I'm looking to swap one into a race car.I've only 25 inches to work with.Did I read correctly that this engine is only 24 inches long?must be one of the shortest v8 on the road.
Not sure we've done one, but its simple enough. Stone cold car, start it and immediately drive the car in 5th gear under 30mph for as long as possible. Thats it.
Great video and very informative! Subscribed! With the huge and detrimental impact low oil pressure can have on these cars, it would seem reasonable to have some type of low oil level warning system built in. Regardless, I check my oil level on my 570S every 500 miles. Typically end up adding about 1/4 quart.
@@executiveinvestments exactly. this is not a mclaren specific issue. regulary checking the oil level and change the oil and filter is somewhat cheap and easy for even the most stupid idiot but somewhat important.
Have you now seen any issues with conrods bending? I have seen several videos mention it even in stock engines, but more so in tuned engines? thanks Richie
@@richardwebb9186 rods are the weak point on the 4.0 but only when tuned, stock never seen an issue. We had a 675 that bent a rod but again that was tuned.
Hello John! I recently bought a 2015 650s coupe with less than 2k miles on it. The previous owner barely used it and the car is almost new. Before I bought it I drove it for a couple hours and I noticed some sort of weird hydraulic pump noise coming from the back of the car when coming to a stop. Now, I live here in Dominican Republic and we don't have a Mclaren dealership. The only choice we have is the Mercedes dealer which is the only authorized dealer by Mclaren to sell and service these cars down here in the DR. So I went down to the Mercedes dealer where they have a couple of technicians working on these cars, and I was told by the techs that the noise is quite normal on the 650s & 720s, and if I recall correctly, they mentioned that is something related to the aero system. But since you are THE EXPERT on Mclarens, I would appreciate your input on this particular situation, because to be quite honest, I don't really trust much their expertise on Mclarens because for me, they are simply Mercedes techs with some Mclaren training. I love your channel and the way you explain everything about these cars. Best regards, Levi Garcia
Great video sir! If I may... Invest 30 quid in a good microphone, it would make your videos much much better and easier to follow! By the way: I'm writing from Italy... Any of your trained technicians over here? Cheers and keep up the good work!
Appreciate your comments, I use a Insta 360 camera for these as I lack the time to really put into post production, the 360 allows me to just plonk it down, talk to the camera and upload. It's not perfect but if I add more time for things like audio I can see me never getting the time to do the videos at all I'm afraid. We are looking for international partners, Germany and Switzerland are first but looking for Italy too
Thank you for this great video! What do you consider over revving? Have McLaren set the rev limiter to high so it is worthwhile turning it back a couple of 100 revs? (When going sideways it is quite nice to have a revlimiter to lean on)
@@drivingnirvana5164 a lot of car owners get forced induction cars wrong, FI generates power and torque lower in the rev range than NA so the trick is to change gear at peak torque not peak rpm. To get the best out of any McLaren change gear between 5-6k rpm, there is little point any higher as torque is increa at a decreasing rate.
@@johnthorne2920 Thank you, well now that answer would take us into a long discussion on rpm/hp/torque/gearing but that we can save for when I bought a 650s spider that I am shooting for and come to UK to let you look over it. 😎 But top power of the stock 650s are made between 6000 and 8000, since gearing is set up for that it will accelerate the quickest in that range and with about 2k rpm down per gear you stock want all the revs you can have. But I can also see that power curves of mapped engines tend to provide power curves that are close to peak already at 5300rpm together with a boat load of torque so then it makes sense to rev less. But we are talking about vehicles with the only purpose to create emotions and fun and revs is a big part of it. When you buy an exciting engine you want to use the full engine.😎 So what do you consider to be the limit of revs that are safe and can you accommodate tune to lower the revlimiter together with adjusted power curve? I know how it is especially on faster auto cross events etc, you sometimes lean on the revlimiter for 10m instead of making the up shift and then go right back again…..
of course they are coated. a not coated aluminium liner will not work on aluminium pistons of course. and by the way, the name of the coating is nikasil, not "nicosil". its a mahle brand.
All machinery needs adequacy of design, construction, operation and maintenance. Screw up any one and it will bite you in the bum. The third and possibly the last one are down to the owner/operator. However, if there is no oil dipstick, I suggest that is a design fault.
There is one Canadian TH-camr, it doesn’t seem to have any mechanical sympathy for any car really.whos modified 720 s is belching out a white smokescreen
I can honestly say I would not own a McLaren unless it was checked prior to purchase, serviced, and warranty by Thorny.. 👍👍
I concor
Concur@@Zeebo1uk
Thank you for this. I always make sure oil is well up to temp before even considering getting into the upper revs.
Good video, I think the take home messages apply to us all never mind what we drive. Mechanical sympathy helps longevity.
As always another great video! Just wish you were in the US to watch after my McLaren.
Thank you for these videos.
Out of my budget at the moment, fascinated.
Great info John. Thanks for all you do for McLarens and owners.
Brilliant and informative as always!
Hi John
I cant find your video on how to do a cold start adaptations re set !!!
Great video as usual John. Always interesting when the bean counters get involved! Great advice as always 🙏
It is good to be aware of these issues. Thank you.
I’ve learned a lot from this video. Thanks
GreT info thanks
Good video, thanks.
Thank you for the share John. Another informative video,greatly appreciated!!!
Thank you for great information and video.
Another great video 👍
I'm looking to swap one into a race car.I've only 25 inches to work with.Did I read correctly that this engine is only 24 inches long?must be one of the shortest v8 on the road.
Thank you!
Hello. Can you please point me to the video where you talk about cold start adaptations? Thank you.
Not sure we've done one, but its simple enough. Stone cold car, start it and immediately drive the car in 5th gear under 30mph for as long as possible. Thats it.
Any specific number of times?
Great video and very informative! Subscribed! With the huge and detrimental impact low oil pressure can have on these cars, it would seem reasonable to have some type of low oil level warning system built in. Regardless, I check my oil level on my 570S every 500 miles. Typically end up adding about 1/4 quart.
lol. Low oil is bad for any engine.
@@executiveinvestments exactly. this is not a mclaren specific issue. regulary checking the oil level and change the oil and filter is somewhat cheap and easy for even the most stupid idiot but somewhat important.
@@martindelrio1891 Yep. no doubt.
Have you now seen any issues with conrods bending? I have seen several videos mention it even in stock engines, but more so in tuned engines? thanks Richie
@@richardwebb9186 rods are the weak point on the 4.0 but only when tuned, stock never seen an issue. We had a 675 that bent a rod but again that was tuned.
Hello John! I recently bought a 2015 650s coupe with less than 2k miles on it. The previous owner barely used it and the car is almost new.
Before I bought it I drove it for a couple hours and I noticed some sort of weird hydraulic pump noise coming from the back of the car when coming to a stop.
Now, I live here in Dominican Republic and we don't have a Mclaren dealership. The only choice we have is the Mercedes dealer which is the only authorized dealer by Mclaren to sell and service these cars down here in the DR. So I went down to the Mercedes dealer where they have a couple of technicians working on these cars, and I was told by the techs that the noise is quite normal on the 650s & 720s, and if I recall correctly, they mentioned that is something related to the aero system.
But since you are THE EXPERT on Mclarens, I would appreciate your input on this particular situation, because to be quite honest, I don't really trust much their expertise on Mclarens because for me, they are simply Mercedes techs with some Mclaren training.
I love your channel and the way you explain everything about these cars.
Best regards,
Levi Garcia
Can you video the noise and we can have a listen for you.
Great video sir! If I may... Invest 30 quid in a good microphone, it would make your videos much much better and easier to follow! By the way: I'm writing from Italy... Any of your trained technicians over here? Cheers and keep up the good work!
Appreciate your comments, I use a Insta 360 camera for these as I lack the time to really put into post production, the 360 allows me to just plonk it down, talk to the camera and upload. It's not perfect but if I add more time for things like audio I can see me never getting the time to do the videos at all I'm afraid.
We are looking for international partners, Germany and Switzerland are first but looking for Italy too
@@ThorneyMotorsport Hey can you tell me what’s the difference between the McLaren M383tq P1 engine and the M383t e engine used in the 570s-675lt?
Thank you for this great video!
What do you consider over revving? Have McLaren set the rev limiter to high so it is worthwhile turning it back a couple of 100 revs? (When going sideways it is quite nice to have a revlimiter to lean on)
@@drivingnirvana5164 a lot of car owners get forced induction cars wrong, FI generates power and torque lower in the rev range than NA so the trick is to change gear at peak torque not peak rpm. To get the best out of any McLaren change gear between 5-6k rpm, there is little point any higher as torque is increa at a decreasing rate.
@@johnthorne2920 Thank you, well now that answer would take us into a long discussion on rpm/hp/torque/gearing but that we can save for when I bought a 650s spider that I am shooting for and come to UK to let you look over it. 😎 But top power of the stock 650s are made between 6000 and 8000, since gearing is set up for that it will accelerate the quickest in that range and with about 2k rpm down per gear you stock want all the revs you can have. But I can also see that power curves of mapped engines tend to provide power curves that are close to peak already at 5300rpm together with a boat load of torque so then it makes sense to rev less. But we are talking about vehicles with the only purpose to create emotions and fun and revs is a big part of it. When you buy an exciting engine you want to use the full engine.😎
So what do you consider to be the limit of revs that are safe and can you accommodate tune to lower the revlimiter together with adjusted power curve?
I know how it is especially on faster auto cross events etc, you sometimes lean on the revlimiter for 10m instead of making the up shift and then go right back again…..
Thank you very much …🥂
First rule in engineering manufacturing, drawing control! Let's all sing off the same hymn sheet ;-)
It doesn't seem a good idea to me to make the liners from aluminium, were they coated, Nicosil etc?
There were different versions from different suppliers over the years some better than others
of course they are coated. a not coated aluminium liner will not work on aluminium pistons of course. and by the way, the name of the coating is nikasil, not "nicosil". its a mahle brand.
I am considering to by a 12C - would you go for a 1/2014 with 72.000km or a 2 years older 1/2012 but having only 25.000km (same price)?
Wouldnt really care, more about condition rather than mileage.
All machinery needs adequacy of design, construction, operation and maintenance. Screw up any one and it will bite you in the bum. The third and possibly the last one are down to the owner/operator. However, if there is no oil dipstick, I suggest that is a design fault.
👍
As an American, I can tell you it's our Constitutional right to overrev the engine. I can't recall which amendment, exactly, but it's in there.
I was told 75% of engine ware is when cold, You never rev the engine hard when cold
Cold start adaptations work up to 50c water temp. Not at.
Yes of course
If not mapped, those engines should be protected from over raving by electronic safe guards, isn't it?
Agreed. Cars are automatic anyway, how can they overrev?
To summarize: Dont be a show up and an id**t! And learn about cars coz money dont buy skills and knowledge! 😄😄
right. ANY engine will fail without oil(pressure).
There is one Canadian TH-camr, it doesn’t seem to have any mechanical sympathy for any car really.whos modified 720 s is belching out a white smokescreen
It’s doesn’t look good!
McLaren seem to have as many issues as JLR cars and that’s saying something