Theoretical new setup, gains?
11-20-2007, 05:25 PM
#22
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I bet blackhawk 131 think's my 1 3/4 lt's and 3" mid's are way overkill
blackhawk131 READ up . Before you post up
It will help you to not look like a total dumb ***
But then again maybe you are!!! dunno
blackhawk131 READ up . Before you post up
It will help you to not look like a total dumb ***
But then again maybe you are!!! dunno
11-20-2007, 05:41 PM
#23
What kind of HG did you use? The DCR calculator I have is from PianoProdigy and it's damn easy to use. If you are on a factory gasket of .052 (that's factory, right?), you're at what looks to be 8.18:1 on DCR. If you even slapped on a .040 you'd be at 8.43:1, but I can't guarantee anything in terms of PTV 
I was told that a thinner gasket is preferred to milling to keep the quench tight. If my logic is flawed, someone feel free to step in and correct me, thanks.
-J
I was told that a thinner gasket is preferred to milling to keep the quench tight. If my logic is flawed, someone feel free to step in and correct me, thanks.-J
11-20-2007, 06:24 PM
#24
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What kind of HG did you use? The DCR calculator I have is from PianoProdigy and it's damn easy to use. If you are on a factory gasket of .052 (that's factory, right?), you're at what looks to be 8.18:1 on DCR. If you even slapped on a .040 you'd be at 8.43:1, but I can't guarantee anything in terms of PTV I was told that a thinner gasket is preferred to milling to keep the quench tight. If my logic is flawed, someone feel free to step in and correct me, thanks.
-J
I was told that a thinner gasket is preferred to milling to keep the quench tight. If my logic is flawed, someone feel free to step in and correct me, thanks.-J
thank you! yeah I finally figured it out with the help of Patrick G, my dumb *** had a decimal in the wrong spot.
hmm putting new head gaskets on is preferred to milling? that also keeps your PTV up higher correct? maybe I'll do that and have the heads cleaned up a bit. that'll bump my SCR to 11.2:1 also....I should see some decent gains from that correct?
Chad
11-20-2007, 06:39 PM
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thank you! yeah I finally figured it out with the help of Patrick G, my dumb *** had a decimal in the wrong spot.
hmm putting new head gaskets on is preferred to milling? that also keeps your PTV up higher correct? maybe I'll do that and have the heads cleaned up a bit. that'll bump my SCR to 11.2:1 also....I should see some decent gains from that correct?
Chad
hmm putting new head gaskets on is preferred to milling? that also keeps your PTV up higher correct? maybe I'll do that and have the heads cleaned up a bit. that'll bump my SCR to 11.2:1 also....I should see some decent gains from that correct?
Chad
I would say with the tighter quench .And the bumped scr she should run strong
glad to see you got some good info on what direction to go.
make sure you use the copper spray with the .040 gasket's
good luck
mike
11-20-2007, 06:39 PM
#26
Well I would think that either milling or new HG would decrease PTV, because it seems that either way, you are putting the valve closer to the piston, you're just going about it in two different manners. I would think that bumping up the compression should give you some more power, and also better throttle response I'd imagine. I'd check PTV with clay if you end up changing the HG just to be sure, would hate to tear it down then have some catastrophic... thing 
-J
-J
11-20-2007, 08:07 PM
#27
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Smaller runners allow for mean street response, and you'll be showing the 
of your car to those w/ top-end setups on the highways.
11-20-2007, 09:12 PM
#29
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Yes, afrs are the champs. Hopefully homeslice listens up about how these heads aren't overkill and he's crying about the embroidery comment I made. Yeah I'm a dick at times, but that's the only way these tools pay attention sometimes.
11-21-2007, 12:03 AM
#31
To the OP:
Looks like your best bet will be to check you P/V clearance now and see how much room you have to play with. You would be best to start with thinner gaskets, and the tighter quench increases 'squish' in the chamber as the piston reaches TDC, making the engine less prone to detonation.
Also, what ICL is your cam installed on? I see it has a LSA of 112, but the advance makes a big difference in DCR (based upon IVC). Using the numbers you provided (62cc, .010 positive deck, 62cc chambers) I get a SCR of 11.44with .040 thick gaskets. I may have an error because the PP calculator does not allow for entry of the head gasket volume, and 4.100 seems rather large for the bore you are running.
Based on that, 112 ICL gives me 8.51 as the DCR, which is about as much as you'd want with 91 octane pump fuel. Moving up, 110 ICL gives 8.66 DCR, and 108 ICL gives 8.82. That last figure is likely to high for 93 octane without a really good tune, but you could go up to a .045 gasket and bring it back to 8.70.
Hope I'm not mixing numbers here & Good Luck!
Looks like your best bet will be to check you P/V clearance now and see how much room you have to play with. You would be best to start with thinner gaskets, and the tighter quench increases 'squish' in the chamber as the piston reaches TDC, making the engine less prone to detonation.
Also, what ICL is your cam installed on? I see it has a LSA of 112, but the advance makes a big difference in DCR (based upon IVC). Using the numbers you provided (62cc, .010 positive deck, 62cc chambers) I get a SCR of 11.44with .040 thick gaskets. I may have an error because the PP calculator does not allow for entry of the head gasket volume, and 4.100 seems rather large for the bore you are running.
Based on that, 112 ICL gives me 8.51 as the DCR, which is about as much as you'd want with 91 octane pump fuel. Moving up, 110 ICL gives 8.66 DCR, and 108 ICL gives 8.82. That last figure is likely to high for 93 octane without a really good tune, but you could go up to a .045 gasket and bring it back to 8.70.
Hope I'm not mixing numbers here & Good Luck!
11-21-2007, 12:09 AM
#32
BlackHawk131,
Sorry to say, but you are rather misinformed in many of your statements. Sadly, the money you invested in the NW90/FAST90 setup would have made healthy gains had you instead invested in one of the proven 5.3 or LS6 ported head combo's available. There are many H/C 224 cars out there running 420+rwhp. For that matter, there are some cam only TR230/224 making over 400rwhp without a 90/90.
Sorry to say, but you are rather misinformed in many of your statements. Sadly, the money you invested in the NW90/FAST90 setup would have made healthy gains had you instead invested in one of the proven 5.3 or LS6 ported head combo's available. There are many H/C 224 cars out there running 420+rwhp. For that matter, there are some cam only TR230/224 making over 400rwhp without a 90/90.