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rx793
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Location:
Perth, Western Australia
Registered:
June 2003
 
18r-g has NO GO!! Sat, 24 July 2004 15:38 Go to next message
My 18r-gu...up until recently i belived that it went really well. It runs like a dream. Idles beatufully and sounds awesome. Then the other night i went for a ride in a mates ta22 with 2tg in it. The 2tg was standard exept being recently dino tuned and the carbs re-jetted or something. That car had so much pull. The pickup left mine for dead. I was back in my seat n shit. Can anyone give any ideas why? could it just be the carbs> even tho it runs great?
i have 150 psi across all cylinders..so thats ok?
im quite annoyed now..that i get owned by a standard 2tg against my 18r-gu. Is that normal?
thankx
Steve
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munki
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Location:
Gold Coast
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October 2002
Re: 18r-g has NO GO!! Sun, 25 July 2004 02:11 Go to previous messageGo to next message
18rg > 2tg

150 on all 4 is a bit low 170 is std i think with a limit of 140 difference of 14 per cyl.
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THE WITZL
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Toymods Social Secretary

Location:
Sydney
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July 2002
 
Re: 18r-g has NO GO!! Sun, 25 July 2004 02:42 Go to previous messageGo to next message
it depends on what pistons you have in the 18R-G. There were three most common types, being:

# 9.7:1
# 8.7:1
# 8.3:1


As for the 2T-G being faster, most likely its the tune of your 18RG. Get it rejetted and dyno tuned and you should be very happy.
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Mr DOHC
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Location:
Brisbane
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October 2002
 
Re: 18r-g has NO GO!! Sun, 25 July 2004 08:38 Go to previous messageGo to next message
bite me, i have 125 in all 4 Shocked
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people100
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Location:
Rocklea qld
Registered:
February 2003
 
Re: 18r-g has NO GO!! Sun, 25 July 2004 09:24 Go to previous messageGo to next message
I also got told these engine had lower compression and it was fine. Is this right???
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river
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Location:
Land of Oz
Registered:
June 2004
Re: 18r-g has NO GO!! Sun, 25 July 2004 09:40 Go to previous messageGo to next message
Hi,

Don't forget the 2TG is a pokey little engine and it is in a TA22 which weighs in at a paltry 940kg. However, I'd still get your motor checked.

seeyuzz
river
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munki
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Location:
Gold Coast
Registered:
October 2002
Re: 18r-g has NO GO!! Mon, 26 July 2004 01:31 Go to previous messageGo to next message
18RG Head series 88250 with 8.7:1 pistons

STD 170psi
Limit 142psi
difference B/W Cyl's 14psi

from the toyota book.

but give everything a check over plugs points timing valve clearences, buy yourself a balanceing guage and give it a tune it isnt as hard as you think.

[Updated on: Mon, 26 July 2004 01:44]

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Jason
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Location:
Canberra
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December 2002
   
Re: 18r-g has NO GO!! Mon, 26 July 2004 03:19 Go to previous messageGo to next message
Check your cams too someone along the way might have swapped them for GEU cams which will affect your performance.
Other than that i would tend to agree with Witzl and get the carbies tuned then have another go.

My last 18rg had about 195psi or atleast thats what it said on the guage i was running 9.7:1 pistons tho.

Cheers
Jason
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rx793
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Location:
Perth, Western Australia
Registered:
June 2003
 
Re: 18r-g has NO GO!! Mon, 26 July 2004 13:00 Go to previous messageGo to next message
My engine is an 18r-geu...with carbies:P so ya know Very Happy
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CLG
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I supported Toymods

Location:
Perth, Western Australia
Registered:
December 2002
Re: 18r-g has NO GO!! Mon, 26 July 2004 13:13 Go to previous message
Heavier car versus lighter car, tuned motor versus non tuned motor, it all adds up!!! Focus on the small things and the performance will come in time, but always enjoy it for what it is! 18RG's are typically "slow" under 3000 revs, I've always found too.
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