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Location:
Mornington Peninsula
Registered:
September 2002
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 01:24
 
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ok. i also have a rebuild 18R-GU in my RA28, and did the conversion myself (with bit of help  )
As for brakes, a simple, bolt in upgrade is either the XT-130 corona strut or RT-132 corona strut complete with their calipers and rotors on them. The XT-130 is a big single piston caliper with solid 10.5" rotor. The RT-132 is a twin opposed piston, 10.5" solid rotor brake (obviously better).
Both of these struts will bolt straight up, and have the same sping, shock etc mountings as the RA23 struts.
If you still want more you can get yourself the pugeot disc as listed in the brake upgrade article on Toymods and space the caliper out, or go the whole way and get the hulix 4-piston caliper.
Also a good idea would be to upgrade the brake master cylinder while you are at it. Upgrading to a hilux 15/16" brand new would be a good idea, esp when new they are less than $200.
Dizzy - im pretty sure an 18R-C dizzy will work just fine. Maybe an idea would be to get one with new/good points, and maybe even build yourself a Jaycar High Energy Ignition kit (good for points dizzy's)
Fuel pump - and 18R-C pump is ok
Get yourself some new engine mounts while you are at it! with the rough idle of the twincam, old engine mounts certainly can move around a bit. And having new urethane (all u can get now) mounts will certainly be better for staving excessive engine movement.
Obviously get a new 2" exhaust, they sound HORN and help the motor a lot.
Any gaskets/seals that you can buy easy enough, buy them. Eg, main seal, camshaft seal (?) and stuff like that. I was lucky here cos my motor was less than 5000k's since a complete rebuild.
LOTS OF RAGS to mop up the mess of gearbox oil, coolant, engine oil, grease, dirt and everything else which you are GOING to make 
HAve fun, and enjoy that twincam power!!
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Location:
Brisbane
Registered:
May 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 01:45
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You don't "need" to upgrade your suspension or brakes from a legal perspective, if that's what you mean. It is however a good idea to upgrade tired old suspension and worn out brakes, whether you're required to or not!
Brake upgrades have been covered a hundred times before so I won't go into that. Suspension is the usual - new springs (lowered if you want it to handle better), new shocks, new bushes (urethane for better accuracy).
Your engine should come with a fuel pump (it's attached to the block) so that will work fine. The 18R-C distributor definitely fits and works because I used one on my 18R-GU for a while.
As for other upgrades, it depends what you want to acheive! Note that an 18R-G loves a free-flowing exhaust, so it's not a bad idea to do something about that it you haven't already.
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Location:
Mornington Peninsula
Registered:
September 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 02:23
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Thanks for your input guys.
Norbie: There was no fuel pump attached to the block, one of the first things i noticed, I've probably got a spare somewhere. I own 6 18R's of some form. I wasn't sure that with the twin solex I might need something a bit better than the standard pump. I wasn't sure if legally I needed to to a brake and suspension upgrade. I'm pretty sure it has non standard springs on it, not sure about the shocks though.
Witzl: Got hundreds of rags!!! Thousands even. I don't know how the engine mounts are. The engine was rebuilt so I don't really know what was done to the engine bay. There's been a bit of stuff doen to the car but it's a mystery of what exactly has been done.
The Celica I'm putting the engine into has extractors and a 2" exhaust already. Would the extractors from my 18R-C be able to bolt strait up to the 18RG. Hate to replace them if I've already got them there!
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 02:29
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no way dude!!
extractors are totally different!!! on the 18R-C everything is on one side of the motor... on the 18R-GU intake and exhaust are on opposing sides, and the ports are waaaay diferent.
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Location:
Melbourne
Registered:
July 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 02:38
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You don't "need" to upgrade your suspension or brakes from a legal perspective,
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hey..
i don't thnik this is true..
froma legal perspective.
The 18rg was not a complied item in the ra23 celica thus meaning an engineers cert..
anymore than a ~15% power increase will means an instant brake upgrade.. it may be somthing as crappy as "get better brake pads", none the less. no one does it, but its the law.
18rg is a heavier motor, may need a front suspension upgrade, however, theres really no need.
tonnes of poeple put hot motors in cars and don't get them engineered me included.
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Location:
Brisbane
Registered:
May 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 03:13
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Well in NSW and Qld it's not necessary to upgrade anything; I know this because I got mine engineered no worries. I guess it may be different in Vic though.
The 18R-G is not significantly heavier than the 18R-C; if there's any difference at all it wouldn't be more than a few kg's (ie less than installing a bigger battery).
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Location:
Melbourne
Registered:
July 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 03:16
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well there you go.. ya learn somthing new every day...
in vic they bust your nuts over anyhting you do..
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 04:04
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yeah NSW its just a blue slip for the engine number change
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Location:
Mornington Peninsula
Registered:
September 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 06:00
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Figured that I wouldn't be able to keep the extractors, I'm not that lucky.
I keep seing the dollar signs popping up infront of my eys at the moment. 
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Location:
Melbourne
Registered:
July 2002
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Re: Upgrading to 18RGU
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Wed, 16 April 2003 06:02
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ha.. don't fret..
i'm sure you have a b/friend that will help you out. 
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Location:
brisbane
Registered:
March 2003
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Re: Upgrading to 18RGU
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Sat, 26 April 2003 07:16
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you dont need to all that to pass engineers as it is the same engine apart from head and intake it is still classed as an 18r which it is so you wont needf to do all those mods but even betetr brake upgrade.. simple bolt on from ra60/65 celicas struts are same but they have vented rotors im pretty sure you can use the same springs from the ra23.. im going to be doing that to my ra40 soon whemn i have it turboed... i am not sure if they are 2 spot or one spot calipers though.
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: Upgrading to 18RGU
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Sat, 26 April 2003 10:34
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they are single piston calipers on the RA-6* celica... and also a good thing to note is that those particular struts WILL NOT be very good for the camber of your front wheels. When mounted into an RA6* they are at a fairly decent angle to vertical.... whereas in the RA40 or RA23 they are mounted almost perpendicular to the ground. Hence the strut will induce positive camber on your front wheels. This CAN be fixed by an increase in the lower control arm's length, but that also messes with track width, and generally mucks around with the handling.
Best bet is upgrade to the RT-132 corona strut. DOESN'T affect geometry of the front suspension AT ALL, and has 10.5" solid discs, with twin piston calipers. Also allows for some HEFTY upgrades later on.
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Location:
Canberra
Registered:
December 2002
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Re: Upgrading to 18RGU
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Sun, 27 April 2003 00:06
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I agree with carl i just stuck the xt130 struts in my 23 and the improvement is pretty good for around the street if you wanted something for track then you would have to start thinking a bit more seriously. If you do this upgrade its a good idea to replace the pads etc.
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Location:
brisbane
Registered:
March 2003
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Re: Upgrading to 18RGU
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Sun, 27 April 2003 00:09
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yes but the celicas have no camber anyway if anything a tiny bit of positive even the ealier ra23/28/40's so it wouldnt be much difference at all.. i have a suspision you can put vb-vp commodore bearing plates on the struts... i have actually seen this done in a ra28 so that will fix the camber problem
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: Upgrading to 18RGU
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Sun, 27 April 2003 14:37
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if that does the trick for you
myself, i just like the idea of 100% Toyota bolt in parts
esp when you can upgrade directly to the larger ventilated pugeot discs and hilux 4 piston calipers!
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Location:
Brisbane
Registered:
May 2002
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Re: Upgrading to 18RGU
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Sun, 27 April 2003 23:21
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There's a lot to be said for the Supra brake upgrade, because you get to make a BIG BRACKET!
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Location:
Mornington Peninsula
Registered:
September 2002
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Re: Upgrading to 18RGU
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Mon, 28 April 2003 02:58
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Cool, thanks everyone. It will be a while down the track but it's good to know all this info so I know what I'm in for. The suspension isn't the original so I probably won't have to upgrade that (looks lowered properly [not cut springs] and the shockers look fairly new as well)
I'm going to do a brake upgrade no matter what, at the easter nat's seeing all these cars with heavily modified engines with stock brakes is just scary.
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Location:
Melbourne
Registered:
July 2002
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Re: Upgrading to 18RGU
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Mon, 28 April 2003 03:02
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smart girl! 
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Upgrading to 18RGU
