Lemons 1978 Celica - Page 3

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  1. #21
    CelicaSupra.com Member brett85p's Avatar
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    Our constant transmission woes are making me think about adding a trans oil cooler. The Aisin AR-5 Transmission is basically an R154 so this kit should work but I plan to make something a little more cost efficient https://www.driftmotion.com/Driftmot...t-p/dm3561.htm perhaps with this to save the need for wiring a fan https://derale.com/products/fluid-co...3-271253202964

    Anyone having problems with the r154 shifting between 3rd and 4th?
    We have been through 6 transmissions in 3 years the basic symptom is that on the up shift it will pop straight out of 4th gear when you release the clutch, you can hold the shifter and it will stay in gear sometimes with a clunk or grind. Eventually it gets to the point where it will not go into 4th.
    1978 Toylet Celica LeMons Racecar
    2.2 Ecotec Engine, Colorado Trans, Mk1 Supra Rearend

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  3. #22
    CelicaSupra.com Member brett85p's Avatar
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    I had a friend pull one of our failed transmissions apart and he found that "the parts are actually still all in good usable shape but everything in the transmission is covered in a fine layer of powdered steel including the grooves in the baulk ring which i think is preventing the brass from getting traction on the steel and essentially acting like they are worn out. getting the powder to come out seems to take quite a bit of manual effort.

    I'm fairly certainly this is due to overheating the oil but if you wanted to get fancy you would be served well by putting a filter in that oil cooler circuit. You could also get fancy on the oil return circuit and have it spray the 3rd gear, the intermediate gear and the baulk rings of 3rd and 4th to keep them as cool as possible and to also flush out the metallic dust."


    So I ordered this bad boy yesterday http://www.jegs.com/i/Moroso/710/41200/10002/-1 Filter and cooler all in one and a Marco UP2 Oil Transfer Pump, along with banjo fittings and a one way valve. Hopefully I can find some place under the car to mount all of this!

    Next race is Road Atlanta in December with LeMons
    1978 Toylet Celica LeMons Racecar
    2.2 Ecotec Engine, Colorado Trans, Mk1 Supra Rearend

  4. #23
    CelicaSupra.com Member revvhappy's Avatar
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    Endurance racing brings out the weak links in every car. I've been lucky so far with transmissions but the diff required a cooler.

    You might try fabricating a duct and "cold air" box for the cooler somewhere in the engine bay and venting out the hood. Shorter oil lines and more protection for the cooler/filter.

    If the Supra is still in one piece after the October AMP weekend I'll be at Road Atlanta for the Lemons race, too.

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  6. #24
    CelicaSupra.com Member drjim's Avatar
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    Endurance racing brings out the weak links in every car.

    Truer words are rarely spoken!

    - Jim
    1985 5-speed "Ms. Swan"

    OH, What A Feeling!

  7. #25
    CelicaSupra.com Member brett85p's Avatar
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    Quote Originally Posted by revvhappy View Post
    Endurance racing brings out the weak links in every car. I've been lucky so far with transmissions but the diff required a cooler.

    You might try fabricating a duct and "cold air" box for the cooler somewhere in the engine bay and venting out the hood. Shorter oil lines and more protection for the cooler/filter.

    If the Supra is still in one piece after the October AMP weekend I'll be at Road Atlanta for the Lemons race, too.
    Awesome, I have never been and am looking forward to it, do they do garage rentals?
    1978 Toylet Celica LeMons Racecar
    2.2 Ecotec Engine, Colorado Trans, Mk1 Supra Rearend

  8. #26
    CelicaSupra.com Member revvhappy's Avatar
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    There are no garages available at RA. Most of the paddock is not flat, either... and there are only a few power outlets.

    The track is worth it.

  9. #27
    CelicaSupra.com Member drjim's Avatar
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    The track is worth it.

    Absolutely! One of the most beautiful road courses in the USA!
    1985 5-speed "Ms. Swan"

    OH, What A Feeling!

  10. #28
    CelicaSupra.com Member brett85p's Avatar
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    Wow Road Atlanta!
    What an awesome racetrack. We struggled with snow and rain but eventually the track dried out. The last hour was the best hour of racing I have done. Unfortunately on Saturday we had a rear brake line fail and this cost two stops, first one was diagnosis and wind the brake balance to all front and then 4-5 laps later the fluid dropped as some must have been getting past so we blocked it off at the master cylinder. This resulted in a very firm pedal and some sketchy moments in traffic on a wet track but I did manage to get down to 1:57 in the wet with only front brakes. the 25 minutes in the pits was the difference in laps between 13th and potentially 3rd not to mention adding a stop on Sunday so I could have a dry hour.

    The transmission cooler/filter seemed to do it's job, the trans lasted the whole race but I'll wait for one more before declaring victory and pushing the Solstice automatic to the back of the garage. We all went to 16 inch wheels (225/50/16 Falken Azenis 615k+) this gave us good top speed on the back straight with a slight loss of speed out of the corners if we got slowed down by traffic.

    Last hour in 10 minutes bites due to high resolution camera below and we streamed most of the race on Facebook (Occupy Pit Lane) until the data plan expired on Sunday. https://www.facebook.com/groups/1709...f=group_header

    Part 1. https://youtu.be/RPD6IqJqp2g
    Part 2. Lots of traffic and a nice lap chasing the Toyota PE Motorsport Corolla https://youtu.be/YPuLafqSyfc
    Part 3. Catching up to Bert One and a lap trying to get by the big wang BMW starting at 3:35 https://youtu.be/yAu4QTVWJZI
    Part 4. Still chasing Bert One trying to fond a way past, eventually Bert lets me go past. Both 3 Pedal Mafia cars make an appearance at 7:20 https://youtu.be/aUeVgA3bpB4
    Part 5. Just avoiding contact with Tetnus racing at 4:05 https://youtu.be/FLMn6Pci4pQ
    Part 6. Last 5 minutes https://youtu.be/98oI09d43jg

    Data logged here: https://podium.live/events/toylet-road-atlanta-lemons
    1978 Toylet Celica LeMons Racecar
    2.2 Ecotec Engine, Colorado Trans, Mk1 Supra Rearend

  11. #29
    CelicaSupra.com Member SupraFiend's Avatar
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    Cool! I love driving Road Atlanta in Forza Motorsports. One of my fav tracks. Way too far away to do a lapping day at for me though lol
    Black 86 mk2 Project Car
    New SDR 86 mk2 Daily User, Highway Cruiser AND Parking Lot Abuser in the works!

  12. #30
    CelicaSupra.com Member revvhappy's Avatar
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    Already signed up for the Champcar event there in February.

    I heard that you had fun with the Hong Norrth MX3.

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