370z engine blown

Fabsnoop · 05-25-2012, 04:54 PM

Just went to the dealership to take a look at the broken HFC. The whole entire honey comb of the cat was broken off. It was just moving around freely. The tech at Nissan said "the only reason Nissan decided to replace the motor is because this motor is known for having oil consumption issues." I asked him if he was certain that the cat was the reason the engine failed..He said "it's one of the reasons.." I swear they'll never give you a for sure answer to anything. Should i go the test pipe route, have the hfc replaced (probably the worst idea since permanent viagra), or put the stock cats back on?

UNKNOWN_370 · 05-25-2012, 04:59 PM

Quote:

Originally Posted by Fabsnoop

Just went to the dealership to take a look at the broken HFC. The whole entire honey comb of the cat was broken off. It was just moving around freely. The tech at Nissan said "the only reason Nissan decided to replace the motor is because this motor is known for having oil consumption issues." I asked him if he was certain that the cat was the reason the engine failed..He said "it's one of the reasons.." I swear they'll never give you a for sure answer to anything. Should i go the test pipe route, have the hfc replaced (probably the worst idea since permanent viagra), or put the stock cats back on?

Leave the cats stock. Just use a non-res exhaust. It will be the same difference in sound and hp. Either No resonators on the exhaust on a stock cat or test pipe on a resonated exhaust will still give similar gains. Unless you are changing everything from the intake, headers pipes and exhaust. The switcharoo won't make a big difference. The only true difference is forced induction.

Jordo! · 05-26-2012, 12:35 PM

Quote:

Originally Posted by UNKNOWN_370

Leave the cats stock. Just use a non-res exhaust. It will be the same difference in sound and hp. Either No resonators on the exhaust on a stock cat or test pipe on a resonated exhaust will still give similar gains. Unless you are changing everything from the intake, headers pipes and exhaust. The switcharoo won't make a big difference. The only true difference is forced induction.

That's a really interesting idea -- I didn't think the resonators on an exhaust as restrictive at the core of a cat. If true, that's a good way to stay OEM and green, but pick up lost power. Would be neat to see a dyno comparison of the two set ups.

MattP725 · 05-26-2012, 04:58 PM

Quote:

Originally Posted by Jordo!

That's a really interesting idea -- I didn't think the resonators on an exhaust as restrictive at the core of a cat. If true, that's a good way to stay OEM and green, but pick up lost power. Would be neat to see a dyno comparison of the two set ups.

Resonators create no exhaust gas restrictions, cats do... HFCs paired with resonated or non-resonated exhausts will produce the same gains. Regular cats vs HFCs do change the restriction however. This has been tested by lots of different exhaust manufacturers.

ImportConvert · 05-30-2012, 08:59 PM

Quote:

Originally Posted by Fabsnoop

Just went to the dealership to take a look at the broken HFC. The whole entire honey comb of the cat was broken off. It was just moving around freely. The tech at Nissan said "the only reason Nissan decided to replace the motor is because this motor is known for having oil consumption issues." I asked him if he was certain that the cat was the reason the engine failed..He said "it's one of the reasons.." I swear they'll never give you a for sure answer to anything. Should i go the test pipe route, have the hfc replaced (probably the worst idea since permanent viagra), or put the stock cats back on?

You're lucky he DIDN'T give you a "for sure answer". Shuffle back to the lobby and zip the lip, you just got a free engine even though the crap parts from Berk are what destroyed it. Go play the lotto.

onzedge · 05-30-2012, 10:58 PM

Quote:

Originally Posted by ImportConvert

You're lucky he DIDN'T give you a "for sure answer". Shuffle back to the lobby and zip the lip, you just got a free engine even though the crap parts from Berk are what destroyed it. Go play the lotto.

Rusty · 05-30-2012, 11:41 PM

Until someone tears the engine down. You will never know what really happened the this engine! Talk all you want about it. It's all guessing for now.

05-30-2012, 11:41 PM	#7 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,584 Drives: 2011 Nismo GM 6M Rep Power: 2684440	Until someone tears the engine down. You will never know what really happened the this engine! Talk all you want about it. It's all guessing for now. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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05-25-2012, 04:54 PM	#1 (permalink)
Fabsnoop Base Member Join Date: Aug 2010 Location: Los Angeles Posts: 34 Drives: Nissan 370z Rep Power: 17	Just went to the dealership to take a look at the broken HFC. The whole entire honey comb of the cat was broken off. It was just moving around freely. The tech at Nissan said "the only reason Nissan decided to replace the motor is because this motor is known for having oil consumption issues." I asked him if he was certain that the cat was the reason the engine failed..He said "it's one of the reasons.." I swear they'll never give you a for sure answer to anything. Should i go the test pipe route, have the hfc replaced (probably the worst idea since permanent viagra), or put the stock cats back on?