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Location:
Sydney
Registered:
August 2004
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1g track car info
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Tue, 23 November 2004 01:07
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hi guys,
just after some advice on a track car.
ra40 celica - 1g-ge, re-cored ra40 radiator, w58 g/box, king springs and lowered suspension, 7" wide tyres, front discs and rear drums, t series diff with 3.9 centre.
Just want some advice on what would be a good idea to do before doing some frequent track work with it. obviously the rear drums would have to change but what about the engine - for reliability sake. are the 1g-ge's a tough little motor???? the g/box should hold up as long as i don't thrash it. but the radiator i have doubts on....
any info would help
cheers
jarvis 
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I supported Toymods
On probation
Location:
Brisbane, Queensland
Registered:
January 2003
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Re: 1g track car info
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Tue, 23 November 2004 01:14
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I'd say if you were going to do consistant track work piss the T series diff off...
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: 1g track car info
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Tue, 23 November 2004 01:15
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The motor should be fine as long as the radiator is big enough.
Darren Cowling had a set of coilovers made for his 1G-GTE RA40. It's worth pursuing that avenue if you're gonna be doing track work.
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Location:
Brisbane
Registered:
May 2002
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Re: 1g track car info
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Tue, 23 November 2004 01:17
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Agreed about the diff; track work is very harsh on drivetrain components. An F series with LSD centre would work nicely and you won't have any reliability problems.
Oh and make sure you have a good clutch!
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Location:
c'town, NSW
Registered:
May 2002
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Re: 1g track car info
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Tue, 23 November 2004 01:26
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Hey Dan,
1st would be brakes (hilux/peugeot swap is a good one but u have to test fit a wheel onto someones car to make sure the 14's fit over them. else u can use pug disc and RT132 sumitomo twin piston caliper)
2nd LSD: do a search on F series and G series diff conversions.
3rd swaybars: needs to be done.
other thing would be to get rid of the air con condensor, it might inhibit the airflow (may as well get rid of other air con bits as well for weight).
other things to worry about are: what type of racing will u be doing
i was gonna hillclimb the RA40 at one stage but because there is a 6cylinder where a 4cylinder should be they were gonna put me into the improved production class. Then they would have been more stringent on scrutineering and i would be racing against heavily modified and caged toranas and escorts.
else if your gonna have some fun at wakefield drive days then u dont have to worry about any of that.
have a good one ! 
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Registered:
November 2002
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Re: 1g track car info
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Tue, 23 November 2004 01:43
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Standard RA23 14 inch steel rims will fit over a Corona / Hilux / Pug brake conversion with very minor grinding of the inside edge of the rims, and then only in a couple of (raised) spots.
I run these with Yoko A032R rubber on my car, when I do motorkhana's.
Extensive track work will kill your rear drums pretty quick so an F or G series rear end upgrade (with rotors) is good advice.
Run the best g/box and diff oil you can afford, Redline if possible, as the heat generated in these two items on a track can kill standard oil pretty quick as well as well.
Enjoy yourself, and while not knowing your background, if you ever bump into the local track instructor, ask him/her to show you the fastest way around the place, in your car.
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Location:
Madrid - Spain
Registered:
August 2002
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Re: 1g track car info
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Wed, 24 November 2004 02:40
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Have a look at the sump arrangment on our conversion. I took mine to Wakefield and killed a couple of big end bearings, but my sump is a little smaller and does not have any baffling.
I am going to use the Soarer front sump and pickup I got with my Gen3 motor. This is a lot bigger in volume and is well baffled.
Oil surge is rarely a problem in road cars but can be a big problem on a track.
I would also look into a strut brace to tighten up the front end.
Make sure you have good quality Dot4/Dot5.1 brake fluid and replace it regularily.
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Location:
Sydney
Registered:
August 2004
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Re: 1g track car info
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Wed, 24 November 2004 04:26
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okky dokky,
well, i am only planning on doing it on a club fun/hobby level not serious or anything so i don't have to worry about the scrutineering that much. apart from safety.
my first step was gonna be to remove all the air con system, any weight in the car and fit a roll cage.
next was to upgrade the radiator to a bigger desert coolers one. then baffle the sump somhow, then update the brakes and diff. a mate of mine who has a 302ci windsor powered ra23 said that hq holden discs will fit so i'll have to look at the logistics of that as well. the diff was gonna be a hilux one but after talking to him he said that all his experience on the motorsport scene has told him a 9" is the way to go as it works out the same cost and there is a better variety of ratio's for the track. weight being the only penalty. though they also use a bit more powered this is over come by the fact i'm planning either a 1g-gte convert or the more radical 1j conversion.
sway bars are a must and strut braces also and as for suspension i've got a few avenues being persued at the moment.
other than that i can't at the moment think of anything else.
i rang the improved production racing assoc and they won't even accept it due to the 6 cyl in the 4 cyl's spot.
any how, do the 1g's suffer from too much oil being pumped to the heads at high rev's?? the 308 holden had this trouble and i've heard many standard cars do when revved consistently hard.
once more any info would help....
cheers
jarvis 
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Location:
c'town, NSW
Registered:
May 2002
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Re: 1g track car info
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Wed, 24 November 2004 04:43
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euuuuuuuu kingswood brakes are poo
this was the celica brake upgrade back in the day when there wasnt a good celica brake upgrade.
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Location:
Sydney
Registered:
August 2004
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Re: 1g track car info
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Wed, 24 November 2004 04:48
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IN THAT CASE CONSIDER THAT IDEA SHIT CANNED!!!!!
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: 1g track car info
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Wed, 24 November 2004 04:53
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And you can find any ratio from 3.9 to 4.7 in a G-series (Hilux) diff. I can't see you wanting anything lower than that in a 2l track car. Can the idea about the 9 inch as well. Too heavy, and no real advantage.
Thanks to the Hilux diff being in 4WD's, you can get basically any sort of centre you want for them, clutch LSD's, Torsen's, lockers.
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Location:
Camden
Registered:
May 2002
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Re: 1g track car info
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Wed, 24 November 2004 08:47
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I got a ford 9" diff made for my 1ggte powered ra23. Any diff is heavy, sure the 9" is heavier but its not like you cannot lift the damn thing. I dont think it would be a great lot heavier than a hilux diff.
I chose this diff as i wanted to do it once and do it properly. Commodore disk brakes bolt straight up and you can use the stock cable for the hand brake. Also the centre will not slip not like those centres in the hilux and commodore borg warner diffs.
A 9" is definatley something to think about.
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