Drivetrain (Cooper S) MINI Cooper S (R56) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Need Recommendations for Built Engines

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Old 04-15-2019, 01:28 AM
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Need Recommendations for Built Engines

So Alice threw a rod out of the bottom of her block again. Short block was replaced at 62k, now at 113k I have another engine inspection port. Needless to say I'm done with stock engines. Still need to assess damage to see if the head is salvageable (which I suspect it is) but I'm looking for something that will be a bit stronger. Not looking to make more power than I have with crazy built internals or big valve heads, just want a setup that will hold what I already have done.
 
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Old 04-15-2019, 06:11 PM
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Did you replace the connecting rod bolts when you added the larger turbo? How many pounds of boost were you running? Any idea what caused the previous rod failure?

Thanks.
 
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Old 04-16-2019, 06:53 PM
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Originally Posted by scotty_r56s View Post
Did you replace the connecting rod bolts when you added the larger turbo? How many pounds of boost were you running? Any idea what caused the previous rod failure?

Thanks.
he's running a bigger turbo on a tune that deadens the knock sensor, it's going to break. We see it all the time
Rods/pistons are a minimum. Water meth with that stage 3 will make it last longer. (just noticed you had meth, maybe start running a higher concentration)
 
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Old Yesterday, 05:04 AM
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Originally Posted by Revolution Motor Works View Post
he's running a bigger turbo on a tune that deadens the knock sensor, it's going to break. We see it all the time
Rods/pistons are a minimum. Water meth with that stage 3 will make it last longer. (just noticed you had meth, maybe start running a higher concentration)
I'm running 100% meth with a .8mm injector on the Howerton kit. I wasn't in boost when the engine failed, I was cruising on the highway at 80mph. Engine was making a little bit of noise all weekend but I thought it was the timing chain beginning to rattle. Head is off now, not bent valves so that's fine. I just need a short block.
 
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Old Yesterday, 07:22 AM
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Originally Posted by thebombardier View Post
I'm running 100% meth with a .8mm injector on the Howerton kit. I wasn't in boost when the engine failed, I was cruising on the highway at 80mph. Engine was making a little bit of noise all weekend but I thought it was the timing chain beginning to rattle. Head is off now, not bent valves so that's fine. I just need a short block.
the engine was damaged from before, it just finally let go
if you were running that much meth and it failed, the tune is way off
 
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Old Yesterday, 03:06 PM
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Okay, maybe I came off wrong. I'm not trying to be an ******* here. Personally, I think a detailed assessment of what happened to your car and the conditions that led to catastrophic failure would be beneficial to the community. Having said that, on the previous failure you were not using the plugs Manic recommends. Is there a reason for this and do you think it has any relation to your failure? What spark plugs were you using and what fuel (91, 93, E85 mix)? How many foot-lbs of boost were you hitting normally? When you replaced the motor, did you do a complete replacement or just cannibalize the parts that you needed? Where is your WMI nozzle located and why did you choose to use 100% rather than a mix?

Again, I think this would help everyone. Thank you.
 
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Old Yesterday, 03:43 PM
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Originally Posted by scotty_r56s View Post
Okay, maybe I came off wrong. I'm not trying to be an ******* here. Personally, I think a detailed assessment of what happened to your car and the conditions that led to catastrophic failure would be beneficial to the community. Having said that, on the previous failure you were not using the plugs Manic recommends. Is there a reason for this and do you think it has any relation to your failure? What spark plugs were you using and what fuel (91, 93, E85 mix)? How many foot-lbs of boost were you hitting normally? When you replaced the motor, did you do a complete replacement or just cannibalize the parts that you needed? Where is your WMI nozzle located and why did you choose to use 100% rather than a mix?

Again, I think this would help everyone. Thank you.
At the moment I am running NGK 1422s at the recommended gap. Running 93 octane gas on the 93 octane map for Manic. The peak boost is 22.5 psi on that map. The last replacement, only the bottom end was swapped for a 2013 stock Cooper S short block with 50k miles on it, at the time of failure this time it was at ~102k miles. My WMI nozzle is located in the post intercooler charge pipe as per Howerton's instruction manual for the car. I run a 100% mix because I'm lazy. But I never had any issue in the year and a half I was running methanol or the almost 3 years since my last engine replacement. Changed my oil religiously every 5000 miles. I was pretty much abusing my car all weekend at Tail of the Dragon in the days before the failure and I was getting a slight ticking from the timing chain. But again, at the time of failure I was cruising at 80 in 6th gear on the highway. I don't believe I was low on oil because I checked it the previous day.

EDIT: Also worth noting I actually sent my oil out for a Blackstone test and that oil change was done about 1k miles before the failure, so I'll be able to see if the failure was over a long period of time or instantaneous.
 

Last edited by thebombardier; Yesterday at 03:59 PM.
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