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#1
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Oh yeah, heads!
OK, here's the heads as is, after I pulled them awhile back.
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WFO! http://www.cardomain.com/id/Schralper "You all laugh cuz I'm different I laught cuz you're all the same." |
#2
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Re: Oh yeah, heads!
Now here's the after port & polish, pressure test, mill .010, valve job.
Headers next, flanges here, just gotta get tubing. Waiting for pricing on shortblock rebuild. It would be nice to swing that this summer.
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WFO! http://www.cardomain.com/id/Schralper "You all laugh cuz I'm different I laught cuz you're all the same." Last edited by Schralper; 06-19-2009 at 01:28 PM. |
#3
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Re: Oh yeah, heads!
What flow numbers have you got before and after?
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#4
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Re: Oh yeah, heads!
They're soooo clean!
Did you use a flow bench for the P&P, or just do it by eye?
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl |
#5
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Re: Oh yeah, heads!
nice job. im intrested in flow numbers too
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1992 NZDM SVX Maroonish Red/Black ( 1st car ive owned with an cd player ) Has been retired 1989 Vortex 6 Maroon 1983 RX Silver Grey 1973 1400 GSR Yelo 2 Door Coupe awaiting Restoration |
#6
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Re: Oh yeah, heads!
No flow testing.
Based on RallyBob's testing it's the exh side that needs the work. That's fer sure! These just got a lil pocket porting, near valves, w/ most actual porting on exh side. Mostly since I'm also not sure if I'm gonna run regrind cams in place of OE ones. You just can't get the dogleg good and I'd wanna know how thick the heads were before hoggin them out. If I was gonna try to max these out I'd definitely get them "extrude honed". Injectors goin out for clean and cal this comin week. Still waiting on pricing for shortblock rebuild. Here's dynomatt or RallyBob's?? info- Don't know if this interests anyone, but I recently flowed a bone-stock EG33 SVX head for a friend of mine. It was done on my Superflow 110 flowbench, measured at 10" of water. Intake flow: .100" - 49 cfm .150" - 76 cfm .200" - 101.5 cfm .250" - 125.5 cfm .300" - 146 cfm .350" - 164 cfm .400" - 166.5 cfm .425" - 167.75 cfm .450" - 167.75 cfm .475" - 168 cfm Exhaust flow: .100" - 44 cfm .150" - 62 cfm .200" - 79 cfm .250" - 92.5 cfm .300" - 99.5 cfm .350" - 104 cfm .400" - 107 cfm .425" - 109 cfm .450" - 109 cfm .475" - 110 cfm You'll note the intake ports really seem to like valve lift, whereas the exhaust ports are not so good at higher lifts. Note the massive jump in intake airflow from .250" to .400" valve lift. Exhaust flow proportion is a bit low, so that seems to be where development might make the best gains in HP. To convert my numbers to the common '28" of water' figure, multiply these numbers by 1.67. To convert my numbers to 25", multiply by 1.54.
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WFO! http://www.cardomain.com/id/Schralper "You all laugh cuz I'm different I laught cuz you're all the same." Last edited by Schralper; 05-26-2009 at 04:17 PM. |
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