[chris-c]

Just a little update the car has been remapped by HLC Performance to see quite what we can get out of the port meth setup and I'm sure there is a little bit left in it but I've now done three runs in the 5's for 100-200 making this by far the fastest F31 ouside of Taiwan.

I appreciate that the jump from the Stg3 E30 time to what I'm at now isn't actually that much BUT the E30 time was admittedly a VALID glory run. The weather gods were on my side as it was ~5c and brilliant DA. Last night in Mexico it was 12.5-13c, rather humid and rubbish DA so the difference is really more than it appears. Also the constant mixing of Ethanol with every fill up was a pain in the backside so now I just go out, put my foot down and as long as there is meth in the tank it gets up and goes.

8.68s - Stg2+ (didnt do much testing on this but this was the fastest)
7.84s - Stg2+ E30 (Average 7.9s - 8.0s fairly consistent)
6.91s - Stg3 99 (Average 7.0 - 7.1s)
6.10s - Stg3+ E30 (Average 6.25s - 6.3s)
5.76s - St3 + Port Meth (Average 6.0/6.1)

[moppity]

I love following this story @chris-c I couldn’t work out from the first post what discs you changed to for better braking. What did you settle on?

[chris-c]

I swapped to some Zimmerman ones from auto doc. Slotted and dimpled. They're not expensive but the pads make all the difference. Doing all of these trips to Mexico is destroying the ferodo pads though

[Lorcan]

Mexico?

[Scott340]

Originally Posted by Lorcan

Mexico?

Aka doing WOT runs on the street rather than a track or drag strip

[Watsey]

Originally Posted by chris-c

I swapped to some Zimmerman ones from auto doc. Slotted and dimpled. They're not expensive but the pads make all the difference. Doing all of these trips to Mexico is destroying the ferodo pads though

A pad upgrade may be in order.

I run Pagid RSL1 all round, full-time, street and track. They handle heavy braking very well but do squeak at low speeds i.e. sub 10mph.

Pagid RS29 is also a popular compound. The pad compound is very similar to RSL1 but some of the characteristics have been tweaked.

[Lorcan]

Originally Posted by Scott340

Aka doing WOT runs on the street rather than a track or drag strip

Thank you for the education

[Lorcan]

A few comparisons for your 100-200km/h time.

M2 Comp: 10.7
AC Schnitzer M2 Comp: 8.8

M4 (G82): 8.6
AC Schnitzer M4 (G82): 6.9

M5 (F90): 7.5
AC Schnitzer M5 (F90) 6.4

[chris-c]

Originally Posted by Watsey

A pad upgrade may be in order.

I run Pagid RSL1 all round, full-time, street and track. They handle heavy braking very well but do squeak at low speeds i.e. sub 10mph.

Pagid RS29 is also a popular compound. The pad compound is very similar to RSL1 but some of the characteristics have been tweaked.

Ive found the ds2500s perfect for my fast road use but I'll keep an eye on what comes next.

Annoyingly I filled the car to the brim the other day or I'd have been out tonight doing some more data logs.

I need to poke my meth controller more to make sure everything is a-okay. Might add in a flow sensor and a boost cut so if it isn't flowing the car simply looses boost.

[chris-c]

Originally Posted by Lorcan

A few comparisons for your 100-200km/h time.

M2 Comp: 10.7
AC Schnitzer M2 Comp: 8.8

M4 (G82): 8.6
AC Schnitzer M4 (G82): 6.9

M5 (F90): 7.5
AC Schnitzer M5 (F90) 6.4

So yeah, running the map I'm running now I'd upset a stock F90 and absolutely piss off a tuned one. Sure, from a dig I'd be destroyed but don't often do that.

Can't wait to get it to pod next year and I'll beat the snot out of it until it hits tens

[Mick.86uk]

Wrench recorded 5.65 100-200kph on a F90 M5.

Stage 1 with decat downpipes but doesn't mention the fuel used.

[Lorcan]

According to the datalog our dragbike does 100-200km/h in 1.27, but admittedly you can't drive it to the shops or go on holiday on it

[Watsey]

Originally Posted by Lorcan

According to the datalog our dragbike does 100-200km/h in 1.27, but admittedly you can't drive it to the shops or go on holiday on it

[chris-c]

I've had a few issues with my OBD adapter to get the RPM over the last few days where the controller simply wasn't seeing an RPM signal therefore it wasn't spraying meth. Fortunately I've caught it without going too silly.

Today I ripped the OBD port out and hardwired the RPM feed to it so I don't have to worry about a loose connection anymore. The bonus is my OBD port flap closes now and the car looks even more stealthy!

Originally Posted by Mick.86uk

Wrench recorded 5.65 100-200kph on a F90 M5.
Stage 1 with decat downpipes but doesn't mention the fuel used.

Thats a modified F90 M5 worth a bucket load more than mine. Guess they're not on basic fuel either knowing them

Originally Posted by Lorcan

According to the datalog our dragbike does 100-200km/h in 1.27, but admittedly you can't drive it to the shops or go on holiday on it

My "trips to mexico" had the kids car seats in the back, a small collection of tools just incase something went wrong and a pile of other crap in the car that really isn't needed for a low weight run. That 1.27 is absolutely mental.

I honestly think the only reason your bike stays on the ground is because you're balls are just too heavy so it can't take off!

[chris-c]

I caught a plane last night to mexico (as you do) and the car was running very nicely. Full tank of meth (12L) and just over 3/4 tank of fuel, car seats in the back. 13C ambient, 23 IAT and the car ran a respectable time.

The tuner is going to turn it up one more time to allow me to fight for the fastest F31 on Dragy (0.09s difference). I didn't expect to get this much from it on my "daily" map

[winther1]

Originally Posted by chris-c

I caught a plane last night to mexico (as you do) and the car was running very nicely. Full tank of meth (12L) and just over 3/4 tank of fuel, car seats in the back. 13C ambient, 23 IAT and the car ran a respectable time.

The tuner is going to turn it up one more time to allow me to fight for the fastest F31 on Dragy (0.09s difference). I didn't expect to get this much from it on my "daily" map

very impressive!!!! And I'm now worrying about rod knock with my BM3 stage 2 tune after watching this

Have you changed the bearing and taken other precautions to strengthen the engine?

[chris-c]

Nope absolutely stock block. I'm sure it'll shit the bed at some point and I'll have to replace/upgrade it but for now I'm keeping it 100% stock block / stock gearbox.

[martin10chk]

Originally Posted by winther1

very impressive!!!! And I'm now worrying about rod knock with my BM3 stage 2 tune after watching this

Have you changed the bearing and taken other precautions to strengthen the engine?

Interesting (and disturbing!) viewing. But trying to untangle it. The guy buys a car with an engine of unknown servicing history. Rags it, including something like 20 drag pulls. Changes the oil (noting it is filthy black), bolts a new turbo on and runs if for 30 mins or so and it is toast. The first noise he hears really does seem to be something to do with the new turbo (which it is noted has 'seized'). The subsequent catastrophic noise is definitely mashed engine internals. So this seems like either the turbo failed and the engine ingested something, or that a very poorly serviced engine just chose this moment to spit the dummy. I would put my money on the former - or maybe that during fitting something was left where it entered the turbo/induction system. I really don't think this has anything to do with tuning / remap. B58s are regularly big bhp it seems - entirely stock - without issues.

In the good old bad old days of carburettors it was a known fail to let something drop into the choke during servicing (sometime a ball bearing that was a part of the carb). You would then get maybe 10 minutes of gentle 'pinging' until the poor piston that had received the unwelcome part gave up the ghost ... along with the engine.

[winther1]

Originally Posted by chris-c

Nope absolutely stock block. I'm sure it'll shit the bed at some point and I'll have to replace/upgrade it but for now I'm keeping it 100% stock block / stock gearbox.

Wow - what is the mileage and is it your daily drive?
Hoping it will stay healthy and let us know when you break the record! Don't forget the gopro

[Watsey]

The 'new' turbo was seized/stuck - this was a massive warning sign. But they freed it by counter-rotating one of the wheels, heard a ping', and chose to bolt it on to the engine for a tuning session.

Had they bench primed the turbo ? Had they cranked the engine, two separate 10 second cranks using the starter motor but with the electrical connectors disconnected from the injectors so that the engine couldn't 'fire', so as to produce a pressurised oil supply to the turbo ? If not, damage to the turbo bearings is very likely, which can produce swarf.

A turbo should always spin freely. Depending on the construction of the core the 'ping' could have been a ball bearing coming out of a race, some swarf being ejected, etc. It could have been a jammed vane, and that in itself should have been a significant warning that the turbo was suspect.

Damage to the turbo bearings can cause the turbo to fall out of balance, fast rotating metal components no longer run on a complete bearing and touch whilst spinning at 100k-200k rpm, more swarf is produced, metal particles flow out of the turbo through the oil drain and into the sump where they can be picked up by the rotating components or the oil pump.

The oil filter is meant to intercept things like this and stop them getting into the oil pathways and galleries, but fine particles can still find their way into bearings etc.

Sometimes 'we' take a risk. Big shame for the guy that he's apparently blown his engine, but it seems that there's a chain of factors here including low mechanical sympathy and/or servicing, and lack of attention to detail.

[winther1]

Originally Posted by Watsey

The 'new' turbo was seized/stuck - this was a massive warning sign. But they freed it by counter-rotating one of the wheels, heard a ping', and chose to bolt it on to the engine for a tuning session.

Had they bench primed the turbo ? Had they cranked the engine, two separate 10 second cranks using the starter motor but with the electrical connectors disconnected from the injectors so that the engine couldn't 'fire', so as to produce a pressurised oil supply to the turbo ? If not, damage to the turbo bearings is very likely, which can produce swarf.

A turbo should always spin freely. Depending on the construction of the core the 'ping' could have been a ball bearing coming out of a race, some swarf being ejected, etc. It could have been a jammed vane, and that in itself should have been a significant warning that the turbo was suspect.

Damage to the turbo bearings can cause the turbo to fall out of balance, fast rotating metal components no longer run on a complete bearing and touch whilst spinning at 100k-200k rpm, more swarf is produced, metal particles flow out of the turbo through the oil drain and into the sump where they can be picked up by the rotating components or the oil pump.

The oil filter is meant to intercept things like this and stop them getting into the oil pathways and galleries, but fine particles can still find their way into bearings etc.

Sometimes 'we' take a risk. Big shame for the guy that he's apparently blown his engine, but it seems that there's a chain of factors here including low mechanical sympathy and/or servicing, and lack of attention to detail.

If this is how it went, it makes the garage look really bad - they are part of his channel for promotional reasons, but I think participating in this was counterproductive for them.
He already sourced a new 1K miles engine in his update vid, so glad to see he is moving on.
As mentioned, he had no idea how the engine was treated by previous owner, and while enthusiastic about his builds, he doesn't have the in-depth technical knowledge - and never claimed to. But when you are the garage, certainly you would expect them to take all the right steps to try and prevent such a massive failure.

[chris-c]

Originally Posted by winther1

Wow - what is the mileage and is it your daily drive?
Hoping it will stay healthy and let us know when you break the record! Don't forget the gopro

It hit 50'000 miles last week. It's probably had an oil change every 2000 miles for the last year or so since going high power.

When I swap maps to the silly map I'll make sure I video it but it's all a bit bloody boring going in a straight line.

I should be going to terminal velocity next year and the first proper Santa Pod event as I need to get the car into the tens. It will happen but I might end up taking a lot of stuff out of the car to get there. Who needs seats and a tow bar anyway!