Datsun 240Z L28 stroker – how to lock a distributor
4.9 هزار بار بازدید -
6 سال پیش
-
Datsun 240Z L28 stroker –
Datsun 240Z L28 stroker – how to lock a distributor
As part of my ignition only Megasquirt build I need to lock out the distributor advance. This video details how I went about it.
TIMESTAMP
Introduction – 0:10
Principles of locking out the distributor – 0:24
Disassembly of the distributor – 2:00
Comments on the vacuum advance – 3:10
Operation of the mechanical advance – 4:16
Epoxy filling the mechanical advance – 6:40
Drilling to suit counterweights – 9:03
Comments on application of lock out – 10:57
Summary – 11:55
THE SCIENCE BEHIND IT
Standard Datsun L series distributors have two means in which to advance timing. These are vacuum and mechanical advance.
When using an ECU to control distributor based ignition, locking out the native advance mechanisms is normally required. Typically the ECU will calculate the advance at a given RPM from a number of parameters and sensors. Locking the distributor provides the ECU with an ignition advance datum.
In the case for this build, the vacuum advance appears strong enough to prevent movement if a vacuum is not applied and I’ll leave the vacuum advance disconnected.
To lock out the mechanical advance I’ve used two part epoxy putty to fill the calibrated slots in the ‘T’ please to prevent movement of the counterweights and advancing behaviour. There are a number of ways to lock out the distributor different to the method I’ve used. Each have pros and cons.
After filling of the slots, the putty was drilled to be a tight fit over the pegs for the mechanical advance counterweights preventing movement. After immobilisation was confirmed the distributor was reassembled and installed.
LINKS
260Z advance lock out .STL file by Alex_260z: https://www.thingiverse.com/thing:205...
260Z point distributor vacuum advance lock out .STL file by Alex_260z: https://www.thingiverse.com/thing:205...
Instagram: Instagram: built_on_purpose
Facebook: Facebook: Built-On-Purpose-2917308718494646
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MUSIC
Intro: Garage - Topher Mohr and ALex Elena
Hyperlapse/outro: Takeoff – Ethan Meixsell
MY FILMING GEAR
iPhone 8 Plus:
Rode Videomic me-L: https://t.cfjump.com/62404/t/21198?Ur...
Aukey Ora 120 degree wide angle lens and 15x macro:
Inca tripod: https://t.cfjump.com/62404/t/21198?Ur...
GoPro Hero: https://www.sparesbox.com.au/part/gop...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DISCLAIMER: I am not a mechanic or tuner. This video is for entertainment purposes only and is not to be used a instruction or a guide for your own activities. Copying modifications described in this video is at your own risk.
DISCLOSURE: From time to time I will provide a link to a product I regularly use or think you might find helpful. Some products may be part of an affiliate program and this will normally be clearly explained in the video. Purchasing a product from one of these links provides a small amount of income and is a means to support the channel.
#240Z #fairladyz #datsun
As part of my ignition only Megasquirt build I need to lock out the distributor advance. This video details how I went about it.
TIMESTAMP
Introduction – 0:10
Principles of locking out the distributor – 0:24
Disassembly of the distributor – 2:00
Comments on the vacuum advance – 3:10
Operation of the mechanical advance – 4:16
Epoxy filling the mechanical advance – 6:40
Drilling to suit counterweights – 9:03
Comments on application of lock out – 10:57
Summary – 11:55
THE SCIENCE BEHIND IT
Standard Datsun L series distributors have two means in which to advance timing. These are vacuum and mechanical advance.
When using an ECU to control distributor based ignition, locking out the native advance mechanisms is normally required. Typically the ECU will calculate the advance at a given RPM from a number of parameters and sensors. Locking the distributor provides the ECU with an ignition advance datum.
In the case for this build, the vacuum advance appears strong enough to prevent movement if a vacuum is not applied and I’ll leave the vacuum advance disconnected.
To lock out the mechanical advance I’ve used two part epoxy putty to fill the calibrated slots in the ‘T’ please to prevent movement of the counterweights and advancing behaviour. There are a number of ways to lock out the distributor different to the method I’ve used. Each have pros and cons.
After filling of the slots, the putty was drilled to be a tight fit over the pegs for the mechanical advance counterweights preventing movement. After immobilisation was confirmed the distributor was reassembled and installed.
LINKS
260Z advance lock out .STL file by Alex_260z: https://www.thingiverse.com/thing:205...
260Z point distributor vacuum advance lock out .STL file by Alex_260z: https://www.thingiverse.com/thing:205...
Instagram: Instagram: built_on_purpose
Facebook: Facebook: Built-On-Purpose-2917308718494646
Twitter: Twitter: builtonpurpose1
SUPPORT THE CHANNEL
Patreon: Patreon: builtonpurpose
Redbubble: https://www.redbubble.com/people/buil...
Teepublic: https://www.teepublic.com/user/builto...
MUSIC
Intro: Garage - Topher Mohr and ALex Elena
Hyperlapse/outro: Takeoff – Ethan Meixsell
MY FILMING GEAR
iPhone 8 Plus:
Rode Videomic me-L: https://t.cfjump.com/62404/t/21198?Ur...
Aukey Ora 120 degree wide angle lens and 15x macro:
Inca tripod: https://t.cfjump.com/62404/t/21198?Ur...
GoPro Hero: https://www.sparesbox.com.au/part/gop...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DISCLAIMER: I am not a mechanic or tuner. This video is for entertainment purposes only and is not to be used a instruction or a guide for your own activities. Copying modifications described in this video is at your own risk.
DISCLOSURE: From time to time I will provide a link to a product I regularly use or think you might find helpful. Some products may be part of an affiliate program and this will normally be clearly explained in the video. Purchasing a product from one of these links provides a small amount of income and is a means to support the channel.
#240Z #fairladyz #datsun
6 سال پیش
در تاریخ 1397/09/14 منتشر شده
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