[Autoholic]

Well ???

There is a beauty and fascination to be found in mechanical and analog systems that is lost when you use circuit boards and semiconductors.

 

[kwschumm]

There is a beauty and fascination to be found in mechanical and analog systems that is lost when you use circuit boards and semiconductors.

I feel that way about all the unnecessary nanny, entertainment, black box and “convenience” crap in modern cars. However, I do like the reliability and lower maintenance requirements of electronic ignition and fuel systems. Those are a huge reason that modern cars are more reliable than cars from the seventies.

 

[GThound]

If only someone had designed an aluminum crankshaft pulley with a ledge to add a CPS wheel. And designed the corresponding CPS wheel. And designed a holder for the CPS that bolts onto the outside of the oil pump cover.

That would be awesome

Love it! I have read the big thread on the topic. So, so you happen to have any laying around that you would sell?

 

[DavidF1972]

There is a beauty and fascination to be found in mechanical and analog systems that is lost when you use circuit boards and semiconductors.

There's also I.W.S.
When you run your carburated car hard and put it away hot in the garage that's under you house.
Irritable wife syndrome....The bane of all men into hopped up cars...
I'm not against carburetors, but you have to admit fuel injection ??? Heck I don't know what I'm trying to say here... carry on.. lol

 

[First opel 1981]

Love it! I have read the big thread on the topic. So, so you happen to have any laying around that you would sell?

So, there's more to the story.
I didn't have the crank pulleys made. Someone else on the site did. But I designed it (there's some ambiguity as to who owns the design). Since someone else had them made, and I don't have their contact info, I'd have to find a new person to manufacture more. That's if I sold the ones I have left.
Then there's the CPS ring.
I designed that to go on the aluminum crank. And I had ONE made. Just a test item, mind you, but it fit perfectly. BUT, I don't remember the info of who made it. It was waterjet cut. And it was pretty inexpensive.
And then there's the CPS holder. The one in the picture is a prototype made with a 3D printer. I was sourcing the person who cut the timing ring but about the time I was doing that, my computer died. (I'm really not sure how dead it is. I might be able to buy an identical laptop and swap the hard drive).
I was getting my new computer all set up but somehow, my design program wouldn't work (Ahar, matey) and so I lost access to the files. I have the design files backed up but can't open them.

And that's when I had a nervous breakdown. No, the computer had nothing to do with it but it happened.

I've spent the last few years trying to get motivated.

Waterjet cutting is a little more widespread now so it probably would be less expensive than it was before from a lot of vendors. Or there's a vendor that's a little more pricey I could go to.

And I'd do all that if I didn't have to pay $4000 to install the program without the eye patch.

 

[DavidF1972]

That's if I sold the ones I have left.

So, you still have crank pulleys available ??
How about the water pump pulleys ??

 

[First opel 1981]

So, you still have crank pulleys available ??
How about the water pump pulleys ??

Yes, I have a couple.
I believe I have more water pump pulleys than crank pulleys. I'm not sure if the water pump pulleys line up with stock crank pulleys though. I'm sure they could be made to work.

 

[DavidF1972]

Yes, I have a couple.
I believe I have more water pump pulleys than crank pulleys. I'm not sure if the water pump pulleys line up with stock crank pulleys though. I'm sure they could be made to work.

But they ( the aluminum crank and wp pulley) will line up together, but not with the alternator pulley correct ??

 

[First opel 1981]

But they ( the aluminum crank and wp pulley) will line up together, but not with the alternator pulley correct ??

I "think" they do line up with the alternator. I used a stock pulley for the initial design and added in the second pulley.
But, yes, the WP pulley and crank pulley line up.

 

[Autoholic]

Irritable wife syndrome....The bane of all men into hopped up cars...

I’m single. Problem avoided.

I feel that way about all the unnecessary nanny, entertainment, black box and “convenience” crap in modern cars. However, I do like the reliability and lower maintenance requirements of electronic ignition and fuel systems. Those are a huge reason that modern cars are more reliable than cars from the seventies.

Oh I know EFI has made cars more reliable. I’m very interested in EFI too. But a GT for me is to be an escape from the modernization of engines. I’m still aiming to make it very reliable. The only modern electronic devices will be the Ignitor II and Retro Sound Radio.

 

[DavidF1972]

Stock trigger wheel diameter is 6.308"

 

[GThound]

Oooh, I want one! Thank you for the specs

 

[DavidF1972]

Oooh, I want one! Thank you for the specs

We're better off going with the 36/1 tooth wheel. The air gap between the teeth on the 60/2 is just to close together and causes problems at high rpms.

 

[GThound]

So, will this trigger wheel work from DIYautotune? At 6.75” it is just slightly larger in diameter than the stock 6.3” diameter trigger wheel. It seems to have the right number of teeth and the price is right.

 

[DavidF1972]

So, will this trigger wheel work from DIYautotune? At 6.75” it is just slightly larger in diameter than the stock 6.3” diameter trigger wheel. It seems to have the right number of teeth and the price is right. View attachment 445135

I'll have to look again, but I was thinking this one would hit something on the timing cover, that's why I found that smaller one... stock crank pully is only 5" in diameter...
I'm going to try and get the spare motor out of the other gt sometime soon and start tearing into things In more depth. I'll probably do a test run on the engine stand before transferring everything to the car.
Microsquirt ecu should be here Thursday. Still reading up on the configuration for all the sensors so when the time comes I can just go for it..

 

[First opel 1981]

As long as you aren't getting mechanical interference, the diameter of the wheel just has to be comparable to whatever sensor you use.
I spent an afternoon looking for sensors to find one the right size for the wheel I designed.
I did it backwards. I should have installed a sensor first and made a wheel to match.

 

[DavidF1972]

As long as you aren't getting mechanical interference, the diameter of the wheel just has to be comparable to whatever sensor you use.
I spent an afternoon looking for sensors to find one the right size for the wheel I designed.
I did it backwards. I should have installed a sensor first and made a wheel to match.

Huh?? What???

 

[Autoholic]

Huh?? What???

Hall effect sensors have specific detection distances. So it’s easier to find a CPS that fits our application and then design the trigger wheel to work with it.

 

[DavidF1972]

Hall effect sensors have specific detection distances. So it’s easier to find a CPS that fits our application and then design the trigger wheel to work with it.

Horse puckey!!

 

[DavidF1972]

So, will this trigger wheel work from DIYautotune? At 6.75” it is just slightly larger in diameter than the stock 6.3” diameter trigger wheel. It seems to have the right number of teeth and the price is right. View attachment 445135

I managed to pull the spare motor today. I think this wheel will fit in there. I'll do some double checking tomorrow and let you know for certain.
Also the wheel needs to be oriented so the cps is 9 teeth before the missing tooth... Basically 90 degrees ahead of TDC...