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How much deck is removed when milling

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Old Dec 26, 2005 | 10:39 PM
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Default How much deck is removed when milling

Asked this in the tech section but thought it would make sense to get it here...

On AFR 225's... when milling from a 72cc to 68cc, is there enough of the deck removed that the advantage of the thicker deck gets wasted, specifically, in high 18+psi boost applications?

Arnel
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Old Dec 26, 2005 | 10:49 PM
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Originally Posted by AVB
Asked this in the tech section but thought it would make sense to get it here...

On AFR 225's... when milling from a 72cc to 68cc, is there enough of the deck removed that the advantage of the thicker deck gets wasted, specifically, in high 18+psi boost applications?

Arnel

arnel what would your compression be if you left head @ 72cc???
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Old Dec 26, 2005 | 10:57 PM
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Originally Posted by AVB
Asked this in the tech section but thought it would make sense to get it here...

On AFR 225's... when milling from a 72cc to 68cc, is there enough of the deck removed that the advantage of the thicker deck gets wasted, specifically, in high 18+psi boost applications?

Arnel
The integrity of the head will not be effected. You would be milling approximatey .005 per cc = .020 total.

Happy New Years,

Charlie
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Old Dec 26, 2005 | 11:00 PM
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Originally Posted by NICK YOSKIN
arnel what would your compression be if you left head @ 72cc???
Don't know exactly at the moment.. at 66cc I would be at 8.8:1 so just a tad lower. 72cc I think would be a little over 8.2:1.

I would prefer leaving the heads alone but it's available right now and at a good price... new never used but already cut.

Was Santa good to Nick?
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Old Dec 26, 2005 | 11:20 PM
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Originally Posted by CharlieTuner@AandACorvette
The integrity of the head will not be effected.
Thanks Charlie. That's what I needed to know. Happy New Years!!

Arnel
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Old Dec 26, 2005 | 11:34 PM
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Originally Posted by AVB
Don't know exactly at the moment.. at 66cc I would be at 8.8:1 so just a tad lower. 72cc I think would be a little over 8.2:1.

I would prefer leaving the heads alone but it's available right now and at a good price... new never used but already cut.

Was Santa good to Nick?

santa was light... gettin basement finished w/media room and all solid wood bar. should be cool. tomorrow ill call you to get some ifo and then forward it to my engine builder. he has caculator, not some cheesey one, that will give accurate figure.

i finally got around to finishing my car, lousy weather, well anyway saw rad tempt get up to 235 idling! not heat either out of vents. system wouldnt take anymore water but upper hose was "soft".
stuck thermostat?
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Old Dec 26, 2005 | 11:47 PM
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Originally Posted by NICK YOSKIN
santa was light... gettin basement finished w/media room and all solid wood bar. should be cool. tomorrow ill call you to get some ifo and then forward it to my engine builder. he has caculator, not some cheesey one, that will give accurate figure.

i finally got around to finishing my car, lousy weather, well anyway saw rad tempt get up to 235 idling! not heat either out of vents. system wouldnt take anymore water but upper hose was "soft".
stuck thermostat?
sounds like it... check the hose to the radiator from the water pump and see if it's hot. if not thermostat is stuck closed..

On the 408 motor specs, 68cc would be 8.6:1 and 72cc would be 8.4:1
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Old Dec 27, 2005 | 08:40 AM
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Originally Posted by AVB
sounds like it... check the hose to the radiator from the water pump and see if it's hot. if not thermostat is stuck closed..

On the 408 motor specs, 68cc would be 8.6:1 and 72cc would be 8.4:1
i wouldnt waste your time "slicin" your heads
8.4:1 is basically were i am at. w/408 youll have plenty of torque off boost. i love to be able to spin the crap outa my te44.

anrel i cant wait until u get that sucker up to 18psi!! ill be waitin for the phone call after that blast!
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Old Dec 27, 2005 | 11:16 AM
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Originally Posted by NICK YOSKIN
i wouldnt waste your time "slicin" your heads
8.4:1 is basically were i am at. w/408 youll have plenty of torque off boost. i love to be able to spin the crap outa my te44.

anrel i cant wait until u get that sucker up to 18psi!! ill be waitin for the phone call after that blast!

The heads are from a 3rd party whose already got the chambers down to 68cc. He's local so I can havem in no time. I'd prefer the 72cc for sure.

It should be up and runnin on 06!!!
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Old Dec 27, 2005 | 10:52 PM
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Originally Posted by AVB
The heads are from a 3rd party whose already got the chambers down to 68cc. He's local so I can havem in no time. I'd prefer the 72cc for sure.

It should be up and runnin on 06!!!

on 06? which day in 06??
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Old Dec 28, 2005 | 12:25 AM
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No effect milling 225's out of the box to what you want to do. The deck thickness is huge on 225's.

Nick sorry to read about your heat issues, sounds like a real simple fix.

Tell Lisa I said hi and I hope you both have a great New Years.

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Old Dec 28, 2005 | 01:43 AM
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To realy answer the compression question, you will have to meassure how far the piston comes out. That will determine alot.

Rick
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Old Dec 28, 2005 | 02:56 PM
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Originally Posted by Synergy Motorsports
To realy answer the compression question, you will have to meassure how far the piston comes out. That will determine alot.

Rick
That's right. Definitely a must since there are variances from what's advertised out there..

Arnel
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Old Dec 28, 2005 | 06:57 PM
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What is the dish on the pistons and how far out of the hole are they?

What compressed headgasket thickness?

Cheers,
Chris
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Old Dec 28, 2005 | 07:08 PM
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Originally Posted by jersey jay
No effect milling 225's out of the box to what you want to do. The deck thickness is huge on 225's.

Nick sorry to read about your heat issues, sounds like a real simple fix.

Tell Lisa I said hi and I hope you both have a great New Years.



same to you too!!!!!!!!!


i will let lisa know~!

chris sent stat today.
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