Competition dual turbos

[Mark_Kendrick]

I dunno on this one. . I'll see what dramer did on his.

 

[HVAC]

Dozen valver usually have to tap the pan for the return for the lower turbo.

 

[Strick-9]

Jim,



When Cord and I first started installed twins on his truck we just teed the feed oil line and did the same on the oil return line.



We used a clear hose for the return oil to get an idea of the volume and flowrate we were dealing with.



The oil coming from the second turbo was nearly stagnate. It was a very uneasy sight. We made a few runs to test them, but quickly took them off.



I silver soldered a fitting to my oil pan during the rebuild so I wouldn't have to worry about that headache on my truck.



I hear some of the newer blocks (aka storm blocks?) have a plug or something you can use to return the oil easily.



My truck doesn't have that option so I haven't read up on it.



-Chris

 

[Sled Puller]

There is an identical plug on my block that macthes the oil return for the original turbo, a few inches farther back.





I would suggest coming out of the top of the oil filter housing with a complete seperate oil feed line, the Tee makes me nervous.





What happens to yer shower when you flush?? (unless you ran bigger line up to the bathroom and teed with smaller line like I did,hehhee)

 

[HVAC]

Us double dozen valvers have a freeze plug in the block back toward the bell housing that is perfect for a drainback for the lower turbo. We tacked a nut to it and then threaded in a 3" long bolt. A twist and the freeze plug gave up and was easy to remove.

 

[Jim Fulmer]

Sled Puller

There is an identical plug on my block that macthes the oil return for the original turbo, a few inches farther back



Mine doesn't have this plug your talking about, is it forward of the engine mount on you truck?



Chris, were exactally did you tap the pan? The idea of tapping the pan with it on the engine doesn't amuse me in the slightest, guess a guy could always flush it then use a magnet like he did when tapping the exhaust manifold for a probe. I like it when you guys with knowledge post this stuff, get's me to thinking.



Looking yesterday at room to work, if you have the little turbo bolted to the manifold feeding the big one below it would be tight on room, I like HVAC's setup but still want the battery up front, guess I'm greedy. It looks like I'm going to get a bigger turbo this fall so I'm looking at this for a winter project(maybe) using a HX-35 as the little one for driveablity issues and cool to have, not for boost through the roof stuff... ... remember this is my driver, right Chris



Jim

 

[csutton7]

JFulmer--HVAC and I are working on a system that will allow you to have the 2nd battery--it will not be the battery you have now----once we get it dialed in I'm sure we will post some pics of the final installation for all to see--it may be a couple of more weeks before were are complete--it's a timing issue... . chris

 

[Jim Fulmer]

Thanks Chris, I sent you a PM.



Jim

 

[HoleshotHolset]

I can't wait to see the new pics of "Twin Turbos HVAC Style: Version 2. 0".....



Matt

 

[Jim Fulmer]

I can't wait to see the new pics of "Twin Turbos HVAC Style: Version 2. 0".....



Matt, what are you talking about



Jim

 

[HoleshotHolset]

csutton7 said:

"JFulmer--HVAC and I are working on a system that will allow you to have the 2nd battery--it will not be the battery you have now----once we get it dialed in I'm sure we will post some pics of the final installation for all to see--it may be a couple of more weeks before were are complete--it's a timing issue... . chris"



If I remember correctly... . the 1st system HVAC came up with wouldn't allow the use of two batteries in the OEM locations... . the above statement would seem to me to be a second version.



Matt

 

[Jim Fulmer]

I'm with ya Matt, I was just having some fun! I chatted with Nowel via E-mail about it.



Later, Jim

 

[KatDiesel]

Originally posted by MCummings

A P7100 24V can dyno WAYYY up in HP #'s but a VP44 can only go so far. "So far" is about 547RWHP.

I know this post is a lil old, but the white DD truck made 580 something on #2 w a VP44.



There is a threshhold on injectors where you will cross the line of making power vs blowing smoke. What I mean, you only have so much air to burn, people use twins and or nitrous to compensate... . if you don't have one of the two helping you, all you'll get with bigger injectors is smoke, you have to find a happy medium.

 

[csutton7]

Kat--wasn't that a modified VP44 to boot???? you're dead on about needing air to burn the fuel--look no further than HVAC's 600. 9hp on a stock VP44 with diesel and of course twins and then when you add the NOS the hp jumps even more----chris

 

[SlyBones]

Originally posted by csutton7

look no further than HVAC's 600. 9hp on a stock VP44 with diesel and of course twins and then when you add the NOS the hp jumps even more

So HVAC has made over 600 on #2 with a stock VP44 pump? If I read this thread correctly, it used to be about 540-560 range. DD recently went 580 range, and HVAC recently did 600. 9. -- Sure it was using twins, but I dont recall the rules ( un written rules ) excluding turbos, etc. It was straight #2 diesel, with a stock pump, running a box, injectors, etc.



Correct?

 

[csutton7]

Slybones--the answer is yes... . chris

 

[Mark_Kendrick]

Originally posted by SlyBones





So HVAC has made over 600 on #2 with a stock VP44 pump? If I read this thread correctly, it used to be about 540-560 range. DD recently went 580 range, and HVAC recently did 600. 9. -- Sure it was using twins, but I dont recall the rules ( un written rules ) excluding turbos, etc. It was straight #2 diesel, with a stock pump, running a box, injectors, etc.



Correct?

the only rules are an V series pump and #2... . the idea is to get power on an electronically injected diesel.



moded pumps and such are fine... . but a P-pump makes it a 24V 6BT instead of an ISB.



FWIW,

Mark

 

[TxDieselKid]

Originally posted by SlyBones





So HVAC has made over 600 on #2 with a stock VP44 pump? If I read this thread correctly, it used to be about 540-560 range. DD recently went 580 range, and HVAC recently did 600. 9. -- Sure it was using twins, but I dont recall the rules ( un written rules ) excluding turbos, etc. It was straight #2 diesel, with a stock pump, running a box, injectors, etc.



Correct?

What you got to remember is that DD has MODIFIED VP pump that they are running to get those numbers. HVAC, is suppose to have UNmodified VP.



Like I said, suppose,

Andrew

 

[KatDiesel]

Yes DD uses a modified pump... .....



Regardless of how it was made, it was still on diesel only.



They had the "drug pusher" injectors in there, meaning they were using them with nitrous so they are showerheads, which as I stated before there is that power/smoke threshold when using that large of an injector. This is just something I noticed in Vegas.

 

[csutton7]

HVAC's pump IS UNmodified--chris