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Location:
Brisbane
Registered:
February 2003
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Location:
Rocklea qld
Registered:
February 2003
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Re: converting 18R turbo to EFI - progress
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Sat, 31 July 2004 13:18
 
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I just hope it works. My other thought if the plenium isnt big enough is we can remove the throttle body and extend the pipe to go across the head to allow maybe 600ml more volume if we find it isnt big enough. that will be heaps easier then removing the existing (plenium). As for the fuel lines we can either try to bend them or i can get them rewelded straight in the ends of the rail but i dont think that will be needed.
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Location:
Melbourne
Registered:
May 2002
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Re: converting 18R turbo to EFI - progress
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Sat, 31 July 2004 15:12
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will be VERY interesting to see how the non cross flow engine responds to boost!.. now all you need is to source a gear drive setup to replace those friggin' chains!!
Allan
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Location:
Rocklea qld
Registered:
February 2003
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Re: converting 18R turbo to EFI - progress
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Sat, 31 July 2004 23:55
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The car is already turbo'd and has been running with a carb setup for a while now. Ther noncrossflow head is not ideal but considering he has kept the original engine insted of doing a engine conversion the old 18r goes bloody well. Its just a matter of how it will go now as it should go better and lets hope the engine engine can still stand up to it.
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Location:
Brisbane
Registered:
July 2004
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Re: converting 18R turbo to EFI - progress
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Sun, 01 August 2004 01:00
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Thats a pretty interesting set up you used there. wot did the total efi conversion cost u if i may ask? i was looking at doing somthing simmilar with a sohc 18R that i ahve sitting in my shed, but i mannaged to get a factory 18RGEU with turbo for $500. good luck with all the tuneing etc. hope it all goes well
Cheers
Dan
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I supported Toymods
Location:
south of the big smoke
Registered:
May 2002
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Re: converting 18R turbo to EFI - progress
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Sun, 01 August 2004 02:17
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good on ya mate for thinking out side the circle, ill be following your process, hope all goes good
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: converting 18R turbo to EFI - progress
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Sun, 01 August 2004 04:01
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massif restepca! 
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Location:
Brisbane
Registered:
February 2003
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Re: converting 18R turbo to EFI - update: turbo fitted
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Fri, 13 August 2004 12:33
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hi folks,
New manifold has been fabricated (thanks to exotic exhausts) - trail fitting of my t25 makes it look pretty smick:
there's pics here of the intake side for EFI here:
<http://www.mkhala.com.au/thechuckster/18r_efi_part s/18r_efi_parts.html>
and more pics of the turbo/exhaust manifold:
http://www.mkhala.com.au/thechuckster/18R_t25_mani fold/18R_t25_manifold.html
Dan: total cost is "don't ask - not worth it"... seriously, if starting with a motor suitable for turbo/efi:
- intake manifold (swapped for MS-EFI ECU, wiring help, suspect T04 and labour)
- parts (TPS, TB, temp sensors, O2, FP) $150?
- turbo $350
- manifold & wastegate $650
- MS ECU from a group buy $180
- various electrical and plumbing bits $100
- still to come... intercooler plumbing
cheers,
Charles.
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Location:
brisvegas
Registered:
August 2004
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Re: converting 18R turbo to EFI - update: turbo fitted
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Fri, 13 August 2004 13:33
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what sorta cam are you running in it? that manifold looks F$%##@& awsome!, but it looks like it won't bring the boost on till a fair amount of revs are passed, then it will drop the arse down and boogie! did you try it with a shorter manifold, it could bring the boost on erlier with the larger T04..
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Location:
Brisbane
Registered:
February 2003
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Re: converting 18R turbo to EFI - update: turbo fitted
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Fri, 13 August 2004 13:57
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cam (from memory) is slightly higher lift for both int/exh and has longer intake duration. exh duration is stock to minimise overlap time. Is a 'mild street' cam modded to suit turbo.
i went to smaller turbo (t04 down to t25) to lower spool up time and the rev point where that happens. This new manifold isn't much longer than the previous log unit, but is only 1 1/4 steam pipe (prev was > 1 1/2) so i should have good gas pressure and speed.
This new manifold also has the four runners feeding into the base of turbo instead of into the log, should eliminate issue of exhaust pressure wave from one port, interfering with others (which the log design does suffer from).
this was original manifold:
prev t04 needed 3k to start making sustained boost (not spiking from vacuum up to 0-2 psi territory) - i want that to lower to about 2500rpm and get ful boost (13-15psi) lower than 4.5-5k rpm
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Location:
Ballarat, Vic.
Registered:
February 2004
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Re: converting 18R turbo to EFI - update: turbo fitted
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Fri, 13 August 2004 18:24
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hey, chuck, do you still have the old log?
ive got an 18r and a garret tb03 in the garage doing nothing....
might be fun on the ra40....
by the by, what fuel pump setup did you use in the carby setup?
like efi pump+regulator or holley blue ect?
thanks.
M.
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Location:
Brisbane
Registered:
February 2003
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Re: converting 18R turbo to EFI - update: turbo fitted
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Sat, 14 August 2004 03:56
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hi Machina,
old log manifold (if i can find it) goes to Ben - sorry. but it is stuffed anyway (warped and intake bits cut out).
your t03 would be much better suited to an 18R than the big arsed t04 (the t25 is similar size i think?) - but unless you work on lowering compression ratio (mine is at 7.4:1) you'll have massive detonation/pinging problem. cheap way is a spacer plate (not advised) better solution is to attack head with grinding tools but get a pro to do it. In the long run, i'd suggest you chuck a webber on it and maybe extractors - but get a crossflow motor if you want to turbo it as this setup is a PITA for plumbing.
fuel pump was a holley low pressure.high vol (blue i think) near the fuel tank - there was a simple 'bleed' hose leaving the carbi and connected to return line to control fuel pressure - a better solution would have been FPR but seeing as the whole system was low pressure, it did the job...
cheers,
Charles.
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Location:
Ballarat, Vic.
Registered:
February 2004
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Re: converting 18R turbo to EFI - update: turbo fitted
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Sun, 15 August 2004 08:16
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fair enough.
ill get a head ported out and use my 38DGMS weber [previously from, well, still on, my 2ltr gemini], and find a set of extractors.
im not too keen on spending a great heap on the 18r, its a heap.
i think ill use the t03 on a single turbo 1G, or 18-RG if i can find one.
thanks anyways,
M.
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Location:
Tamworth
Registered:
June 2004
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Re: converting 18R turbo to EFI - update: new turbo manifold
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Mon, 16 August 2004 09:35
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hey dude,
lol what car is this beast in?
brad
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