Ive used a couple of sets of profilers. To get the arms to line up as close to perfect as possible, Ive found the adjustable plates and a .150 offset intake rocker are required.
Hey Eric, Tim here, i'm with u on the thin intake divider......i've had issues with my ported Kauffmans On this exact same issue......its a bit thin...... and i'm just NA, no boost, no spray.......my divider is about .120 maybe .125......had to change intake gaskets twice.......BOTH times, the divider wasn't happy.....didnt rip, but pushed into other cyl intake port.......i'm with you, if i cud stick with like a .187 Divider, that wud maintain seal better......however, i found an intake gasket that works, from TIP (Tin Indian Performance) is port matched already, and seems to seal well.......i just like the thicker divider like you.......just sayin, so other folk can learn, NOT do intake gaskets 3 times......TY SIR!!!!...still one of my fav chanels!!!....between YOU, VIZARD, and UTG.......i've learned ALOT more than i didn't even know, i didnt know, ya know??.....haha, PEACE to you sir!!
Thanks Eric. Nice vid and explanation. Seems to be so much room to go up on the port. Why hasn't somewhat made a cathedral like port and matching intake for the SBC. Avoids the pinch and offset rocker problems too. We have raised runner exhaust, why not raiser runner intake?
I was wondering if anyone has tried knife edging the paired intake ports where your talking about sealing, and used an open intake plenum that both the paired runners share, instead of two runners there’s just one common runner that both ports share. That would open the push rod pinch, heck you could grind it out, and knife edge it deeper into the runner kinda like you see on 4 valve heads. Just was wondering if you’ve seen that, or would it be a total dud? Just trying to think out side the box a little.
Back In the day they would center punch the middle of the intake runners to get the gasket to seal. I'm thinking of a very small groove and making the intake slightly smaller for any error? Thanks for the videos.
Hypothetical question - if the valve lap area (contact area) is too small, would it mean the engine would be more prone to knock? Because the valve gets hotter? It's just my speculation, I'm dealing with a scooter engine that's very prone to spark knock (detonation) and this is about the last thing I didn't rule out.
Are you a trick flow dealer ? looking at the 61417801 for LA mopar .408 stroker with a comp extreme energy #20-812-9 roller cam 230/236 and ,541/537 lift.
@WeingartnerRacing I have a set of Aluminum Dart Conquest that I bought brand new about 20 ish years ago. I believe that they are 220cc intake runners. I don't know how they flow but when I changed from stock 1980ish factory iron heads to the Dart Conquest I picked up almost a second in the 1/8 mile. The motor is a sbc 355, 11:1 compression with a Lunati bracket master 305 camshaft. Lol it really needed the heads 😅 🤣. It went from 8 seconds to 7.10 in the 1/8 th. It's just a street car. I have commented on one of your other videos about the heads. I'm thinking about getting you to port them for me.
Ive used a couple of sets of profilers. To get the arms to line up as close to perfect as possible, Ive found the adjustable plates and a .150 offset intake rocker are required.
Reminds me of DART's ye ole' original SHP heads after serious porting, in a way. By the flow numbers. Great video Eric, very fun stuff here!
Always appreciate the detail and analysis of the heads you test.
There is a lot of small things that change the outcome, thanks for sharing, all the best to you and your loved ones
Eric thanks again for all the info. Looking forward to the next video. This one was good.
nice info. I'm voting for the afr heads if I were to use them as
Hey Eric,
Tim here, i'm with u on the thin intake divider......i've had issues with my ported Kauffmans On this exact same issue......its a bit thin...... and i'm just NA, no boost, no spray.......my divider is about .120 maybe .125......had to change intake gaskets twice.......BOTH times, the divider wasn't happy.....didnt rip, but pushed into other cyl intake port.......i'm with you, if i cud stick with like a .187 Divider, that wud maintain seal better......however, i found an intake gasket that works, from TIP (Tin Indian Performance) is port matched already, and seems to seal well.......i just like the thicker divider like you.......just sayin, so other folk can learn, NOT do intake gaskets 3 times......TY SIR!!!!...still one of my fav chanels!!!....between YOU, VIZARD, and UTG.......i've learned ALOT more than i didn't even know, i didnt know, ya know??.....haha, PEACE to you sir!!
Thanks!
Good information as usual keep it up.
Thanks Eric. Nice vid and explanation. Seems to be so much room to go up on the port. Why hasn't somewhat made a cathedral like port and matching intake for the SBC. Avoids the pinch and offset rocker problems too. We have raised runner exhaust, why not raiser runner intake?
Simple answer, the 23 deg SBC is still a cash cow for the aftermarket. Creating something simple and cheap does not generate revenue.
I was wondering if anyone has tried knife edging the paired intake ports where your talking about sealing, and used an open intake plenum that both the paired runners share, instead of two runners there’s just one common runner that both ports share. That would open the push rod pinch, heck you could grind it out, and knife edge it deeper into the runner kinda like you see on 4 valve heads. Just was wondering if you’ve seen that, or would it be a total dud? Just trying to think out side the box a little.
Have you flow test the NKB 200 that Skip white performance sells. Looks interesting on price and flow that's claimed. Thanks
It’s the same as the assault head that I did a video over.
OK thanks
Back In the day they would center punch the middle of the intake runners to get the gasket to seal. I'm thinking of a very small groove and making the intake slightly smaller for any error? Thanks for the videos.
Your flow numbers looked very similar to the dragonslayer heads you have shown
Would it mean that shaft mount rockers for regular valve-spacing is a no go for these?
They take a special stand
Is that a crack between the two center exhaust ports on the head deck surface?
Great video
Yea what about dart 230cc. Ive got a set im going to use on my turbo build id like to know what they do
Those are as cast.
Hypothetical question - if the valve lap area (contact area) is too small, would it mean the engine would be more prone to knock? Because the valve gets hotter? It's just my speculation, I'm dealing with a scooter engine that's very prone to spark knock (detonation) and this is about the last thing I didn't rule out.
Are you a trick flow dealer ? looking at the 61417801 for LA mopar .408 stroker with a comp extreme energy #20-812-9 roller cam 230/236 and ,541/537 lift.
I’ll trad you my AFR 220 competitions. And what ever the difference is. If there more appropriate for my 414
These aren’t mine.
Do you deduct the radii on your CSA measurements?
No
How does the cost of the cnc heads compare to an as cast ported by you?
Have you ever ported a SB2.2 head??
Why don't you ever do or have any videos on Dart heads.. Any of them and do a comparison.. like all your other videos 🤔🤔🤔
They don’t come in.
@WeingartnerRacing I have a set of Aluminum Dart Conquest that I bought brand new about 20 ish years ago. I believe that they are 220cc intake runners. I don't know how they flow but when I changed from stock 1980ish factory iron heads to the Dart Conquest I picked up almost a second in the 1/8 mile. The motor is a sbc 355, 11:1 compression with a Lunati bracket master 305 camshaft. Lol it really needed the heads 😅 🤣. It went from 8 seconds to 7.10 in the 1/8 th. It's just a street car. I have commented on one of your other videos about the heads. I'm thinking about getting you to port them for me.
the green note cards are way better for visibility
Those prices make MBE heads sound like a deal.
You must have never looked at the price of there heads that are 5k plus
lol that’s a joke right?
Never mind
100% these heads need adjustable guide plates to get the rockers on center.
Noisey ?
At the beginning
PROFILER ALLOY IS BLOODY HARD,STRONGER HEAD BECAUSE THEY MIX THEIR OWN ALLOY IVE BEEN TOLD... SORT OF THE FAMOUS LAZANO CHAMBER SHAPE..