couple of questions about the DASC

[318iS]

another topic about the dasc hehe....

hi all... just joined and want to ask a few questions about the supercharger...


basically if i put the supercharger on a standard m44 do i have to put in stuff like forged pistons...high performance con rod, head bolts, etc.

basically do i have to change engine internals if running the standard 7.5psi???...


if not how high up in the psi range can i go with stock internals???....


how much psi can the stock fuel pump take???....


thanks in advance

[ATF]

Not speaking from experience, but speaking from research, http://www.318ti.org/forum/showthrea...highlight=dasc

according to that it can run on the stock setup.

[1996 328ti]

Originally Posted by 318iS

hi all... just joined and want to ask a few questions about the supercharger...

Read this before asking further questions.
http://www.318ti.org/forum/showthread.php?t=11797

[pnosker]

No, the DASC is a simple "bolt on" modification from a necessity standpoint. It might be good to upgrade some other driveline components eventually though since there will be a significant power boost.

[318iS]

so the internals can take it then....

i read the faq but it didnt mention anything about internals....


thanks

[318iS]

just wondering could anyone tell me how big is the box that the supercharger comes in and how much does it weigh ? ? ?

do yous think that US security would let a passenger bring one into a plane as hand luggage? ? ?

[pnosker]

Almost definitely not, it's a heavy and blunt object which could inflict damage. Internationally, no. One time I brought a blender, mixing propeller for a drill, and spray bottles in my carry-on luggage for a domestic flight and it took me 1 hour to get through security. I'm surprised they actually even let me on with the prop (it was big and blunt). Why don't you just check the Supercharger in a box?

[318iS]

its not me going my sister is going to atlanta to visit family in june so i'm taking the oppertuniuty to get free shipping....

i might have her check it in... thats why asked about the weight as well....

i'm just worried the idiots at the airport might not know what it is and start dismantling it... the last thing i want i to have missing pieces when i live all th way across the atlantic......

[318iS]

another question....


whats the most psi the dasc is capable of running....

heard of 10psi pulley but whats the most that can be gotten....


p.s. im not interested in any safety and engine internal fears you may have i just want to know whats the most psi the dasc can put out....

[pdxmotorhead]

Look up Magnesun and Eaton on the web, its an M62 more or less and the tables are out there with cfm and boost numbers.

Dave

[318iS]

found the info i was looking for....


taught i'd put it down in case anyone else was interested in the future....


anyway its possible to run it to about 20 psi and from what i've read its being done on loads of chevys.... but anything over 15psi causes a lot of hot air and more work is needed to make it work....


it works fine for me cos i'm planning to run 1 bar so about 14.5psi in the long run....

[DustenT]

Originally Posted by 318iS

it works fine for me cos i'm planning to run 1 bar so about 14.5psi in the long run....

Good luck, I doubt the internals will handle it. luckily motors are cheap.

[318iS]

Originally Posted by DustenT

Good luck, I doubt the internals will handle it. luckily motors are cheap.

haha dude i dont plan to run it on stock internals....

thats why i said in the long run cos i plan to run low boost and then when i can afford new internals boost it to 14.5....


im not stupid here

[mohaughn]

I think the weak link is going to be the crank. Anybody that has tried to run more than 15-20psi on an M42 usually replaces the crank with the one from the m47 diesel motor.

A properly built and tuned supercharger or turbo charger could probably safely run 15-20PSI if you lower the compression on the engine first. That is with stock internals.

You couldn't run 15PSI on a DASC without some kind of cooling system as you would experience heatsoak pretty quickly and lose all gains or experience pretty bad detonation.

The m42club.com has a lot more people that have done or have projects underway on highpowered NA rebuilds, or high PSI M42 engines. Their take seems to be that you can lower the compression with a thicker headgasket, use the M47 crank, run ARP headstuds, have a good cooling system, and the right tune and you can run an otherwise stock motor over 20psi.

[318iS]

well i was hoping not to get into this too much before i get the dasc (incase people start thinking im a dreamer).....

anyway what i was thinking was to run the stock boost 7.5...

then do some internal work.... i planned on doing forged pistons, stell h/g, con rods and new head bolts..... is the diesel crank a must? i was hoping to get away without doing it....but if i have to i will.....

i planned to do a front mount intercooler so i taught this would be enough for the 1 bar im after ? would it be ?