720s New Engine
Discussion
Hi All
I bought a 720s 18 months old with 1300 miles on the clock as.my first supercar
In july i had an engine fault appear on the car and Mclaren came and picked it up the next day. The diagnosis was a hairline crack in the cam cover that would be fixed within a couple of days. I phoned 3 days later and was told the full engine needed to be replaced as when they were replacing the the cover they found the cam shift on cam 2 had also failed so they needed to replace the full engine. Luckily its still under warranty but am that this has happened with an engine under 2 years old and would expect as its a brand new engine being installed they would extend the warranty as they are saying it will still expire on the 3rd year. Has anyone been in any similar situations or offer any guidance on the engine replacement as i have not seen anywhere on any sites where they have replaced the full engine.
I bought a 720s 18 months old with 1300 miles on the clock as.my first supercar
In july i had an engine fault appear on the car and Mclaren came and picked it up the next day. The diagnosis was a hairline crack in the cam cover that would be fixed within a couple of days. I phoned 3 days later and was told the full engine needed to be replaced as when they were replacing the the cover they found the cam shift on cam 2 had also failed so they needed to replace the full engine. Luckily its still under warranty but am that this has happened with an engine under 2 years old and would expect as its a brand new engine being installed they would extend the warranty as they are saying it will still expire on the 3rd year. Has anyone been in any similar situations or offer any guidance on the engine replacement as i have not seen anywhere on any sites where they have replaced the full engine.
Conker123 said:
Hi All
I bought a 720s 18 months old with 1300 miles on the clock as.my first supercar
In july i had an engine fault appear on the car and Mclaren came and picked it up the next day. The diagnosis was a hairline crack in the cam cover that would be fixed within a couple of days. I phoned 3 days later and was told the full engine needed to be replaced as when they were replacing the the cover they found the cam shift on cam 2 had also failed so they needed to replace the full engine. Luckily its still under warranty but am that this has happened with an engine under 2 years old and would expect as its a brand new engine being installed they would extend the warranty as they are saying it will still expire on the 3rd year. Has anyone been in any similar situations or offer any guidance on the engine replacement as i have not seen anywhere on any sites where they have replaced the full engine.
Not sure how a hairline crack in the plastic cam cover would show up as an engine fault in the ECU! I'm sure it was the VCT(I'm assuming thats what you mean by cam shift?) that flagged the fault but I'm surprised they are replacing the whole engine just because 1 VCT has failed? Can't help with the warranty issue but would suspect that would be the initial stance by most car makers?I bought a 720s 18 months old with 1300 miles on the clock as.my first supercar
In july i had an engine fault appear on the car and Mclaren came and picked it up the next day. The diagnosis was a hairline crack in the cam cover that would be fixed within a couple of days. I phoned 3 days later and was told the full engine needed to be replaced as when they were replacing the the cover they found the cam shift on cam 2 had also failed so they needed to replace the full engine. Luckily its still under warranty but am that this has happened with an engine under 2 years old and would expect as its a brand new engine being installed they would extend the warranty as they are saying it will still expire on the 3rd year. Has anyone been in any similar situations or offer any guidance on the engine replacement as i have not seen anywhere on any sites where they have replaced the full engine.
Thanks See below from Mclaren, I know nothing about Motors but seemed odd that they would replace the lot
The initial diagnosis confirmed a crack in bank 2 cam cover and the parts were ordered as per Simon’s update to you.
When it came to installing the new cam cover and the associated work unfortunately it was discovered that the cam shaft on bank 2 had also failed.
Following McLaren’s technical guidelines this is not inspected when a cam cover is faulty and is only becomes visible upon the cover replacement.
The only way forward is to replace the complete engine
The initial diagnosis confirmed a crack in bank 2 cam cover and the parts were ordered as per Simon’s update to you.
When it came to installing the new cam cover and the associated work unfortunately it was discovered that the cam shaft on bank 2 had also failed.
Following McLaren’s technical guidelines this is not inspected when a cam cover is faulty and is only becomes visible upon the cover replacement.
The only way forward is to replace the complete engine
Conker123 said:
Thanks See below from Mclaren, I know nothing about Motors but seemed odd that they would replace the lot
The initial diagnosis confirmed a crack in bank 2 cam cover and the parts were ordered as per Simon’s update to you.
When it came to installing the new cam cover and the associated work unfortunately it was discovered that the cam shaft on bank 2 had also failed.
Following McLaren’s technical guidelines this is not inspected when a cam cover is faulty and is only becomes visible upon the cover replacement.
The only way forward is to replace the complete engine
Ah right the camshaft itself has failed then not the VCT/Phaser. I think there is a limit as to how far the dealers are allowed to strip the engines for repairs before they just replace the engine as a whole. Maybe someone else can shed light on the warranty issue on the "new" engine. Assuming the engine wasn't catastophic it will go back and either get reworked or scrapped.The initial diagnosis confirmed a crack in bank 2 cam cover and the parts were ordered as per Simon’s update to you.
When it came to installing the new cam cover and the associated work unfortunately it was discovered that the cam shaft on bank 2 had also failed.
Following McLaren’s technical guidelines this is not inspected when a cam cover is faulty and is only becomes visible upon the cover replacement.
The only way forward is to replace the complete engine
drcarrera said:
In my (non-McLaren) experience a new component typically comes with a 12 month warranty or is covered until the new car warranty expires, whichever is the later.
That isn't what I've seen. Some manufacturers offer two year warranties on parts that have been paid for. If it's been replaced under the warranty it's only covered up until the warranty ends and not the standard 24 month warranty for that part. drcarrera said:
In my (non-McLaren) experience a new component typically comes with a 12 month warranty or is covered until the new car warranty expires, whichever is the later.
If the new part has 1 year on it but the car only has 3m left then it will be 3m, this is typically what happens.You will need to write to the mclaren rep. Get the details from the mclaren contact you're currently dealing with.
I did this after my disastrous 720 experience. They had it longer than i did. They gave me a massive discount on an extended warranty to run after the original one expires.
You'd have to be brave or crazy to run one without a warranty.
I did this after my disastrous 720 experience. They had it longer than i did. They gave me a massive discount on an extended warranty to run after the original one expires.
You'd have to be brave or crazy to run one without a warranty.
HTP99 said:
drcarrera said:
In my (non-McLaren) experience a new component typically comes with a 12 month warranty or is covered until the new car warranty expires, whichever is the later.
If the new part has 1 year on it but the car only has 3m left then it will be 3m, this is typically what happens.Mind you, if, for example, you had an engine replacement 35 months into a 36 month warranty and then two months later it broke I'd be surprised if there wasn't some recourse.
Rocketreid said:
The engines are pretty much bullet proof and it is extremely rare for this type of issue but in any event Mclaren are very particular when an engine part fails. By replacing the engine when most manufacturers would have just repaired it us a positive and a bonus for you.
Your £300k bespoke supercar no longer has matching numbers in this scenario? Or does the engine get same engine nos?VonSenger said:
You will need to write to the mclaren rep. Get the details from the mclaren contact you're currently dealing with.
I did this after my disastrous 720 experience. They had it longer than i did. They gave me a massive discount on an extended warranty to run after the original one expires.
You'd have to be brave or crazy to run one without a warranty.
Thanks very much. I will do just that I did this after my disastrous 720 experience. They had it longer than i did. They gave me a massive discount on an extended warranty to run after the original one expires.
You'd have to be brave or crazy to run one without a warranty.
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