Is this cam wiped? Need Help! - Page 2 - LotusTalk - The Lotus Cars Community
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post #21 of 26 (permalink) Old 03-13-2018, 06:38 PM
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Some food for thought. If the cams are really that crappy then why is this not common on the celicas, matrix, Corollas, and vibes?
No idea...did Yamaha make the motors for those models too?
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post #22 of 26 (permalink) Old 03-13-2018, 06:53 PM
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They are all made the same with hundreds of thousands of examples out there. I'm not saying that there isn't an issue with these cams. But it's more likely an issue with the differences of how these motors are running in our cars.
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post #23 of 26 (permalink) Old 03-14-2018, 12:09 PM Thread Starter
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I've moved more to the school of thought that our front mount oil coolers have a larger roll to play in why the cams are doing this as it takes a lot to get the oil temps up in these cars. A fix to this is to put a left or right side mount oil cooler in the rear, but i doubt this alone will stop it permanently.

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post #24 of 26 (permalink) Old 03-18-2018, 09:44 PM
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Originally Posted by Nessal View Post
Some food for thought. If the cams are really that crappy then why is this not common on the celicas, matrix, Corollas, and vibes?
Could have to do with Lotus bumping the redline 500RPM?
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post #25 of 26 (permalink) Old 03-18-2018, 11:35 PM
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Get an oil temp gauge and dont go on the high lift lobe until oil is at 60C (140F).

I have stuck to this rule after advice from a Toyota Race tech and have done 120k km (75k Miles) in an SC Elise and high lift lobes are still good.

And stick to the Lotus recommended 5/30 oil.

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Last edited by iana; 03-18-2018 at 11:45 PM.
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post #26 of 26 (permalink) Old 03-19-2018, 07:09 AM
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Get an oil temp gauge and dont go on the high lift lobe until oil is at 60C (140F).

I have stuck to this rule after advice from a Toyota Race tech and have done 120k km (75k Miles) in an SC Elise and high lift lobes are still good.

And stick to the Lotus recommended 5/30 oil.
I think that 140F is still too low, and that we really want closer to 200.

I always waited 20-30 minutes after coolant was at full temp before engaging cam. (Hint from some 2ZZ specialists on this site.)

Wrapped the 2 coolers, but now they are disconnected, as per BOE for a non-track car.

While my XRS manual recommends 5w-30, Lotus specs 5w-40.

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