123 Ignition has been around for awhile, the Bluetooth option has been available for a couple of years.
Easy way to get programmable ignition on cars with 'legacy' distributor ignition.
Search found 540 matches
- Fri Jan 06, 2023 10:10 am
- Forum: Engine Tech
- Topic: Progression Ignition
- Replies: 34
- Views: 3601
- Sat Dec 17, 2022 4:47 pm
- Forum: Engine Tech
- Topic: Cost to rev higher
- Replies: 47
- Views: 3068
Re: Cost to rev higher
Street/Strip SBC or SBF safely revs to 6000 rpm How much more money and how much shorter life to build to: Safely rev to 6500 rpm? Safely rev to 7000 rpm? Safely rev to 7500 rpm? Safely rev to 8000 rpm? Bearing loads and component loads are from 2 main sources: Gas loads on piston crown : intake,ex...
- Sat Dec 17, 2022 4:10 pm
- Forum: Engine Tech
- Topic: Head Bolts and Main Studs/Girdle?
- Replies: 12
- Views: 820
Re: Head Bolts and Main Studs/Girdle?
Better to have bolts that you know are a little stronger than they need to be, than bolts that you wonder are strong enough than they need to be. I see ARP rod bolts for my application that are spec'd at 200k psi, vs the stock bolts that are 100k psi. Yet ARP recommends the same 48 ft-lb max torque ...
- Sat Dec 17, 2022 3:53 pm
- Forum: Engine Tech
- Topic: Alignment of Main Bore
- Replies: 12
- Views: 1100
Re: Alignment of Main Bore
Hydrodynamic bearings only generate an oil wedge to support a load when operated with the journal center offset from the bore center. In bearing load design calculations, this offset term is called 'eccentricity', and is a fundamental factor in supporting bearing load that is generated. When eccentr...
- Sat Dec 17, 2022 3:01 pm
- Forum: Engine Tech
- Topic: A new era of high tech racing
- Replies: 12
- Views: 1207
Re: A new era of high tech racing
Big time racing is Show Business, emphasis on 'Business'. and 'Show'.
Drivers and cars are the just the 'Product', it's the Money made from the Consumers that drive things.
Drivers and cars are the just the 'Product', it's the Money made from the Consumers that drive things.
- Sat Dec 17, 2022 2:49 pm
- Forum: Engine Tech
- Topic: Back cutting valves ?
- Replies: 14
- Views: 1405
Re: Back cutting valves ?
A toolpost grinder for the lathe permits grinding precision multi-angle compound seats, plus valve head and face shaping. More time consuming than a Serdi or similar tool, but gives ultimate flexibility to do whatever you want. 5C collets can be had for any valvestem size, and clamping close to the ...
- Sat Dec 17, 2022 8:34 am
- Forum: Engine Tech
- Topic: 2nd ring end gap with KB hyper pistons
- Replies: 26
- Views: 1516
Re: 2nd ring end gap with KB hyper pistons
Just remember that ring gaps change by factor of Pi * bore diameter change.
So for each 0.001" of bore increase, gap increases by 0.00314".
So for each 0.001" of bore increase, gap increases by 0.00314".
- Mon Feb 28, 2022 3:49 pm
- Forum: Engine Tech
- Topic: Block Rigidity and HP
- Replies: 23
- Views: 9592
Re: Block Rigidity and HP
I'd be amazed if the major OEM do not have this data. The FEA software is good enough and fast enough and cheap enough that they routinely model everything first, and then do real world testing for final confirmation of the data model fidelity. Modern 3D metrology scanning can easily detect 0.001 or...
- Mon Feb 21, 2022 1:37 pm
- Forum: Engine Tech
- Topic: PWM Fan/EWP Controller
- Replies: 8
- Views: 842
Re: PWM Fan/EWP Controller
On a water pump application, both the thermal inertia and the coolant velocity inertia should be high, so PWM frequency control should not need to be any faster than say a few per second. Duty cycles between 0% and 100% should easily handle the task. What main parameter would you use to control the ...
- Sun May 16, 2021 8:55 am
- Forum: Engine Tech
- Topic: Aluminum Tapered Ring Compresser & Napier Second Rings
- Replies: 11
- Views: 1912
Re: Aluminum Tapered Ring Compresser & Napier Second Rings
I made a steel tapered compresser. My application requires range of 2.900-2.950 and there were no standard ones I liked. I used a piece of steel 3/8 wall pipe. On my lathe, cut off a 2" long piece, finished outside smooth, and bored the inside to 2.950. I took a tapered inside cut over about 1....
- Mon Nov 09, 2020 1:32 pm
- Forum: Chassis / Suspension / Body
- Topic: DIY Car Alignment
- Replies: 13
- Views: 2997
Re: DIY Car Alignment
To isolate tire friction from the floor when aligning or doing cornerweighting I do the following: Large Ziplock bag, Gallon size works well. 'Personal Lubricant' inside the bag, not too much, add just enough to make a thin wet layer inside when the bag is flat. If the floor is not flat and smooth, ...
- Thu Aug 01, 2019 3:57 pm
- Forum: Engine Tech
- Topic: Oil restrictors
- Replies: 6
- Views: 991
Re: Oil restrictors
Our oil pumps are positive displacement type (gear, gerotor, etc.) Oil is essentially incompressible. So at any given RPM, the volume of oil pumped will be the same. Eventually, all the oil drains down and winds up in the sump, to be picked up by the pump. All the restrictors do is change how much o...
- Wed Jul 10, 2019 10:53 pm
- Forum: Engine Tech
- Topic: carbon fiber push rods and wrist pins
- Replies: 45
- Views: 9398
Re: carbon fiber push rods and wrist pins
A Carbon Fiber strand is very strong in tension, miserably weak in compression. The trick with it is to take advantage of it's strengths by controlling part geometry and construction. The buckling deflection of a column loaded in compression is a the critical design consideration, and CF can certain...
- Mon Feb 18, 2019 2:38 pm
- Forum: Vintage/Classic/Historical Engine Tech
- Topic: Unique OHV mechanism
- Replies: 17
- Views: 2434
Re: Unique OHV mechanism
I first heard of this in an article 25 years ago from Car & Driver (or maybe it was Road & Track) discussing various methods. If you calculate the mass of all the steel balls vs a tubular pushrod … well, maybe the guy owned stock in a ball bearing factory. However, I've often wondered if a v...
- Sat Sep 08, 2018 1:57 pm
- Forum: Engine Tech
- Topic: 5/16 Carr rod bolts
- Replies: 30
- Views: 5055
Re: 5/16 Carr rod bolts
5/16 bolts are obviously lighter than 3/8 bolts. As for strength, the tensile load limit on rod big ends is the strength of the rod bolts. So the sum of piston and rod weight times G loading at max RPM plus the max vacuum times piston crown surface are will determine what that maximum tensile load t...