What is it about Mac that they feel perfectly comfortable taking a reasonably large chunk of change from their customers for the cars then, even after warranty is long gone, refusing to support the car with-
Gearbox parts to fix silly leaks
Service interval reset tools so you can change the oil
Core motor parts so you can play with projects

It is a special kind of hubris that allows a company to sell you such an expensive bit of kit then tell you to take a hike unless you pay one of their authorized dealers. Some of those dealers are super good and helpful while others are outright useless; either way, you must use them. So much for the best of the best of the best, with honors promise at the start of the MP4 effort.

 

at this point you can be double rich by opening a repair show with all your new tools and manufacturing

 

I can accommodate such requests.
PM me If interested.

 

I prefer to keep this thread technical.[/QUOTE]

Pleasure talking to you. Will definitely be following along as this progresses!>

 

Taking a bit of time to get tolerances correct. Should be done pretty soon. All components are finally manufactured.

 

@XPRD @MP4Dream Could crate purchase details and options be provided? Interested for a 570S project

 

What happened after Selma debut?

 

I plan to install it after I do a half mile run on the turbo kit. Then, it is 4.35 stroker time. Keep in mind the 4.0 stroker is less expensive and is better than McLaren's 720 solution.

 

Did you run the engine at the dyno? Any results?

I know the guys at Syvecs spend a lot of time to integrate their ECUs with the CAN bus on Audi (Lambo) and Nissan GTR cars.

How did you solve the communication between the Motec and the PCCU that controls the gearbox? Are you able to access the PCCU itself to change shift times, torque, transitions between clutches when changing gears?

 

I plan to use a dynapack for tuning. I do have a solution for ecu (MoTec) and PCCU integration. Thus far, only McLaren can adjust parameters in the PCCU. It is well protected from my understanding. Can bus integration is a must.

 

Anyone know where I can find a pdf for the engine torque specs?

 

Any further updates on this all.....? Very interesting indeed

 

Hello. I am from Brasil, some one can pass the timing chain of this engine M838T . I did not found. Thanks

 

Resurrecting a 4 yr old tread.....

Anyone actually running a “built” engine yet?

I am aware of XPRD’s (original) product development as well as Renaissance Speed‘s engine package offerings, however is anyone actually running a “built” engine.

Are any of these “upgraded” parts available without being required to purchase a complete engine package?

 

Resurrecting a 4 yr old tread.....

Anyone actually running a “built” engine yet?

I am aware of XPRD’s (original) product development as well as Renaissance Speed‘s engine package offerings, however is anyone actually running a “built” engine.

Are any of these “upgraded” parts available without being required to purchase a complete engine package?

Wow, it is hard to believe it has been 5 years since I first posted on this thread (post #6). So much has happened in that time, including us becoming a sponsor. However, since this is not our thread, we want to be respectful to the original poster, while being responsive to your query since you mentioned us by name...

To answer your question on whether anyone is running a Renaissance Speed built McLaren engine yet, it is “yes”. I am sure you have seen our volcano red 12C shop car break numerous records over the last 3 years on this forum. It was built back in 2018 with the goal of 1,000 rwhp and reached its power target about 2 years ago. We were the first McLaren to crack over 1,000 hp to the wheels:

The same engine has done numerous pulls, all without skipping a beat. Several years after being built, it is still winning awards at race events. As seen by this Shift Sector event a few months ago on Syvecs, where we beat out many higher HP cars (we were middle of the pack) and ended up in the semi-finals with a 2500 HP Viper:

Given the success of our first generation of built engines, we decided to open this up for others to buy a few months ago and improve on it as Gen 2 with twice the horsepower. To this point, we just released our ABSOLUTE - McLaren Stroker 4.2L Billet Crankshaft and ABSOLUTE - McLaren Titanium Connecting Rods, which can be found in our ABSOLUTE – McLaren Built Engine (Blueprinted Shortblock) V2. We have three concurrent high-power engine builds in process, so more data will be headed inbound soon on the forums...

Moreover, it is always advisable to buy and have your parts installed by the same supplier/shop. Why? To avoid finger-pointing in the event of a failure. Unfortunately, this happens the majority of the time, where the parts supplier blames the installer and the installer blames the parts. The end state is a confused customer and two companies with tarnished reputations. The only way to avoid this is to have one single supplier/shop responsible for both. This is better for the parts supplier/installer and the end customer. Hence, why we only offer fully assembled, blueprinted, short blocks and built cylinder heads.

To provide a better understanding of the work involved in our blueprinting process, this the spec sheet that we fill out for every engine build which is similar to how Ricardo originally built and approved your OE short block:

It is exciting to see how far the scene has come in the years since this thread was started. A 1,000 rwhp was a dream back then, but now is easily reached with the right parts. We are proud to be part of this continually evolving community and those who also want to push the envelope and win at the highest level of street car competition.

 

This is another Sponsor/Vendors thread. Is it really courteous to post here. I think not.

I will have a major update on motor parts in the coming days to weeks. As I originally pioneered the motor build, I would like all interested parties to please stay tuned for my take on how I believe the M838t and M840t should receive built for power, reliability, weight reduction in the mold of a true Formula 1 engine. I will post weights, design, and materials. I may not post the manufacturers but will disclose all to those who purchase.

XPRD

 

This is another Sponsor/Vendors thread. Is it really courteous to post here. I think not.

We have an obligation to the community, and the right as a vendor, to respond to queries directed at us. We will continue to engage with the community since we are generating palpable excitement with our ABSOLUTE engine development program that is actually in-use, showing results and setting world records along the way.

 

A private message to @Lfsglass would have been more appropriate. I will not respond to any thread that you start on this forum out of proper courtesy.

XPRD

 

A private message to @Lfsglass would have been more appropriate. I will not respond to any thread that you start on this forum out of proper courtesy.

XPRD

We disagree. This is a public forum, a thread that has not been updated in 4 years despite multiple open inquiries (aka abandoned) and directly asks about our products. We suggest you focus less on etiquette and more on showing results. We are leading the way with our ABSOLUTE packages, but eager to line up at a race.

 

I can understand where you are coming from, and since I don't know the history I will have to do some research.

Thanks for the heads up.

 

Don't believe everything you read. Ask around here and you will quickly obtain the truth.

You will never see me imposing and trolling in any vendors forum posts that they started. Won't happen.
If all here want to follow my innovation, projects, and read about what I do most days of the week on McLarens and maybe the occasional k24 NSX, then hit up Instagram. It's always a good time. I have major projects coming in the near future that will further validate the McLaren cars as kings of the RWD world.

@xprd.tech

XPRD

 

Dunno what the above poster is talking about. The motor build program was completed years ago. There was no market, so I tabled it. Recently I have been commissioned to build 2 motors, both 4.0 liters from 3.8 stock motors. LikenI said above, stay tuned. I attacked no vendors on here. Rather, just one is a serious problem with decency. Post links if you notice that I attacked anyone. I am curious.

My reputation here is clear to the many 1000s who buy from me regularly. Low volume markets are tough when you bank roll your own development as opposed to buying and copying other people's stuff and reselling other people's tech. I sell and do business with nearly every vendor on this forum and around the world. This is a fact. I do not need to justify my products or customer satisfaction to anyone. I make products to help the community and do engineering projects. You have been brainwashed by someone whom we all know. It is a fact that if I do not specialize in a product for a customer, that I recommend another vendor or the dealer to obtain what they are looking for, even sometimes the one vendor whom I dislike.




XPRD

 

Since this is my thread. I want to let all interested forum members know that my solution for motor building utilizes increased bore and stock stroke to achieve an oversquare/Formula 1 engine design. My liners, rods, bearings, pistons are all made in Europe. They require several months to manufacturer with upfront payment. Well, in 2 weeks, I will have a nice batch of parts for 3 motors. I didn't intend to make scores of motors but I have enough main bearings sets for 18 more motors. Thus is my approach to motor design. Others will do their interpretation. I feel that my choice of an oversquare design is the best or I wouldn't even do it. I also threw a few curve balls in there with longer rods and shorter pistons. XPRD liners are made from an alloy steel and nikasil coated to lower ring friction. Difference between ring friction of ductile iron and my liners is min 60%. This goes up with bore and ring width and ring tension.

Ductile iron liners (used elsewhere) are lower quality liners, cannot be coated due to high levels of impurities included in the base material. It's a cast iron material.

So...
3.8l -> 4.0 liter with the lightest rotating forged steel rod assembly

4.0l ->4.2 liter same forum leading lightest rotating parts.

I can take either motor to 4.35 liters with titanium rods based on an increased stroke and increased bore in combination.

All rods are custom, lightweight, and 1500+ hp rated by design and architecture.

As soon as it clears customs and shipping, I will post pics here and on Instagram. I just need to make another custom headgasket for the M840t.

XPRD

 

Since this is my thread. I want to let all interested forum members know that my solution for motor building utilizes increased bore and stock stroke to achieve an oversquare/Formula 1 engine design. My liners, rods, bearings, pistons are all made in Europe. They require several months to manufacturer with upfront payment. Well, in 2 weeks, I will have a nice batch of parts for 3 motors. I didn't intend to make scores of motors but I have enough main bearings sets for 18 more motors. Thus is my approach to motor design. Others will do their interpretation. I feel that my choice of an oversquare design is the best or I wouldn't even do it. I also threw a few curve balls in there with longer rods and shorter pistons. XPRD liners are made from an alloy steel and nikasil coated to lower ring friction. Difference between ring friction of ductile iron and my liners is min 60%. This goes up with bore and ring width and ring tension.

Ductile iron liners (used elsewhere) are lower quality liners, cannot be coated due to high levels of impurities included in the base material. It's a cast iron material.

So...
3.8l -> 4.0 liter with the lightest rotating forged steel rod assembly

4.0l ->4.2 liter same forum leading lightest rotating parts.

I can take either motor to 4.35 liters with titanium rods based on an increased stroke and increased bore in combination.

All rods are custom, lightweight, and 1500+ hp rated by design and architecture.

As soon as it clears customs and shipping, I will post pics here and on Instagram. I just need to make another custom headgasket for the M840t.

XPRD

Maybe you have a head gasket maker or not, but redline engineering in Cape Town South Africa has a worldwide patent on their head gaskets. They supply all the top fuel dragsters in the USA as well. Redline Engineering cylinder head gasket manufacturer and the main man there is Angus, tell him Brad sent you. Careful though, he is a genius MOFO and is so pedantic is SCARY!! Like if its not done his way to 110% perfection (like only skimming the head and not the block), he will not supply and rather forego making the money for brand reputation instead. But he is pure genius! Did his engineering thesis on F1 turbo engines. +27721433773 on whatsapp too.

 

the ren speed and xprd no love lost saga continues

we all know it is a niche clientele so dog eat dog market

 

the ren speed and xprd no love lost saga continues

we all know it is a niche clientele so dog eat dog market

I had no idea this was a thing...

 

Thank you. I actually contacted them last night, so I definitely look for to well designed and thought through parts.