On Tue, 23 Nov 1999, Robert France wrote:
> >it up yourself, or take it to a shop? I'd like to do a twin turbo
> >setup on my Dak, but I haven't been able to figure out how to make it
> >a simple bolt-on yet.
>
> heh heh heh (giggle giggle giggle) oh yeah, simple bolt on?!? :P
Sure, why not? I don't see why it has to be much more difficult than
a centrifugal blower install. True, you need the custom headers and
plumbing for an oil line and an intercooler, and there are a couple of
extra things like a blowoff valve, but that's just "busy work"... Or
am I missing something? (Please tell me if I am, I hate surprises
in the middle of a project.) :-)
> >intercoolers, etc! I'd really like to do twin turbos to reduce the
> >lag, but that takes up twice the room. I probably aught to just do it
> >right and have some headers made.
>
> and costs twice as much for turbos too!
Hmmm, good point. I assume a single blower could be sufficiently
powered by the 4 exhaust ports on the side of a V8? Maybe what I should
do is to design it for one blower at first, work out all the problems,
and if it becomes nescessary/desireable to have 2, I can basically just
mirror the work on the other side... I'm pretty sure the Magnum heads
are symetrical, so if I design it right, I *should* be able to use the
same turbo header on both sides of the engine. (Unless there's a
clearance issue, of course.)
> >make me a set of custom headers. :-( I do plan to get a MIG welder
> >one of these days, but I'd still need a tubing bender. (Well, maybe
> >I can get a shop to bend up the pipes.) My problem also is that
> >I don't know a whole lot about the theory of designing headers, so
> >they won't be much more than tubes to get the exhaust to run through
> >the turbos... Maybe it doesn't matter quite so much on forced induction
> >engines though. ?
>
> DON'T BUY A CHEAP MIG WELDER!!! I did, I bought an Italian-Made 120V
> "130Amp" plug-it-into-the-wall style MIG (Cebora?) and it is a piece of
> junk. It has no real voltage regulation system to control arc strength. My
> brother bought a Lincoln (or if you are a union man, get a Miller) 170Amp
> 220V unit, and it all of a sudden solved all of my "welding
> inadequacies"...ie for once it wasn't me, it was the equipment!!! You can't
> understand the difference until ...you get under your brother's girlfriends
> car to fix her rusty tailpipe, and the crappy welder just won't work, but
> the good welder is hard not to do a good job.
Thanks for the warning. Yeah, I'm definitely not going to get one of
those 110-115v models; it'll have a voltage regulator for sure, and I've
got a 220-230v outlet on a seperate circuit right on the side of my lift.
> > Anyway, keep us updated on your progress! :-) Based on some earlier
> >DML discussions, and particularly from the input of Shaun H., I'm leaning
> >toward the Garret VNT units.
>
> Stay away from that piece of crap! VNT technology went the way of the Dodo!
> If you learn to drive a turbo motor, you don't need to rely on unreliable
> and expensive tricks to do the work for you; keep the revs up medium high
> to keep the turbine flow in the low-mid range of your turbo flow map and
> match the header primary lengths on a relatively long primary header, and
> there won't really be turbo lag, just traction lag!!!
>
Hmmm, looks like I've got to re-evaluate things. That's OK, I haven't
really even started to research it yet. As far as driving a turbo motor
goes, I used to have a 3000GT VR-4, but then again, that had twin turbos,
so I guess I can't really compare it. One aspect that might throw a monkey
wrench into the works is that it'll be in front of an auto tranny rather
than a stick. I do plan to go with a manual valve body though, so I should
have a fair amount of control over the RPMs, I just won't be able to rev 'em
up quick using the clutch anymore. Plus, I don't want to have to play with
the truck too much to get the performance out of it; I just want to mash
the pedal and pull some G's. :-)
Thanks very much for your input and the info!
-Jon-
.--- stei0302@cs.fredonia.edu ----------------------------------------.
| Jon Steiger * AOPA, DoD, EAA, MP Race Team, NMA, SPA, USUA * RP-SEL |
| '96 Dodge Dakota V8, '96 Suzuki Intruder 1400, '96 Kolb FireFly 447 |
`--------------------------- http://www.cs.fredonia.edu/~stei0302/ ---'
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:19:35 EDT