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Another turbocharging/megasquirt thread!

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Offline wildgoody

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Re: Another turbocharging/megasquirt thread!
« Reply #15 on: January 19, 2005, 02:01:58 PM »
Quote


Care to put that in English?  Something like:

Bob, when you get to the point that you're actually going to put a turbo on, you'll have to replace your stock injectors with <insert brand and model here>, and all you have to do for that, is <show me and tell me, here>




Bahh, that would make it too
easy  ;)  I thought you would
enjoy a 12 page booklet on
injector selection for the turbo
Track/Kick 1.6

OK, OK, I'll cut the BS and spill
the beans, PPH = pounds per hour
also can be measured in CC/Min
but I don't know the conversion
formula off hand.

What you want to do is get some
injectors from a 2.3L Ford Thunderbird
those are 25 PPH, the Turbo Bird has
35 PPH, either of these should be fine
as far as size goes, and will also give
a good idle with the MS EFI System

I don't know what Ohm the stock
Suzuki injectors are, tho I think Rhino
said they are low Ohm, or called low Z

I do know that the 17PPH injectors from
a Ford Escort are high Z or High Ohm, this
probably dosen't mean anything to you .....
Yet, but it has a factor in the setup of the
MS EFI system, Low Z require a peak and
hold, which limits the current so as to not
overload the FET's which are high speed and
high load Transistors, for all purposes, too
much current over heats these and can burn
them out, then the EFI stops working

To install the new injectors, simply remove
and replace with the new ones, use caution
and measure the Ohm of the old injectors
first Low Z is between 2-4 Ohm High is 9-16
Ohm, and if the old ones are low, no problem,
if not you could burn out the stock ECU from
over current
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Offline wildgoody

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Re: Another turbocharging/megasquirt thread!
« Reply #16 on: January 19, 2005, 02:14:58 PM »
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So an 8v would do fine under a moderate amount of boost, but a 16v would be better, then? Is it worth switching to the 16v if I'm going after about 120hp, especially if overall cost is a concern? Will stock internals in either engine do the job for that power?
 
you will get 120 with an 8V easy, 16V is
easier to put different injectors on because it has
the bungs in it already

Quote

On the manifold, is it plausable to run the turbo on top... basically flipped over compared to yours to keep water and crap away from it? The guy with the turbo 4dr has a manifold like that. Where did you get the elbows to make your header, wild? Did you bend those yourself/have them bent for your project, or can you buy them? What kind of material is it?


I would do the manifold with the turbo on top,
this is going to be the next time I do a manifold.

The elbows are Schedule 40 black iron weld ellbows
from an industrial plumbing supply shop, about $6 ea


Quote

Also, what's the best turbo to use in this application?


Subaru 1.8L Turbo, or a Mazda 1.6 Turbo

Quote

Intercoolers cool the air that goes from the turbo to the intake, correct? They're a good idea to have, correct? I remember you posted that your intercooler caught the debris when your bearing went out... seems like it'd be good to have just for that reason.


Yes, air from a turbo can reach temps of over 280*

Yes, not only is an intercooler good to have, it is not
a good idea to run without it, the ping is uncontrolable
without one installed.

Yes, my intercooler caught pieces of the compressor
wheel, as well as a quart of motor oil that leaked out
of the turbo after it blew the bearings and seals
« Last Edit: January 19, 2005, 02:17:13 PM by wildgoody »
Real Trucks Are Built, Not Bought,
And Chrome Don't Get Ya Home.  

An armed man is a citizen. An unarmed man is a subject.

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Offline wildgoody

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Re: Another turbocharging/megasquirt thread!
« Reply #17 on: January 19, 2005, 02:22:48 PM »
Quote
hey wild , im a little confused i think it mite be too much information too fast, ill probably figure it out later and feel stupid but ill ask annyway.

can you use mega-squirt on a tbi and run new (4) injectors and use your trottel body to regulate air only, kinda
turning tbi into muilti port injection without turbo? or will the mega-squirt not do that , would it work w/out turbo, are power increases worth the trouble w/out turbo.


Sure, That's what I'm doing right now, as far as
power gains, you are not going to gain much by
changing the EFI system, you might get better
mileage, but unless you modify the ignition timing
as well, there is not much to be gained without
a turbo, but yes, MegaSquirt will work with or without
a turbocharger, you program it, it does whatever
you program it to do.
Real Trucks Are Built, Not Bought,
And Chrome Don't Get Ya Home.  

An armed man is a citizen. An unarmed man is a subject.

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skyhighsami

Re: Another turbocharging/megasquirt thread!
« Reply #18 on: January 19, 2005, 02:25:06 PM »
I am going to be tearing into my engine here in about a month or so. I plan on replacing everything and building 4.3 like power with the killer weight of the Sami motor. I want about 170hp and maybe 200tq. I know that the Buick Grand Nationals were a tq monster. All at a low rpm, that is my goal and I only want to spend about 4000 with the whole set-up depending on what internals I run. I am excited about this SUPER SAMI POWER. One question would the Reynolds engine be a good idea or no, please keep in mind I plan on having a turbo or supercharger.
SAMIS RULE

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Offline wildgoody

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Re: Another turbocharging/megasquirt thread!
« Reply #19 on: January 19, 2005, 02:39:26 PM »
The problem with a Sammi motor is the short
stroke, like 15mm shorter, makes a big difference
in torque, and CCs, a turbo will help, but the torque
is going to be harder to get.

I would get low compression forged pistons, or
a set of destroked rods to lower the compression,
put on a 1.6 head and stock cam, you could use
a Hawks or Calmini cam, but Stock cams work very
well in pressure fed engines, and yet idle smooth
and perform well at off idle throttle.

You need more fuel, I throughly recommend the
MegaSquirt, for it's price and simplicity, bang for
the buck, there is nothing that can touch it.
Real Trucks Are Built, Not Bought,
And Chrome Don't Get Ya Home.  

An armed man is a citizen. An unarmed man is a subject.

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Offline explosivo

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Re: Another turbocharging/megasquirt thread!
« Reply #20 on: January 19, 2005, 10:21:39 PM »
All the talk about the low and high ohm injectors... does that only matter when you're running the stock computer, or do you want low Z injectors with the MS and turbo?

Also, can a regular MIG weld the iron elbows, or do you need anything special for that?
omghi2.us[/url]
"Its a ZUKI thing. Doing more with less than less with more." -- HotRod

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Offline Rhinoman

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Re: Another turbocharging/megasquirt thread!
« Reply #21 on: January 19, 2005, 11:02:23 PM »
Quote


Sure, That's what I'm doing right now, as far as
power gains, you are not going to gain much by
changing the EFI system, you might get better
mileage, but unless you modify the ignition timing
as well, there is not much to be gained without
a turbo, but yes, MegaSquirt will work with or without
a turbocharger, you program it, it does whatever
you program it to do.



I'm working on ignition timing at the moment. I have some scope to swing it forward in places as our stock fuel over here is 95/96 octane (RON). I think stock timing is set for 91 (haven't got the FSM to hand), of course blown it will probably have to be retarded.
Wild, did you replace the MAP Sensor with a 2bar sensor?
Bobzooki, there is a LOT of reading to do if you want to understand it all, took me months to get my head around a lot of it and I'm an Electronics designer, I tstill don't get all of it, I need a lesson in the Ideal Gas Law now, moles? wtf? any physics graduates out there?
Really I don't think you need to understand it all, as long as you can follow a wiring diagram and then the setup instructions.
« Last Edit: January 19, 2005, 11:04:57 PM by Rhinoman »
2000 Vitara 1.6, 3+3 Lift, 33"MTs, 5:83s, LWB brakes, Winch, Snorkel, Safari Rack
1986 SJ413K PickUp, 1.6L conversion.

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Offline Bobzooki

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Re: Another turbocharging/megasquirt thread!
« Reply #22 on: January 20, 2005, 12:26:03 AM »
Quote
What you want to do is get some injectors from a 2.3L Ford Thunderbird those are 25 PPH, the Turbo Bird has 35 PPH, either of these should be fine as far as size goes, and will also give
a good idle with the MS EFI System

I don't know what Ohm the stock Suzuki injectors are, tho I think Rhino said they are low Ohm, or called low Z

I do know that the 17PPH injectors from a Ford Escort are high Z or High Ohm, this probably dosen't mean anything to you .....


Actually, it makes huge sense (as a former electronics engineer).  "Z" is the symbol for Impedance - which is like an AC version of resistance.  For low impedance injectors, you have to hit them with a heavy spike of current, to get them to open, then less current to KEEP them open, hence the "peak and hold".

Thanks Darin, I am one step closer to getting my arms around all this!!!
Bob

Tahoe 24' Fish-N-Fun Tritoon
115 HP Mercury outboard

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Offline HUMZUKI

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Re: Another turbocharging/megasquirt thread!
« Reply #23 on: January 20, 2005, 01:12:38 AM »
Quote
All the talk about the low and high ohm injectors... does that only matter when you're running the stock computer, or do you want low Z injectors with the MS and turbo?

Also, can a regular MIG weld the iron elbows, or do you need anything special for that?




Didn't you check out any of the links I posted? They should answer like 90% of your questions.

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Offline HUMZUKI

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Re: Another turbocharging/megasquirt thread!
« Reply #24 on: January 20, 2005, 03:56:47 AM »
"If you go with an 8V intake TBI, you will need 4 extra injectors to feed the engine under boost, about 25-30
PPH will work fine, I found 17 PPH with the stock TBI
just enough, but not enough to run rich under boost."

Wildgoody,

How and where did you put the injectors. I have no problem with fabin stuff but from a pic I found of the single stock injector in the TB I don't see any room for 4.

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Offline JasonPugh

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Re: Another turbocharging/megasquirt thread!
« Reply #25 on: January 20, 2005, 04:49:54 AM »
I'm looking at the same thing, I have an 1.6 TBI setup an my 1.3, and was considering putting 2 additional injectors upstream of the stock injector to help with the boost.  I'm interested in other options.
Thanks guys for all the great info.  Hopfuly next winter the turbo sammy will be born.

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Offline HUMZUKI

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Re: Another turbocharging/megasquirt thread!
« Reply #26 on: January 20, 2005, 04:56:23 AM »
Thats what Im thinkin. As close as possible the existing one. Maybe right on top of the TB intake?

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Offline zukizzy

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Re: Another turbocharging/megasquirt thread!
« Reply #27 on: January 20, 2005, 05:25:18 AM »
Nah you gotta build a fuel rail and weld or tap bungs into the intake for the new injectors. It seams intimidating but now that I have seen wilds I don't think it would be that bad.

would you all be interseted in some parts precut for the header? Like the header plate or the collector plate. I think Wild and I can spend an afternoon and make some. I don't wanna make headers cause at this point every rig is different and that is something you gotta design but we can cut the plates for ya. I think that is where alot of the time is eaten up.

Thanks
Wayne
Clearly a road

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Offline HUMZUKI

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Re: Another turbocharging/megasquirt thread!
« Reply #28 on: January 20, 2005, 05:49:16 AM »
Thanks for the offer on the flanges but I already have the metal and they sell laser cut stuff here pretty dam cheap.

http://www.turbinetech.ca/FrameEN.htm

I don't think it would be worth the work. I was just gona fab up some thing real quick to get this all together and running then I'll probably buy a nice prefab with equall length headers. Thanks though.


As for the injection. Wouldnt that make it a multiport? I should have just rigged a MPI maifold to fit then? Can you get a pic or some thing? That would REALLY help. I have no problem tapping bungs in,or weld'em, (Iv been meaning to hook my old mig up for aluminum any way)

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Offline zukizzy

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Re: Another turbocharging/megasquirt thread!
« Reply #29 on: January 20, 2005, 05:57:47 AM »
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Thanks for the offer on the flanges but I already have the metal and they sell laser cut stuff here pretty dam cheap.

http://www.turbinetech.ca/FrameEN.htm

I don't think it would be worth the work. I was just gona fab up some thing real quick to get this all together and running then I'll probably buy a nice prefab with equall length headers. Thanks though.


As for the injection. Wouldnt that make it a multiport? I should have just rigged a MPI maifold to fit then? Can you get a pic or some thing? That would REALLY help. I have no problem tapping bungs in,or weld'em, (Iv been meaning to hook my old mig up for aluminum any way)


Ive got a carbed sammy so I can't get pics. that would be up to Darrin ;D

I think ( correct me if i'm wrong Wild) he is using the stock TBI for running the engine and the MS for an enrichment only. his turbo spools quite low so it is probly working all the time.

I don't wanna speak too much on what he is doing cause  I could be wrong and my turbo Exp is with VWs and carbs.

Wayne
Clearly a road