[MP4Dream]

More performance prototypes to come. The spherical bearings and fuel rails will fit all cars produced so far. I have to test the McLaren fuel pumps before I run ethanol through them.

 

[Saifemad]

Any new updates regarding your build ? Totally interested...

 

[MP4Dream]

Motor, suspension, turbokit, isg blockoff and fuel rails all available.

Thanks

 

[noone2]

So... anything to report performance wise or any videos?

 

[Misterpantera]

Hi
I am planning to build a M838T engine for a racecar. Any recommendations what the engine will need to be as reliable as possible with an output of approximately 550hp at 750rpm.
The engine will be mated to a Hewland NLT gearbox in a Prosport 3000 racecar.
It will probably gain some weight from the original Cosworth engine and the small hewland FT200, but I am aiming for a dry weight of 850kg.
Has there been any known problems associated with these engines?
Is it possible to source engine parts from Mclaren? I called the Swedish dealer. I asked him to look up engine bearings just to get an idea about pricing.
He says that the parts system does not come up with part numbers for the bearing shells, or any overhaul packages.
He was afraid that Mclaren based engine overhauls on factory replacement engines.
The list price for a GT3 replacement engine is 20000GBP + core charge. But they will probably not be accepting a standard MP4 engine in exchange.

Any and all inputs appreciated

Kjetil
Norway

 

[MP4Dream]

Thank you for the inquiry. We spoke earlier by phone. I can sort all of this for you. I now have the parts that I could not buy, manufactured and ready for sale.

Look forward to your project!

 

[Gary(SF)]

engine will need to be as reliable as possible with an output of approximately 550hp

So, downrated from stock? Why would there be any reliability concerns?

 

[lolachampcar]

Full throttle duty cycle?

 

[au-yt]

I for one are surprised to see McLaren use sintered rods and get a reliable 600hp. Says a fair bit about McLaren quality control.
The early Gallardo,s used them, admitably from an Audi and there were a small number of rods through blocks.

 

[Misterpantera]

Hp rating and rpm limit

So, downrated from stock? Why would there be any reliability concerns?

The GT3 cars are being restricted to 7500rpm. This would give a natural hp decrease as well, but yes I think 7500 rpm, vs 8500 rpm rpm limit will expand engine life substantially.
Regarding horsepower on tap for my build I think that around 550 hp in such a light car would be quite exiting. And knowing that you can tune it a bit more if needed.

Does anyone here know if they replaced any engine internals on the GT3 engines vs the roadcar engines?
I would also be a bit surprised if they did not change the rods, but there does not seem to be a problem with rods on roadcar engines either and know the engine is tuned to more than 700hp in later versions.

 

[au-yt]

The GT3 cars are being restricted to 7500rpm. This would give a natural hp decrease as well, but yes I think 7500 rpm, vs 8500 rpm rpm limit will expand engine life substantially.
Regarding horsepower on tap for my build I think that around 550 hp in such a light car would be quite exiting. And knowing that you can tune it a bit more if needed.

Does anyone here know if they replaced any engine internals on the GT3 engines vs the roadcar engines?
I would also be a bit surprised if they did not change the rods, but there does not seem to be a problem with rods on roadcar engines either and know the engine is tuned to more than 700hp in later versions.

Not sure about internals the. FIA regs dont mention it just the power to weight intake restricter, one can assume if it's not mentioned it OK, and with Sintered con rods I bet they are different.

http://www.fia.com/sites/default/files/257a_17-18_wmsc_09.03.2017_corrected_22.03.2017.pdf

This Drive Video done by Chris Smith mentions the reduction in HP by the restrictor to about 550.

https://m.youtube.com/watch?v=piyECZa_kX8

 

[fastfwd]

Does anyone here know if they replaced any engine internals on the GT3 engines vs the roadcar engines?
I would also be a bit surprised if they did not change the rods

The GT3 engine uses "cast" (which I guess means sintered) steel rods: 131.35mm center-to-center, 26mm rod journal diameter (22mm width), 51mm big end diameter (19.5mm width).

 

[HJG]

All M383T engines are forged steel rods. This includes GT3. Rods that are lighter and stronger were introduced at 675LT.

 

[XPRD]

Not sure where you got this information, but the 12c engines that I have disassembled have Sintered powdered metal type rods. Steel.

Don't know about gt3 or 675.

 

[fastfwd]

All M383T engines are forged steel rods. This includes GT3.

No. Note that the "Coulé / Cast" box is checked:

 

[HJG]

They are not powder metal sintered. They are forged and fracture split. The flash line is enough evidence of this. Not to mention the fact I have seen the manufacturing process!

 

[2013MP4-12C]

mp4dream you have a website? Would like to see what products you have available for mp4-12c

 

[MP4Dream]

PM sent

 

[delawaremac]

Can you pm me info?

 

[ima2nr (McMedics)]

15k views on this thread tells me MP4Dream (aka XPRD) is blazing a trail we all want to know more about.

Do you have an update with the engine finished?

I'm ready for more news!

I just did your ISG block off plate mod and it was super easy!

Thanks for posting anything new you can share.