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Dart 225 heads ,any pointers welcome.

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Old Dec 17, 2015 | 01:35 PM
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Default Dart 225 heads ,any pointers welcome.

I'm replacing my mild ported 241 heads with a set of freshly reworked Dart heads. 225 runner 2.05 int.1.60 exh
Never been milled ,62 cc chambers.
These are going on an lq4 bottom end with an f14 112lsa cam
I want to up my compression by going with a .040 gasket and maybe mill to 60 cc but want to know more about these heads.
Do they start off with more or less ptv clearance then stock?
My 241s have been milled .018 and use a stock gasket. Just wonder before i cut the heads how they do and also does an lq4 dish help with ptv clearance?
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Old Dec 17, 2015 | 09:06 PM
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I am using the 225cc Dart right now on a 383 and milled them .025, down to 58 cc with 10 cc dished pistons the SCR is 11.4 with Cometic .040 3.970" head gaskets, my cam has .623" lift and I had plenty of PTV clearance. These heads need a little work done in the bowls and a good valve job to make good #s hopefully that has been addressed with yours, in as cast form they're so so.
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Old Dec 17, 2015 | 09:52 PM
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Originally Posted by 64post
I am using the 225cc Dart right now on a 383 and milled them .025, down to 58 cc with 10 cc dished pistons the SCR is 11.4 with Cometic .040 3.970" head gaskets, my cam has .623" lift and I had plenty of PTV clearance. These heads need a little work done in the bowls and a good valve job to make good #s hopefully that has been addressed with yours, in as cast form they're so so.
They actually went to the shop for a valve job and I am buying them this week. Then taking them to the guy who ported my 241s for some tweaks.
I am thinking 58-60 cc also i need that compression
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Old Dec 18, 2015 | 07:04 AM
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Dart had some issues with valve guide clearance and machining depending on when the heads were originally made. If you are taking them to the shop for work, and plan to use stock rockers, might be worth replacing the guides with PM guides like you have in the 241's.
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Old Dec 18, 2015 | 07:38 AM
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The Dart heads, once worked over some, are extremely great heads. I think you've made a good investment.
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Old Dec 18, 2015 | 07:59 AM
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Originally Posted by vettenuts
Dart had some issues with valve guide clearance and machining depending on when the heads were originally made. If you are taking them to the shop for work, and plan to use stock rockers, might be worth replacing the guides with PM guides like you have in the 241's.
I will get them checked. Thanks
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Old Dec 18, 2015 | 08:03 AM
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Originally Posted by Rise of the Phoenix
The Dart heads, once worked over some, are extremely great heads. I think you've made a good investment.
For $1100 with new valves and 5 angle vj, i couldn't pass them up.
I was looking to get some from Flowtech or AI in February. This deal jumped at me and had to act.
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Old Dec 18, 2015 | 10:02 AM
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You could always send them off to AI for their CNC porting. I have the Dart/RHS AI CNC ported heads, and they are really great heads.
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Old Dec 18, 2015 | 11:21 AM
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Originally Posted by Rise of the Phoenix
You could always send them off to AI for their CNC porting. I have the Dart/RHS AI CNC ported heads, and they are really great heads.
Yours are the 223 cc that start as 205s.
These are 225s and really just want a little touch up on this motor. Then send them to Frankenstein or Ai if i go wilder with next build .
But anything is possible
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Old Dec 18, 2015 | 11:42 AM
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Originally Posted by AINT SKEERED
Yours are the 223 cc that start as 205s.
These are 225s and really just want a little touch up on this motor. Then send them to Frankenstein or Ai if i go wilder with next build .
But anything is possible
You are correct. You could also send them off to Ed Curtis at Flowtech Induction. I remember a thread over on the GTO forum where he hand worked some Dart heads with one of his custom cams and the car put down some crazy power.
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Old Dec 18, 2015 | 12:02 PM
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Originally Posted by Rise of the Phoenix
You are correct. You could also send them off to Ed Curtis at Flowtech Induction. I remember a thread over on the GTO forum where he hand worked some Dart heads with one of his custom cams and the car put down some crazy power.
Good idea. I actually was talking with him about a set of darts but these come along.
I will ask him about touching them up.
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Old Dec 18, 2015 | 12:14 PM
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Originally Posted by AINT SKEERED
Good idea. I actually was talking with him about a set of darts but these come along.
I will ask him about touching them up.
He's a good guy and one of the most knowledgeable people on earth regarding heads and cam technology/theory.
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Old Dec 18, 2015 | 05:53 PM
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Originally Posted by Rise of the Phoenix
He's a good guy and one of the most knowledgeable people on earth regarding heads and cam technology/theory.
I got a text back from Phil at Ai. He has a program for them that finishes out to 232 cc.
Just under a grand is not bad. Waiting on a text back to see what they pick up , sounds like what i want though.
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Old Dec 19, 2015 | 06:53 AM
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Originally Posted by AINT SKEERED
Good idea. I actually was talking with him about a set of darts but these come along.
I will ask him about touching them up.
Ed is familiar with some of the guide issues that Dart had so you might be able to get more information from him if you speak with him. If the heads have already been worked, likely there are no issues anyhow. I ran their 205's when they first came out, I actually think I had the first set TSP got from Dart. Ran them for a couple of years and then had Tony Mamo hand work the chambers on some AFR 205's and sold the Darts after cleaning them up so they looked new.
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Old Dec 19, 2015 | 09:32 AM
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Originally Posted by vettenuts
Ed is familiar with some of the guide issues that Dart had so you might be able to get more information from him if you speak with him. If the heads have already been worked, likely there are no issues anyhow. I ran their 205's when they first came out, I actually think I had the first set TSP got from Dart. Ran them for a couple of years and then had Tony Mamo hand work the chambers on some AFR 205's and sold the Darts after cleaning them up so they looked new.
Was the darts much behind on power to the Afrs?
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Old Dec 19, 2015 | 04:22 PM
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Mine were as cast, so yes there was a difference. However, I changed the cam at the same time I added the AFR heads plus my tuner went from a DynoJet to a Mustang dyno so the actual numbers are lost in the shuffle. Car now totally screws now though. I would say the Dart 205's out of the box were about the same or slightly better than a set of 243's. That being said, there are a few builders who really liked the Darts. Ed was using them for a while, not sure if he still does. Bauer Racing also were using them and getting good results after working them a bit.
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Old Dec 21, 2015 | 07:43 AM
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A set of CNC ported Dart 205cc heads and a set of AFR 205cc heads are going to be damn near even as long as the person doing the Dart heads is reputable and has a good program for them.
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Old Dec 21, 2015 | 09:19 AM
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I will get with Ed after new years. I like the idea of Advance induction but not sure. A few tweaks to Darts seems to be all needed to make good power. The bump in compression by a point and tighter quench along with 50 more cfms should be a big jump so I'm not sure which route i want to take yet.

Id like to see flow chart on advanced induction Dart 232 cc heads
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Old Dec 21, 2015 | 09:38 AM
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I have the flow chart for the 223cc heads I have, but have never seen one for the 232cc heads. Hell, I didn't even know it was an option until you said something. They don't do a very good job of keeping their website updated because I know the price they have listed for the AI Dart/RHS 223cc heads I have actually went up in price.
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Old Dec 21, 2015 | 01:16 PM
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Originally Posted by Rise of the Phoenix
I have the flow chart for the 223cc heads I have, but have never seen one for the 232cc heads. Hell, I didn't even know it was an option until you said something. They don't do a very good job of keeping their website updated because I know the price they have listed for the AI Dart/RHS 223cc heads I have actually went up in price.
Waiting on replys .
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