GOLFMK8
GOLFMK7
GOLFMK6
GOLFMKV
  • Has your username changed as part of the site merger and want it changed back? If the other version of your username isn't being used, send Gulfer a PM and we can probably fix it for you

Big(er) turbos and the 1.8

Hornung418

New member
Chuck's failed because he was running R injectors on the stock hpfp. He was is38 100 octane with jb4 stack and e30
Thanks, Dad!

So his was never properly tuned?! I should expect some more reliability out of my car with a UM tune, and just work with the stock HPFP and injectors until y'all can sort out the cold start idle issues with the 2.0 HPFP.

Just 7 more business days and I'll have my car back!!
 

TwinDad

Drag Race Newbie
Location
Fort Lee, NJ
Thanks, Dad!

So his was never properly tuned?! I should expect some more reliability out of my car with a UM tune, and just work with the stock HPFP and injectors until y'all can sort out the cold start idle issues with the 2.0 HPFP.

Just 7 more business days and I'll have my car back!!
He was pushing more fuel through the injectors than the stock hpfp could keep up with. He was only using the jb4 for logging and it doesn't log enough parameters to pick up the one injector going lean.
Seeing that an Alltrack with heavy ass tires pushed 390awhp, I would think that a light wheel set up would easily see 425whp and less strain on the drivetrain and engine than those heavy ones
 

ZuMBLe

Drag Racing Champion
Location
NY
Ride
Alltrack 6MT
Bumping this thread from the dead.

Unfortunately, my IS12 has siezed it's waste gate actuator at 53,634 miles. Fortunately for me, I have been holding onto a DBV2 journal bearing turbo for nearly 9 months and this presents the perfect time to get this installation done!!

View attachment 163751

The existing modifications to my 2017 GSW 4motion 6mt are as follows:
  • Revo 3" catted downpipe
  • IE intercooler
  • IE Carbon intake
  • South Bend Stage 2 Enduro SMF clutch kit
  • APR IS12 stage 2 ECU tune @20k miles
  • Porsche 996 Carrera Brakes/ 330x28mm Mercedes vented and cross-drilled rotors
A potential list of necessary modifications to run properly include:
  • Precision Raceworks 925cc MPI kit
  • Precision Raceworks Stage 3 LPFP kit
  • GTI/R 2.0L direct injectors?
  • GTI/R 2.0L HPFP?
  • Flex Fuel sensor
  • United Motorsport ECU and Haldex tuning
I am highly concerned with the strength of the internals. But I have a contingency plan to swap a GTI block and retain the 1.8 head for management reasons if things go sour.

Does anyone know why Chuck G's IS38 4mo GSW failed? Was it fueling? Does anyone know the power limit of this engine?

I am well aware of the capital infusion I am dumping into this car, but the idea of a stupid fast wagon has always been on my list, and now is the time! I have been in touch with Fred@UM and he is ready to make it happen.

Contact DBV2 and make sure that turbo is good. Had a local around here that got an early DBV2 that had problems. Doesn't hurt to check before putting it in.
 

J Peterman

Passed Driver's Ed
Location
USA
I’m planning a similar route in a ‘19 1.8T 4mo GSW with a TPC20 (IS20 hybrid), ROW intake manifold with MPI rail, PR450 LPFP & harness, and Bosch 980cc injectors for the secondary fuel rail.

My understanding from doing a lot of reading here (and talking to Fred & others) is that MPI/LPFP is really what you need on the 1.8T to run a hybrid with full fueling. I don’t think the 2.0 HPFP & R injectors are needed, at least Jaryd’s AT has been running 10k+ miles just fine without them.

Other supporting mods: Macan brake upgrade, Milltek catted DP, AMS IC, BFI S1 engine/tranny mounts, powerflex DB insert, R RSB/Moog endlinks, MSS Sports springs, wheels/tires, TTRS clutch.

Currently everything is sitting in the garage off the car, other than the wheels/tires/RSB/MSS kit. I’m totally stock power-wise at around 8.5k miles. I’m waiting to see if EcuTek supports the 1.8T so I can potentially get a remote dyno tune via EQT. Otherwise sounds like we’re planning a similar project via UM, yours being more urgent due to your OEM turbo blowing up.

Good luck and let us know how it goes! Not many people have gone this route yet and several of us are waiting on the sidelines.

I was also reading comments on TPC’s social pages that they’re planning a smaller “Stage 1” IS20 hybrid for the 1.8T (the “Stage 3” TPC20 that I bought apparently maxes the wheel sizes in the IS20 housing), which might not require this degree of fueling mods...

Might be worth giving them a call.
 

Hornung418

New member
He was pushing more fuel through the injectors than the stock hpfp could keep up with. He was only using the jb4 for logging and it doesn't log enough parameters to pick up the one injector going lean.
Seeing that an Alltrack with heavy ass tires pushed 390awhp, I would think that a light wheel set up would easily see 425whp and less strain on the drivetrain and engine than those heavy ones
Excellent to hear. I have Neuspeed RSE10 18x8 and 225/40/18 PS4S for summer. Should be a riot when all is said and done.

Contact DBV2 and make sure that turbo is good. Had a local around here that got an early DBV2 that had problems. Doesn't hurt to check before putting it in.
My Turbo is #137 and we did a huge group buy here in Maryland. I've spoke with Daniel several times about being the first 1.8T with his turbo. I went with Journal just to keep the engine mostly in one piece while we test the limits of this engine. Just to mention, I have a GTI block that I got for $350 from a 10k mile engine. So there is always that path should we get there.
 

tplociniak

Ready to race!
Location
NEPA
Ride
2017 Alltrack SEL
Excited to see what others do. I'm IS38 UM tuned currently and want to push it a bit more. I have a 2.0 HPFP and S3 injectors that I was looking to install along with UMs ProFkex kit but Fred told me he didn't think they would be able to support those mods, which is different from what I heard before. Not sure where to go with it now, try to get those items sorted out or just go MPI
 

TwinDad

Drag Race Newbie
Location
Fort Lee, NJ
Excited to see what others do. I'm IS38 UM tuned currently and want to push it a bit more. I have a 2.0 HPFP and S3 injectors that I was looking to install along with UMs ProFkex kit but Fred told me he didn't think they would be able to support those mods, which is different from what I heard before. Not sure where to go with it now, try to get those items sorted out or just go MPI
I'm on the 2.0 hpfp with Reflect tuning. I'm not sure if he has tuned beyond is38 for the 1.8 though. If you go port injection with UM though, you won't need the larger injectors and hpfp. The mpi will be delivering the extra fuel needed. So it just depends on what fuel delivery method you lean on for the demand
 

J Peterman

Passed Driver's Ed
Location
USA

Part #’s for the ROW intake manifold, secondary fuel rail, harness. Mine came off a sub-1k mile ROW Mk7 CSS with everything included, shipped from Holland for ~$200. Good low(er) budget OEM option.

Just need to add injectors, LPFP, PR/CTS harness and custom tuning.
 

J Peterman

Passed Driver's Ed
Location
USA
Oh, and a fuel “T”. Unless you want a shiny billet CTS/PR secondary fuel rail, in which case the holes are already drilled into the ROW manifold to install.
 

Diggs24

Autocross Newbie
Location
de plains! de plains!
Ride
2015 GTI; 2003 Saab
crxgator ran the DBV2 on his 1.8 awhile back.

 

TwinDad

Drag Race Newbie
Location
Fort Lee, NJ
This discussion has quickly gone above my pay grade but I’m curious to see how these builds pan out, especially the limits of the 1.8T’s cast internals.
What's cast? The crank is the only non forged. Its nodular iron. I'm guessing if everything else is tuned properly, that may or may not be the weak spot. Ringlands can go even on forged pistons though if they are the weak spot
 

Hornung418

New member
Excited to see what others do. I'm IS38 UM tuned currently and want to push it a bit more. I have a 2.0 HPFP and S3 injectors that I was looking to install along with UMs ProFkex kit but Fred told me he didn't think they would be able to support those mods, which is different from what I heard before. Not sure where to go with it now, try to get those items sorted out or just go MPI
I am using UM for my build. We are using PR MPI and Fuel Pump upgrade to get the 400+WHP I am after. I'll add the flex fuel sensor and tune for that as well. We are modifying the stock intake manifold to fit the MPI fuel rail, since it will take over a month for a Euro manifold to arrive and I need my car back ASAP. I am stopping by the shop today to inspect as it has been 4 days since I dropped it off.
 

TwinDad

Drag Race Newbie
Location
Fort Lee, NJ
In the Dragy thread the experts said the 1.8T has cast pistons and rods.
Nikolai who now owns Chuck's car has had a few of the 1.8 engines apart. He said the rods and pistons are forged. I believe it is in VW specs that way as well. He said there wasn't too much difference between the 1.8 and 2.0 gti pistons and rods when side by side other than the little bit of length difference. The crank on the other hand has smaller journals and counterweights. It weighed 7lbs less. That is huge. The lighter weight, smaller counter weights and shorter stroke all mean that it will endure less stress on it. It is still weaker being nodular, but I ran over 500lbs of torque on a nodular crank before in a V8. Never had issues.
 

Hornung418

New member
Nikolai who now owns Chuck's car has had a few of the 1.8 engines apart. He said the rods and pistons are forged. I believe it is in VW specs that way as well. He said there wasn't too much difference between the 1.8 and 2.0 gti pistons and rods when side by side other than the little bit of length difference. The crank on the other hand has smaller journals and counterweights. It weighed 7lbs less. That is huge. The lighter weight, smaller counter weights and shorter stroke all mean that it will endure less stress on it. It is still weaker being nodular, but I ran over 500lbs of torque on a nodular crank before in a V8. Never had issues.
Dear lord, that is a huge sigh of relief!!! Can't wait to see how far we can push it.
 

Hornung418

New member
I heard my car start this afternoon! It's leaving tomorrow to get tuned, and I should have it back on Friday! Also found an exhaust leak at the DP to Catback connection. Gotta find a solution for that.
 

TwinDad

Drag Race Newbie
Location
Fort Lee, NJ
My Turbo is #137 and we did a huge group buy here in Maryland. I've spoke with Daniel several times about being the first 1.8T with his turbo. I went with Journal just to keep the engine mostly in one piece while we test the limits of this engine. Just to mention, I have a GTI block that I got for $350 from a 10k mile engine. So there is always that path should we get there.
Crxgator ran a DBV2 on his 1.8 alltrack like a year ago. So you wont be the first. I know he had a really hard rim with it spooling on the 1.8. I think they were suspecting that the no vvtl on the exhaust cam was the issue. Maybe a more aggressive lift on the exhaust cam could help. It's been mentioned that the last gen GLI exhaust cam may have more lift, but no one has actually confirmed it. It doesn't have vvtl.
 

Hornung418

New member
Crxgator ran a DBV2 on his 1.8 alltrack like a year ago. So you wont be the first. I know he had a really hard rim with it spooling on the 1.8. I think they were suspecting that the no vvtl on the exhaust cam was the issue. Maybe a more aggressive lift on the exhaust cam could help. It's been mentioned that the last gen GLI exhaust cam may have more lift, but no one has actually confirmed it. It doesn't have vvtl.
I am going to use the GLI exhaust cam when I go 2.0L and by then I'd like to upgrade to the TBB. I currently have a V1 Journal Bearing.

Yeah I had a dbv2 v2 over a year ago. See if you can get the v1 TBB instead.

I remember that you had it, but when your engine failed, you went with the GLI engine swap. Did you keep the DBV2?
 
Top