 Summit Point and V8 914's question, RPM corner exits |
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| HalfMoon |
 Jun 19 2018, 07:54 AM
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#1
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Senior Member  Group: Members Posts: 828 Joined: 13-November 12 From: Shenandoah Junction, WV Member No.: 15,144 Region Association: MidAtlantic Region  |
I'm wondering if their are any members who have converted 914's (to sbc) with a 901 trans-axle who have noted their corner exit RPM's at Summit Point Motorpark WV?
I don't have a computer to log my exit rpm's and I'm building a new bottom end but need to know this data so I can correctly match a camshaft. |
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| wndsrfr |
Jun 22 2018, 05:24 AM
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#2
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Senior Member Group: Members Posts: 1,428 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region 
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QUOTE(HalfMoon @ Jun 19 2018, 05:54 AM)  I'm wondering if their are any members who have converted 914's (to sbc) with a 901 trans-axle who have noted their corner exit RPM's at Summit Point Motorpark WV? I don't have a computer to log my exit rpm's and I'm building a new bottom end but need to know this data so I can correctly match a camshaft. FWIW My /6 has a stock geared 901 running 225/45/15's...you can see my rpm's on the tach on part of the track in a short video...sorry I didn't upload a whole lap...you'll see why. https://www.youtube.com/watch?v=oU8L2n3Jsx0 |
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| Andyrew |
Jun 22 2018, 01:58 PM
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#3
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California
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QUOTE(wndsrfr @ Jun 22 2018, 04:24 AM) QUOTE(HalfMoon @ Jun 19 2018, 05:54 AM) I'm wondering if their are any members who have converted 914's (to sbc) with a 901 trans-axle who have noted their corner exit RPM's at Summit Point Motorpark WV? I don't have a computer to log my exit rpm's and I'm building a new bottom end but need to know this data so I can correctly match a camshaft. FWIW My /6 has a stock geared 901 running 225/45/15's...you can see my rpm's on the tach on part of the track in a short video...sorry I didn't upload a whole lap...you'll see why. https://www.youtube.com/watch?v=oU8L2n3Jsx0 911 blow a coolant line? |
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| wndsrfr |
Jun 23 2018, 05:06 AM
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#4
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Senior Member Group: Members Posts: 1,428 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region
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QUOTE(Andyrew @ Jun 22 2018, 11:58 AM) QUOTE(wndsrfr @ Jun 22 2018, 04:24 AM) QUOTE(HalfMoon @ Jun 19 2018, 05:54 AM) I'm wondering if their are any members who have converted 914's (to sbc) with a 901 trans-axle who have noted their corner exit RPM's at Summit Point Motorpark WV? I don't have a computer to log my exit rpm's and I'm building a new bottom end but need to know this data so I can correctly match a camshaft. FWIW My /6 has a stock geared 901 running 225/45/15's...you can see my rpm's on the tach on part of the track in a short video...sorry I didn't upload a whole lap...you'll see why. https://www.youtube.com/watch?v=oU8L2n3Jsx0 911 blow a coolant line? Nope, look closely...tri-sected a deer...head to track right, torso into the car, hind part to track left... I immediately went and bought a full face helmet. |
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| sithot |
Jun 26 2018, 05:25 AM
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#5
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Member Group: Members Posts: 446 Joined: 25-October 06 From: Virginia Member No.: 7,090 Region Association: None
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QUOTE(wndsrfr @ Jun 23 2018, 07:06 AM) Nope, look closely...tri-sected a deer...head to track right, torso into the car, hind part to track left... I immediately went and bought a full face helmet. Useful things bitd. We use Ranch Hand or better on the farm. (IMG:style_emoticons/default/wink.gif) Attached image(s) 
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| Racer |
Jul 11 2018, 07:50 AM
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#6
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Senior Member Group: Members Posts: 787 Joined: 25-August 03 From: Northern Virginia Member No.: 1,073 Region Association: MidAtlantic Region |
Corner exits rpm are a function of gear and speed. I can take the same corner in 4th at 2500rpm or in 3rd at 3200rpm.. Or if I take a corner at 85mph and you take it at 65mph.. Guess I am wondering what you hope to improve upon by comparing others data points.
Also consider that other tracks do exist and if you build a motor for a specific track, you might have less fun elsewhere. The really serious folks build a motor first, then swap gearboxes to keep it in the powerband for particular tracks. |
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