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Registered:
October 2003
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18rg turbo
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Sun, 01 February 2004 11:22
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just wondering if anyone knowsif you are able to turbo a 18rg by using the standard solex's with a push through sytem rather than getting another side draft webber and making a suck through sytem.
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Location:
Brisbane
Registered:
February 2003
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Registered:
October 2003
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Re: 18rg turbo
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Mon, 02 February 2004 06:43
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ok thanks mate, I had a look at those sites and they were very interesting, I got the efi stuff here but no ecu, afm or any money to buy some !!! so thamks again for your help. 
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Location:
Brisbane
Registered:
May 2002
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Re: 18rg turbo
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Mon, 02 February 2004 06:55
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If you've got the EFI gear you'd be nuts not to use it! Sure it'll cost you extra for the ECU, but setting up the carbies will probably end up costing just as much if not more. FWIW you're probably better off with a cheap fuel-only programmable ECU (eg Microtech) rather than bodging up the archaic 18R-GEU ECU to work with boost.
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Location:
Brisbane
Registered:
October 2002
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Re: 18rg turbo
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Mon, 02 February 2004 07:23
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on that note norbie, now would u make the dizzy retard when it boosts
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Registered:
October 2003
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Re: 18rg turbo
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Mon, 02 February 2004 08:01
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ok lets put it this way, what would be the best or should i say the cheapest way to turbo my 18rg. I relise that a suck through set up would probably be best, I can possibly make exhaust and intake manifold myself, so what carby and what turbo should I run. I did a bit of a search and I thought I saw that you could use xe xf carbys, is this true ??? What is a CD175 stromberg??? Can I use it as a carby, if so what do they come off. Ohh I also priced microtech (mt4 fuel only) and i thought it was a bit expensive for me, but thanks for your help guys.
What are your thoughts ???
Thanks,
Glenn
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Location:
Brisbane
Registered:
February 2003
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Re: 18rg turbo
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Mon, 02 February 2004 11:57
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if you're deadset keen on a carbi-powered suck-thru turbo then my car's an example (see link below) - yes it's only an 18R but you're looking at a similar job (even uses a stromberg CD 175 carbi):
custom exhaust manifold
higher-flowing fuel pump (not higher pressure)
modified intake (from turbo to existing flanges where the solex's bolted on)
bigger exhaust (2 1/2 would be a good start)
modified dizzi (total mech advance limited to 15 degree)
locate vacuum advance unit with ports on each side of diaphram so you can get boost-retard and then adapt to dizzi...
with my one experience, i'd advise EFI - you biggest ticket is going to be the exhaust side - from turbo to EFI throttle body can be exhaust tube and radiator hose for flexible joins. what you don't spend on carbi, intake manifold mods, modifying the dizzi, re-jetting the carbi, you can put towards an EFI computer that does spark & fuel and bigger injectors.
also, an ECU that uses MAP (and map sensors are only really US$18 worth of silicon & plastic) will eliminate need for an AFM.
if you want cheap EFI computers and your competent with a soldering iron and electrical stuff then look here:
<http://autos.groups.yahoo.com/group/megasquirt/>
<http://autos.groups.yahoo.com/group/megaspark/>
one for fuel, the other for spark (is what i'm about to do).
there's a guy on toymods (brisbane based) with a corona wagon with a 18RG EFI turbo...
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Location:
Brisbane
Registered:
May 2002
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Re: 18rg turbo
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Mon, 02 February 2004 13:41
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| philmelvin wrote on Mon, 02 February 2004 17:23 |
on that note norbie, now would u make the dizzy retard when it boosts
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I don't know of any easy ways to do it. My plan is to retard the base timing a little and not run much boost. Of course long term I'll be converting to electronically controlled ignition.
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: 18rg turbo
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Mon, 02 February 2004 17:22
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im just going to splash out on an aftermarket ECU when i get around to turboing (finally), something like a second hand wolf 3D version 3 is available for like $500 or less.
Until i go turbo, i will be using the megasquirt, just for fun!
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Location:
Adelaide
Registered:
January 2004
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Re: 18rg turbo
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Tue, 03 February 2004 02:13
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You can run the 18R-GE's on a 3S-GE/TE. I think that this would be a good way to go (especially the 3S-GTE ECU) as you already have everything there to run the turbo.
I've been thinking about making an 18R-GE turbo someday, just for the whole bolt in factor, but in all honesty guys, the better option (and probably for similar cost), is to go for a 1G-GTE conversion if you want a turbo engine in an early celica or similar.
Don't get me wrong, the 18R-G's are great, but there still haven't been made for what, 20 years at best?? And as we all know the Japanese are a throw away society, so unless you wanna pay a fourntune for parts just cause you break something, think about getting a newer engine.
The power, drivability and fuel economy will be so much better as well...
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Location:
Brisbane
Registered:
February 2003
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Re: 18rg turbo
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Tue, 03 February 2004 11:09
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| THE WITZL wrote on Tue, 03 February 2004 03:22 |
<snip>
Until i go turbo, i will be using the megasquirt, just for fun!
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the Megsquirt will correctly map fuel for boost up to 20psi (limited by the sensor really) - so what kind of boost are you planning to shove into the unsuspecting 18RG 
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Registered:
June 2002
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Location:
Adelaide
Registered:
January 2004
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Re: 18rg turbo
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Thu, 05 February 2004 02:04
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Toysport reckon that you can use the factory computers from the early GTS corrollas and MR2's (4A-G not 3S anyway) can be used on the EGU engines (2T or 18R) and will run the engines fine, as long as you keep the rev range the same (wheres the fun in that?)
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Registered:
June 2002
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Re: 18rg turbo
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Thu, 05 February 2004 02:10
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Yes all the computer you talk about are analog style with a AFM, these lend them selves to adapting becuase they do not use a digital map.
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Location:
Canberra
Registered:
June 2003
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Re: 18rg turbo
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Thu, 05 February 2004 02:48
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It's dead easy to retard dizzy timing under boost. Just the same as tyou have vac advance you have the advance plate modded to do boost retard. Any of the shops that regraph dizzies can do this for you.
I ran a haltch fuel only with this setup on my elctronic dissy. Worked sweet, RA23 ran a 12.8 1/4 so sure didn't effect power.
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Location:
Brisbane
Registered:
October 2002
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Re: 18rg turbo
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Thu, 05 February 2004 08:11
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| JustenGT4 wrote on Thu, 05 February 2004 12:48 |
I ran a haltch fuel only with this setup on my elctronic dissy. Worked sweet, RA23 ran a 12.8 1/4 so sure didn't effect power.
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was it a 18RG "T"
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Location:
Canberra
Registered:
June 2003
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Re: 18rg turbo
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Thu, 05 February 2004 21:39
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why would i bother with boost retard if it wasn't a "T" 
I ran a RX7 turbo set up for pulsed twin entry. Had a V2 trim TO4B compressor wheel. Top end was awesome. More top end than anything else i've been in except Jamie's TT TA22.
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Location:
Brisbane
Registered:
October 2002
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Re: 18rg turbo
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Fri, 06 February 2004 09:15
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sorry, i meant the emphasis on the 18RG part
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