Your porting info/critique, seems pretty spot on. I have built lots of motors, and have been a mechanic for a long time. I will be subscribing, and will definitely be checking out other vehicles. I have every belief that with the attention to detail in this porting critique, I will definitely be looking for a video about why it’s so important to also port match an intake to heads as well. Good stuff!
Thank you Eric for your detailed explanation on the porting! I'd like to hear you opinion about port floor. Is there any occation you'd justify lowering the floor of the intake?
That’s some very good information. It would be interesting to see where the flow starts dropping off past .600 lift. While that’s not desirable for a full race job, there’s a lot of street applications where maximizing the flow at or before.600 is a good thing.
That was really good Eric. I think you were extremely fair and I hope your customer appreciates the wisdom you tried to impart. One question about throat sizes, is there a rule of thumb of how much larger the bowl should be vs the throat? Say 5% 10% etc? Thanks!
Hey Eric I have a question about a set of cylinder heads I ported plus a good valve job to complement the throat bowl and chamber with my antique and I mean antique buddy hall toledo orbital seat grinder I had to work some magic . Anyhow they are ford racing / motorsports svo e303 head tbt the head that should have came on fox and later mustang 5.0 my question to you is have you ever ground on these they are made out of some serious spotty aluminum hard as he'll in spots vise versa I cross grind lift grind cut alot with the aluma burr also cross cut carbide with a 60 grit finish in port and burr finish buy throat but looks uneven like I never cut a set of heads in my life I know you won't remember me but we met threw a customer of both our some time ago love the Chanel thanks for your knowledge
Man wric. You would cry to look at a stock set of dodge 318 heads just warming up a 2bbl 318. Mild cam, ported intake. Ported heads headers. And 2bbl carb. Running about 9.3 static compression now.
These heads will go 295/300 with a 8mm stem, 7.3mm undercut. 2.02 valve at 90.5% . Those are the enforcer valves. Ported to 205cc , checked/poured. I use spiers old manometer and pst plates,calibrated bench,real numbers. 4 angle vj and some porting. Out of the box 260/270cfm
Gretat job with the review. I think that’s super helpful to the owner of the heads and any other amateur porters learning or wanted to do a little porting on their own. And it’s always better to go a little less with porting then too much which is what you said.
I just did a set of these and after initial measurments decided to keep the 2.02. I dont see why i would step up valve size before i could get decent bowl to valvesize percentage. Only thing is that little dip on the short side is not completely removed. I left the bowl at 96.5% and did not go through the bolt hole
I have a question for you. On a stock car motor with stock heads and 2 bral carburetor are you better off going bigger on the exhaust valve ? Thank you for your video.
Just remember, these tiny tiny details, like the most slight step you can barely feel with your nail in the chamber...... It's doing so little of an improvement it doesn't matter. People get way too crazy with these tiny improvements. Do your port work, give it a little tickle around the place to clean it up, then put them on your engine. Don't spend an additional 2 days fucking about
have you heard of are know larry meaux from louisiana i think the one of the best head porting and race engine builder ever watch big chiefs vrds hes using them on jackies car i personally know him also look up hard head racing my brother in law that recenly passed away
You ever port turbo diesel engines, or review turbo diesel heads? I've got an om606 I'm thinking about porting, which is a high tumble flow rather than high swirl (which is modern diesel head style).
@@WeingartnerRacing 🥲 okay lol. Always worth asking. The way this engine works is much more similar to a turbo gas engine... Just 22:1 compression ratio with a prechamber.
It's just my guess but I don't see why that would matter. I believe his percentage numbers were "general" numbers and I would guess that percentage ratio is flowed without valves to evaluate the port itself....but I'm not an expert by any means.
You don't test stuff you don't have fixtures for do you? I want to get a head flowed that was done for me many years ago that I've never installed, but I don't know what the flow is, so I can't begin to try and spec out cams. It's a DOHC 4-banger.
Metal reflects differently under lighting in camera. Sometimes gold looks like silver. And the opposites. Sometimes silver or just cast iron that’s been etched will look gold. Or brass.
