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Location:
Melbourne
Registered:
May 2002
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Re: Increasing Flow. 1G-GTE Head.
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Wed, 19 October 2005 03:35
 
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The stock head flows something like 160cfm and yes the inlet way outflows it. I think this was tested at like 27 inches of water or mercury (cant remember). My stock plenum tested the same way flowed something like 220-245 cfm, there is a bit of variation between the runners 1 and 6 flowing the most and i think number three was up there also. After some extrude honing of the plenum and runners thanks to Andrew at Specialised power porting the inlet now flows something like 290cfm per runner with an variation of 3-5 cfm between the runners. So yes the stock plenum outflows the head, but something to consider is the difference in flow, and also take into account that the TVIS will give you a more of a lean out on number 1 and 6 due to the fact that there is no butterflies on the end runners. As far as head goes apparently stock valve spring size is best, but the head does benifit greatly from some extrude honing flowing it up to like 190cfm and even more so benefit from doing a 5 angle valve seat job the angles it greatly benifits from i cant remember off hand but if you give Andrew Sanders @ specialised power porting a call im sure he can help you out
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| | Subject | Poster | Date |
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Increasing Flow. 1G-GTE Head.
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GTtwin | Mon, 17 October 2005 04:21 |
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Re: Increasing Flow. 1G-GTE Head.
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CrUZsida | Mon, 17 October 2005 08:51 |
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Re: Increasing Flow. 1G-GTE Head.
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GTtwin | Mon, 17 October 2005 09:00 |
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Re: Increasing Flow. 1G-GTE Head.
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CrUZsida | Mon, 17 October 2005 09:15 |
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Re: Increasing Flow. 1G-GTE Head.
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gianttomato | Mon, 17 October 2005 09:29 |
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Re: Increasing Flow. 1G-GTE Head.
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jeffro RA28 | Mon, 17 October 2005 10:12 |
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Re: Increasing Flow. 1G-GTE Head.
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badboybubby | Tue, 18 October 2005 06:59 |
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Re: Increasing Flow. 1G-GTE Head.
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Fattony | Wed, 19 October 2005 03:35 |
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Re: Increasing Flow. 1G-GTE Head.
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Dirty_Sanchez | Wed, 19 October 2005 04:03 |
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Re: Increasing Flow. 1G-GTE Head.
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GTtwin | Sun, 23 October 2005 08:01 |
