Bill's 200 20v, ign tuning help needed

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Re: Bill's 200 20v, rebuild underway

Postby pilihp2 » Thu Jan 04, 2018 4:26 pm

Awesome. I've been looking to do something like that to my own pan. Just gotta pull it.
-Phil
87 5ktq - 20vt
05 S4 - "Daily"
16 KTM 690 Duke - just because

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Re: Bill's 200 20v, rebuild underway

Postby audios » Sat Jan 13, 2018 12:06 pm

It's in and bolted upImage


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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby audios » Sat Jan 13, 2018 8:56 pm

Getting ready to replace the valve guides& seals, then will need to figure out the head gasket. I have heard you can rebuild/reuse the compression lowering head gaskets. Has anyone done this? It seems you could take a standard MLS head gasket disassemble and reassemble around the compression lowering one?Image


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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby dana » Mon Jan 15, 2018 8:29 am

I think you should run standard compression. With a good ignition tune, you should be safe, and the powerband will be better all around.
current:
-mk4 tdi wagon with some mods
-TDI b3 90q, holset turbo, be strong little connecting rods!
-the turbo tractor
past:
-11 second 90q junker
-20vt swapped 90q winter beater
-efi 10vt 4kq
-way too many other long gone urs's, 200's 4000's, b5's
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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby audios » Sat Feb 10, 2018 6:06 pm

Problem is, I can't afford to have it re-tuned. I had a old crank case tube and modified to keep oil from getting to valve cover. With stainless steelImageImage

Still have the original, but this one should work.


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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby chaloux » Sat Feb 10, 2018 8:32 pm

Many people here could help with an basic ignition tune that won't detonate. Even if you take a few degrees out of the whole map that would help. You can always repurpose a knock sensor to hook up to a set of headphones with a little amp or directly into the cars head unit via AUX in. Then you can listen yourself. I did this in my 4k. Was so handy to be able to plug it into a laptop and record it during a WOT run.
Matt

01 Allroad 6speed - RS4 clutch, catless downpipes, stuklr tune
04 Jetta TDI - DC stage I clutch/14lb fw
DEATH by rust - 96 Audi A6 Avant 2.5l TDI
GONE :( 87 4ktq - 4 FOX SNAKES
DEAD :( - 1996 S6 mit TDI
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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby audios » Fri Mar 09, 2018 9:31 pm

well, the rebuild of the original head was way to much $ so i have just purchased a head from Max (Landfill) and it will hopefully get the car back on the road. I think i would like to use a stock HG, after i get the engine back together and in the car i will look into what modifications i will need to make to the tune.
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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby audios » Tue Apr 03, 2018 8:55 am

Got the new/used head cleaned up 7a cams installed, both head and block mating surfaces cleaned, ARP head studs installed ready to assemble engineImage


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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby audios » Tue Apr 10, 2018 6:09 am

Engine is coming together with stock CR. Will need help setting up VEMS's ignition map at some point. Also going to get an aux radiator squeezed into the front somehow Image


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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby audios » Tue Apr 10, 2018 6:24 pm

More assembly today, much easier on the stand than in the carImage


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Re: Bill's 200 20v, rebuild CRlowering HG?

Postby audios » Sat Apr 14, 2018 10:39 am

After reading a lot about heat wrap, pros and cons, rust and head retention, I decided to build a heat shield out of an old toaster oven panImageImageImage


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Re: Bill's 200 20v,getting closer

Postby audios » Thu Apr 19, 2018 12:51 pm

Back in the garage after years of waiting..... before running i will need to go into VEMS and make some ignition changes to account for the higher compression ratio (stock vs lowered) I have tuned with megasquirt in the past but this is my first vehicle with the luxury of VEMS, i took a quick look at the software on my little tuning laptop and it looks fantastic. would i need to change it a few degrees across the board? or mostly under load?

ImageImage


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Re: Bill's 200 20v, ign tuning help needed

Postby vt10vt » Fri Apr 20, 2018 9:39 am

I like the heat shield idea, I've built similar, but from experience you're going to want to do something about those edges. I still have scars from my sheet metal heat shields.

Regarding ignition timing, honestly I would get it running before messing with anything. You'll likely only need to make changes under high load, so I would get it up and running with what you know will make it run and then worry about fine tuning. If you leave it on spring pressure at least to begin with you should have zero detonation issues.
-Shawn C.
2001 S4 6spd Avant blk/blk - stock daily
2002 01E B6 A4 Built FYF, Built 1.8T, HX35 ~330whp
1989 MC-1 200 Avant- MS1 -Gone but will never forget her lessons
1987 5ktq Sedan - Best $500 beater ever
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Re: Bill's 200 20v, ign tuning help needed

Postby chaloux » Fri Apr 20, 2018 4:06 pm

vt10vt wrote:Regarding ignition timing, honestly I would get it running before messing with anything. You'll likely only need to make changes under high load, so I would get it up and running with what you know will make it run and then worry about fine tuning. If you leave it on spring pressure at least to begin with you should have zero detonation issues.


:metoo:
Matt

01 Allroad 6speed - RS4 clutch, catless downpipes, stuklr tune
04 Jetta TDI - DC stage I clutch/14lb fw
DEATH by rust - 96 Audi A6 Avant 2.5l TDI
GONE :( 87 4ktq - 4 FOX SNAKES
DEAD :( - 1996 S6 mit TDI
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Re: Bill's 200 20v, ign tuning help needed

Postby audios » Sat Apr 21, 2018 11:10 am

Thanks guys, it was running superb before so I guess I'll just start it up without touching anything


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Re: Bill's 200 20v, ign tuning help needed

Postby audios » Sun Apr 22, 2018 10:37 am

Image
Here you can see the Toyota Prius inverter cooler (small radiator to assist the slightly small main radiator) figuring out how to mount it to the IC bracket


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Re: Bill's 200 20v, ign tuning help needed

Postby ringbearer » Mon Apr 23, 2018 11:40 am

Prius parts! That's a first, love it
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Re: Bill's 200 20v, ign tuning help needed

Postby audios » Tue Apr 24, 2018 8:27 am

Hopefully it holds up, it was the correct size to squeeze in behind the IC to add that little bit of extra capacity needed. Today I mounted it up more permanently with a small bracket I made
Image
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