[somedude]

I know I asked before but I don't remember what you are doing with the cams. Are you regrinding the cams to change the profile? or were they damaged and you are repairing them.

 

[haywood801]

also maybe mentioned earlier:::
Are you pulling the engine yourself? Ive considered this.

 

[Addicted56]

I am having a professional mechanic pull the engine. He has pulled this one a few times so he knows it well and will know it really well after he is done with my engine.

My cam is using the same stage II profile they are using on the BEW engines. Basically it has a slower roll up to the peak so it is not so sharp and then a more rounded peak and longer roll down. Helps preserve the life of the cam is the #1 reason for the design and number two to help it flow better.

The Cams are done but he had to use one of his extras he had lying around. He will let me know in a few weeks if he could find someone to fix my really bad cam. If not I will be paying full replacement cost. Which at this point is just fine by me as I really want it done.

 

[Addicted56]

All parts ordered. There is a back order on lifters thru out the country but that is OK as they should be here by the time Frank finishes up with my Cams. Well he is done but working out how to fix mine instead of giving me his so it doesn't cost me as much.

My Turbos will FINALLY go off on Tuesday. I am going to go pick them up and finally talk with my mechanic and see how things are going as I have not seen the truck since Oct.

Looking like I will go with a 56mm wheel instead of a 60 but we will see. I am going to talk with Mark at Malone tuning and see what he thinks he can do if I leave the stock 18mm turbine. I'm worried there just isn't enough flow out of that and while it will still spool decent I might get problems with surge or over boost if he can't get it out with the controller. I wish I could just go with a 20 or 22 mm turbine but I'm told I can't easily hybrid that part of the turbo.

I will be grabbing my rear cats and taking them home with me as well to do some "modifying"

Sorry nothing new to update. I should get the Cams/Parts/Turbos all back at the end of the month if things go well. Then I give my mechanic about a month to rebuild the engine, fight problems that I'm sure are going to arise and cost me money and get it all put back together so I can drive it the 1st of March.

My fingers Crossed.

 

[Addicted56]

I need to get some more bandwidth.

There is the engine. All of my parts should be here this week. Hopefully start going back together early next week. Turbos in my garage and going off to get rebuilt. A tad bit of play. Bigger is better

Left the cats as were. Can deal with later if a problem.

Hopefully more to report soon.

 

[Addicted56]

By the way these are the smallest turbo's I have seen in a long time. Talked with Mark Malone and did some research on TDI club and there appears to be equivalent turbo's on the 1.9L cars so we are going to go with the 60mm turbo it looks like if my turbo guy can cram it in there. It is just not in size though. There are all sorts of inducers/exducers sizes. It is the size of the inducer on these wheels that amazes me....itty bitty. No room for a larger housing as noted by the pictures though without a bit of machine work.

I guess we will see what we can come up with in a few weeks. Still looking for a 1 March completion date. We will see if we can keep on that schedule.

 

[catalystgod]

If stock turbo placement is an issue for larger housings, have you explored if alternative locations may be used?

 

[Addicted56]

If stock turbo placement is an issue for larger housings, have you explored if alternative locations may be used?

I have not. I imagine with enough money and ability to chop up your hood you could do anything though.

 

[catalystgod]

Well, I like a hood with an intake opening that will cool the turbos down as well. I don't condone the idea of the turbos completely enclosed the way they are in the Treg. Cooking the engine oil in the turbos when engine is turned off is never a good thing.

Also, is the Treg a Sequential small + big turbo setup or just one turbo for each bank and hence both turbos being of identical dimensions?

 

[Addicted56]

It is a true twin setup....where they are identical turbos. I wish it had a compound setup...that would be fun. ARP doesn't make head studs for our engine yet though. Just think of the V10 as two 5 cylinder engines and you can't go wrong....two of everything pretty much. ECU, intake, turbo, exhaust.

 

[catalystgod]

Even the ECU? Damn! I knew everything else was 2 of each.

For the head studs, a quick google search for "Custom Head studs" shows some results of companies that can do custom bolts if they are not already offered in their standard catalog. I'm sure you've already explored that though. What kinds of prices are they quoting?

 

[Addicted56]

For the turbos it depends on a few things. But we are approximating about $750 per.

 

[catalystgod]

I meant the studs....any quotes?

 

[Addicted56]

Ahhh no..I didn't look into it that much. Just for the initial stock replacements and then if ARP had an equivalent. They do for the 1.9L but not our cars. I don't plan on pushing huge amounts of boost beyond stock. I'm mainly looking for a turbo that can push the air I need efficiently without creating excessive EGTs while towing and when romping on it. It will be late spring before I get a chance to work on it much with Mark and find out what tunes work well.

I think once we get the tunes down I will start working with a machinist to get some better intake made. After talking with a few people I agree that that most forward cylinder is probably lacking air significantly. I just don't see how that long skinny intake tract can make it all the way past each cylinder and still have air left that hasn't been fully scavenged by the 4 cylinders before it. i would love to see some of VW's dynamic flow charts/models for that intake. Something told them it was an OK idea but I'm not sold.

 

[catalystgod]

How would it lack air? Since its a turbo setup, wouldn't the pressure in the intake ensure the air density is the same on the intake stroke of the farthest cylinder as it is for the nearest? I'm trying to visualize it but don't understand how there can be any significant difference at all. Any links to additional info?

 

[Addicted56]

How would it lack air? Since its a turbo setup, wouldn't the pressure in the intake ensure the air density is the same on the intake stroke of the farthest cylinder as it is for the nearest? I'm trying to visualize it but don't understand how there can be any significant difference at all. Any links to additional info?

I wish i would have finished my mechanical engineering degree. I guess I need to do some studying up on thermal and fluid dynamics. I see your point though.

 

[Fourdiesel]

How would it lack air? Since its a turbo setup, wouldn't the pressure in the intake ensure the air density is the same on the intake stroke of the farthest cylinder as it is for the nearest? I'm trying to visualize it but don't understand how there can be any significant difference at all. Any links to additional info?

The statement is true only for static conditions. If enough air [think max power] is moving through the system and if the holes are small enough, the pressure at the most distant intake valve can be substantially less than for the others. The ECU(s) cannot account for this unless a LOT of instrumentation is added.

 

[Addicted56]

The final word is in. Without going to a different turbo we are looking at the following wheel. Should be a decent improvement. I was hoping to go bigger but ohh well.

[FONT=verdana, geneva]GT25 Compressor 701374-0006 56x41.6x5.3mm 6\6 Superback
Current GT18 Compressor 52x36.8x4.0mm

I have more research to do like finding maps for these wheels. also the superback has to do with the journals I guess and the way they mount which limits our choices.

Should make a pretty good difference tough. Should have the turbos back and in the shop in about 2 weeks. The final parts to rebuild the engine should have arrived already but I need to follow up to see where they are.

Glad I sent them off. There was a lot of coking and other things starting to wear due to the issues with the camshafts. That and only after 50K miles they had a tad bit of play...nothing serious though.

Here is to cooler EGTs and smokeless power....I have a feeling after the tune we are going to max those injectors out...that would be approx 450HP to the crank.

[/FONT]

 

[Addicted56]

Good news and bad news. Good news is the Turbos are done and all parts are in.

Bad news is I just got selected to go to NTC for a month. So when I get back from our country's example of Afghanistan at the end of March I should have a Touareg waiting for me. At that point it will just be working out the bugs and getting the tune from Mark in.

Looking forward to it. I'll see you guys in about 6 weeks with some pics and real world results (which won't be much until I get the tune in).

 

[haywood801]

" I'm mainly looking for a turbo that can push the air I need efficiently without creating excessive EGTs while towing and when romping on it. It will be late spring before I get a chance to work on it much with Mark and find out what tunes work well."

not to change the subject, but have you actually measured the EGTs while towing or under other conditions? do you have a preturbo TC? our cars dont come stock with any way for the ECU to know that info.