Lightman

I dont see a lot of posts from people with twin turbos. I know they're expensive, but how expensive? WHat all is involved in a setup?

When people talk about turbos, they usually associate a specific turbo to a specific power range. I'm sure twins probably will accomodate the highest levels, but how would twins work on a setup with lower levels of power, like 400-500hp?

What are the advantages of twins vs single? Can twins be run at less than max boost and be used for six figure mileage?

I've checked out the piers page.

Push Rod

1) Costs on turbo kits vary, depending on the chargers in use and the quality of the plumbing and mounts. I've seen some dirt cheap setups for $1700 USD, that use the stock turbo as one of the chargers. Its definitely not something I'd ever install on a truck though. A good kit, with decent chargers is going to run you around $3500 - $4000.

2) One of the problems with twins is that they will tend to be laggier than a single, even with a quick spooling bottom charger. For this reason, there isn't much point in running twins until you reach a power point where you can no longer buy a single that will provide enough airflow for a given spoolup. At 400 - 500 HP, there are several chargers will spool quickly and provide you with enough air.

3) In my opinion, the only advantage twins have are airflow for the higher pony trucks. If you're at the power level where a good single will work, stick with the single. Cheaper, less surgery, probably less lag, and less complexity.

Rod

Lightman

Thanks Rod. Plus with a single I can keep my scotty 3

John_P

Lightman:

You might want to go over to the following website and
check out the pictures of their new twin system.

www.scheiddiesel.com

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John_P

Rhino

The opinion of lag with twins seems to vary quite a bit. I think most say their twins have just a touch more lag than the smaller of their two changers (if it were on as a single). Others have told me the lag was the same as the single they are now using as their small charger. I guess every truck responds a little differently.

Lets say you are running a B1, not a KS version, and switch to twins with an HX35/Ht3b combo. I would have to guess spool up to be about the same with those two setups, all else being equal. JMHO

Rhino

Those are the same pics on Haisley's site. I wonder who's they really are?

http://www.haisleymachine.com/TRUCK%20PULLING.htm

J.R. Adkins

I have built a few twin set up's that actually spool faster than the truck did with a single. This is using the same charger (and exhaust housing) that was on the truck as a single. I just messaged it a lil to get it to spool better. If you have never had a set of twins on your truck you dont know what you are missing. They are more street friendly than you can believe. They are not just for HIGH hp trucks. And are worth every penny.

J.R.

Battering Ram

I have a set of rather large twins. I do have a unique fueling combination but my twins spool faster than my truck did when I ran an HX40 with DD2's and TST comp box. I also can drive with no smoke at all during normal driving conditions.

Horace

Idaho CTD

Just think how they will do when you actually make some power

banshee

That setup on haisley's page is manufactured by Scheid Diesel.

John_P

Rhino:

I can assure you that the Scheid Twin Turbo System was
designed by the people at Scheid Diesel. Mike Wood did
alot of research and testing of that system before ever
releasing it.

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I also agree with what J.R. has said about spool-up with the
twins. IMO, they are much better than a single charger!
Every truck I have ridden in with them including J.R.'s was
VERY IMPRESSIVE and if they had "lag" I sure couldn't feel
it!! You want to feel lag???? You should have ridden in my
96' with the regular housing B-1!!! Just ask J.R.,.....he rode
in it and knows exactly what I am talking about!! With that
turbo you would push your foot to the floor,....count,.1001,
1002,.1003 THEN it would take off! Now IMO,....that's lag!!

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John_P

Rhino

Thanks for the clarification.

John_P

You are welcome!

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John_P

guzzirider

Would not twins make a lot more sense on a V engine than a inline????
One turbo for each side??

J.R. Adkins

The word twins is slang for compounds.

J.R.