twin setup?

[TrentNell]

wow this one went down hill . :spit: i honestly think most every one here had some good thought , my opinion is gates are good and can be put on either turbo vvt ( custome ) big little inbetween ect , but why if drive pressure is good , the turbo's are running the same P/R you just wasted alot of time and money . in my setup only the top turbo is gated and as of right now there has been no need to gate the big turbo . and anyone who has ever tuned a waste gate knows that its takes a bit to get it right with one let alone many un nec ones .

 

[racinmike77]

no you dont.

I pmd it to him if you ask im sure he will tell you I said 135psi.

 

[Turbo Buick 6]

well then I guess you havent seen my early MPI setup.

ben

I would love to see a pic of that. Where does the gate tie into?

who else has your twins besides you and dmaxfireman?

As of right now I have done 23 sets of twins on diesels. A few people on the net that wish to remain unamed and most are local to me. I actually have a CuminGs coming here tomorrow for a set that I was thinking about doing a write-up on. No its not a D-Max but the theory for building them is the same.

I pmd it to him if you ask im sure he will tell you I said 135psi.

Yes I was PMed 135psi. The answer is 135psia or 120 psi. He forgot to subtract 15 at the end but seems to have most of the math correct. But none the less I give credit where credit is do.

 

[Turbo Buick 6]

wow this one went down hill . :spit: i honestly think most every one here had some good thought , my opinion is gates are good and can be put on either turbo vvt ( custome ) big little inbetween ect , but why if drive pressure is good , the turbo's are running the same P/R you just wasted alot of time and money . in my setup only the top turbo is gated and as of right now there has been no need to gate the big turbo . and anyone who has ever tuned a waste gate knows that its takes a bit to get it right with one let alone many un nec ones .

X2

Sure there are all kinds of wild things you can do when you start to push things. But my point is this thread was started by someone who said they wanted something mild. This can be done with no gates with the correct bottom turbo or can be done by gating the bottom turbo. There is no need to make soemthing that should be simple and mild complicated. Thats what scares alot of people away from twins. I want to see the most D-Maxes out the with twins as posable, don't care who built them. But to do this people need to understand that they are actually pretty simple.

 

[SIKDMAX]

I actually have a CuminGs coming here tomorrow for a set that I was thinking about doing a write-up on. No its not a D-Max but the theory for building them is the same.

Would love to see it Paul.

 

[duratothemax]

I would love to see a pic of that. Where does the gate tie into?.

EGR manifold on the passenger side up-pipe.

All you newer guys have had the luxury of EFILive ever since you owned a dmax and forget/dont know that there was a time when we had no such control over things. Thus the need for a gate around the vvt. My set of twins is from early April 2005; ive had efilive since early december 2005, but we did not get vane position tables until early 2006 when it was released to the public.

As of right now I have done 23 sets of twins on diesels.

cool, I did not know that.

ben

 

[Turbo Buick 6]

EGR manifold on the passenger side up-pipe.

All you newer guys have had the luxury of EFILive ever since you owned a dmax and forget/dont know that there was a time when we had no such control over things. Thus the need for a gate around the vvt. My set of twins is from early April 2005; ive had efilive since early december 2005, but we did not get vane position tables until early 2006 when it was released to the public.




cool, I did not know that.

ben

That is a great point, but we are now able to control the vanes.:hug: I can't imagine tuneing twins without EFI now a days. Not saying it can't be done but why do things the hard way.

 

[emiller3]

MPI twins:happy2:

 

[motohed]

thanks for some input guys! i don't understand all of the tech stuff, but thats why you learn something new everyday.

i don't know now, i thought i could have time to get a turbo and fab some stuff up for cheap while my motor is out and easily accessible, but work and scheduling confiicts are arising... gotta see. i still have to learn more about the whole set up. grrrrr. i need more hours in a day

 

[Turbo Buick 6]

thanks for some input guys! i don't understand all of the tech stuff, but thats why you learn something new everyday.

i don't know now, i thought i could have time to get a turbo and fab some stuff up for cheap while my motor is out and easily accessible, but work and scheduling confiicts are arising... gotta see. i still have to learn more about the whole set up. grrrrr. i need more hours in a day

the motor needs to be in to do it anyways, don't get overwhelmed. its not that hard. if you can weld and fab you can put twins together for less than a grand. watch for a step by step write up on a d max, I will most likely be writing one this summer
Posted via Mobile Device

 

[motohed]

the motor needs to be in to do it anyways, don't get overwhelmed. its not that hard. if you can weld and fab you can put twins together for less than a grand. watch for a step by step write up on a d max, I will most likely be writing one this summer
Posted via Mobile Device

how bout a diy guide in a week or less:hug:

 

[Turbo Buick 6]

how bout a diy guide in a week or less:hug:

ugh, your asking for a lot, i have a CumminGs to twin and have to teach my mom how to shoot her new AR15

 

[dmaxvaz]

ugh, your asking for a lot, i have a cummings to twin and have to teach my mom how to shoot her new ar15:d

whats with the cummings? It is cummins,:d no "g"

 

[Turbo Buick 6]

ugh, your asking for a lot, i have a CumminGs to twin and have to teach my mom how to shoot her new AR15

whats with the cummings? It is cummins,:d no "g"

are you sure? I'm pretty sure I know that. It's one of the ways I pick on them. Look at the post befor yours and you will see the g is in caps.

 

[kenny]

the motor needs to be in to do it anyways, don't get overwhelmed. its not that hard. if you can weld and fab you can put twins together for less than a grand. watch for a step by step write up on a d max, I will most likely be writing one this summer
Posted via Mobile Device

Sounds like a great idea. I would be interested in viewing a writeup for a twin turbo set up on a duramax. Thanks

 

[dmaxfireman]

paul knows his shit when it comes to metallurgy and building air induction systems for engines. i have first hand knowledge of this and had the pleasure of watching him work and fabricate my twins. which are friggin awesome and even with a stock tune will give you a wake up call if you goose the throttle when that top turbo lights!!

 

[juddski88]

i was just recently thinking about using a S370 for a small charger when i get back next year and build my motor. what would i twin this with? from the looks of the maps i would think S49x-ish. it's hard to find maps for every A/R and wheel option so i know it's a ballpark but my planned build for the '01 will be able to move a lot of air. like perhaps my block bored .040 over and a big cam, revving to 5000 rpms - amount of air. if Maxed Out can hit 10's with a S366 small charger with S480 big charger, I'm thinking that i might be able to sink my ECSB into low 10's maybe 9's with little bit more air than that :cool2:

on edit: would a 470 be better for the primary for more flow/stronger internals?

 

[ChevyDieselLLY]

keep the the S300 fo rthe small if you want to tow with it. also id talk to Nathan at MPI for what he would use with a S370 as the small. id like to do the same thing you are thinking of.

can you say a 7.1L with a HTT 71mm for the small and something BIG for the other

 

[juddski88]

keep the the S300 fo rthe small if you want to tow with it. also id talk to Nathan at MPI for what he would use with a S370 as the small. id like to do the same thing you are thinking of.

can you say a 7.1L with a HTT 71mm for the small and something BIG for the other

the S64x that i put on IronHyde spools well on the street and towing with Moonshine tuning and some mods but not a ton done to the Airflow/exhaust department. if I was to put a more displacement/large cam/injectors/2CP3's/headers and uppipes/ and the secondary turbo to it, it would probably spool too fast, lol. so that's my thinking behind using the 470 vs. the 370....not to mention it is more stout internally.

I may do the 7.1 with a small overbore but i just don't think it is needed to get to my desired power....if i have the extra 3k when i get back and i feel like going with a stroker kit, i most likely will.

 

[ChevyDieselLLY]

oh i know what you mean. but i look at it as this is the one time iw ant to build the engine and why not go a lil over board on it.

larry that built the 7.1 with the GT42 Mag says it spools way fast and might twin off that. like a GT55 or something big.