Lickity Split

[richie]

Nice   what advance springs do you have in the MSD? also jetting sounds normal for lower altitude but give it what it wants   Do you run much more timing than down the hill?

cheers Richie

[hotstreetvw]

WRONG  I think it has the two light silver springs, which would be the most aggressive curve.  I am currently at 10 degrees @ idle.  I'm sure it would tolerate more timing due to the elevation.  It wasn't something I had a chance to play around with much last year.

Do you have any recommendations?

[hotstreetvw]

So I just double checked the springs.  Looks like I have the two heavy sliver springs installed.  The slowest advance curve.  I remember planning on swapping the springs, I guess I just got caught up in the wiring of the car and it never happened.  So now that brings into question all of the timing adjustments I've made.  Full advance with the two heavy sliver springs doesn't come on until 5500 rpm.

What is going to be a good baseline for springs?

[hotstreetvw]

Found this to answer my own question, two light gray springs with as installed stop (blue, 21 degrees advance)

Damn neighbors, I want to go for a test drive tonight!!

http://cal-look.no/lounge/index.php?PHPSESSID=ninvf9k31m72v4924keeonb5i0&topic=18844.0

MSD document
http://08961cd535df487cd1c1-bda68e188d86291aa366f725b37d442b.r87.cf1.rackcdn.com/8485.pdf

[richie]

Found this to answer my own question, two light gray springs with as installed stop (blue, 21 degrees advance)

Damn neighbors, I want to go for a test drive tonight!!

http://cal-look.no/lounge/index.php?PHPSESSID=ninvf9k31m72v4924keeonb5i0&topic=18844.0

MSD document
http://08961cd535df487cd1c1-bda68e188d86291aa366f725b37d442b.r87.cf1.rackcdn.com/8485.pdf

,
That's it, two lightest ones is what I would go with, did wonder if that was why it was lazy, I always set advance so it has maximum by 3000rpm,and not do it based on idle advance

cheers Richie

[hotstreetvw]

Thanks Richie for pointing this out.  I will test drive this afternoon.  I wonder if this could have been a cause for the serious bog off the line last year.  I attributed most to the engine not being fresh and the altitude, but the slow advance curve could have play a role all along.  Anyways, I'm looking forward to one hell of a year!  The car is going to run so much better!

[Bruce]

The jet stack is currently 70/120 idles, .....  I tried 60s for idles and even though I could get it to idle fine, it had a huge flat spot while driving. 

65s.
What's the altitude?

[hotstreetvw]

65s.
What's the altitude?

6200@ house.  5800 @ track.  Currently 42 vents, third hole, F2s. 
The timing made a huge difference.  I don't have any 65s, but I'll order some in.

[Bruce]

At that altitude, I'd give the 60s another try. 
Unless you're running race gas?

[hotstreetvw]

60s seem to do the trick.  It's amazing how screwed up my timing was and how fat I needed it to make power.  It feels night and day different from last year.

I have a second set of wheels coming to mount the slicks on, and I will be putting radials on the alloys.  It has plates, insurance; I think I need a couple mirrors and we will be ready to cruise the streets.

Engine is 11:1, fk45, I'm running 91 mixed 50/50 with 110 VP.

[Chip]

Glad to hear it's making progress! Can't wait to see how it does!

[Bruce]

Engine is 11:1, fk45, I'm running 91 mixed 50/50 with 110 VP.

At that altitude, I'd suggest reducing the amount of race gas.  You may be able to use straight pump gas.  If so, you'll make way more power.

[hotstreetvw]

I'll dilute with 91 and give it a try.  The bypass system insures its all mixed up.

I got the radials mounted this afternoon and took it out for a test drive.  Felt pretty good until it started to rain...good thing I wasn't on the slicks.

[hotstreetvw]

Wheels arrived and I got the slicks mounted tonight.  Bogarts, 7", 5x130.  I lost 5.6 lbs/wheel for a total of 11.2 lbs of rotating weight.

Last year the car weighted in at 1865 lbs w/ driver.  I have a plan on loosing weight, personally I've given up 15 lbs and plan for at least another 5, maybe 15.  I have a list of things for the car, which includes redoing the D-bars and subframe tie in to drop a couple bars (currently overkill).  I've been waiting on split fenders from Klassic Fab to become available, but after a year of waiting, I'm moving on.  The 3.5-4lb carbon fenders from CC look pretty nice.  Lexan, etc etc, I think I can get the car/myself down to 1750 lbs.  Close to progas weight, with maybe a little more HP.  10s at sea level on motor?

I created a spreadsheet that uses weight and HP to calculate ET using several methods.  I'll post a screen shot tomorrow.  That 125lbs is worth about 3 tenths.

[hotstreetvw]

Weight, HP and ET

There are several factors.  I believe the Patrick Hale calculations better fit the VW, but I could be wrong.  If you have a chance, check your weight, known HP against your best ET.

[hotstreetvw]

Test and tune
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[richie]

Test and tune
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Good luck Will

cheers Richie

[hotstreetvw]

Thanks Richie.

First pass 13.57@99.16, 1.862 60'.  A little faster, a littler more mph than last year.  DA is 7083ft.

Currently 60 idles, 175mains, 200 airs, 32 total.  I'm bumping timing to 34 to see how the mph responds to more timing.

[Chip]

Good luck!

[hotstreetvw]

I'm going the wrong way.  Second run, I thought I was hitting the two step through my shifts, ran a 13.738@97.71, 1.825 60'.  I made a third pass with the two step off, it still felt all over a limiter around 6k, 13.858@94.69, 1.801 60'. Is it possible too much timing could cause this??  It didn't feel like detonation.  So maybe a high speed miss?

Any input would be helpful, thanks,

[richie]

I'm going the wrong way.  Second run, I thought I was hitting the two step through my shifts, ran a 13.738@97.71, 1.825 60'.  I made a third pass with the two step off, it still felt all over a limiter around 6k, 13.858@94.69, 1.801 60'. Is it possible too much timing could cause this??  It didn't feel like detonation.  So maybe a high speed miss?

Any input would be helpful, thanks,

What did you start with for timing?  I would go 2 degrees other way and see what mph is

[hotstreetvw]

I started at 32, then bumped to 34.  What is unusual is the shift light starts flickering and going crazy, like its incorrectly measuring rpm, or the digital 6 is telling it incorrectly.  I've checked all my plug wires, they are tight and well spaced.

[Chip]

Any corrosion inside the distributor? Where are you shifting? Sounds like an ignition issue to me.

[hotstreetvw]

Attempting to at 7k, but really when it hits this flat spot because of the ignition, 6k ish.

[richie]

I started at 32, then bumped to 34.  What is unusual is the shift light starts flickering and going crazy, like its incorrectly measuring rpm, or the digital 6 is telling it incorrectly.  I've checked all my plug wires, they are tight and well spaced.

That sounds like an interference issue with the Digi 6, pretty common, does the twin wire cable from dizzy to Digi 6 cross any other power cables or wires? seen that cause it

[hotstreetvw]

Yes, it runs in the same loom as the coil trigger wires.  I guess you found the cuprit.

[andy198712]

Ha, yeah the wife was happy about my photo shoot.

Nice table.

i literally thought the same two things, looking at that pic 

[hotstreetvw]

yes, my wife's sea stone table is pretty cool.

After Richie's last post I loaded up and headed home.  Maybe MSD should put this in there installation guide...wait, they did.  F

I have pulled the trigger wiring, I need to make a decision on the best way to run it.  It will either be near the alternator wiring (passenger side), or the coil (drivers).  I'm think it might be worth buying the MSD shielded cable.

It was a fun day at the track.  My family came out, we BBQd burgers and hotdogs.  The boys got to watch a bunch of fast cars and also mine.

[BeetleBug]

It was a fun day at the track.  My family came out, we BBQd burgers and hotdogs.  The boys got to watch a bunch of fast cars and also mine.

And while you had fun at the track we got snow here in Norway... dam!

Great updates! Highly appreciated. I hope you can identify the "flat spot" I know a couple of guys have experienced the same here in Norway and it was due to a faulty Digital 6+ unit. Take the car to a rolling road dyno where you will be able to dyno and tune the car safely.

Best rgs
BB

[hotstreetvw]

The track was scheduled to open last weekend but we got over a foot of snow.  I had been impatiently waiting.

I ordered enough 18/2 shielded + drain cable and the MSD plug ends to build my own cable.  I considered the MSD shielded, but at only 6' it wasn't going to be long enough.  The cable + ends came in at about the same cost.

I hear you on the dyno, but it's difficult to pull away from the day job to get to a dyno during hours.  However, the 4" engine will get the full treatment.  Pistons, cylinders and cam should be in this week.