Vw flat four

Post maps up for others to get them going in the right direction. DISCLAIMER: USE AT YOUR OWN RISK. CONFIRM VALUES!
Boardpaul
Posts: 39
Joined: Mon Jan 02, 2017 11:50 am
ECU Model: S40 Pro
Firmware Version: 60

Vw flat four

Post by Boardpaul »

Evening guys,
Does anyone have a start up map for a type1 engine?
It's a 2276 running twin throttle bodies with 10.5-1 compression ratio.

Thanks

Paul
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Vw flat four

Post by Alex DTA »

If you send over a crank scope, or let me know the sensor position, I can sort something out.
Boardpaul
Posts: 39
Joined: Mon Jan 02, 2017 11:50 am
ECU Model: S40 Pro
Firmware Version: 60

Re: Vw flat four

Post by Boardpaul »

Thanks Alex, When I can get it sorted I will get you a crank scope.
Boardpaul
Posts: 39
Joined: Mon Jan 02, 2017 11:50 am
ECU Model: S40 Pro
Firmware Version: 60

Re: Vw flat four

Post by Boardpaul »

Well its taken some time, but it looks like I'm nearly ready to fire it.

Is the map looking right for an initial startup?
Attachments
Beetlecrankscope.jpg
PT Car.map
(44.51 KiB) Downloaded 315 times
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Vw flat four

Post by Alex DTA »

Close, but not quite.
You're having some drop outs, you can see the gaps in the yellow lines.

You need to move the crank sensor a touch closer, based on that.
When it's correct, you should see the number 35 a few times across the top of the scope, not all the random numbers you're seeing now.
Boardpaul
Posts: 39
Joined: Mon Jan 02, 2017 11:50 am
ECU Model: S40 Pro
Firmware Version: 60

Re: Vw flat four

Post by Boardpaul »

Thanks Alex.

Once I sort that would I be able to start that using the map I have set up?
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Vw flat four

Post by Alex DTA »

It should certainly be close.
Boardpaul
Posts: 39
Joined: Mon Jan 02, 2017 11:50 am
ECU Model: S40 Pro
Firmware Version: 60

Re: Vw flat four

Post by Boardpaul »

well, its cranking but thats as far as I can get it.

Can you provide a base map from the new crankscope?

How can i work out degrees from BTDC using the crankscope?
Attachments
Beetlescope2.jpg
stevieturbo
Posts: 3577
Joined: Tue Aug 02, 2011 12:08 pm
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Location: Norn Iron

Re: Vw flat four

Post by stevieturbo »

mising tooth position can be got very close, simply by looking at where your sensor is in relation to the missing tooth and TDC.

Then when running, verify timing is all good with a timing light. Or you might be able to do this at cranking speeds.
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Vw flat four

Post by Alex DTA »

Based on the scope, 60 or 240 degrees should work.
Start with 60.

Also make sure the ECU is synchronising:
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