How would the new Dart heads hold up to alot of boost??
11-18-2005, 02:39 PM
#1
How would the new Dart heads hold up to alot of boost?? Hey guys, I was just wondering on what would be a good head (obviously AFR but kinda wanted to see if there was a different route than selling my kidney) to hold up to alot of boost...I will be running a t88 turbo with aspirations of somewhere around 850rwhp...I have been looking at the Darts but I just need a head that is not going to pull away from the block...Thanks for your input
11-18-2005, 03:29 PM
#2
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You have to compare whether they have a thicker deck etc.
Plus I think Dart is only selling 66cc versions, so you'd need the customize the pistons to lower your compression ratio.
Plus I think Dart is only selling 66cc versions, so you'd need the customize the pistons to lower your compression ratio.
11-18-2005, 06:30 PM
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Originally Posted by Pro Stock John
You have to compare whether they have a thicker deck etc.
Plus I think Dart is only selling 66cc versions, so you'd need the customize the pistons to lower your compression ratio.
Plus I think Dart is only selling 66cc versions, so you'd need the customize the pistons to lower your compression ratio.
Either way they look like a good value.
11-18-2005, 06:50 PM
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You might be right John. I've never personally seen the new Dart heads, I was just baseing the 1/2" statement on what I thought I had read in the Dart thread over in the internal forum.
11-18-2005, 07:16 PM
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How about 62cc's on both 205 and 225's
Someone posted .550" on the deck.
Look at Dart's flyer. They look thicker than OEM (to me)
Maybe a little port cleanup, along with opening the chambers....
Also...if they ever get released...
Someone posted .550" on the deck.
Look at Dart's flyer. They look thicker than OEM (to me)
Maybe a little port cleanup, along with opening the chambers....
Also...if they ever get released...
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11-18-2005, 11:08 PM
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The Dart head is made of 356 material and has a nice as cast port design. It would be a good choice for a forced induction car. I will be taking off the one's on my dyno mule on Monday morning. I will look at the deck and post later.
Kurt
Kurt
11-19-2005, 01:37 AM
#9
Well as far as the 62cc goes I can have the heads massaged a little and I'm also going to be running a complete aftermarket rotating assembly so I can choose the pistons right for my application...i'm shooting for somewhere around 8:1 to 8.5:1 cr so that I could run somewhere around 10psi on the street and not worry about the big bang... The only concern of mine with the darts are the material strength and the deck thickness so that they won't pull away...i will be running head studs too which should help but it's always good to buy a good product than to buy a piece of junk and try to reinforce the hell out of it...thanks guys for your reply I didn't think there would be so many by now but it's nice to see that questions don't get left unnoticed... 
The only concern of mine with the darts are the material strength and the deck thickness so that they won't pull away...i will be running head studs too which should help but it's always good to buy a good product than to buy a piece of junk and try to reinforce the hell out of it...thanks guys for your reply I didn't think there would be so many by now but it's nice to see that questions don't get left unnoticed...
11-19-2005, 03:03 AM
#10
I've been reading a little on these heads and they look better than stock castings...Here is the link to their article on them but it still doesn't mention the deck thickness...http://www.dartheads.com/manager/uploads/LS1Flyer.pdf
Last edited by 98turbls1; 11-19-2005 at 05:49 AM.
11-19-2005, 09:13 AM
#12
No it's not the head gaskets blowing, it is the head actually pulling away from the block under extreme pressure that is my concern...I'm just seeing if there will be that much more of an advantage to run the darts vs. the stock castings...If there's not I will go ahead and get the AFRs but I just want to see what will be the best
11-21-2005, 03:07 AM
#17
I'm assuming that it could be from detonation but what I'm concerned about is the head actually lifting away...A tune can't help this because it is because of too much pressure and the head deck isn't thick enough...I'm going to try to research all of the aftermarket head decks and compile a chart to be able to compare...I think this would help significantly...Thanks everyone for you input...it's being really helpful...
11-21-2005, 06:35 AM
#18
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Don't detonate and you shouldn't be lifting the heads (unless you're planning on running like 100 psi boost), it's that simple. Of course the thicker deck is always a plus though...
If you're that concerned about it get in line for a World Products 6 bolt/cylinder block and heads.
If you're that concerned about it get in line for a World Products 6 bolt/cylinder block and heads.
11-21-2005, 07:30 AM
#19
Yeah i could always do that but that setup would let's just say be expensive!!! Although I could maybe build my engine and see how much it can make and save up for that setup with 427ci and be making crazy power @ 10psi on pump gas...that thing would be sick!!! 
