Tony@AFR: G5x3 & AFR 205 *LONG*
03-29-2005, 10:04 AM
#21
Originally Posted by Tech
Oh yeah... the car is torn apart and he has 4 weeks to get it on the road before a NFME in Memphis.
If this is such a silly idea, why are so many people posting 460+rwhp numbers with untouched AFR heads and this setup? He wants mid to low 11s out of it (full weight).
Thanks Tony.
If this is such a silly idea, why are so many people posting 460+rwhp numbers with untouched AFR heads and this setup? He wants mid to low 11s out of it (full weight).
Thanks Tony.
Jason,
Who's car is this? I'd like to check it out in Memphis at the event. Also, mid-low 11's should be easy with a bad driver and no traction.
BTW, the GM MLS gasket is .060" compressed (about .006" thicker than the GM graphite one).
Craig
03-29-2005, 10:27 AM
#22
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Originally Posted by 1fastWS6
Jason,
Who's car is this? I'd like to check it out in Memphis at the event. Also, mid-low 11's should be easy with a bad driver and no traction.
BTW, the GM MLS gasket is .060" compressed (about .006" thicker than the GM graphite one).
Craig
Who's car is this? I'd like to check it out in Memphis at the event. Also, mid-low 11's should be easy with a bad driver and no traction.
BTW, the GM MLS gasket is .060" compressed (about .006" thicker than the GM graphite one).
Craig
The car in question here is my car. Jason has been a big help acting a the go between for me. I am a technical person. However I dont feel comfortable with all the variance on the answers that I have been getting. Its alot of money to spend and HOPE its right.
You guys are a big help! Thanks.Mike
03-29-2005, 11:44 AM
#23
I rented the ISKY flycutting tool from LG motorsports ($100) and did it myself. Once the heads are off it takes about 20 minutes for the first one (as you are double checking it and a little nervous with the first cut), then only about 10 minutes per piston when you have the cutting depth determined.
I would mill the heads and flycut the pistons. YOu will leave 10-20rwhp on the table if you don't with that big of a cam.
I would mill the heads and flycut the pistons. YOu will leave 10-20rwhp on the table if you don't with that big of a cam.
03-29-2005, 12:04 PM
#24
Originally Posted by gnx7
I would mill the heads and flycut the pistons. YOu will leave 10-20rwhp on the table if you don't with that big of a cam.
03-29-2005, 12:04 PM
#25
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I should say that I don't trust anyone in St. Louis to flycut with the pistons in the block (except possibly myself or this other mechanic). Everyone we talk to (ouside of LS1tech/Internet) says that's too risky.
03-29-2005, 02:28 PM
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Originally Posted by 1fastWS6
Jason,
Who's car is this? I'd like to check it out in Memphis at the event. Also, mid-low 11's should be easy with a bad driver and no traction.
BTW, the GM MLS gasket is .060" compressed (about .006" thicker than the GM graphite one).
Craig
Who's car is this? I'd like to check it out in Memphis at the event. Also, mid-low 11's should be easy with a bad driver and no traction.
BTW, the GM MLS gasket is .060" compressed (about .006" thicker than the GM graphite one).
Craig
03-29-2005, 02:38 PM
#27
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Just talked to AFR and LG about this setup. Basically I am going to flycut the pistons. AFR says to use a .040 Cometic gasket with a 59cc mill on the heads. It appears to me that we all agree that I should flycut to get the best performance/security. According to LG i will only have to flycut the intake 0.080. Does this sound right to everyone. Can anyone give me the size of the isky tool I will need?
AFR intake valve size is a 2.02 exhaust is 1.6
From what I understand this will give me 11.1 compression.
***still a newbie at all this so be easy on the flames ***
AFR intake valve size is a 2.02 exhaust is 1.6
From what I understand this will give me 11.1 compression.
***still a newbie at all this so be easy on the flames
*** 
03-29-2005, 03:30 PM
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Originally Posted by PewterZ28
Mike, don't expect 460 rwhp out of a stalled A4. Don't even worry about the dyno numbers unless they are really low. You should be able to run high 10's/low 11's with this set up. I'll be looking forward to lining up with you!
03-29-2005, 05:38 PM
#33
To me the answer is simpler. Use a smaller cam (say 224/224/114) that can get away without flycutting (but not without checking P-to-V), mill the head, and go for it.
The cam is maybe $400. You could sell the big cam or use it latter, when you feel comfortable with flycutting or plan a piston swap.
The cam is maybe $400. You could sell the big cam or use it latter, when you feel comfortable with flycutting or plan a piston swap.
03-29-2005, 08:17 PM
#34
Originally Posted by Tech
When are you headed down? There will be 6-8 of us caravaning down together.
BTW, good choice on flycutting, you'll be glad you did. If I were you, I'd rent the 2.05" tool in case you decide to switch to a larger valve head later on like the AFR 225. Are you sure you won't need to cut the exhaust valve side also?
Good Luck!
03-30-2005, 07:14 AM
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Originally Posted by 1fastWS6
We'll head down on that Wed. afternoon. I'm way over in the southwest part so I'll hjave to go a different route thru northern AR. Thanks for the offer though. Look for the blue '68 bird and come say hi. I'll look for your TA too. It should scream with that combo.
BTW, good choice on flycutting, you'll be glad you did. If I were you, I'd rent the 2.05" tool in case you decide to switch to a larger valve head later on like the AFR 225. Are you sure you won't need to cut the exhaust valve side also?
Good Luck!
BTW, good choice on flycutting, you'll be glad you did. If I were you, I'd rent the 2.05" tool in case you decide to switch to a larger valve head later on like the AFR 225. Are you sure you won't need to cut the exhaust valve side also?
Good Luck!
Yeah LG said only the intake side. 
And the parties. 
Look for me with the blue '98Z and the floppy tan hat.
03-30-2005, 09:47 AM
#38
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Worst case dont' flycut the pistons, you end up having all this drama. Going from 10.1: to 11.1 might be a total hp increase of 3%. Granted more compression will held down low but you have to do what you can do within the limitations of your resources.
I think you can hit 435rwhp for sure.
I think you can hit 435rwhp for sure.
03-30-2005, 10:03 AM
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Mike spoke to the mechanic last night and he will (reluctantly) do it. We'll see you guys at NFME. I'll be in a white LS1 SS with ZR1s and Missouri plates. I'll look for you guys.
03-30-2005, 10:46 AM
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Originally Posted by Tech
I should say that I don't trust anyone in St. Louis to flycut with the pistons in the block (except possibly myself or this other mechanic). Everyone we talk to (ouside of LS1tech/Internet) says that's too risky.
My advice is to run a smaller cam and be done with it.
You can't run the cam you are talking in your application with milled heads without flycutting period.
Otherwise you are going to ruin a perfectly good motor.
