More Twins
 

I finally had a chance to get everything together. Took way longer then I had anticipated but it was worth it! I just wish I would of done it along time ago. Its not any fancy BB Garrett's but it does work good! Spool up starts 13-1400 and no more problems pulling the trailer when its hot out. Its nice being able to go from 3-4 and the boost gauge starts moving with the throttle. Even cruising empty its around 4-5psi with 2-3psi on the primary. No more laggy turbo.

Fits really nice in there, only complaints are I thought the powder coating was going to hide more then it does, the color doesn't help that either. But I was tired of grinding and didn't want to make it to thin. Also the interstage pipe could of been 1" longer to allow the 4-3.5" boot to fit better. But its holding together good and no leaks.

Turbo's are 57/65/.80 - 78/87/1.10. The S478 spools very easily and that six blade wheel screams! Sounds like a Jet at ~25psi!



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Very nice work BigD! :thumbsup:

The black piping looks great, very similar to my black piping. That also looks like a Steed exhaust manifold in there also. Is there an external wastegate in behind there?
Plus the nice BD stainless steel air filter heat shield.

The S478 looks great & it's huge. That will move some air!

Great job & setup all around!

Looks really good!

Nice job :)

Awesome!!!!!!!!! Looks sooo good!!!:cool::cool:
I can't believe how much room there is compared to a 3rd gen!!!!!![laugh]

Thanks guys!! That is a Steed manifold, I believe it was the first one he made with individual runners inside. Now it is a straight open design. No External wastegate. If I can get enough fuel that it needs one, I will add one or put in my S364. I already had the BD CAI so I figured I might as make use of it. The S478 is huge but spools fast with the tight exhaust housing and is still suppose to flow 107lbs/min.

There is quite a bit of room in there, I just changed the oil filter and it was tight getting it in and out put still do able. The piping is quite compact and a little bit smaller 3.5" and 4".

I cant imagine how your setup runs with a BB GT!! Cant wait to see some pics of it. :cool:

bigd450

can you do me a solid?

shoot some pics of your mounting solution for the lower turbo.Iam just starting to fab a mount/bracket and want to see if what iam doing is sufficent?

Good question, I'm curious about the lower turbo mount also.


Lucas here is a thread from CF where I posted some pics of lower turbo mounts. Perhaps it will give you a few ideas.

http://www.cumminsforum.com/forum/98...rbo-mount.html

I used a Source Automotive mounting bracket. Made things so much easier. Mount both turbo's and build the piping to fit. Trying to hold the turbo in there and fab something up wasn't going to happen for me. That turbo is heavy!

Their 12V mount is different then the 24V.


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The VE block and motor mounts are different. That source bracket is for the newer trucks. We typically build our own bracket. The source bracket is too close to the block and causes lots of extra effort to build the down pipe.

Looking good bigD, nice job. We are starting a new twin build shortly. We are going with a S476 (billet) over a S500's (110mm billet). Lots of extra bits and pieces going in this build. Still ordering parts. Going to be a neat street truck.[coffee]

The S478 is an decent all around primary, I was supprised on how well it spooled. Which one did you get?

the steed speed manifold gives me a boner:D

thanks for the pic.

LOL - and pictures just don't do them justice!




Great build BigD. The stainless lines are sweet. May have to do that when I get the powder coating done.

Sounds like a pretty wicked street truck!

Jose called it the LI S478.

Its beyond wicked. I drool everytime I look at it.[coffee]

The LI billet wheels, [duhhh][laugh] Supposed to be 20-30 grams less in weight than the cast impeller. Add in that polished race cover[laugh] price wise it adds up pretty quickly. [duhhh]

The S478 is a one wicked street primary twin turbo.[laugh] Just wished I could afford one.[guitar]

You can see that his big turbo is a cast wheel.