Twins with a B-1

[Strick-9]

Sutton,



That's good info. I'm jealous.



Lsfarm,

Twins obviously work at the sled track. No one can argue that after seeing it in person. But since you asked about the twins I had on my truck, NO. I wouldn't have done as well at the sled pull with MY twin setup because the engine was choked WAY down on boost and power. That's why I took them off so quickly. I have a lot of lag with my current (cam, turbo, converter) combination, but at least it makes good power at some point. I would have done better with an HX-40 and better yet with a bone stock HX-35. But the twins, I used, NO.



Remember with twins that you have to maintain a good pressure drop across each of the turbos for it to work well. If one turbo is VERY small than there will be a HUGE pressure drop across that turbo and the exhaust pressure left over will not be high enough to drive the second turbo. That's the problem I had and that's the problem I see with people wanting to use an HY for a twin setup.



As I do more of my own testing, I'll report what I find. Until then we can all dream on.



-Chris

 

[StakeMan]

There is some very good information in this thread.



Strick-9,

You said there was to much pressure drop across the smaller turbos to spin a bigger turbo. Maybe the bigger turbo needs to be smaller. Am I off track here?

 

[TxDieselKid]

Stake,

I think what Chris might try is a bigger exhaust housong on the HX35. Just a guess though. He could downsize the bigger turbo, but not by much because you can't have them too close to the same size.



Andrew

 

[StakeMan]

Thats what I'm trying to say TDK. You can't have to big or to little of a difference between the 2 exhaust housings. Everything should be in proportion(sp).

 

[Sled Puller]

When you guys get this figured out, let me know!!!



And I'll come spank you.

heheheheh

gene

 

[Sled Puller]

P. S.

The 35/22 is too small.

 

[Rob Thomas]

"Spank", Gene? I'm sure none of us are into that, well maybee Stakeman. BTW Gene, I happend to get pictures of your set-up in the Texas Roadhouse Parking lot at Muncie, before you shut the hood! Now who's laughin'? :-laf :-laf



Later, Rob

 

[Sled Puller]

:--)

 

[Rob Thomas]

Just messin' with ya Gene, you can call off the dogs.



Later, Rob

 

[StakeMan]

Originally posted by Rob Thomas

"Spank", Gene? I'm sure none of us are into that, well maybee Stakeman. BTW Gene, I happend to get pictures of your set-up in the Texas Roadhouse Parking lot at Muncie, before you shut the hood! Now who's laughin'? :-laf :-laf



Later, Rob

Where did that come from?



LOL



I think there should be a poll to see if Rob needs a time out.

 

[TxDieselKid]

to get this back on track.....

Originally posted by Sled Puller

P. S.

The 35/22 is too small.

Gene,

Could you please provide some detail as to how you know this.



Andrew

 

[Sled Puller]

No.

 

[TxDieselKid]

Originally posted by Sled Puller

No.

Where is Nowel, I know he would share with his brothern?



Andrew

 

[HVAC]

Where's Nowel

I'm busy building a twin system for my pal in San Antonio. He just had his head O-ringed today.



Then there's Eric in east Texas who is trying to solve problems with his head gasket. A set of studs are heading his way.



Man, I'm tryin' to fix these boys up!



Then we have a big pull this weekend for diesel supremacy. Loser gets burnt alive in his truck as we cook our hot dogs



I will comment on the twin system in Chris's truck and tell you it is working well. Actually he looked like a jet ski in a tea cup on Saturday as he churned the light soil into the air. He's a topographical eraser in effect you might say!

 

[TxDieselKid]

Sorry Nowel, didn't mean to pull you back into this, just talking a shoot at Gene. It does sound like you need a branch here in Texas though. I could run the place when you are not in town.



Andrew

 

[HVAC]

Done deal TexKid.



See if you can find my bud TexRam for me please.

 

[Sled Puller]

Originally posted by TxDieselKid

just talking a shoot at Gene.

Andrew

TALKING a shoot?

Yes, well, that seems to be a problem down there.



He shoots, he scores. Hockey lingo from up North where ICE is SUPPOSED to be.



Anyway about the small turbo, you see, it is like this... ... , oh dern it, have to go to work.

 

[HoleshotHolset]

Don't exhaust gases... and other fluids... accelerate as they go from a smaller I. D. area to a larger area? This would help us out in a sense... . more fluid velocity from the primary to the secondary..... no?



The primary can't have too small of an exhaust housing... . it just chokes all the flow... .



Matt

P. S. I kinda knew Gene was into that sorta stuff... :-laf

 

[Diesel Freak]

Originally posted by HoleshotHolset

Don't exhaust gases... and other fluids... accelerate as they go from a smaller I. D. area to a larger area?

NO!

 

[HoleshotHolset]

I guess I have been mislead by a head porting dude.....



He was saying that porting exhaust ports on a cylinder head off a turbo engine wouldn't do much good..... as the exhaust will accelerate better from the smaller port in the head into the larger port in the exhaust manifold... . than if both ports were the same size... .



Matt