Engine/Transmission (1994 - 1998) Need Ideas for Twins

[BigYellowIron]

where are you guys putting the secondary turbo oil drain at.



I know on the 98 they have another hole in the block right?



But where are they going on the earlier ones. .



Adam

 

[BigYellowIron]

I guess you cannot get a wastgated housing for the Ht3?



Where are you guys getting the external Wastegate?



Adam

 

[HVAC]

Secondary Oil Drain

You'll need to knock a hole in the pan Adam.



Weld a bung on there.

 

[BigYellowIron]

I was thinking that, but I thought there might be another method.



Thanks



Adam

 

[83 crew cab]

thaks Nowel I was just getting ready to ask if any body know whatthe oil level in the pan was so I could do that George

 

[Jim Fulmer]

Where are you guys getting the external Wastegate?



http://64.225.76.178/main.htm



www.turbonetics.com



HVAC is right you have to tap the pan, it is said that the pan needs a baffle in it for the new drain, came from a really reliable source. I have heard of using the factory drain for both but I won't chance that!



The HT3B doesn't need a wastegate!



Jim

 

[HoleshotHolset]

I have seen a lot of twin turbo setups (both diesel and gasser) that use one big drain for both turbos..... if it works... . more power to 'em.



The late 12-valve and all 24-valve trucks have it made... . they have two drain bosses on the block... the back one is just covered up with a freeze plug.



Matt

 

[Jim Fulmer]

I have seen a lot of twin turbo setups (both diesel and gasser) that use one big drain for both turbos..... if it works... . more power to 'em.



Matt, thanks for chiming in, I guess it comes down to I've never seen it so I would question it, but that big of a drain should work in theory.



Twins on a gasser, now that I would like to see! Heck I even had a chassis guy that builds $100,000 race cars checking mine out and asking how it all works.



Jim

 

[HoleshotHolset]

There's just something about a 1000+hp oddfire twin-turbo V6 that makes me happy... ... They sound INSANE too... .



I've also seen a few twin turbo (non compounded) Detroit Diesels (6V-53's) that used the one big oil return method... . and they've had no turbo related issues. Crankcase pressure... . now that's a whole 'nother ballgame.



Matt

 

[Mark_Kendrick]

The PRIMARY is the 1st stage of compression... generally the big turbo. The SECONDARY is the second stage of compression... generally the little turbo.

why would u want a pdr 40 as a primary instead of a pdr 35? just wastegate it before the primary

Wish I'd thought of that! How's it goin Jim? I ain't heard from ya in a while.



FWIW... Jim did a first rate job on his compounds.



The REALLY LARGE wategate allows you to use a very small exhaust housing for bottom end performance w/o choking off the exhaust on the topside.



I vent my wastegate before the primary to drive it even harder once the secondary has had enough. Using this method I can limit boost to under 45# w/200hp injectors. When I tighten down the gate I can break things

why would u want a pdr 40 as a primary instead of a pdr 35? just wastegate it before the primary.

My next set will use a 35/14 w/a 40 compressor. I'm hoping for a bit more top end. . not like my current setup is lacking but more is always better. A 35 is faster but for all out performance the 40 will flow more. It will sacrifice a little speed though.



A single drain can be used but if you have 2 bosses on the block separate drains are better.



Later,

Mark

 

[TxDieselKid]

Originally posted by Mark_Kendrick

My next set will use a 35/14 w/a 40 compressor. I'm hoping for a bit more top end. . not like my current setup is lacking but more is always better. A 35 is faster but for all out performance the 40 will flow more. It will sacrifice a little speed though.

So why stop there, Nowel is going to run a b1 as the small turbo?

 

[HoleshotHolset]

Oh yeah... . well I'm running a HX-5million for my small turbo!

It spools at idle!



Are we comparing who can urinate the farthest again? :-laf



Matt

 

[TxDieselKid]

Originally posted by HoleshotHolset

Are we comparing who can urinate the farthest again? :-laf



Matt

I'm not, think about the other post you responed to me today.



Andrew

 

[HoleshotHolset]

:-laf

 

[Jim Fulmer]

This year is going to be a learning curve much bigger than last years, when time and money allow it I will do allot of R&D on temps, spoolup, drive pressure, air flow and air temp, then when I can get some of it down I'll play with the parameters at the track and dyno.



Jim

 

[jimk]

drive pressure

Originally posted by Jim Fulmer

This year is going to be a learning curve much bigger than last years, when time and money allow it I will do allot of R&D on temps, spoolup, drive pressure, air flow and air temp, then when I can get some of it down I'll play with the parameters at the track and dyno.



Jim

Jim would a good cylinder head port job, ma by even larger exhaust valves reduce drive pressure? Does reduced drive pressure increase toque or just reduce exhaust temps?

Would increasing the lobe centers help also in spool up, from for example 108 to 112 or 113. Just an idea. It must be fun in having a truck like yours. As you are making a lot of hp now. have fun Jimk

 

[Jim Fulmer]

Yes a cam and head will help both and they will come later, the drive pressure is fine now but I want to refine it a little, I'm working on several things, some as we speak I just have lots of irons in the fire now.



Jim

 

[JB @ C and L Machine]

Jim. . are you running a stock gasket or are you o-ringed?

 

[Jim Fulmer]

Stock head gasket and allot of Praying, I'll pull the head soon and O ring it then go with a . 020 fiber gasket as my boost won't be past 70.



Jim