Lucifer gets new Turbo setup!

[Advancedynamix]

Do you have a dyno close by?

[mikemounlio]

I found someone selling an intercooler kit with piping for a b6t! I bought it as well as a turbo for my new shell that i got. The turbo needs rebuilt tho. The intercooler should be a nice upgrade to Lucifer. I will try lucifer with and without it to see the difference it makes 1st hand.

[mikemounlio]

So i bought an evo system for Lucifer! I had a ms kit but i traded it plus cash on my end for the evo kit. So thats pretty cool. its gonna help me clean up the wiring under the hood of Lucifer. Right now its a train wreck.


Opens my options up tho. Now i will have a full rocket chip kit to use with my other b6t motor. I also have the new manifold that i just got. All i gotta do is make some mounts, adjust some shift linkage toss the b6t in hook it up and go! I guess ill be building Britstiva afterall!

[mikemounlio]

You mean G? Lol

MAYBE

[william]

You mean G? Lol

[mikemounlio]

MPH hahahaha not here!!!

[Advancedynamix]

Why such an issue on these engines. I mean look at the focus st, the turbo bolts right to the head. Why don't they have over heating issues also.

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Sequential direct injection for one. Camshaft profiles and timing also contribute. The wastegate size, as well as the overall design of the turbocharger. Add a knock control system that is 20 years further along as well.
Don't be fooled though, these new high tq low displacement direct injected turbo engines are not set up for the kind of power that is beneficial to lap times. These engines all make lots of low end TQ. They are designed for quick spool and fuel mileage.
The tips I'm giving are for a high performance engine build that will make the car faster in a road racing or autocross environment with readily available engine management systems, not to meet industry standards for fuel consumption or emissions output. Direct sequential injection is the cats meow, but price out what it would cost to put that type of system on a b6t.

[FestYboy]

Took a second look: it is a slip joint, and that means the turbo needs to be secured to allow the horns to move freely.

[mikemounlio]

If it was made by dickmyer i think im best off leaving it alone. Im sure he knows more then me... Ill run it as is and see how it does.

[FestYboy]

They might be slip fit on purpose... Welding a slip joint will cause issues elsewhere.

[mikemounlio]

The manifold came in last night! Its not bad. The flange is thin looking. The collector apears non welded! Its welded in place with tabs but the pipes are just slip fit into each other. I will have it welded up the rest of the way. I cant wait to see it on the car.

[FestYboy]

I would suspect the added thermal mass right at the exducer helps keep the temps in check.

[bhearts]

I can't remember exactly what it looks like. "Ram horn" is a description of a typical mid length, equal length 4-1 turbo manifold. They don't always work the best, but in the case of the b6t, any extra runner length is a benefit. The stock manifold places the turbo too close to the exhaust ports and it doesn't take much for the heat to back up and melt the pistons or cause detonation problems. I'd be willing to bet that this design flaw is a big reason why the b6t is 7.8:1 compression rather than the more common 8.5:1 that we see on most fuel injected turbo 4 cylinders from the 1980s.

Edit: just looked at the picture. I don't remember the DAE b6t manifold looking like that. It should work better than the stock manifold. I would move the 02 sensor from the collector to the outlet. I've melted b6t o2 sensors before and it ruins the turbo.

Why such an issue on these engines. I mean look at the focus st, the turbo bolts right to the head. Why don't they have over heating issues also.

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[mikemounlio]

I can get the torque wrench in at all but 1 bolt. I have to use a wrench on most of it.

[FestYboy]

Do it in stages from the center out. Use as short an extension as possible without having to take the torque wrench off perpendicular. Load the wrench slowly. If it doesn't feel right, back it off, inspect the nut for binding on the lock washer, and try again.