Julian's '91 200 20vt

[Aktapod]

Guilty. Thought I'd screwed up the timing, and the valves were hitting the pistons. Nope. Forgot it was in gear.

[88a5tq]

Lol. I didn't think anyone else would admit it on here.
It runs. I have to check some stuff with the computer tho. If I apply the gas at idle it almost stalls but catches again. Maybe a trigger

[88a5tq]

It's alive! Yep we thought it was messed up but it was actually my tps was unplugged and the poor warmup settings . It's back home away from that lunatic but now im afraid to drive it lol. I made sure I got it up to operating temperature before shut down. I had what sounded like one single loud lifter but I never got over 3K rpm during the 4 block trip home so I blame that. Im sure it will clear up as it didn't sound bad per se. I have very little smoke from what im assuming is the mating surface of the wastegate and manifold since there is not gasket there from the factory either. I regret not using copper spray there in copious amounts (fuck).

Alright well thanks for everybody's advice thus far!

[88a5tq]

I think I'll put the blown gasket on the rear windshield shelf after I carb clean it. I think that's a fitting spot for it don't you?

[AngryTaco]

Lol. Did you use studs or bolts? Im sure you mentioned it but im too lazy to click the lrevious page button. Or correct anu phone errors in that last sentence. Or that one

[88a5tq]

Hah ya I went ARP FTW

[AngryTaco]

Good. No more blown gaskets for sure.

[Aktapod]

I think I'll put the blown gasket on the rear windshield shelf after I carb clean it. I think that's a fitting spot for it don't you?

I hung mine up on the wall like a hunting trophy.

Glad you got her running again!

[AngryTaco]

The real question is.....

Did you clean up the shop!?

[88a5tq]

Dude I cleaned that shop twice already! I wasn't about to do that shit a third time. He turns it into a shit hole over a period of about 3 hours anyway. He spent the day insulting me again. As soon as he saw me looking at vemstune he changed his tone. not sure if he was breaking my balls but he was being real irritating all weekend.

Thanks Sven, I must have missed alot on your thread. I didn't even realize you did yours.

[loxxrider]

Make sure you re-torque those ARPs. Otherwise, you will be replacing that head gasket again. Retorque after a GOOD heat cycle at full boost.

[AngryTaco]

^

x2

[Audischwagon]

Spidey senses tell me....good things are happening in Erie....

[88a5tq]

Oh no kidding I didn't think that was gonna be needed. Definitely will thanks. Well look who made it over Schwagon

[88a5tq]

You guys think I should drop timing up top before this pre-re-torque run today? Marc said my timing looked ok after the HG went out.

[AngryTaco]

Do whatever Marc says honestly. I always retorque mine after beating the shit out of it over 100 miles

[loxxrider]

Yeah, I'd go with what Marc says assuming you've checked timing with a light.

[88a5tq]

Lol yep Marc just informed me I need to check that

[88a5tq]

I've asked all over locally with shop friends except the Audi dealer guy who's difficult to reach after work. So I guess im pointing the gun at the flywheel and the electrical probe goes on the cylinder one plug somehow (still need to borrow the gun) and see if the firing degree matches what's in my rpm vs ign table for that area and spin the distributor to make it match? Good lord don't judge me lol.,maybe I didn't listen well enough'..

[loxxrider]

No, you can't adjust timing with the distributor on a 3b. You have to do the adjustment in VEMS. There is a way to lock the timing, but I forget the exact path for that function right now. When you do that, it will hold timing at say zero and you can see the timing mark on the balancer line up with the timing mark on the block.

[88a5tq]

Dang I better hit the wiki! I noticed today when I got the courage to drive the car that it dives pretty well above 2800 rpm. Below that though and it feels like NO power. Get 10psi easy before 3K rpm but just no freaking power. I used to cruise at 2k but didn't need to shift to pass but this is very strange. Lots of nasty choking coolant exhaust was blown out after warmed up. People were staying waaay back after leaving lights haha. I could barely breathe it was so bad. It cleared out though and I had zero errors come up on the dash. It's exciting shit.

Thanks Chris!

[loxxrider]

Get the timing light on it first thing. Then post logs if it checks out.

[88a5tq]

Ok I got a nice guy at work I can borrow it from. This looks legit:

" Vemstune makes the process pretty easy. just go under base setup->primary trigger settings.

at the bottom of the page where it has a drop-down that says "defaults", select 5cyl_60-2. it will set a bunch of things on that page. burn the settings.

Now go to your ignition outputs visual page and make sure all of that stuff makes sense.

Next up is the really important part, which is zero-setting your ignition timing. where your flat teeth are can vary from setup to setup, so to dial it in go to tools->ignition lock and set it to some small value, I usually use 1 degree (you'll need a dial advance light set at 1 to make it line up). alternately you can edit your timing map so it cranks over at 0 degrees. entering "0" into the ignition lock disablesthefeature. Grumble.

so with timing locked at zero, go to the base setup->primary trigger settings visual page. flash your #1 wire against a known TDC cyl #1 reference mark (flywheel, balancer, whatever). if its off, adjust your "TDC After the trigger" setting until it does line up. If you have to move your value under 60, or you run out of adjustment on the top end of the field, you'llneedto shuffle your ignition output order so that it can be within that range.

dont forget, you need a cam sync for this to work. no wasted spark 5 cylinder possible on vems due to a firmwarelimitation (only 8 ignition phaseentries.you need10minimum to do waste spark on a 5 cyl.I've asked for it, probably a coming soon feature).

before any of this matters, you need triggers first. if you dont get any spark check your triggerlog to make sure the wheel is being read properly by the ecu."

Also my log is below in case that is necessary at this point for anything. Maybe not though UHHHHH its too large? LOOOL and motorgeek doesn't allow me to upload anything that has to do with VEMS!

[88a5tq]

SCore!

Configuring Ignition

In the 'settings' -> 'Priming, Cranking, Afterstart' window in megatune you find a field called 'Crank Advance(deg)' set that to 0 for now. That will make it easier to set the base timing.

Now make an easy to see mark at #1 TDC on the pulley and strope the engine when cranking. In the 'Settings' -> 'Trigger settings' window in megatune you find a field called 'TDCafterthetrigger(deg)'Changethevalue in that field until the timing light show that you have 0 deg timing when cranking.

If you need to set more then around 75 - 80 degrees in that window you should increment the 'Trigger tooth' field in the same window and try again. Each increment will lower the 'TDC after the trigger(deg)' with six degrees.

After you are satisfied with the settings you set the 'Crank Advance(deg)' to 10-15 degrees. You will need to experiment with the advance, this is part of the tuning process. You may find that a level that acceptable for cold start causes problems when the engine is warm.

[Marc]

assuming you dont start the engine (disable the fuel pump or whatever) then yes, that wiil work. easier with a running engine to use the ignition lock feature, enter ".25", then strobe for a tdc mark on your flywheel or cam gear. bump tdc after the trigger till it lines up.