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11-01-2020, 07:26 PM | #1 |
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Longblock: IAG 600 VS 700 Gains
The IAG 600 and 700 heads are identical except the 700 uses oversized valves +1mm.
With both being the same, with the same turbo/settings, how much more power would the 700 make due to these valves? Please ball park away.
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11-02-2020, 10:19 AM | #2 |
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What's the rest of the setup?
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11-02-2020, 12:29 PM | #3 |
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11-02-2020, 12:55 PM | #4 |
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11-02-2020, 01:14 PM | #5 |
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11-02-2020, 05:02 PM | #6 | |
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What are your goals? And have you called IAG? |
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11-02-2020, 06:25 PM | #7 |
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Hmmm, is the head holding ur setup back? If yes then they are worth a lot, of not then not much. It would make a lil more power on a lil less boost and egt might be a touch less
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11-02-2020, 06:53 PM | #8 |
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I already ordered the 600 and will be running a meth fp red htz 8cm ported turbo with Tial MVI internal 18psi wastegate + full bolt ons. The 700 heads are only $300 more and im wondering if I upgraded to the +1mm valves if this would push beyond the stage 2 tuff block and apr2000 headstuds capability. Im planning on pushing this set up basically as hard it will go. Hoping for 600 crank /500whp.
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11-02-2020, 07:01 PM | #9 |
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My current set up cobb20g + meth and full bolt ons have left me with a leak from the exhaust valves. I havent had the block apart to see for sure but the shop was fairly confident that the exhaust valves on my cylinder 2 were destroyed. The egt lowering is something I am obviously interested in and am basically wondering if I should at minimum get the super alloy exhaust valves over the standard, or if the standard should be fine?
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11-02-2020, 07:01 PM | #10 |
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Turbine housing will hold it back before the valve size I’d think
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11-02-2020, 07:02 PM | #11 |
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My current set up cobb20g + meth and full bolt ons have left me with a leak from the exhaust valves on my oem engine. I havent had the block apart to see for sure but the shop was fairly confident that the exhaust valves on my cylinder 2 were destroyed. The egt lowering is something I am obviously interested in and am basically wondering if I should at minimum get the super alloy exhaust valves over the standard, or if the standard should be fine?
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11-02-2020, 07:05 PM | #12 |
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11-02-2020, 07:06 PM | #13 |
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Is Cobb 20g a td05 or 6? That red should be a 06h if I recall, that should lower egt if going from 5-6. Also the valve seat surface being correct goes far to pull the heat out of the valve.
As far as material goes I don’t know, I have gone from sodium filled to a good stainless with no bad effects but in a diff tho boosted platform. |
11-02-2020, 07:06 PM | #14 |
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11-02-2020, 07:12 PM | #15 | |
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11-02-2020, 07:17 PM | #16 |
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the fp red was atleast a gt35r based, I dont know if it still is or not after the redesign but its still 65lbs/min.
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11-03-2020, 04:53 PM | #17 |
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It depends on a lot of things in the set up. If the heads aren't your major restriction in the engine, then they won't net you much.
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