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February 28, 2021, 07:35:14 PM

Show Posts - JonFuller

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Messages - JonFuller

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1
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 23, 2021, 10:24:27 PM »
Gonna make a large-ish bell mouth for the fan intake, bit like a 917 Porsche had. Bout 13” dia, 4”
High. With a stainless mesh in it.
Will help to stop me dropping things through the bloody fan!
Also fill in the gap. Looks like it has a missing front tooth atm.




2
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 23, 2021, 09:49:17 PM »
Getting better,,,slowly.

A lot of peeing about atm. but sure it'll be worth it.

https://www.youtube.com/watch?v=eggYLfZC1xk

3
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 21, 2021, 08:56:14 PM »
Had it's first run, plenty of messing around required yet.....

....but at least it runs.

Still learning the ropes with this DIY EFI nonsense.

https://www.youtube.com/watch?v=zjmyL3e53a8


https://www.youtube.com/watch?v=gKnE5TwpxpI

Onwards & sideways :-/

4
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 21, 2021, 08:40:45 PM »
Then stripped the guts out of the dizzy, and locked off the mechanical advance/retard mechanism. It will now just distribute the HT side of things, with the ECU controlling all spark management based on rpm, manifold absolute pressure (map) etc.























5
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 21, 2021, 08:38:45 PM »
Changed my mind on the trigger setup for the ecu, from using the dizzy internals, to fitting a crank mounted trigger wheel.

So made up a few bits to fit the Hall sensor and trigger wheel onto the vair....



































6
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 08, 2021, 06:20:16 PM »
Getting very close now. Gotta have the bonnet off to get the return line into the tank, prime the system and give it a wirl! Maybe tomorrow.

New larger throttle quadrant all fitted and working nicely.
Silicone breather all stuck together and fitted (its made of 3 x 90 degree pre formed bends, super glued onto 16mm stainless joining tubes).














7
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 05, 2021, 05:34:08 PM »
Throttle is a bit heavier than I'd hoped, as it's obviously got two lots of return springs, and it's quite short travel. Could do with larger quadrants really

Having decided the throttle was too heavy and a bit too short travel, I knew if I didn’t fix it now, it would get left :-/

So....

Turned up a new quadrant. Now 60mm instead of 30mm, cable travel up from 25mm to 50mm, as per the holley that was on it before.
Haven’t fitted it yet, but sure it’ll be way better :)
























8
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 04, 2021, 01:52:09 PM »
what about crankcanse breathing 🤷🏻‍♂️😂
Paul

Like this....














9
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 03, 2021, 08:53:35 PM »
Bolting on & hooking up....

Waiting on a few bits n bobs, but getting close to trying it out :)

Throttle is a bit heavier than I'd hoped, as it's obviously got two lots of return springs, and it's quite short travel. Could do with larger quadrants really










10
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 03, 2021, 11:18:50 AM »

You are a very clever man Jon 😀👍

Hardly.

As with most things, we all stand on the shoulders of giants, nicking their knowledge and recycling it. I've just read up on it and taken advice from those who've done it all before.

11
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 03, 2021, 08:12:19 AM »
Thanks.

Breather vents into the right hand filter base, just waiting on the formed silicon hose to complete it, so will post a pic when it's done.
It basically enters the filter base plate from below, much the same as the IAT sensor does on the left side. So it's a vent, rather than a proper PCV style.

When the motor comes apart for the rebuild (pretty soon) and I have easy access to work on the heads, I might add a port into the right inlet manifold and fit a PCV valve.

12
Members Buggies / Re: Prowler - Corvair (under construction
« on: February 02, 2021, 08:45:53 PM »
Made up the engine efi loom today, and ran some bench tests...

TPS:

https://youtu.be/yl3AgfcmGfo

Idle Stepper Motors cycle:

https://youtu.be/qlzDHT1BlDk

Slow injector test:

https://youtu.be/p8IrgIDINck

Fast injector test:

https://youtu.be/iFqtkh_pYMI

13
Members Buggies / Re: my first bug
« on: January 30, 2021, 07:09:54 PM »
I like the Manta Rays.

I could be tempted to build one if I could find a decent donor Mk1 shell.
Maybe even make a mould from it.

14
Members Buggies / Re: Prowler - Corvair (under construction
« on: January 29, 2021, 05:47:09 PM »








15
Members Buggies / Re: Prowler - Corvair (under construction
« on: January 28, 2021, 06:24:54 PM »
Made up the bits today to measure the flow rate of the Yamaha injectors.
The way they’re held / sealed by the throttle boddies meant I had to make a little rig for firing one separately into a measuring burette.

Turned an injector holder/hose tail out of some Brass hexagon bar I had laying about.  Worked a treat.

Luckily, all looks fine, 280cc/min @ 50 psi :)














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