Some quick questions from me...

1. Do the Supertech pistons incorporate the same DI crown design as the OEM ones?
2. What's the flow of the new turbo?
3. Does it matches the flow of the stock head/cams/valves?
4. Have you considered anything about the exhaust manifold?
5. Have you found the initial cause of your engine's failure?
6. If you didn't, how do you know your new engine parts are going to cope especially with the added power?

 

Ahh I hear ya! I personally wouldn't judge you as we've all done mods that can/will technically aid in the shortened lifespan of our cars/parts.

 

1. Yes they do. I will post pics of them as soon as they get here.
2. I do not know the exact flow specs of the turbo. It is more than stock.
3. The new flow should be acceptable for the stock heads.
4. Yes. I was looking into the larger one sold by a vendor.
5. My engine did not fail. It still runs. I was just experiencing excessive blow by. It is due to worn down piston rings.
6. All of my new parts will be able to cope because they are forged aluminum. It is much more resilient to high power. The pistons and rods can hold more power than the motor will ever be able to create.

I apologize for my grammatical errors. I am on my phone.

 

1. Good, cause the bowl design on the crown of the piston is vital for DI. Looking forward for the pics.
2. More than which stock? The S or the JCW? Does it have both wheels changed (compressor and turbine)?
3. If the hybrid turbo is flowing more than the JCW turbo, then in order to achieve the best results, you should start thinking of increasing the flow of the head, the camshafts and the valves to match. If you don't then your power curve will drop off before the turbo starts to loose breath, and you won't have taken advantage of its advanced efficiency.
4. There is no larger manifold...there is the S manifold and the JCW manifold. Different design, different cast material, similar but not same flow
5. Worn piston rings from a high mileage engine is normal. 52k is not that high...and the N14 engine is an already strong engine with Mahle forged pistons. It's detonation which kills it, and every engine regardless how forged it is.
6. As above, detonation is your enemy, even if you fit the best available engine parts, it will destroy them with ease. It is also amazing the amount of abuse the OEM engine internals can withstand. Aftermarket parts are tougher if they are used wisely...

 

2. More than the JCW. It has the same exhaust with a larger compressor wheel.
3. I believe mentioned before I intend to get a thumper performance head and cams.
4. There are ported and polished headers.
5/6. You are correct. However detonation was not my issue. If the piston to wall clearance is not set right you can experience premature ring ware. (I will be posting pictures of my pistons as well) We all know that the attention to detail was not there far many minis that are having ring failures. (excessive oil consumption is the same thing)


Also I'm not 100% certain but I'm pretty sure the Cooper S pistons are cast. I will know for sure tomorrow.

 

Alright folks got an important update for you concerning carbon buildup and why my motor failed.

It turns out I have carbon buildup. However mine was not balanced at all. It would have clean spots and then really dirty spots. Kinda weird. But on average it wasn't nearly as bad as some I have seen on here. I assume most of it is from before I did the PVC delete around 35,000 miles. Then the clean spots are a mystery to me.

As I suspected my premature ring wear was caused by bad piston to wall clearance. The piston that was below acceptable levels (25%) was not secure in the cylinder. I Gould wiggle it much more that the rest. Other than that pistons and rings are still in one piece.

I couldn't get pics today for you all but I'll get some tomorrow.

 

MNIPWR, is the exhaust manifold you are speaking of Way's or is there another out there somewhere? That is next up for me.

 

Yeas it is. Thumper performance can also port and polish the manifolds.

 

Also I just remembered. I spoke to G-pop they said its possible for to flow up to 32 lbs.

 

Has anyone looked into extrusion honing for the exhaust manifold? My forced induction background is limited but based on my few discussions with tuners this would be a good thing.

 

What Way is selling is infact the OEM stock JCW exhaust manifold...

 

Good to know. Maybe I'll get that and have it ported and or polished.

 

Yes it's worthwhile doing it. Been there done that...

Also 32lbs is nice, roughly 320bhp that means. Do you happen to know what compressor wheel is used (inducer-exducer) to achieve that flow characteristics?

 

One thing I've always wondered about the after market mechanical LSDs is if you have to do anything ECU-wise if the car has the eLSD. How does the traction control systems meld with a a mechanical LSD.

The carbon build up report makes me glad I put the water-meth system on at 1500 miles. You might consider doing that as well.

 

I do not know the exact specs of the turbo wheels. But I will once i get the turbo back.

As for the mechanical LSD it should be fine since I opted out of the eLSD. My car doesn't have it a all. I have meth as well. I think that's why it's spotted. The clean parts are where the meth is contacting the valves. I'm going to move the jet back so it disperse better by the time it hits the valves. I also didn't put my kit on till about 35k so you should be fine.

 

Wooooo! Got some parts in the mail today.

The first item I have for you in the OS Giken LSD



I dont have much to say about this. I purchased it off of OS's reputation. It seems like a solid product. I also got new bearings to match.

Next I have the Carrillo H-Beam rods.



The first thing I noticed about the rods was the on the crank end. They are put together and torqued to spec, then they are bored and honed. It makes for an extremely smooth finish. Before they ship they spray the entire thing with WD-40, now it might just be me but i love that smell.

I also have a couple other random ones for your enjoyment. One of the engine bay and one of the boot.



The amount of parts is astonishing. Ill get some pics of the block and pistons soon.

 

Jealous!

 

More stuff!

Pistons arrived in the mail today. Supertech 10.5CR 77.5 Bore




Photo of my block before I dropped it off.



And of course the obligatory carbon buildup post. First the dirtiest one and then the cleanest one. A thing I did notice was that the one that was most dirty is directly above the PVC inlet on the manifold. Don't mind the fly not sure how he got there.



Now the good/bad news. I dropped everything off as the machine shop and since its the holiday season...... its going to take at least 3 weeks. So I wont have much for you till I get my turbo back from G-Pop.

 

Is this the right place for this? Maybe it should be moved to JCW or General for more traffic.

 

I think this is the right home for this. This is pure drivetrain.

Supertech got the piston dome profile correct! What kind of coating is that?

 

Only a matter of time before I'll be needing a rebuild myself.

 

Supertech was recommended by Jan at RMW, I believe that is what he has in his engine. I also went with them because they are 4032 alloy apposed to 1680 alloy. The pistons have a phosphate coating. It is to prevent micro welding of the rings, help even heat distribution, and since its a porous material It is supposed to absorb a finite amount of oil to aid lubrication.

As for rebuilding your engine.... As a college student it was a hard decision. I am still debating if I am going to post the total bill for everything at the end of this. But Ill put it this way. The only reason I was about to do this is I was saving for a Ducati. That fund is now gone.

 

As a college student, I could not imagine how terrifying your bill is going to be once you're done. As a young person, I can't wait to see the finished product.

 

Haha, welcome to my life.

 

Did Jan share any more trade secrets? He hasn't done any big power builds on the R56 platform yet has he? I always thought there was still not enough demand except from the UK gents.