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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Just another n54 engine build thread



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      12-08-2012, 03:29 PM   #1
boosted5
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Post Just another n54 engine build thread

To make my long story short, younger brother ended up blowing my motor by throwing the trans into 2nd instead of 4th. As a result the timing chain had snapped and a few pistons seem to have kissed a few valves. Still in the process of tearing everything down but it isn't looking too good for the n54 here, new head will be needed I am told by my shop as well as a few new pistons. I could sit here cry, whine and most importantly make my brother wash the car every week for the next 2 years of his life but instead I choose to take a breath, and take advantage of this opportunity. As soon as the tear down is done and we have a full picture of everything, I will be ordering CP forged 9;5;1 pistons from vac and possibly getting the head machined to flow better by a local shop( Suggestions Needed ). I have pm'd tony for stg3 turbos, RB about his (which he has in-stock). Tony says 1 month for the stg3 but the RB are already proving to provide a ton of power for the money. It all depends if VT can finish up the stg3 turbos in a month or two I would be willing to give them a go if not then RBs it is. I also want to say that I did contact vishnu and waiting to hear back from them as well. Car is going from procede and dci to fully built with upgraded turbos, suggestions are welcome. Stay tooned.
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      12-08-2012, 03:48 PM   #2
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3" cless downpipes, a Nice FMIC, charge pipe and DV's, and you my friend will have a great time with this project!
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      12-08-2012, 03:58 PM   #3
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That sucks, but at least youre turning a bad thing into possibly the best thing youll ever do
Good luck with everything!
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      12-08-2012, 04:44 PM   #4
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Any reason such low compression?
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      12-08-2012, 04:45 PM   #5
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Quote:
Originally Posted by saxon View Post
Any reason such low compression?
More boost threshold
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      12-08-2012, 05:10 PM   #6
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Why not built engine + single turbo? Are you auto or manual trans?
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      12-08-2012, 05:38 PM   #7
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Quote:
Originally Posted by Fully_Bolted View Post
Why not built engine + single turbo? Are you auto or manual trans?
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Last edited by besfort; 12-08-2012 at 05:42 PM. Reason: wngaccnt
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      12-08-2012, 05:42 PM   #8
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Quote:
Originally Posted by Fully_Bolted View Post
Why not built engine + single turbo? Are you auto or manual trans?
I had emailed Vishnu about the project, didn't call me, I went ahead and called Robert today but was told he would give me a call back... didn't get one, must have been busy on Friday. I still have a little bit of time to decide on which turbo upgrade, if Vargas puts out their stg3 turbos in a reasonable amount of time like they say they will then it will be the obvious choice, this brings another equation to the table .. fitment only RB turbos are confirmed to fit on the 535i while the others aren't. I have a manual
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      12-08-2012, 07:34 PM   #9
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Since you have a manual I would be all over a big single turbo and built engine.
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      12-08-2012, 10:06 PM   #10
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I say wait a month or two to decide on your turbo setup! Vargas kit looks promising!
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      12-09-2012, 12:02 AM   #11
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What is the appeal to keeping a twin turbo setup, as opposed to a single?
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      12-09-2012, 12:05 AM   #12
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Quote:
Originally Posted by trbolexis
What is the appeal to keeping a twin turbo setup, as opposed to a single?
Customer support, lol.
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      12-09-2012, 12:09 AM   #13
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You could also just buy a used long block and call it a day.

I wouldn't lower the CR.
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      12-09-2012, 12:18 AM   #14
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Get a Clutch upgrade. first.. trust me.
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      12-09-2012, 12:21 AM   #15
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Quote:
Originally Posted by Fully_Bolted View Post
Customer support, lol.
I guess that makes sense; the twin turbos can answer twice as many phone calls as the single turbo, when you dial its number(s). Whats the area code again?

#butserioulsy

I was asking because i genuinely would like to know.
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      12-09-2012, 12:36 AM   #16
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Quote:
Originally Posted by Fully_Bolted
Quote:
Originally Posted by trbolexis
What is the appeal to keeping a twin turbo setup, as opposed to a single?
Customer support, lol.
Lol that is real funny!!
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      12-09-2012, 12:46 AM   #17
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I would say that a daily driver car with upgraded twins would be more fun around town because of less turbo lag with potential still for the big horsepower of a single. Regardless, u can have all the power u want but if u can't put it to the ground it's useless.
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      12-09-2012, 01:03 AM   #18
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Quote:
Originally Posted by trbolexis View Post
I guess that makes sense; the twin turbos can answer twice as many phone calls as the single turbo, when you dial its number(s). Whats the area code again?

#butserioulsy

I was asking because i genuinely would like to know.
The joke was in reference to the poor customer support afforded by Vishnu. They hardly ever (almost never) return emails requesting support, and although they usually answer the phone, they tend to immediately blame hardware before trying to troubleshoot anything to do with the tune. Many of the issue from inexperienced users are hardware related (misfires from bad plugs or coils), however when they assume everyone calling doesn't know anything about their car it gets frustrating. I along with many other Procede users we have found its easier to rely on the forum or learn how to tune things our self, than get quality service from Vishnu. I think its unreasonable for everyone to expect service like Terry offers (because frankly it is above and beyond any company I have ever heard of/dealt with), but replying to an email should be able to be accomplished within 2 business days rather than never /////rant

Now on to the benefits/differences of twin turbos over a single....twins, depending on how they are sized, will typically spool up quicker reducing lag. The downside is if they aren't big enough they don't continue to make more HP all the way to redline (stock and current hybrid turbos). A large single takes a little longer to spool, however will continue to make more HP to redline. The Stage 3 Vargas is building *I think* will spool up quicker than the single and still be able to push enough air to make power all the way to redline, so it may be a win/win. It probably won't have the peak power potential of the single though. Given enough RPMs, the single should make more peak power. The N54 currently isn't revving out 8-9000 RPMs though so it may not matter for now. On another note though, the Vishnu/FFTEC single isn't running anywhere near its max potential right now. You are basically choosing between low end torque/less lag (twins) or top end power (single). Hope that helps.

Last edited by jdbretz; 12-09-2012 at 01:12 AM.
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      12-09-2012, 01:06 AM   #19
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Jdbretz, great post. But trbolexis works for FFTEC. He's asking loaded questions.
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      12-09-2012, 03:50 AM   #20
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No i was not asking a loaded question.

Thanks for actually answering my question jdbretz!

I wanted input on what makes the twins desirable to the 335i community, as opposed to a compound turbo, or single turbo setup. More over, I was looking to find out what the original poster was setting their goal on, for drive-ability and performance.

My affiliation with FFTEC has nothing to do with what I was asking about.
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      12-09-2012, 09:17 AM   #21
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Quote:
Originally Posted by trbolexis
No i was not asking a loaded question.

Thanks for actually answering my question jdbretz!

I wanted input on what makes the twins desirable to the 335i community, as opposed to a compound turbo, or single turbo setup. More over, I was looking to find out what the original poster was setting their goal on, for drive-ability and performance.

My affiliation with FFTEC has nothing to do with what I was asking about.
My bad, I figured you were asking so you could unleash your wealth of knowledge about what makes a single turbo set-up superior. Cheers man.
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      12-09-2012, 11:05 AM   #22
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this looks fun!

Can i have a Ride?
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