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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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 F series Diff Drum to Drum
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Mon, 30 December 2002 13:26
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Complete Diff assembly from a MX23 Auto.
Measures 1415mm from drum face to drum face ( Perfect width for an RA40 ! )
Toyota RWD 4 Stud Pattern - Open centre with unknown Ratio. (Too lazt to check ! )
$120 ono.
0416 181 284
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Banned member
Location:
Brisbane
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Mon, 30 December 2002 22:31
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i think you need to mow your lawn 
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Toymods Board Member
Location:
Sydney
Registered:
September 2002
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Re: F series Diff Drum to Drum
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Tue, 31 December 2002 02:27
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If it's helps... It's a F312..Pretty sure it's a 4.111, manual I think were 3.9.. 
Could be wrong.
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Tue, 31 December 2002 06:48
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F312 is 3.909:1 open centre 7.5", Pumpkin.
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I supported Toymods
Location:
south of the big smoke
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Tue, 31 December 2002 14:33
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how much difference in ratio is it from a ta23 diff
rod im interested ill talk to ya on icq
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Sat, 04 January 2003 02:53
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Thanks Pumpkin/GT, It is a F312 - ie 7.5" 3.909 open centre 
Oz Craig,
Mate the RA23 will have a 4.100 Centre (6.7") Not sure how wide the RA23 Diff is I don't have one here to measure. The MX23 Diff is the same width as an RA40 diff tho !
The 3.909 ratio is better suited to a Turbo engine ove a N/A one as it will load the Turbo up more and should in turn bring it on boost sooner
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Location:
PNG
Registered:
June 2002
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Re: F series Diff Drum to Drum
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Sat, 04 January 2003 09:13
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Rodney
Is a MX23 an about 76 Mark2 Corona? If so sold!!
Craig
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Sat, 04 January 2003 13:27
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It is indeed.
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Sat, 04 January 2003 15:55
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Craig,
Mate thats exactly what it is out of ! You even got the year right !
Give me a call if your interested in it.
0416 181 284
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Location:
Canberra
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Sun, 05 January 2003 02:59
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The 3.909 ratio is better suited to a Turbo engine ove a N/A one as it will load the Turbo up more and should in turn bring it on boost sooner
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really? Whats the benefit if of coming on boost a tiny bit earlier in real terms? Surely your acceleration is still hampered by the taller diff ratio enough to negate any earlier spoolup?
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Sun, 05 January 2003 05:36
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Diff is Sold thanks
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Sun, 05 January 2003 05:49
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TE-72 Turbo,
I have every intention of testing out this therory myself once Tina's car is on the raod. However the small twin Turbo's on the 1G may not aid the theory all that well.
Theory suggests that the greater the load on the engine the sooner the Turbo will come on boost and it is supposed to well an truely outway the benefits of the taller gearing. I intend to run bot a 3.7 and a 4.1 (or 4.3 if I can find one) and see the difference personally.
I am aware of one application where the car did not make boost in first gear due to large turbo's when running a 4.1 ratio but after fitting a 3.7 it now generates boost in first quit happily.
One again this is all as I have been told and I am looking forward to testing it all out for myself. It could simply be that the turbo engines are better with a lower ratio (numerically) purely so you don't have to change gears so often ?
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Location:
Canberra
Registered:
May 2002
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Re: F series Diff Drum to Drum
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Sun, 05 January 2003 11:57
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Fair enough. I'd be interested to hear the results once you've tried both combinations. As you said, you may find minimal result with smaller, early boosting turbos on the 1G, but in the case of my 4AGTE, having a large turbo & 3.7:1 diff ratio results in enough drop in revs between gears to necessitate almost flat shifting to stay within an effective power range. I will be fitting a 4.1:1 in the next week or so
CHeers
Phil
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