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Thread: TA22 Facts and specifications

  1. #1
    Toymods Vice President Chief Engine Builder TheToyman75's Avatar
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    Default TA22 Facts and specifications

    This is a slightly updated copy of the article I wrote for the old tech section.

    TA22 Celica Facts and Specifications


    History (Australia)

    The Toyota Celica TA22 was first released for sale in Dec 1970 and continued until September 1975 when the xA23 was released, closely followed by the RA28 from 1976 to 1977. From the rear the 1970 to July 1972 Celica’s are distinctly different from the later models.

    The “early” version was furnished with the petrol tank in the boot floor and the petrol filler located behind a chrome alloy flip plate between the rear taillights. The tail lights were flat in comparison to the later version. This earlier version was void of a rear demister (It was a factory option) and had smaller stub axles than the 7208 onwards models.

    In August 1972 the petrol tank was relocated to behind the rear seat and the flat taillights were replaced with the more common shapely items. The washer jets were relocated from the centre panel work to the air vents. The Air vents themselves were changed again in January 74..

    Early Front vent


    Late Front vent


    The fuel tank relocation was carried out in order to reduce the chance of rupturing the petrol tank in a rear end collision. The petrol filler was relocated to the passenger side rear roof turret. The vehicle badging was updated to the "italics" style for front and rear however the cursive celica side badge remained unchanged until January 74

    Early Rear 7012 - 7207


    You can see in this scan the spare wheel in the boot and the flat tail lights are all red (JDM Spec) Here we got red/amber tail lights.

    The filler neck is shown clearly here in this scan.


    And the first series rear badge work is clearer on this one.


    And of course the first round of side badgework, The Dragon emblem only being from 7012-7207 (Originally Green - later genuine parts runs have been Blue and Turquoise)


    Mid series Rear 7208-7312


    You can see allot of the variances in this shot. The early style petrol cap is nice and clear as are the rear quarter vents and italic style badging. The early series round edge guard lips are also nice and clear. These all changed in January 1974.

    January 1974 saw a minor facelift for the TA22. The guard lips were squared off, and the rear quarter vent was changed, and the badge styling got bolder and "Block" style.

    Late Model Rear


    This pic shows most of the 1974 facelift changes well.


    You can see the bolder square edge guards and the new rear quarter vents. The block style "celica" side badge and emblem is also shown.

    The Engines

    The Australian Market saw only three Engine configurations, the 2T, 2T-B and the 2T-G. The most common of these being the 2T.

    The 2T engine was standard in the LT model and is a push-rod type 4-cylinder engine displacing 1588cc’s. “It features: a cross-flow type hemi head for more efficient combustion, intake and exhaust; Centre sparking plugs for even burning, better cooling efficiency of plugs; Double rocker shafts actuating each intake and exhaust valve, giving nearly the same high level performance achieved through use of double overhead cams” (As specified in the Toyota Sales leaflet). The 2T engine is fitted with a single dual barrel carburetor with an automatic choke. Its maximum output is 102 HP at 6000 rpm with a maximum torque of 14.0 m-kg (101 ft-lb) at 3800 rpm.

    The 2T-B engine was standard in the ST model; it is essentially identical to the 2T but was fitted with twin downdraft solex carburetors. The 2T-B produces a maximum output of 113 HP at 6000 rpm with a maximum torque of 15.1 m-kg (109 ft-lb) at 4200 rpm.

    The 2T-G engine was standard in the GT model, which was not mass released in Australia. The 2T-G is a 4 cylinder in line DOHC displacing 1588cc’s. It features: “a cross-flow head with center sparking plugs; Water jacketed aluminum alloy intake manifolds for quicker warm-up and prevention of carburetor icing: Dual solex “40 PHH” carburetors with idle limiter and double floats for ideal response under hard cornering, quick acceleration, fast stopping; Five-bearing crankshaft for smoothness and added durability; Pistons with a special auto-thermic plate built-in preventing deformation under extreme heat and keeping proper spacing and alignment between piston and cylinder wall – a feature developed through the stresses of racing; A 9.8:1 compression ratio for more power with less fuel. This 2T-G type engine puts out a maximum horsepower of 124 at 6400 rpm with a maximum torque of 15.6 m-kg (113 ft-lb) at 5200 rpm”. (As specified in the Toyota Sales leaflet)

    Engine Specifications

    2T, 2T-B
    Firing Order: 1-3-4-2
    Ignition Timing: 2T – 10 Degrees BTDC / 800rpm
    2T-B – 12 Degrees BTDC / 800rpm
    Compression ratio: 2T – 8.5:1
    2T-B – 9.4:1
    Bore and Stroke: 85.0 x 70.0
    Valve Size: Intake - 41mm, Exhaust – 36mm
    Cam Shaft: Lobe Height In 38.36 ~ 38.46, Lobe Height Ex 38.25 ~ 38.35
    Cam Lift: In 6.39, Ex 6.42
    Compression at 250 rpm: 2T Specified – 163 or 170 Psi (Depending on publication)
    2T Limit – 128 Psi
    2T-B Specified – 170 or 182 Psi (Depending on publication)
    2T-B Limit – 142 Psi
    Difference Between each Cylinder: Less than 14 Psi

    2T-G
    2T-G Engine modifications as per April 1973 were from Engine Number 2T-8038333
    Firing Order: 1-3-4-2
    Ignition Timing: 16 Degrees BTDC / 800 rpm
    Compression ratio: 9.8:1
    Bore and Stroke: 85.0 x 70.0
    Valve Size:
    Intake – 43mm (Up to April 1973), 44.5mm (April 1973 Onwards)
    Exhaust – 37mm (Up to April 1973), 38.5mm (April 1973 Onwards)
    Cam Shaft:
    Lobe Height In 45.87 ~ 45.97 (Up to April 1973)
    Lobe Height In 46.37 ~ 46.47 (April 1973 Onwards)
    Lobe Height Ex 45.87 ~ 45.97 (Up to April 1973)
    Lobe Height Ex 46.37 ~ 46.47 (April 1973 Onwards)
    Cam Lift: In 9.82 (Up to April 1973), In 10.27 (April 1973 Onwards)
    Ex 9.82 (Up to April 1973), Ex 10.27 (April 1973 Onwards)
    Compression at 200 rpm: Specified-165 or 185 Psi (Depending on publication)
    Limit-142 or 163 Psi (Depending on publication)
    Difference Between each Cylinder: Less than 14 Psi


    Maximum Speeds

    The LT model was available with 3 different transmissions, 4 or 5-speed manual or 3 speed automatic. The top speeds are as follows: 5 Speed – 175 kph (110 mph)
    4 Speed – 170 kph (106 mph)
    Automatic – 160kph (100 mph)

    The ST model was available with a 4 or 5 speed manual transmission. The top speeds are as follows: 5 Speed – 180 kph (113 mph)
    4 Speed – 175 kph (110 mph)

    The GT model was available with a 5-speed manual only. It had a top speed of 190 kph (120 mph).

    The Transmission

    The TA22 was released with three transmission options. Five speed Manual (T50), Four speed Manual (T40) and the Three speed Automatic.

    T50 and T40 Ratios:
    First – 3.587
    Second – 2.022
    Third – 1.384
    Fourth – 1.000
    Fifth – 0.861 (T50 Only)
    Reverse – 3.484

    Automatic Ratios:
    First – 2.450
    Second – 1.450
    Third – 1.000
    Reverse – 2.222


    The Differential

    There are four different Diff Ratios supplied on the TA22, the Four Speed model came with a standard diff ratio of 3.909:1 and an optional 4.100:1 ratio. The Five Speed model came with a 4.100:1 ratio and the automatic model came with a 4.100:1 ratio as standard with an optional 4.300:1 ratio. The Australian market almost exclusively received the 4.1:1 ratio diff.

    Dimensions

    Overall Length: 4165mm
    Overall Width: 1610mm
    Overall Height: 1310mm
    Wheelbase: 2425mm
    Tread Front: 1280mm
    Tread Rear: 1285mm
    Ground Clearance: ET, LT & ST = 175mm, GT = 170mm


    Kerb Weights

    GT - 1005 kg
    ST - 985 kg
    LT - Automatic 980 kg
    - Manual 970 kg
    Last edited by TheToyman75; 23-05-2019 at 09:25 AM. Reason: Updates
    1971 2T-B Celica TA22 ST.
    1971 2T-? Celica TA22
    1973 2T-G Celica TA22, aka "The Unicorn".
    1975 2T-G Celica TA27 GT
    1976 2T-G Celica TA23, aka "The Colonel".
    1985 3F Auto FJ62 Landcruiser
    1989 7M-GTE MA70 Supra, aka "The Poopra"
    History: Rods Classic Celica Sampler thread.

  2. #2
    back into it Chief Engine Builder
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    Default Re: TA22 Facts and specifications

    good post rod! but i cant keep my eyes of your rep number! if i had thought of it thats were mine would stop!

  3. #3
    Photographer and Backyard Mechanic Rinmax's Avatar
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    Default Re: TA22 Facts and specifications

    Thanx Toyman, I've been trying to find 2TG valve sizes, then you just post them here so +rep for you. Good write up bud.
    "It's an ingenious solution to a problem that should never have existed in the first place." - JM

    "A Ferrari is a scaled down version of god while a Porsche is a Beetle with mustard up its bottom." - JC

  4. #4
    back into it Chief Engine Builder
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    Default Re: TA22 Facts and specifications

    rinmax you could have waited to rep him! now he is going to think im strange like everyone else!lmao

  5. #5
    Photographer and Backyard Mechanic Rinmax's Avatar
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    Default Re: TA22 Facts and specifications

    lol sorry did it without even looking.

    FOR THE RECORD: When Kingmick made his comment above the Toyman had a rep of 69.
    I officialy appologise for any inconveniance caused and will forward on a letter for forgiveness to the victims of this joke gone wrong.

    *hangs head in shame*
    "It's an ingenious solution to a problem that should never have existed in the first place." - JM

    "A Ferrari is a scaled down version of god while a Porsche is a Beetle with mustard up its bottom." - JC

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    toyota-less Carport Converter skiddz's Avatar
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    Default Re: TA22 Facts and specifications

    champion toyman, i would give ya rep but i have to spread the love so i'll get back to ya on that one
    2T out 4A in....

    4A out 3VZ in. 3vzfe rebuild, RWD-ising, and conversion for ta22

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    Junior Member Domestic Engineer myne's Avatar
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    Default Re: TA22 Facts and specifications

    Interesting that the sprinter has 25mm shorter wheelbase, 75mm wider front track, and 65mm wider rear track.
    I've had a theory for a while that the sprinter was nothing more than a cheapened Celica chassis, and that the TA22 would share more or less the same dynamics as the sprinter, but I guess they did make some changes afterall.

  8. #8
    Village Idiot Automotive Encyclopaedia
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    Default Re: TA22 Facts and specifications

    nice one rod
    i am building a shed out the back and needed the length of the celica
    hence my shed is now 4.5m wide and the celica is staying.

  9. #9
    Purple is the new black! Automotive Encyclopaedia sillycar chick's Avatar
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    Default Re: TA22 Facts and specifications

    Great stuff Rod, I love these articles

    I am really confused on something, maybe you can answer my questions....

    Quote Originally Posted by TheToyman75
    Maximum Speeds

    The LT model was available with 3 different transmissions, 4 or 5-speed manual or 3 speed automatic. The top speeds are as follows: 5 Speed 175 kph (110 mph)
    4 Speed 170 kph (106 mph)
    Automatic 160kph (100 mph)

    The ST model was available with a 4 or 5 speed manual transmission. The top speeds are as follows: 5 Speed 180 kph (113 mph)
    4 Speed 175 kph (110 mph)

    The GT model was available with a 5-speed manual only. It had a top speed of 190 kph (120 mph).

    The Transmission

    The TA22 was released with three transmission options. Five speed Manual (T50), Four speed Manual (T40) and the Three speed Automatic.

    T50 and T40 Ratios:
    First 3.587
    Second 2.022
    Third 1.384
    Fourth 1.000
    Fifth 0.861 (T50 Only)
    Reverse 3.484

    Automatic Ratios:
    First 2.450
    Second 1.450
    Third 1.000
    Reverse 2.222


    The Differential

    There are four different Diff Ratios supplied on the TA22, the Four Speed model came with a standard diff ratio of 3.909:1 and an optional 4.100:1 ratio. The Five Speed model came with a 4.100:1 ratio and the automatic model came with a 4.100:1 ratio as standard with an optional 4.300:1 ratio. The Australian market almost exclusively received the 4.1:1 ratio diff.
    So you are saying the LT, ST and GT had top speeds with a 5 speed of 175kph, 180kph and 190kph respectively.

    You have also given the T50 ratios, and the diff options that were available.....

    How could each of the models have different top speeds? Did they have different box ratios, or different diff ratios?

    I am confused becuase my TA22 does around 3000-3500rpm at around 60-70mph (so say 100-110kph). It did this before the engine swap, and after - as when I put in the hybrid I borrowed the box out of dad's "GT replica" whilst I fix the synchros in mine.

    Dad has been telling me from his memory, mums "GT replica" sat on around 2500rpm at around 100kph..... ???? Did they have a different diff ratio? Mind you, he could be slightly wrong as the car has been off the road over 10 years, and he is getting on But he swears it sat on 2500rpm....

    Hope you can answer my querie. Thanks Rod
    51LII - 1972 TA22 Celica | Morpheous Metallic | 4AGE 20v Silvertop | Razorback ECU | W58
    Toyota Car Club (Qld)

    Quote Originally Posted by TheToyman75 View Post
    There is not much hotter than a Freshly painted Celica, Unless its the reflection of a freshly painted Celica on a freshly painted Celica

  10. #10
    toyota-less Carport Converter skiddz's Avatar
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    Default Re: TA22 Facts and specifications

    i dont see why the ST and LT speeds are different, twin carbs more fuel maybe... but i certainly can see why the GT is a little quicker, the twin cam has a bit more potential to rev
    2T out 4A in....

    4A out 3VZ in. 3vzfe rebuild, RWD-ising, and conversion for ta22

  11. #11
    Junior Member Domestic Engineer 71TA22's Avatar
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    Default Re: TA22 Facts and specifications

    Quote Originally Posted by sillycar chick
    Dad has been telling me from his memory, mums "GT replica" sat on around 2500rpm at around 100kph..... ???? Did they have a different diff ratio? Mind you, he could be slightly wrong as the car has been off the road over 10 years, and he is getting on But he swears it sat on 2500rpm....
    I think your old mans memory is suspect. No offence meant.

    3,500rpm more like. I think he's lost 1,000 rpm over the years.
    Mike
    71 TA22

    My Car

  12. #12
    Toymods Vice President Chief Engine Builder TheToyman75's Avatar
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    Default Re: TA22 Facts and specifications

    Quote Originally Posted by skiddz
    i dont see why the ST and LT speeds are different, twin carbs more fuel maybe... but i certainly can see why the GT is a little quicker, the twin cam has a bit more potential to rev
    The ST was fitted with the 2T-B engine, It may only make 11HP more than a 2T but that is over 10% more power, It also made more torque. The 2T-B wasn't just a carby change. It was higher compression, it enjoyed more base timing and of course had a better intake and fuel delivery. If that doesn't give you at extra few K's in the top speed department something is off.
    1971 2T-B Celica TA22 ST.
    1971 2T-? Celica TA22
    1973 2T-G Celica TA22, aka "The Unicorn".
    1975 2T-G Celica TA27 GT
    1976 2T-G Celica TA23, aka "The Colonel".
    1985 3F Auto FJ62 Landcruiser
    1989 7M-GTE MA70 Supra, aka "The Poopra"
    History: Rods Classic Celica Sampler thread.

  13. #13
    Toymods Vice President Chief Engine Builder TheToyman75's Avatar
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    Default Re: TA22 Facts and specifications

    Quote Originally Posted by sillycar chick

    How could each of the models have different top speeds? Did they have different box ratios, or different diff ratios?

    I am confused becuase my TA22 does around 3000-3500rpm at around 60-70mph (so say 100-110kph). It did this before the engine swap, and after - as when I put in the hybrid I borrowed the box out of dad's "GT replica" whilst I fix the synchros in mine.

    Dad has been telling me from his memory, mums "GT replica" sat on around 2500rpm at around 100kph..... ???? Did they have a different diff ratio? Mind you, he could be slightly wrong as the car has been off the road over 10 years, and he is getting on But he swears it sat on 2500rpm....

    Hope you can answer my querie. Thanks Rod
    Dana,

    Mike has pretty well covered the RPM thing 3200 - 3500 or there abouts sound right for the 100kph end of things. Mind you my Ta22 has been off the road for 5 years so its a distant memory for me too.

    The Top speed variance is due to the increase power and redline and nature of the different engines. The engine doesn't alter what rpm equals what speed, but the more power the further up the RPM band it can push the vehicle in top gear. Getting to redline in the lower gears is easy in 5th gear and actually in motion its not so easy. The 2TB makes more than the 2T so it can push it that extra few hundred RPM at full noise. The GT TA22 goes quicker again for a number of reasons. The 2TG makes more power than the 2T-B (11 More hp than a 2T-B as fitted to the TA22), The factory fitted 2TG flywheel is a good deal lighter than a 2T item. (Roughtly 12kg verses 8kg) and hence the 2TG revs allot easier which is also a big factor in why the 2TG has a higher factory redline.

    Hope that helps
    1971 2T-B Celica TA22 ST.
    1971 2T-? Celica TA22
    1973 2T-G Celica TA22, aka "The Unicorn".
    1975 2T-G Celica TA27 GT
    1976 2T-G Celica TA23, aka "The Colonel".
    1985 3F Auto FJ62 Landcruiser
    1989 7M-GTE MA70 Supra, aka "The Poopra"
    History: Rods Classic Celica Sampler thread.

  14. #14
    Purple is the new black! Automotive Encyclopaedia sillycar chick's Avatar
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    Default Re: TA22 Facts and specifications

    Thanks for clearing it up Rod, maybe dad has just lost his mind!
    51LII - 1972 TA22 Celica | Morpheous Metallic | 4AGE 20v Silvertop | Razorback ECU | W58
    Toyota Car Club (Qld)

    Quote Originally Posted by TheToyman75 View Post
    There is not much hotter than a Freshly painted Celica, Unless its the reflection of a freshly painted Celica on a freshly painted Celica

  15. #15
    Toymods Net Nazi Too Much Toyota river's Avatar
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    Default Re: TA22 Facts and specifications

    Hi,

    Quote Originally Posted by sillycar chick
    maybe dad has just lost his mind!
    Yep, kids do that to us!

    seeyuzz
    river
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