B B C 5 4 0 T W I N T U R B O Q U E S T I O N S

[hannes_slanec]

Thanks Mr Nelson

for your help although I cannot afford to buy an engine from you.

I think now I know almost all only some minor questions if you have some minutes more:

I plan to go with the Electromotive EFI (I read that you also work with them), will the Electromotive handle 2 injectors or how works that?

I can change the firing order and I will do that if you say me that is a good thing, is that the firing order of the current 496 BBC Gen VII and what is the advantage?

As for the turbo, my problem is that, as far as I am informed, the Turbocharger got different parameters that I need to know if I want to order some.

For my knowledge I need to know:

Comp A/R

Turbine A/R

Housing size (that I think are the 88mm)

Trim

and so on.

Could you give me the parameters I need to order, that would be very nice.
Also if you could remeber a shop where I could by used but remamufactured turbos would be highly appreciated.

Just to be sure that I understood you right, you talk about two 88mm turbos with split housing, not a sinlge setup, right?

Thanks Sir

Hannes Slanec

[TOM NELSON]

I'll check into what would be affordable in a rebuilt thats common in the bigger frames.I'm only talking about running one turbo on your combo a single 88 split .The tec3r has the staged injection built into the software.The gt unit won't be able to run the 16 injectors.The reason for the cam swap is this.Remember driver side of the engine is 1,3,5,7 pass 2,4,6,8 are you with me so far.The engine fires every 90 degrees so #1 cyl fires then number #8 etc.So by changing the fire order to 18726543 what you effectively are doing is getting a fire every 180 degrees even on both sides of the engine.Then you pair the cyls firing after each other and pair them togethor.You run those pipes passenger bank into one side of the split housing of the turbo and driver side into the other side.This will make the turbo come up nicely.I'll ee wat i can find out on the turbo

[hannes_slanec]

Thanks Sir,

very lessons indeed!

I dont want to disrespect you but I would prefer a twin-setup since for my opinon it is more easy to install.

In the book maximum boost is written that the turbo charger should be as close as possible at the ports, further the long pipes would radiate a lot of heat in the engine bay.

By the way, the Tec3 is f........g expensiv, if you have an old system that is laying around in your shop or another one that is right for my project I would buy it.

Thanks so far for your nice help

Hannes Slanec

[badmatt]

Originally Posted by hannes_slanec

Thanks Sir,

very lessons indeed!

I dont want to disrespect you but I would prefer a twin-setup since for my opinon it is more easy to install.

In the book maximum boost is written that the turbo charger should be as close as possible at the ports, further the long pipes would radiate a lot of heat in the engine bay.

By the way, the Tec3 is f........g expensiv, if you have an old system that is laying around in your shop or another one that is right for my project I would buy it.

Thanks so far for your nice help

Hannes Slanec

The tec 3 is very resonably priced when you copmpare it to buying say a BS3 Unit and AMS boost controler, and a programable MSD setup the Tec 3 is by far cheaper and out preforms. and does all the funtions that it would take from MSD, the BS3 and an AMS 1000 boost controler.

[hannes_slanec]

What is the cheapest price I can get the Tec3 for and where?

[TOM NELSON]

If you're going to build a twin thats what i would prefer i would use our 72's we have a killer set-up with just the right ex wheel.They will set you back 1600 each.They will be good for over 1800 on a bbc.I can sell you a tec 3r for 2800.00 which is killer because as of last week they went up 300 dollars with everything you need to run.I don't have any used.

[hannes_slanec]

Is the same price for what I will get it anywere else how it looks but I think I will buy it from you since I want to give you something back for time and efford

The Turbos would explode my budget 3200 for a pair, you told me that you have a Source for remanufactured ones what I would prefer. I need to have an eye on the price since the the turbos and the EFI would be 6000$ alone

Thanks Hannes

[camcojb]

Originally Posted by hannes_slanec

Is the same price for what I will get it anywere else how it looks but I think I will buy it from you since I want to give you something back for time and efford

The Turbos would explode my budget 3200 for a pair, you told me that you have a Source for remanufactured ones what I would prefer. I need to have an eye on the price since the the turbos and the EFI would be 6000$ alone

Thanks Hannes

just realize that doing a twin turbo is the most expensive of all the forced induction builds. I think it's the best way to go if it fits the budget, but it's never cheap, and requires a lot more fabrication.

Jody

[hannes_slanec]

I know about that fact but Mr Nelson told me that there are several sources to get remanufactured turbos, so why to pay 1600 for one if I can get a pair for that price?

As for the Tec3 I got a friend who would sell me the computer but he got only coil packs for a 4 banger, I think about to buy that but I dont know if I get all the rest of the pieces for the system like the harness and so on.


Thanks

[deuce_454]

this thread is developing like most desk top racing projects.. it starts out with a goal of making a 1000 hp engine that gets decent mileage... and this problem is solved.. you get good advice on how to.. what cam to get etc.. a turbo this size propably costs under 1000 bucks if you get the right one... and then you start worrying about how it will look, and twins etc...

there are cars out there running sum 5 second 1/8 mile with a single turbo and flipped shortie headers... you could most likely mount a pair of truck logs backwards and run tubes to a single (with the split housing you wont get much benefit from running twins anyway) and meet your powergoal...

why have you suddently decided you need twins? the story about distance dont fly, if you want a turbo to spool well you want longer softly flowing tubes.. look at tom nelson´s you would add perhaps 10 inches of pipe to run a big single... i doubt you can feel the difference.. and i dont understand why you would spend twice as much money on somthing that only makes a difference with the hood open

but if you must then look into some masterpower T70´s they are cheap and good quality.. think they cost somthing like 550 dollars new.. just remenber you also need two wastegates, twice as much tubing, custom headers etc---