1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
Pics as promised. I bought this head all welded up, then after numerous attempts by my local head shop, still wouldn't seal and as you can see by the arrows, it was still badly cracked even after all that,
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
I had thought he was using the blower to produce a greater depression. ... trying to simulate a running engine to see the effects of that on a ports flow vs turbulence ... calculating backward to better determine rpm/lift points as it relates to a specific heads port/runner shapes.
The blowing through confuses me. Maybe more info on the test set-up/mechanics behind it? Don't see what blowing additional cfm through a port means by itself .. other than coming to the same conclusions a regular bench would show?
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
Robert Mclellan
http://www.youtube.com/watch?v=wambNdfnu5M
10.04 @ 143.28mph (144.82 highest mph)
Worlds fastest 8v MTX Shelby Charger
Manitoba's Fastest 4cyl!
8 valve, No Nitrous!
New clutch combo is the SH!T!
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
I saw bench ... thought test procedures were other than "blowing into ports" to simulate "increased cfm".
Might be helpful if we start looking at FI in lb/hr (mass) vs cfm (volume)?
A FI cylinder doesn't process twice the cfm (volume) @2BAR .. it processes twice the mass. How does his rig duplicate that?
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
Quick update, he's almost done, had to make me new valve guides, cheaper than buying new OEM ones,
Port close to being finished-
stock intake, .100-.500- 96.2, 175.5, 227.6, 243.5, 246.2
stock exhaust, 56.4, 126.8, 168.4, 191.6, 203.5
ported intake, .100-.500- 97.6, 180.0, 237.3, 260.1, 274.8
ported exhaust, 68.7, 140.2, 181.3, 204.5, 220.0
ported with a valve job, intake, .100-.600-96.6, 186.8, 244.8, 268.6, 277.2, 280.0
exhaust with valve job, 75.6, 151.2, 196.7, 218.2, 230.3, 239.5
Should do alright, should be alot of fun.
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
I like this format when viewing head flow.
Intake
Lift - Stock / Ported - % increase
.100 - 96.2 / 97.6 - 1.5%
.200 - 175.5 / 180.0 - 2.5%
.300 - 227.6 / 244.8 - 7.5%
.400 - 243.5 / 260.1 - 6.8%
.500 - 246.2 / 274.8 - 11.6%
Exhaust
Lift - Stock / Ported - % increase
.100 - 56.4 / 68.7 - 21.8%
.200 - 126.8 / 140.2 - 10.5%
.300 - 168.4 / 181.3 - 7.6%
.400 - 191.6 / 204.5 - 6.7%
.500 - 203.5 / 220.0 - 8.1%
Did you chop that Magnum head yet?
later Dick Westerhof
Me too, but I am lazy, and you did it for me,Originally Posted by GLHNSLHT2
I think he did, he'll be around in the next few days.Originally Posted by boost geek
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
I would assume 5 angle, stock is 2 angle,
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
More pics-
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
Well there's yer problem, shoulda taken it to a machinist rather than your local stoner supply emporium.
Not really, higher speeds and densities can have odd and counter-intuitive effects on flow. Of course it could be done by just taking a wild arsed guess, but that's not much better than porting N/A without a conventional bench.
Well there's some guys swear by magic angles and there's some guys say get as many angles as possible... but from what I've seen "running the math" is that a surface has to be pretty broad, on the order of a quarter inch or more, for flow to attach to it properly, so I wonder if the magic angle guys aren't closer than the multi angle ones.... and if you figure that flow is gonna stay attached to something more approximating a smooth curve... you'd be right...for a fairly large radius..... fact is, it's detaching way back up the port, because there just ain't room for a curve like that in most heads.... by time it gets to the valve it's a case of picking the best shove, trip or pull that will get your crowd of angry drunks individually out the door of the bar in the fastest manner, rather than standing there trying to gently persuade them.
On the "it won't show any gains unless it's matched to headers and manifold" POV.... 9 times out of 10 it will show some good gains I would think, although maybe half it's potential when these components are optimised... the 10th time is when it's ported specifically for a high lift long duration race cam that it hasn't got yet.... done to support stock to street/race cams, it should show gains on the stocker.
DD1: '02 T&C Ltd, 3.8 AWD. DD2: '15 Versa Note SV, replacing.. DDx: '14 Versa Note SV << freshly killded :( ....... Projects: '88 Voyager 3.0, Auto with shift kit, timing advance, walker sound FX muffler on 15" pumpers wrapped in 215/65/R15 H rated Nexens.... and a '95 phord escort wagon PnP head << Both may need to go :( ..... I like 3.0s ... so??? ... stop looking at me like I've got two heads!
Id like to see some #'s on 8 valve stuff