The Official Scirocco Chit Chat Thread!

[TBerk]

goin on a walk-about. I'll see you guys later...

[punchbug]

goin on a walk-about. I'll see you guys later...

Wait, can I come too? Don't be long, we will mmiss you. hard to typewhen a cat is trying to remove your fingers by gnawing...I swear this one is a rodent.

[Eistreiber]

Thanks for the feedback folks. I guess mostly it scares me because I dont know much about it. On the other hand, the other two conversions take a lot of learning as well.

For fuel management, CIS is about as simple and user- friendly as it gets; provided that A] once you get everything working and mixture set right, quit f*cking with it, and B] maintain per my comments and Gordy's.

I learned CIS back when it was an alternative to carburetors, and was the next generation of Bosch FI after the early stuff like '70s Porsches with lots of electronic sensors and expensive finicky bits of impure silicone. CIS is a massive improvement over both; very simple once you grasp the engineering of it, and easy to troubleshoot.

Are you going to be at Cincy?

[crazyaboutrocs]

Order just placed with Crutchfield for speakers and and an amp. Now there will be music in the Slegato.

[Jacob Matthew]

Are you going to be at Cincy?

Unfortunately, no. Id love to but Im not sure Id like to take that far of a trip this early in the ownership of the car. .

My CIS is fair right now, its not giving me any trouble. Its just an enigma, and I have to dive in and learn about it.

[Eistreiber]

Unfortunately, no. Id love to but Im not sure Id like to take that far of a trip this early in the ownership of the car. .

My CIS is fair right now, its not giving me any trouble. Its just an enigma, and I have to dive in and learn about it.

This [BG 44] for cleaning, once a year or so.

http://www.bgprod.com/products/fuelair.html

Don't let CIS intimidate you, eet ees so seemple, mang... let's do a walk- through, OK?

Refer to the Holy Bentley (for your '80 I'm using Bentley for '80- 82 Rab/ Scir/ Jetta, 3rd revised version, copyright 1982. Oughta be close enough).

Go to Section 4, Fuel and Exhaust; look for figure 1-1, "Schematic view of CIS FI".

Ignore fuel tank, pump, accumulator, filter; from the bottom, for now. Simple supply side, fuel at pressure.

Also ignore Cold Start Valve, Auxiliary Air Regulator, and Control Pressure Regulator; all these do is adjust for temporary conditions.


Understand what's left, and we'll work from there. More airflow coming from under the Sensor plate raises the lever, which pushes up the plunger in the Fuel Distributor, thus more fuel.

More air passed = more fuel supplied. Get that? You'll need to focus on the fuel distributor to follow the pressure changes. More air = more up on plunger = more fuel pressure diverted to injectors (leverage = Science, it works).


Eh... I mean no insult, or sarcasm; it's like comprehending a differential, how and why it works. Much easier to understand than to explain, but if you get it, you do.

So we've started with basic simple engine running warm. Understand, then we'll build off that. CIS is simple.

[Jacob Matthew]

I should've mentioned I don't have the Holy Book yet... Don't hate me, please? I get paid Friday, and that's the day I order a couple things.

I have a BASIC understanding of the process. I mean, I understand what you wrote. I guess the things that you mentioned like 'Also ignore Cold Start Valve, Auxiliary Air Regulator, and Control Pressure Regulator; all these do is adjust for temporary conditions.' are the things that I don't understand so much - these are the things that would really throw me off if they went wrong.

And thank you for running me through that - it helps to keep it refreshed and remind myself that it IS simple enough, and I'm really not dumb. No offense taken!

[Eistreiber]

I should've mentioned I don't have the Holy Book yet... Don't hate me, please? I get paid Friday, and that's the day I order a couple things.

I have a BASIC understanding of the process. I mean, I understand what you wrote. I guess the things that you mentioned like 'Also ignore Cold Start Valve, Auxiliary Air Regulator, and Control Pressure Regulator; all these do is adjust for temporary conditions.' are the things that I don't understand so much - these are the things that would really throw me off if they went wrong.

And thank you for running me through that - it helps to keep it refreshed and remind myself that it IS simple enough, and I'm really not dumb. No offense taken!

Well then, get your Bentley. No Hatin' from here, the Book is spendy, I know.

When you do get it, look at the figure, understand how and why the 'normal' running circuit is that (feel free to PM). And we'll go from there, what I said to ignore can come later.

We'll start with basic A/F mixture.

Fair nuff?

[Jacob Matthew]

We'll start with basic A/F mixture.

Fair nuff?

Perfectly fair! Thanks a ton. You can expect a PM in the future (actually, probably several...)



PS: Here's a couple hipsterized photographs for you folks.

In my driveway:


Next to her cousin, my buddy's 84 GTI:

[Eistreiber]

Oh sh*t, sorry all. It seems I've provoked an On- Topic conversation on the Off- Topic thread.

My bad.



But whut the hell... I'm old and had to learn this from scratch, all youse MS junkies might learn something useful from understanding the basics.

I'll run with it.


Open Q to the forum, no prizes awarded beyond being right first; what does an engine's fuel management system have to do?

(hint: KISS).

[85roccoZ400]

[TheTimob]

I'm having a strange new problem with my Megasquirt.

My ignition cuts out randomly.

Megasquirt still sees RPM when it cuts out - so it's not a pickup issue.

The issue is somewhere between the Megasquirt and the ignition coil.

When the car does it, the RPM gauge drops to 0 instantly. Megasquirt sees the RPM slowly fall (because the RPM signal still works), and megasquirt can see it crank.

I suspect it's my VB921 ignition driver transistor. These VB921s are known to fail rather easily. They haven't been used in Megasquirts since like 2010 or so. My VB921 has been in service since July 2006. It has more than 100k on it.

The replacement? The BOSCH BIP373. It looks the same, but it's more rugged, handles higher current, and has a high temperature shutdown mode that protects things.

Article about it:

http://www.diyautotune.com/tech_arti...megasquirt.htm

Link for transistor and mod-kit which includes insulator. $8.50 at the time of this post.

http://www.diyautotune.com/catalog/b...kit-p-230.html

[85roccoZ400]

Red Cars Are Evil

[TheTimob]

I decreased the dwell time of the coil driving circuit to 3.0ms from 4.0ms. Now it doesn't overheat and stall. I also dropped the cranking dwell from 6 to 4. This is probably what killed my VB921 - I was cranking the car a LOT during the injector death thing.

[crazyaboutrocs]

It seems with companies like VW suing, or threatening to sue anyone using their logo, that nobody does floormats with "Scirocco" etc anymore. Do any of you have experience with smaller places that do custom mats and maybe don't care about this copyright crap?

[punchbug]

I should've mentioned I don't have the Holy Book yet... Don't hate me, please? I get paid Friday, and that's the day I order a couple things.

I have a BASIC understanding of the process. I mean, I understand what you wrote. I guess the things that you mentioned like 'Also ignore Cold Start Valve, Auxiliary Air Regulator, and Control Pressure Regulator; all these do is adjust for temporary conditions.' are the things that I don't understand so much - these are the things that would really throw me off if they went wrong.

And thank you for running me through that - it helps to keep it refreshed and remind myself that it IS simple enough, and I'm really not dumb. No offense taken!

Hey, there be no hating' on this board. And no worries about the hesitation, but the best way to gt to trust and know the car is to drive it. If you trust it to drive for an hour or two it will be fine for a longer trip.

That is up to you of course, but I still recall my first trip to Cincy. I did NOT trust my Silver Headache to get me there, and as she got to the meetup spot (an hour from home, on the other side of the border) she chawed right through her rad hose and bled coolant in a nice hot stream towards the other Sciroccos. I was sure that I was going home. Just as I expected, she failed me. I had no idea how I was getting home, but I knew a tow truck and a very messy border crossing were gonna be involved. Served me rioghtnfor having such a dumb idea as driving that far in an old car.

One of the guys I met up with, and who I barely knew, went out to Home Depot, cobbled up a fix, and had me up and running in no time. That first convoy was amazing, and I have not missed a Cincy since. it is an excellent chance to learn about your car, and others "who have been there" may even spot small things to fix on the spot. It's a great group of people, and don't let all the talk of Megasquirt numbers and so on intimidate you. We all had to start somewhere, and I guarantee you are in better shape than I was on that first trip. if you can afford the gas, consider it. If not, mooch a ride and split a room. There is usually someone looking for a roomie. And I bet that car will make it if it runs right now.

[scirocco*joe]

I'm not usually a Rolls fan, but DAMN!

http://bringatrailer.com/2012/05/03/...silver-shadow/

I'd drive it.

[Michael Bee]

I saw that in my email this morning Joe.... only 19 geez... go for it dude!

Erin wont mind.

[16VScirrocco88]

been so long since I drove my car I did not notice this was my car in this pic

[tmechanic]

been so long since I drove my car I did not notice this was my car in this pic

[crazyaboutrocs]

Kitchen cabinets were delivered today. I guess The fact that we've had no progress on this house

[Neptuno]

been so long since I drove my car I did not notice this was my car in this pic

I hope you are ready to drive my under-powered 8v! Has Chris maid contact??

Chris? Take Roger to cincy with you?

[punchbug]

Kitchen cabinets were delivered today. I guess The fact that we've had no progress on this house

Well, I tore my house apart early in the week, then have continually been called LATE to go substitute teach so the mess remains untouched. So there are advantages to not having a stash pile of crap from many years of home ownership. I got called at 10 to 9 yesterday, sheesh.
As for my project, well, I guess this counts as progress in the bank department, and Lord knows these projects ALL need that! I don't even remember what my plane looks like, and I have such a backlog here and at my Mom's that I doubt I will see it for a while.

[Jacob Matthew]

Hey folks - thanks for all the words of encouragement about CIS. I have a lot to learn still, that's obvious.

I got coilovers for the car (yes before a Bentley ) and went to install them and realized I should've done a bit more reading. The one thing I'm really hung up on is disconnecting the top fronts and then reinstalling.

I've read that I can use an impact gun to remove the nut on top of the strut, but that I cannot use it to reinstall the nut afterwards... so, I have to use the spanner/allen key method to tighten them?

[85roccoZ400]

I've read that I can use an impact gun to remove the nut on top of the strut, but that I cannot use it to reinstall the nut afterwards... so, I have to use the spanner/allen key method to tighten them?

I've put every single suspension I have ever installed on using my Impact Gun.

From Scirocco to MKIV to BMW and MB

[Jacob Matthew]

I've put every single suspension I have ever installed on using my Impact Gun.

From Scirocco to MKIV to BMW and MB

Oh... cool then! Thanks, man.

[85roccoZ400]

Oh... cool then! Thanks, man.

Here is my disclaimer.

I am not responsible for any problems that happen while installing your new coilover this way

[Neptuno]

I've put every single suspension I have ever installed on using my Impact Gun.

From Scirocco to MKIV to BMW and MB

Times 2 but I could be soooooooo wrong

[TBerk]

walkabout Rescheduled....

Question from the last page:

Didn't the 1.7 liter block 1st come out in the 1980 model year?

Happy Birthday Keith Haring,
the following pic dedicated to Punchbug, our favourite Educator and her 'affinity' for the Tech.

[crazyaboutrocs]

Slegato inspected. Speakers and amp showed up today.

[Eistreiber]

Hey folks - thanks for all the words of encouragement about CIS. I have a lot to learn still, that's obvious.

I got coilovers for the car (yes before a Bentley ) and went to install them and realized I should've done a bit more reading. The one thing I'm really hung up on is disconnecting the top fronts and then reinstalling.

I've read that I can use an impact gun to remove the nut on top of the strut, but that I cannot use it to reinstall the nut afterwards... so, I have to use the spanner/allen key method to tighten them?

You shoulda bought the Bentley first, IMHO. You can buy parts anytime, but knowledge is invaluable. But... you did what you did, so...

I've put every single suspension I have ever installed on using my Impact Gun.

Me too. Don't make it right, or safe. At OP (read as: top quoted); you need a specific torque value, and an impact will get there, mostly- kinda- sorta- -ish. I've got a few thousand hours using a rattle-gun for whacks Off and whacks On, I can get away with it; I have fairly good intuition for torque in my wrists by now.

Oh... cool then! Thanks, man.

Here is my disclaimer.

I am not responsible for any problems that happen while installing your new coilover this way

Like taking your face off if you do it wrong.

Fair enough... Jake, do you know the forces you're dealing with? F*ck this up and you can easily lose body parts (usually fingers, when the spring unloads), this is NOT something you want to do ignorant. OK?

I am trying to scare you, I hope I've succeeded. If you don't know enough yet to understand the energy stored in a FR strut, you're going to get yourself hurt; not like "scuffed" hurt but like "Well now they can call me One-hand Jake" hurt.

Slow down. Get the Book. Learn.

[TheTimob]

Got my new transistor in my Megasquirt. Now my car works again! HOLY CRAP! It runs better than ever!

I also replaced my broken hood release cable!

But it wasn't meant to be... My power window decided to die. EVIL.

[cuppie]

Well... today, I learned that Cathy's theory of "the VWs talk to each other!" just may have merit.
Reason:
Last Saturday, I put a new fuel transfer pump in Wilda. Wilda is a bit happier now.
Tuesday, the cars were near each other, close enough to talk.
Today, it looks like the Quantum's fuel pump died.

Old cars - it never ends, does it?

[vwdaun]

I got coilovers for the car (yes before a Bentley ) and went to install them and realized I should've done a bit more reading. The one thing I'm really hung up on is disconnecting the top fronts and then reinstalling.

I've read that I can use an impact gun to remove the nut on top of the strut, but that I cannot use it to reinstall the nut afterwards... so, I have to use the spanner/allen key method to tighten them?

You DO realize that the struts are taken out of the car and compressed before even considering messing with the big nut, right?

Get the Bentley. You NEED it to do stuff like this. Ice Karl is completely correct. You can lose body parts over this. Who the hell cares if the car has a "cool" suspension setup if you can't drive it?

[vwdaun]

Question from the last page:

Didn't the 1.7 liter block 1st come out in the 1980 model year?

No T, it was 1981.