1641cc twin scroll turbo

With Turbo and Super charging you can create massive horsepower with vw motors.
70dragbug
Posts: 534
Joined: Sun Oct 27, 2002 1:01 am

Re: 1641cc twin scroll turbo

Post by 70dragbug »

It sounds like a loose connection or a poor ground signal somewhere.Or maybe your coil itself is the problem.
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

no the coil self is the problem it is too close to the MS and relaisboard and the modul. found it out Yesterday. some wierings i did new and they become also really next to the coil i thing that was ist. droveyesterday with just shorting those and had no problem. but i hace to to it now right because i have to make it all new vor the later licence and want to change some stuff vor hte later twintwin too and want it look like a serial car setup. so thats the next plan. this time i also will put the coilpack into the engine bay.
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Munchhausen
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Re: 1641cc twin scroll turbo

Post by Munchhausen »

Sounds reasonable. [Klugscheißmodus=an]
When making new wiring: seperate sensor wires and actuator wires as far as possible. Dont use sensors which get their ground from their housing (extra groung wire is required). All sensor groundwires should go seperated to MS.
If actuators left which need extra ground conection (e.g. ignitionmoduls). Connect their ground and MS ground to one point. When using engineblock as common groundpoint, check your groundconnection between gearbox and chassis. [Klugscheißmodus=aus]

munch
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

Munchhausen wrote:Sounds reasonable. [Klugscheißmodus=an]
When making new wiring: seperate sensor wires and actuator wires as far as possible. Dont use sensors which get their ground from their housing (extra groung wire is required). All sensor groundwires should go seperated to MS.
If actuators left which need extra ground conection (e.g. ignitionmoduls). Connect their ground and MS ground to one point. When using engineblock as common groundpoint, check your groundconnection between gearbox and chassis. [Klugscheißmodus=aus]

munch
this is all how it should be.
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

problem solved today. hat the problems again and found out my ignition spark looked just like a dark hair and not like a strong spark.
my spark plug gap was too big but it was cool..i don't know why but my used edis coil had spark blowout tiny over 0,4 bar with the big gaps but first rum 0,75 bar all the time very fine. i bet the time is come for it. lowered the gap to 0,6mm (0.024") and used a accel coil and all was fine. did a short trip with step under 17psi and wow. way to much for open street use and that with 0,9 lambda and very save ignition. i am happy now but have to buy a new coil the one i used was borrowed from "34plus2" and has to come back in his 2,4 typ 4 engine plus headed m90 supercharged oval bug next week....can't wait to see that beast running!!!

latest next month i will make some videos also from the boost and how it build up ;)
wishes
chris
miniman82
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Re: 1641cc twin scroll turbo

Post by miniman82 »

Same thing I found, EDIS does not like big gaps. I think maybe with one of the aftermarket coils you might do better, but I've been running on a .025" gap for so long I don't think I could do better with any coil.
Image
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Munchhausen
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Re: 1641cc twin scroll turbo

Post by Munchhausen »

Great you found the problem. 8)
By the way, you can go Cops with edis module. :wink:

Does anybody know some specs about the edis coil like spark energy, voltage?

munch
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

miniman82 wrote:Same thing I found, EDIS does not like big gaps. I think maybe with one of the aftermarket coils you might do better, but I've been running on a .025" gap for so long I don't think I could do better with any coil.

found out stock has 30000volts
accel that i tested has 42000volts. thats the route i will go now. but the day will come with coils on plug when i go twin twin.
i will allways stay under 2 bar of boost. and i will test it if the accel coil can do it. then it can stay ;) because of the simplicity it is.
next steps is testing and tune it for the 1,5 bar max. i will use on this setup. starting with the waterinjection too. hope the engine how it is can handle 1,5 bar with 95 octane thats the plan.
then dyno it! and see what it can to at 1 bar and in compare 1,5 bar with a cb2280 cheater cam ...haha.
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Wally
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Re: 1641cc twin scroll turbo

Post by Wally »

Waterinjection, especially with 50% meth, will make the 95 octane behave like 102+ :wink:
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

yes but it will become the safeguard. will first see if i can get it without water/meth to 1,5 bar. but for sure it can bring some degrees in ignition back.
at the end i also play with using E85 again. on the 1200GT with the same turbo i hat 1,3 bar on E85 with 8,2:1 compression...and this timing.Image
it was far away from pinging.had 2 more degree on the top with full bost once to check if there will come something and nothing but 24/25° was the most my balls wanted to have there.

the waterinjection is in that car since my supercharged 36 hp engine with 0,9 bar and alot of rpms but never used it on a turbo...so it's time for it + some real boost.
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

btw. methanol is 116 oktane? right? or 160? don't remember anymore.
E85 the most people bet its somewhat around 105-110 here in germany.
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

so today 18 psi but had tu pull the ignition down to 18° at full boost, with 95 oktan fuel i will next do 98 oktan and start with waterinjection.
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

long time no update so here it comes:

had a raceweekend. stupid was it was just 150m but went to it just for fun. but again had spark blow out. damn this edis modul is not done for real boost it starts at 0,7-0,8...so i turned the bost down. very hot day 29°C when i arived at the inspection they told me that the "renn-opa" aka "race- grandpa" is there he is a legend here and well known all over in germanys race scene. damn i ever wished to talk to him and now i drove against him , has his phone number and drive to a race with him in sempember again, a dream come true. and he is fast with his bug. he is totally a homemade man. old car not looking fast. slicks + 125 in front, just one seat, homemade exhaust, homemade cup-bars, also homemade RPM gauge in place of the tach. he is very fast from the starts. after 15m he was allways one car in front of me. very nice setup his car. its just a 1776cc with 40 idfs but i could see he has big vents in it and he shifts at over 7000RPM he said. for that short track he just shiftet ones. i with mi spark plow out rov limiter had to shift in 4th gear befor the track was over :( but is was my fault because i gave him more boost after the first race where i just was a little faster than he bit lost too much meters after the start with my 195/65 r15 on 1,8 bar...the end was i had to shift befor 3000 rpm in fact of spark blow out. but nothing brakes, the car goes straight like on a line and i have to learn alot, specially starts and to take it easy , but to meet one of my idols let me act like a child.
at the end it was a super weekend and now i need more traction, and more boost. haha nono not that much more boost i fould yesterday the problem. again spark gap it was tini with 0,6mm but now with 0,5mm (0.02") i can handle 1,2 bar of boost again and this over my hole rpm...no when hit full boost at 2nd gear i had wheel spin.
is there sometihing that i can do ? for sure direct coul right? damn but i think its time for it. this spark gap is way to small in my eyes.
why is that with ms1 extra and edis so? are there tricks to solve it? i mean i use a accel coil right now but what can it do when the mudul do the dwell on it??
every trick is welcome

soem pics of the weekend:
before inspection
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last check to solve the ignition probs wia tunerstudio :(
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first meet up with heinz
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huge croud and sun. damn nice day
<a href="http://www.pic-upload.de/view-14953886/14.jpg.html" target="_blank"><img src="http://www7.pic-upload.de/03.07.12/hp2utttr32al.jpg" alt="Bilder oder Fotos hochladen"></a>
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and the winner was? for sure "renn-opa" we was about 40 cars 4 bugs, 1 356 cabrio with super 90, 1 mg roadstar and the rest was hot rods some was really fast that day. he and me was the only aircooled in the finals
Image
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panel
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Re: 1641cc twin scroll turbo

Post by panel »

The old school pin up look must be big over there?

What's the specs on the red car?
'65 Bus with a JDM Subaru EJ20 Turbo
Built by Germans powered by Japanese and brought together by Canadians
my_medusa
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Re: 1641cc twin scroll turbo

Post by my_medusa »

it was a hot rod event called race61.
the red one is nothing special.
but all is done in a perfekt way and works together very well.
all i know:
1776cc
40 weber idf with big vents.
idles like a champ around 800rpm
he shift around 7000rpm
and he is fast from the starting line
125 r15 in front
slicks in rear (no size in them)
homemade exhaust
homemmade cup bars
just one seat all other stuff is out of the car
i know his best time with his old engine was 14,091 on the 1/4 mile but he said the new one feels faster. maybe he will get into the 13?? this is the video of his best time 2010 at bitburg not bad for a old man and a 1776cc car.
http://www.youtube.com/watch?v=5xlXP2b7azA

he in person is like me from the old GDR (DDR) and also races in the old days in that time there was nearly nothing to get for a vw beetle.
what i also found:
http://www.youtube.com/watch?v=ZrVoYJyWs7A
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